Mercurial > hg > truffle
annotate src/share/vm/classfile/verifier.cpp @ 10265:92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
Summary: With NPG, const KlassOop klass which is in fact a definition converted to Klass* const, which is not the original intention. The right usage is converting them to const Klass*.
Reviewed-by: coleenp, kvn
Contributed-by: yumin.qi@oracle.com
| author | minqi |
|---|---|
| date | Fri, 10 May 2013 08:27:30 -0700 |
| parents | 09b0d3e9ba6c |
| children | 76482cbba706 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 8060 | 2 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/classFileStream.hpp" | |
| 27 #include "classfile/javaClasses.hpp" | |
| 28 #include "classfile/stackMapTable.hpp" | |
| 6605 | 29 #include "classfile/stackMapFrame.hpp" |
| 30 #include "classfile/stackMapTableFormat.hpp" | |
| 1972 | 31 #include "classfile/systemDictionary.hpp" |
| 32 #include "classfile/verifier.hpp" | |
| 33 #include "classfile/vmSymbols.hpp" | |
| 6605 | 34 #include "interpreter/bytecodes.hpp" |
| 1972 | 35 #include "interpreter/bytecodeStream.hpp" |
| 36 #include "memory/oopFactory.hpp" | |
| 37 #include "memory/resourceArea.hpp" | |
| 38 #include "oops/instanceKlass.hpp" | |
| 39 #include "oops/oop.inline.hpp" | |
| 40 #include "oops/typeArrayOop.hpp" | |
| 41 #include "prims/jvm.h" | |
| 42 #include "runtime/fieldDescriptor.hpp" | |
| 43 #include "runtime/handles.inline.hpp" | |
| 44 #include "runtime/interfaceSupport.hpp" | |
| 45 #include "runtime/javaCalls.hpp" | |
| 46 #include "runtime/orderAccess.hpp" | |
| 47 #include "runtime/os.hpp" | |
| 48 #ifdef TARGET_ARCH_x86 | |
| 49 # include "bytes_x86.hpp" | |
| 50 #endif | |
| 51 #ifdef TARGET_ARCH_sparc | |
| 52 # include "bytes_sparc.hpp" | |
| 53 #endif | |
| 54 #ifdef TARGET_ARCH_zero | |
| 55 # include "bytes_zero.hpp" | |
| 56 #endif | |
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57 #ifdef TARGET_ARCH_arm |
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58 # include "bytes_arm.hpp" |
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59 #endif |
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60 #ifdef TARGET_ARCH_ppc |
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61 # include "bytes_ppc.hpp" |
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62 #endif |
| 0 | 63 |
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64 #define NOFAILOVER_MAJOR_VERSION 51 |
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65 #define NONZERO_PADDING_BYTES_IN_SWITCH_MAJOR_VERSION 51 |
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66 #define STATIC_METHOD_IN_INTERFACE_MAJOR_VERSION 52 |
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67 |
| 0 | 68 // Access to external entry for VerifyClassCodes - old byte code verifier |
| 69 | |
| 70 extern "C" { | |
| 71 typedef jboolean (*verify_byte_codes_fn_t)(JNIEnv *, jclass, char *, jint); | |
| 72 typedef jboolean (*verify_byte_codes_fn_new_t)(JNIEnv *, jclass, char *, jint, jint); | |
| 73 } | |
| 74 | |
| 75 static void* volatile _verify_byte_codes_fn = NULL; | |
| 76 | |
| 77 static volatile jint _is_new_verify_byte_codes_fn = (jint) true; | |
| 78 | |
| 79 static void* verify_byte_codes_fn() { | |
| 80 if (_verify_byte_codes_fn == NULL) { | |
| 81 void *lib_handle = os::native_java_library(); | |
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82 void *func = os::dll_lookup(lib_handle, "VerifyClassCodesForMajorVersion"); |
| 0 | 83 OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
| 84 if (func == NULL) { | |
| 85 OrderAccess::release_store(&_is_new_verify_byte_codes_fn, false); | |
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86 func = os::dll_lookup(lib_handle, "VerifyClassCodes"); |
| 0 | 87 OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
| 88 } | |
| 89 } | |
| 90 return (void*)_verify_byte_codes_fn; | |
| 91 } | |
| 92 | |
| 93 | |
| 94 // Methods in Verifier | |
| 95 | |
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96 bool Verifier::should_verify_for(oop class_loader, bool should_verify_class) { |
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97 return (class_loader == NULL || !should_verify_class) ? |
| 0 | 98 BytecodeVerificationLocal : BytecodeVerificationRemote; |
| 99 } | |
| 100 | |
| 101 bool Verifier::relax_verify_for(oop loader) { | |
| 102 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 103 bool need_verify = | |
| 104 // verifyAll | |
| 105 (BytecodeVerificationLocal && BytecodeVerificationRemote) || | |
| 106 // verifyRemote | |
| 107 (!BytecodeVerificationLocal && BytecodeVerificationRemote && !trusted); | |
| 108 return !need_verify; | |
| 109 } | |
| 110 | |
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111 bool Verifier::verify(instanceKlassHandle klass, Verifier::Mode mode, bool should_verify_class, TRAPS) { |
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112 HandleMark hm; |
| 0 | 113 ResourceMark rm(THREAD); |
| 114 | |
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115 Symbol* exception_name = NULL; |
| 0 | 116 const size_t message_buffer_len = klass->name()->utf8_length() + 1024; |
| 117 char* message_buffer = NEW_RESOURCE_ARRAY(char, message_buffer_len); | |
| 6605 | 118 char* exception_message = message_buffer; |
| 0 | 119 |
| 120 const char* klassName = klass->external_name(); | |
| 6605 | 121 bool can_failover = FailOverToOldVerifier && |
| 122 klass->major_version() < NOFAILOVER_MAJOR_VERSION; | |
| 0 | 123 |
| 124 // If the class should be verified, first see if we can use the split | |
| 125 // verifier. If not, or if verification fails and FailOverToOldVerifier | |
| 126 // is set, then call the inference verifier. | |
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127 if (is_eligible_for_verification(klass, should_verify_class)) { |
| 0 | 128 if (TraceClassInitialization) { |
| 129 tty->print_cr("Start class verification for: %s", klassName); | |
| 130 } | |
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131 if (klass->major_version() >= STACKMAP_ATTRIBUTE_MAJOR_VERSION) { |
| 6605 | 132 ClassVerifier split_verifier(klass, THREAD); |
| 133 split_verifier.verify_class(THREAD); | |
| 134 exception_name = split_verifier.result(); | |
| 135 if (can_failover && !HAS_PENDING_EXCEPTION && | |
| 0 | 136 (exception_name == vmSymbols::java_lang_VerifyError() || |
| 137 exception_name == vmSymbols::java_lang_ClassFormatError())) { | |
| 6605 | 138 if (TraceClassInitialization || VerboseVerification) { |
| 0 | 139 tty->print_cr( |
| 140 "Fail over class verification to old verifier for: %s", klassName); | |
| 141 } | |
| 142 exception_name = inference_verify( | |
| 143 klass, message_buffer, message_buffer_len, THREAD); | |
| 144 } | |
| 6605 | 145 if (exception_name != NULL) { |
| 146 exception_message = split_verifier.exception_message(); | |
| 147 } | |
| 0 | 148 } else { |
| 149 exception_name = inference_verify( | |
| 150 klass, message_buffer, message_buffer_len, THREAD); | |
| 151 } | |
| 152 | |
| 6605 | 153 if (TraceClassInitialization || VerboseVerification) { |
| 0 | 154 if (HAS_PENDING_EXCEPTION) { |
| 155 tty->print("Verification for %s has", klassName); | |
| 156 tty->print_cr(" exception pending %s ", | |
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157 InstanceKlass::cast(PENDING_EXCEPTION->klass())->external_name()); |
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158 } else if (exception_name != NULL) { |
| 0 | 159 tty->print_cr("Verification for %s failed", klassName); |
| 160 } | |
| 161 tty->print_cr("End class verification for: %s", klassName); | |
| 162 } | |
| 163 } | |
| 164 | |
| 165 if (HAS_PENDING_EXCEPTION) { | |
| 166 return false; // use the existing exception | |
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167 } else if (exception_name == NULL) { |
| 0 | 168 return true; // verifcation succeeded |
| 169 } else { // VerifyError or ClassFormatError to be created and thrown | |
| 170 ResourceMark rm(THREAD); | |
| 171 instanceKlassHandle kls = | |
| 172 SystemDictionary::resolve_or_fail(exception_name, true, CHECK_false); | |
| 173 while (!kls.is_null()) { | |
| 174 if (kls == klass) { | |
| 175 // If the class being verified is the exception we're creating | |
| 176 // or one of it's superclasses, we're in trouble and are going | |
| 177 // to infinitely recurse when we try to initialize the exception. | |
| 178 // So bail out here by throwing the preallocated VM error. | |
| 179 THROW_OOP_(Universe::virtual_machine_error_instance(), false); | |
| 180 } | |
| 181 kls = kls->super(); | |
| 182 } | |
| 183 message_buffer[message_buffer_len - 1] = '\0'; // just to be sure | |
| 6605 | 184 THROW_MSG_(exception_name, exception_message, false); |
| 0 | 185 } |
| 186 } | |
| 187 | |
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188 bool Verifier::is_eligible_for_verification(instanceKlassHandle klass, bool should_verify_class) { |
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189 Symbol* name = klass->name(); |
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190 Klass* refl_magic_klass = SystemDictionary::reflect_MagicAccessorImpl_klass(); |
| 0 | 191 |
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192 return (should_verify_for(klass->class_loader(), should_verify_class) && |
| 0 | 193 // return if the class is a bootstrapping class |
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194 // or defineClass specified not to verify by default (flags override passed arg) |
| 0 | 195 // We need to skip the following four for bootstraping |
| 196 name != vmSymbols::java_lang_Object() && | |
| 197 name != vmSymbols::java_lang_Class() && | |
| 198 name != vmSymbols::java_lang_String() && | |
| 199 name != vmSymbols::java_lang_Throwable() && | |
| 200 | |
| 201 // Can not verify the bytecodes for shared classes because they have | |
| 202 // already been rewritten to contain constant pool cache indices, | |
| 203 // which the verifier can't understand. | |
| 204 // Shared classes shouldn't have stackmaps either. | |
| 205 !klass()->is_shared() && | |
| 206 | |
| 207 // As of the fix for 4486457 we disable verification for all of the | |
| 208 // dynamically-generated bytecodes associated with the 1.4 | |
| 209 // reflection implementation, not just those associated with | |
| 210 // sun/reflect/SerializationConstructorAccessor. | |
| 211 // NOTE: this is called too early in the bootstrapping process to be | |
| 212 // guarded by Universe::is_gte_jdk14x_version()/UseNewReflection. | |
| 213 (refl_magic_klass == NULL || | |
| 214 !klass->is_subtype_of(refl_magic_klass) || | |
| 215 VerifyReflectionBytecodes) | |
| 216 ); | |
| 217 } | |
| 218 | |
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219 Symbol* Verifier::inference_verify( |
| 0 | 220 instanceKlassHandle klass, char* message, size_t message_len, TRAPS) { |
| 221 JavaThread* thread = (JavaThread*)THREAD; | |
| 222 JNIEnv *env = thread->jni_environment(); | |
| 223 | |
| 224 void* verify_func = verify_byte_codes_fn(); | |
| 225 | |
| 226 if (verify_func == NULL) { | |
| 227 jio_snprintf(message, message_len, "Could not link verifier"); | |
| 228 return vmSymbols::java_lang_VerifyError(); | |
| 229 } | |
| 230 | |
| 231 ResourceMark rm(THREAD); | |
| 6605 | 232 if (VerboseVerification) { |
| 0 | 233 tty->print_cr("Verifying class %s with old format", klass->external_name()); |
| 234 } | |
| 235 | |
| 236 jclass cls = (jclass) JNIHandles::make_local(env, klass->java_mirror()); | |
| 237 jint result; | |
| 238 | |
| 239 { | |
| 240 HandleMark hm(thread); | |
| 241 ThreadToNativeFromVM ttn(thread); | |
| 242 // ThreadToNativeFromVM takes care of changing thread_state, so safepoint | |
| 243 // code knows that we have left the VM | |
| 244 | |
| 245 if (_is_new_verify_byte_codes_fn) { | |
| 246 verify_byte_codes_fn_new_t func = | |
| 247 CAST_TO_FN_PTR(verify_byte_codes_fn_new_t, verify_func); | |
| 248 result = (*func)(env, cls, message, (int)message_len, | |
| 249 klass->major_version()); | |
| 250 } else { | |
| 251 verify_byte_codes_fn_t func = | |
| 252 CAST_TO_FN_PTR(verify_byte_codes_fn_t, verify_func); | |
| 253 result = (*func)(env, cls, message, (int)message_len); | |
| 254 } | |
| 255 } | |
| 256 | |
| 257 JNIHandles::destroy_local(cls); | |
| 258 | |
| 259 // These numbers are chosen so that VerifyClassCodes interface doesn't need | |
| 260 // to be changed (still return jboolean (unsigned char)), and result is | |
| 261 // 1 when verification is passed. | |
| 262 if (result == 0) { | |
| 263 return vmSymbols::java_lang_VerifyError(); | |
| 264 } else if (result == 1) { | |
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265 return NULL; // verified. |
| 0 | 266 } else if (result == 2) { |
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267 THROW_MSG_(vmSymbols::java_lang_OutOfMemoryError(), message, NULL); |
| 0 | 268 } else if (result == 3) { |
| 269 return vmSymbols::java_lang_ClassFormatError(); | |
| 270 } else { | |
| 271 ShouldNotReachHere(); | |
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272 return NULL; |
| 0 | 273 } |
| 274 } | |
| 275 | |
| 6605 | 276 TypeOrigin TypeOrigin::null() { |
| 277 return TypeOrigin(); | |
| 278 } | |
| 279 TypeOrigin TypeOrigin::local(u2 index, StackMapFrame* frame) { | |
| 280 assert(frame != NULL, "Must have a frame"); | |
| 281 return TypeOrigin(CF_LOCALS, index, StackMapFrame::copy(frame), | |
| 282 frame->local_at(index)); | |
| 283 } | |
| 284 TypeOrigin TypeOrigin::stack(u2 index, StackMapFrame* frame) { | |
| 285 assert(frame != NULL, "Must have a frame"); | |
| 286 return TypeOrigin(CF_STACK, index, StackMapFrame::copy(frame), | |
| 287 frame->stack_at(index)); | |
| 288 } | |
| 289 TypeOrigin TypeOrigin::sm_local(u2 index, StackMapFrame* frame) { | |
| 290 assert(frame != NULL, "Must have a frame"); | |
| 291 return TypeOrigin(SM_LOCALS, index, StackMapFrame::copy(frame), | |
| 292 frame->local_at(index)); | |
| 293 } | |
| 294 TypeOrigin TypeOrigin::sm_stack(u2 index, StackMapFrame* frame) { | |
| 295 assert(frame != NULL, "Must have a frame"); | |
| 296 return TypeOrigin(SM_STACK, index, StackMapFrame::copy(frame), | |
| 297 frame->stack_at(index)); | |
| 298 } | |
| 299 TypeOrigin TypeOrigin::bad_index(u2 index) { | |
| 300 return TypeOrigin(BAD_INDEX, index, NULL, VerificationType::bogus_type()); | |
| 301 } | |
| 302 TypeOrigin TypeOrigin::cp(u2 index, VerificationType vt) { | |
| 303 return TypeOrigin(CONST_POOL, index, NULL, vt); | |
| 304 } | |
| 305 TypeOrigin TypeOrigin::signature(VerificationType vt) { | |
| 306 return TypeOrigin(SIG, 0, NULL, vt); | |
| 307 } | |
| 308 TypeOrigin TypeOrigin::implicit(VerificationType t) { | |
| 309 return TypeOrigin(IMPLICIT, 0, NULL, t); | |
| 310 } | |
| 311 TypeOrigin TypeOrigin::frame(StackMapFrame* frame) { | |
| 312 return TypeOrigin(FRAME_ONLY, 0, StackMapFrame::copy(frame), | |
| 313 VerificationType::bogus_type()); | |
| 314 } | |
| 315 | |
| 316 void TypeOrigin::reset_frame() { | |
| 317 if (_frame != NULL) { | |
| 318 _frame->restore(); | |
| 319 } | |
| 320 } | |
| 321 | |
| 322 void TypeOrigin::details(outputStream* ss) const { | |
| 323 _type.print_on(ss); | |
| 324 switch (_origin) { | |
| 325 case CF_LOCALS: | |
| 326 ss->print(" (current frame, locals[%d])", _index); | |
| 327 break; | |
| 328 case CF_STACK: | |
| 329 ss->print(" (current frame, stack[%d])", _index); | |
| 330 break; | |
| 331 case SM_LOCALS: | |
| 332 ss->print(" (stack map, locals[%d])", _index); | |
| 333 break; | |
| 334 case SM_STACK: | |
| 335 ss->print(" (stack map, stack[%d])", _index); | |
| 336 break; | |
| 337 case CONST_POOL: | |
| 338 ss->print(" (constant pool %d)", _index); | |
| 339 break; | |
| 340 case SIG: | |
| 341 ss->print(" (from method signature)"); | |
| 342 break; | |
| 343 case IMPLICIT: | |
| 344 case FRAME_ONLY: | |
| 345 case NONE: | |
| 346 default: | |
| 347 ; | |
| 348 } | |
| 349 } | |
| 350 | |
| 351 #ifdef ASSERT | |
| 352 void TypeOrigin::print_on(outputStream* str) const { | |
| 353 str->print("{%d,%d,%p:", _origin, _index, _frame); | |
| 354 if (_frame != NULL) { | |
| 355 _frame->print_on(str); | |
| 356 } else { | |
| 357 str->print("null"); | |
| 358 } | |
| 359 str->print(","); | |
| 360 _type.print_on(str); | |
| 361 str->print("}"); | |
| 362 } | |
| 363 #endif | |
| 364 | |
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365 void ErrorContext::details(outputStream* ss, const Method* method) const { |
| 6605 | 366 if (is_valid()) { |
| 367 ss->print_cr(""); | |
| 368 ss->print_cr("Exception Details:"); | |
| 369 location_details(ss, method); | |
| 370 reason_details(ss); | |
| 371 frame_details(ss); | |
| 372 bytecode_details(ss, method); | |
| 373 handler_details(ss, method); | |
| 374 stackmap_details(ss, method); | |
| 375 } | |
| 376 } | |
| 377 | |
| 378 void ErrorContext::reason_details(outputStream* ss) const { | |
| 379 streamIndentor si(ss); | |
| 380 ss->indent().print_cr("Reason:"); | |
| 381 streamIndentor si2(ss); | |
| 382 ss->indent().print(""); | |
| 383 switch (_fault) { | |
| 384 case INVALID_BYTECODE: | |
| 385 ss->print("Error exists in the bytecode"); | |
| 386 break; | |
| 387 case WRONG_TYPE: | |
| 388 if (_expected.is_valid()) { | |
| 389 ss->print("Type "); | |
| 390 _type.details(ss); | |
| 391 ss->print(" is not assignable to "); | |
| 392 _expected.details(ss); | |
| 393 } else { | |
| 394 ss->print("Invalid type: "); | |
| 395 _type.details(ss); | |
| 396 } | |
| 397 break; | |
| 398 case FLAGS_MISMATCH: | |
| 399 if (_expected.is_valid()) { | |
| 400 ss->print("Current frame's flags are not assignable " | |
| 401 "to stack map frame's."); | |
| 402 } else { | |
| 403 ss->print("Current frame's flags are invalid in this context."); | |
| 404 } | |
| 405 break; | |
| 406 case BAD_CP_INDEX: | |
| 407 ss->print("Constant pool index %d is invalid", _type.index()); | |
| 408 break; | |
| 409 case BAD_LOCAL_INDEX: | |
| 410 ss->print("Local index %d is invalid", _type.index()); | |
| 411 break; | |
| 412 case LOCALS_SIZE_MISMATCH: | |
| 413 ss->print("Current frame's local size doesn't match stackmap."); | |
| 414 break; | |
| 415 case STACK_SIZE_MISMATCH: | |
| 416 ss->print("Current frame's stack size doesn't match stackmap."); | |
| 417 break; | |
| 418 case STACK_OVERFLOW: | |
| 419 ss->print("Exceeded max stack size."); | |
| 420 break; | |
| 421 case STACK_UNDERFLOW: | |
| 422 ss->print("Attempt to pop empty stack."); | |
| 423 break; | |
| 424 case MISSING_STACKMAP: | |
| 425 ss->print("Expected stackmap frame at this location."); | |
| 426 break; | |
| 427 case BAD_STACKMAP: | |
| 428 ss->print("Invalid stackmap specification."); | |
| 429 break; | |
| 430 case UNKNOWN: | |
| 431 default: | |
| 432 ShouldNotReachHere(); | |
| 433 ss->print_cr("Unknown"); | |
| 434 } | |
| 435 ss->print_cr(""); | |
| 436 } | |
| 437 | |
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438 void ErrorContext::location_details(outputStream* ss, const Method* method) const { |
| 6605 | 439 if (_bci != -1 && method != NULL) { |
| 440 streamIndentor si(ss); | |
| 441 const char* bytecode_name = "<invalid>"; | |
| 442 if (method->validate_bci_from_bcx(_bci) != -1) { | |
| 443 Bytecodes::Code code = Bytecodes::code_or_bp_at(method->bcp_from(_bci)); | |
| 444 if (Bytecodes::is_defined(code)) { | |
| 445 bytecode_name = Bytecodes::name(code); | |
| 446 } else { | |
| 447 bytecode_name = "<illegal>"; | |
| 448 } | |
| 449 } | |
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450 InstanceKlass* ik = method->method_holder(); |
| 6605 | 451 ss->indent().print_cr("Location:"); |
| 452 streamIndentor si2(ss); | |
| 453 ss->indent().print_cr("%s.%s%s @%d: %s", | |
| 454 ik->name()->as_C_string(), method->name()->as_C_string(), | |
| 455 method->signature()->as_C_string(), _bci, bytecode_name); | |
| 456 } | |
| 457 } | |
| 458 | |
| 459 void ErrorContext::frame_details(outputStream* ss) const { | |
| 460 streamIndentor si(ss); | |
| 461 if (_type.is_valid() && _type.frame() != NULL) { | |
| 462 ss->indent().print_cr("Current Frame:"); | |
| 463 streamIndentor si2(ss); | |
| 464 _type.frame()->print_on(ss); | |
| 465 } | |
| 466 if (_expected.is_valid() && _expected.frame() != NULL) { | |
| 467 ss->indent().print_cr("Stackmap Frame:"); | |
| 468 streamIndentor si2(ss); | |
| 469 _expected.frame()->print_on(ss); | |
| 470 } | |
| 471 } | |
| 472 | |
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473 void ErrorContext::bytecode_details(outputStream* ss, const Method* method) const { |
| 6605 | 474 if (method != NULL) { |
| 475 streamIndentor si(ss); | |
| 476 ss->indent().print_cr("Bytecode:"); | |
| 477 streamIndentor si2(ss); | |
| 478 ss->print_data(method->code_base(), method->code_size(), false); | |
| 479 } | |
| 480 } | |
| 481 | |
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482 void ErrorContext::handler_details(outputStream* ss, const Method* method) const { |
| 6605 | 483 if (method != NULL) { |
| 484 streamIndentor si(ss); | |
| 485 ExceptionTable table(method); | |
| 486 if (table.length() > 0) { | |
| 487 ss->indent().print_cr("Exception Handler Table:"); | |
| 488 streamIndentor si2(ss); | |
| 489 for (int i = 0; i < table.length(); ++i) { | |
| 490 ss->indent().print_cr("bci [%d, %d] => handler: %d", table.start_pc(i), | |
| 491 table.end_pc(i), table.handler_pc(i)); | |
| 492 } | |
| 493 } | |
| 494 } | |
| 495 } | |
| 496 | |
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497 void ErrorContext::stackmap_details(outputStream* ss, const Method* method) const { |
| 6605 | 498 if (method != NULL && method->has_stackmap_table()) { |
| 499 streamIndentor si(ss); | |
| 500 ss->indent().print_cr("Stackmap Table:"); | |
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501 Array<u1>* data = method->stackmap_data(); |
| 6605 | 502 stack_map_table* sm_table = |
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503 stack_map_table::at((address)data->adr_at(0)); |
| 6605 | 504 stack_map_frame* sm_frame = sm_table->entries(); |
| 505 streamIndentor si2(ss); | |
| 506 int current_offset = -1; | |
| 507 for (u2 i = 0; i < sm_table->number_of_entries(); ++i) { | |
| 508 ss->indent(); | |
| 509 sm_frame->print_on(ss, current_offset); | |
| 510 ss->print_cr(""); | |
| 511 current_offset += sm_frame->offset_delta(); | |
| 512 sm_frame = sm_frame->next(); | |
| 513 } | |
| 514 } | |
| 515 } | |
| 516 | |
| 0 | 517 // Methods in ClassVerifier |
| 518 | |
| 519 ClassVerifier::ClassVerifier( | |
| 6605 | 520 instanceKlassHandle klass, TRAPS) |
| 521 : _thread(THREAD), _exception_type(NULL), _message(NULL), _klass(klass) { | |
| 0 | 522 _this_type = VerificationType::reference_type(klass->name()); |
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523 // Create list to hold symbols in reference area. |
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524 _symbols = new GrowableArray<Symbol*>(100, 0, NULL); |
| 0 | 525 } |
| 526 | |
| 527 ClassVerifier::~ClassVerifier() { | |
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528 // Decrement the reference count for any symbols created. |
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529 for (int i = 0; i < _symbols->length(); i++) { |
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530 Symbol* s = _symbols->at(i); |
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531 s->decrement_refcount(); |
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532 } |
| 0 | 533 } |
| 534 | |
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535 VerificationType ClassVerifier::object_type() const { |
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536 return VerificationType::reference_type(vmSymbols::java_lang_Object()); |
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537 } |
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538 |
| 6605 | 539 TypeOrigin ClassVerifier::ref_ctx(const char* sig, TRAPS) { |
| 540 VerificationType vt = VerificationType::reference_type( | |
| 541 create_temporary_symbol(sig, (int)strlen(sig), THREAD)); | |
| 542 return TypeOrigin::implicit(vt); | |
| 543 } | |
| 544 | |
| 0 | 545 void ClassVerifier::verify_class(TRAPS) { |
| 6605 | 546 if (VerboseVerification) { |
| 0 | 547 tty->print_cr("Verifying class %s with new format", |
| 548 _klass->external_name()); | |
| 549 } | |
| 550 | |
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551 Array<Method*>* methods = _klass->methods(); |
| 0 | 552 int num_methods = methods->length(); |
| 553 | |
| 554 for (int index = 0; index < num_methods; index++) { | |
| 1570 | 555 // Check for recursive re-verification before each method. |
| 556 if (was_recursively_verified()) return; | |
| 557 | |
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558 Method* m = methods->at(index); |
| 6934 | 559 if (m->is_native() || m->is_abstract() || m->is_overpass()) { |
| 0 | 560 // If m is native or abstract, skip it. It is checked in class file |
| 6934 | 561 // parser that methods do not override a final method. Overpass methods |
| 562 // are trusted since the VM generates them. | |
| 0 | 563 continue; |
| 564 } | |
| 565 verify_method(methodHandle(THREAD, m), CHECK_VERIFY(this)); | |
| 566 } | |
| 1570 | 567 |
| 6605 | 568 if (VerboseVerification || TraceClassInitialization) { |
| 1570 | 569 if (was_recursively_verified()) |
| 570 tty->print_cr("Recursive verification detected for: %s", | |
| 571 _klass->external_name()); | |
| 572 } | |
| 0 | 573 } |
| 574 | |
| 575 void ClassVerifier::verify_method(methodHandle m, TRAPS) { | |
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576 HandleMark hm(THREAD); |
| 0 | 577 _method = m; // initialize _method |
| 6605 | 578 if (VerboseVerification) { |
| 0 | 579 tty->print_cr("Verifying method %s", m->name_and_sig_as_C_string()); |
| 580 } | |
| 581 | |
| 582 const char* bad_type_msg = "Bad type on operand stack in %s"; | |
| 583 | |
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584 int32_t max_stack = m->verifier_max_stack(); |
| 0 | 585 int32_t max_locals = m->max_locals(); |
| 586 constantPoolHandle cp(THREAD, m->constants()); | |
| 587 | |
| 588 if (!SignatureVerifier::is_valid_method_signature(m->signature())) { | |
| 589 class_format_error("Invalid method signature"); | |
| 590 return; | |
| 591 } | |
| 592 | |
| 593 // Initial stack map frame: offset is 0, stack is initially empty. | |
| 594 StackMapFrame current_frame(max_locals, max_stack, this); | |
| 595 // Set initial locals | |
| 596 VerificationType return_type = current_frame.set_locals_from_arg( | |
| 597 m, current_type(), CHECK_VERIFY(this)); | |
| 598 | |
| 599 int32_t stackmap_index = 0; // index to the stackmap array | |
| 600 | |
| 601 u4 code_length = m->code_size(); | |
| 602 | |
| 603 // Scan the bytecode and map each instruction's start offset to a number. | |
| 604 char* code_data = generate_code_data(m, code_length, CHECK_VERIFY(this)); | |
| 605 | |
| 606 int ex_min = code_length; | |
| 607 int ex_max = -1; | |
| 608 // Look through each item on the exception table. Each of the fields must refer | |
| 609 // to a legal instruction. | |
| 610 verify_exception_handler_table( | |
| 611 code_length, code_data, ex_min, ex_max, CHECK_VERIFY(this)); | |
| 612 | |
| 613 // Look through each entry on the local variable table and make sure | |
| 614 // its range of code array offsets is valid. (4169817) | |
| 615 if (m->has_localvariable_table()) { | |
| 616 verify_local_variable_table(code_length, code_data, CHECK_VERIFY(this)); | |
| 617 } | |
| 618 | |
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619 Array<u1>* stackmap_data = m->stackmap_data(); |
| 0 | 620 StackMapStream stream(stackmap_data); |
| 621 StackMapReader reader(this, &stream, code_data, code_length, THREAD); | |
| 622 StackMapTable stackmap_table(&reader, ¤t_frame, max_locals, max_stack, | |
| 623 code_data, code_length, CHECK_VERIFY(this)); | |
| 624 | |
| 6605 | 625 if (VerboseVerification) { |
| 626 stackmap_table.print_on(tty); | |
| 0 | 627 } |
| 628 | |
| 629 RawBytecodeStream bcs(m); | |
| 630 | |
| 631 // Scan the byte code linearly from the start to the end | |
| 632 bool no_control_flow = false; // Set to true when there is no direct control | |
| 633 // flow from current instruction to the next | |
| 634 // instruction in sequence | |
| 635 Bytecodes::Code opcode; | |
| 636 while (!bcs.is_last_bytecode()) { | |
| 1570 | 637 // Check for recursive re-verification before each bytecode. |
| 638 if (was_recursively_verified()) return; | |
| 639 | |
| 0 | 640 opcode = bcs.raw_next(); |
| 641 u2 bci = bcs.bci(); | |
| 642 | |
| 643 // Set current frame's offset to bci | |
| 644 current_frame.set_offset(bci); | |
| 6605 | 645 current_frame.set_mark(); |
| 0 | 646 |
| 647 // Make sure every offset in stackmap table point to the beginning to | |
| 648 // an instruction. Match current_frame to stackmap_table entry with | |
| 649 // the same offset if exists. | |
| 650 stackmap_index = verify_stackmap_table( | |
| 651 stackmap_index, bci, ¤t_frame, &stackmap_table, | |
| 652 no_control_flow, CHECK_VERIFY(this)); | |
| 653 | |
| 6605 | 654 |
| 0 | 655 bool this_uninit = false; // Set to true when invokespecial <init> initialized 'this' |
| 656 | |
| 657 // Merge with the next instruction | |
| 658 { | |
| 659 u2 index; | |
| 660 int target; | |
| 661 VerificationType type, type2; | |
| 662 VerificationType atype; | |
| 663 | |
| 664 #ifndef PRODUCT | |
| 6605 | 665 if (VerboseVerification) { |
| 666 current_frame.print_on(tty); | |
| 0 | 667 tty->print_cr("offset = %d, opcode = %s", bci, Bytecodes::name(opcode)); |
| 668 } | |
| 669 #endif | |
| 670 | |
| 671 // Make sure wide instruction is in correct format | |
| 672 if (bcs.is_wide()) { | |
| 673 if (opcode != Bytecodes::_iinc && opcode != Bytecodes::_iload && | |
| 674 opcode != Bytecodes::_aload && opcode != Bytecodes::_lload && | |
| 675 opcode != Bytecodes::_istore && opcode != Bytecodes::_astore && | |
| 676 opcode != Bytecodes::_lstore && opcode != Bytecodes::_fload && | |
| 677 opcode != Bytecodes::_dload && opcode != Bytecodes::_fstore && | |
| 678 opcode != Bytecodes::_dstore) { | |
| 6605 | 679 /* Unreachable? RawBytecodeStream's raw_next() returns 'illegal' |
| 680 * if we encounter a wide instruction that modifies an invalid | |
| 681 * opcode (not one of the ones listed above) */ | |
| 682 verify_error(ErrorContext::bad_code(bci), "Bad wide instruction"); | |
| 0 | 683 return; |
| 684 } | |
| 685 } | |
| 686 | |
| 687 switch (opcode) { | |
| 688 case Bytecodes::_nop : | |
| 689 no_control_flow = false; break; | |
| 690 case Bytecodes::_aconst_null : | |
| 691 current_frame.push_stack( | |
| 692 VerificationType::null_type(), CHECK_VERIFY(this)); | |
| 693 no_control_flow = false; break; | |
| 694 case Bytecodes::_iconst_m1 : | |
| 695 case Bytecodes::_iconst_0 : | |
| 696 case Bytecodes::_iconst_1 : | |
| 697 case Bytecodes::_iconst_2 : | |
| 698 case Bytecodes::_iconst_3 : | |
| 699 case Bytecodes::_iconst_4 : | |
| 700 case Bytecodes::_iconst_5 : | |
| 701 current_frame.push_stack( | |
| 702 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 703 no_control_flow = false; break; | |
| 704 case Bytecodes::_lconst_0 : | |
| 705 case Bytecodes::_lconst_1 : | |
| 706 current_frame.push_stack_2( | |
| 707 VerificationType::long_type(), | |
| 708 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 709 no_control_flow = false; break; | |
| 710 case Bytecodes::_fconst_0 : | |
| 711 case Bytecodes::_fconst_1 : | |
| 712 case Bytecodes::_fconst_2 : | |
| 713 current_frame.push_stack( | |
| 714 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 715 no_control_flow = false; break; | |
| 716 case Bytecodes::_dconst_0 : | |
| 717 case Bytecodes::_dconst_1 : | |
| 718 current_frame.push_stack_2( | |
| 719 VerificationType::double_type(), | |
| 720 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 721 no_control_flow = false; break; | |
| 722 case Bytecodes::_sipush : | |
| 723 case Bytecodes::_bipush : | |
| 724 current_frame.push_stack( | |
| 725 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 726 no_control_flow = false; break; | |
| 727 case Bytecodes::_ldc : | |
| 728 verify_ldc( | |
| 1565 | 729 opcode, bcs.get_index_u1(), ¤t_frame, |
| 0 | 730 cp, bci, CHECK_VERIFY(this)); |
| 731 no_control_flow = false; break; | |
| 732 case Bytecodes::_ldc_w : | |
| 733 case Bytecodes::_ldc2_w : | |
| 734 verify_ldc( | |
| 1565 | 735 opcode, bcs.get_index_u2(), ¤t_frame, |
| 0 | 736 cp, bci, CHECK_VERIFY(this)); |
| 737 no_control_flow = false; break; | |
| 738 case Bytecodes::_iload : | |
| 739 verify_iload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 740 no_control_flow = false; break; | |
| 741 case Bytecodes::_iload_0 : | |
| 742 case Bytecodes::_iload_1 : | |
| 743 case Bytecodes::_iload_2 : | |
| 744 case Bytecodes::_iload_3 : | |
| 745 index = opcode - Bytecodes::_iload_0; | |
| 746 verify_iload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 747 no_control_flow = false; break; | |
| 748 case Bytecodes::_lload : | |
| 749 verify_lload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 750 no_control_flow = false; break; | |
| 751 case Bytecodes::_lload_0 : | |
| 752 case Bytecodes::_lload_1 : | |
| 753 case Bytecodes::_lload_2 : | |
| 754 case Bytecodes::_lload_3 : | |
| 755 index = opcode - Bytecodes::_lload_0; | |
| 756 verify_lload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 757 no_control_flow = false; break; | |
| 758 case Bytecodes::_fload : | |
| 759 verify_fload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 760 no_control_flow = false; break; | |
| 761 case Bytecodes::_fload_0 : | |
| 762 case Bytecodes::_fload_1 : | |
| 763 case Bytecodes::_fload_2 : | |
| 764 case Bytecodes::_fload_3 : | |
| 765 index = opcode - Bytecodes::_fload_0; | |
| 766 verify_fload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 767 no_control_flow = false; break; | |
| 768 case Bytecodes::_dload : | |
| 769 verify_dload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 770 no_control_flow = false; break; | |
| 771 case Bytecodes::_dload_0 : | |
| 772 case Bytecodes::_dload_1 : | |
| 773 case Bytecodes::_dload_2 : | |
| 774 case Bytecodes::_dload_3 : | |
| 775 index = opcode - Bytecodes::_dload_0; | |
| 776 verify_dload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 777 no_control_flow = false; break; | |
| 778 case Bytecodes::_aload : | |
| 779 verify_aload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 780 no_control_flow = false; break; | |
| 781 case Bytecodes::_aload_0 : | |
| 782 case Bytecodes::_aload_1 : | |
| 783 case Bytecodes::_aload_2 : | |
| 784 case Bytecodes::_aload_3 : | |
| 785 index = opcode - Bytecodes::_aload_0; | |
| 786 verify_aload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 787 no_control_flow = false; break; | |
| 788 case Bytecodes::_iaload : | |
| 789 type = current_frame.pop_stack( | |
| 790 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 791 atype = current_frame.pop_stack( | |
| 792 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 793 if (!atype.is_int_array()) { | |
| 6605 | 794 verify_error(ErrorContext::bad_type(bci, |
| 795 current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), | |
| 796 bad_type_msg, "iaload"); | |
| 0 | 797 return; |
| 798 } | |
| 799 current_frame.push_stack( | |
| 800 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 801 no_control_flow = false; break; | |
| 802 case Bytecodes::_baload : | |
| 803 type = current_frame.pop_stack( | |
| 804 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 805 atype = current_frame.pop_stack( | |
| 806 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 807 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
| 6605 | 808 verify_error( |
| 809 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 810 bad_type_msg, "baload"); | |
| 0 | 811 return; |
| 812 } | |
| 813 current_frame.push_stack( | |
| 814 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 815 no_control_flow = false; break; | |
| 816 case Bytecodes::_caload : | |
| 817 type = current_frame.pop_stack( | |
| 818 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 819 atype = current_frame.pop_stack( | |
| 820 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 821 if (!atype.is_char_array()) { | |
| 6605 | 822 verify_error(ErrorContext::bad_type(bci, |
| 823 current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), | |
| 824 bad_type_msg, "caload"); | |
| 0 | 825 return; |
| 826 } | |
| 827 current_frame.push_stack( | |
| 828 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 829 no_control_flow = false; break; | |
| 830 case Bytecodes::_saload : | |
| 831 type = current_frame.pop_stack( | |
| 832 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 833 atype = current_frame.pop_stack( | |
| 834 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 835 if (!atype.is_short_array()) { | |
| 6605 | 836 verify_error(ErrorContext::bad_type(bci, |
| 837 current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), | |
| 838 bad_type_msg, "saload"); | |
| 0 | 839 return; |
| 840 } | |
| 841 current_frame.push_stack( | |
| 842 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 843 no_control_flow = false; break; | |
| 844 case Bytecodes::_laload : | |
| 845 type = current_frame.pop_stack( | |
| 846 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 847 atype = current_frame.pop_stack( | |
| 848 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 849 if (!atype.is_long_array()) { | |
| 6605 | 850 verify_error(ErrorContext::bad_type(bci, |
| 851 current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), | |
| 852 bad_type_msg, "laload"); | |
| 0 | 853 return; |
| 854 } | |
| 855 current_frame.push_stack_2( | |
| 856 VerificationType::long_type(), | |
| 857 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 858 no_control_flow = false; break; | |
| 859 case Bytecodes::_faload : | |
| 860 type = current_frame.pop_stack( | |
| 861 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 862 atype = current_frame.pop_stack( | |
| 863 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 864 if (!atype.is_float_array()) { | |
| 6605 | 865 verify_error(ErrorContext::bad_type(bci, |
| 866 current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), | |
| 867 bad_type_msg, "faload"); | |
| 0 | 868 return; |
| 869 } | |
| 870 current_frame.push_stack( | |
| 871 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 872 no_control_flow = false; break; | |
| 873 case Bytecodes::_daload : | |
| 874 type = current_frame.pop_stack( | |
| 875 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 876 atype = current_frame.pop_stack( | |
| 877 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 878 if (!atype.is_double_array()) { | |
| 6605 | 879 verify_error(ErrorContext::bad_type(bci, |
| 880 current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), | |
| 881 bad_type_msg, "daload"); | |
| 0 | 882 return; |
| 883 } | |
| 884 current_frame.push_stack_2( | |
| 885 VerificationType::double_type(), | |
| 886 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 887 no_control_flow = false; break; | |
| 888 case Bytecodes::_aaload : { | |
| 889 type = current_frame.pop_stack( | |
| 890 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 891 atype = current_frame.pop_stack( | |
| 892 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 893 if (!atype.is_reference_array()) { | |
| 6605 | 894 verify_error(ErrorContext::bad_type(bci, |
| 895 current_frame.stack_top_ctx(), | |
| 896 TypeOrigin::implicit(VerificationType::reference_check())), | |
| 897 bad_type_msg, "aaload"); | |
| 0 | 898 return; |
| 899 } | |
| 900 if (atype.is_null()) { | |
| 901 current_frame.push_stack( | |
| 902 VerificationType::null_type(), CHECK_VERIFY(this)); | |
| 903 } else { | |
| 904 VerificationType component = | |
|
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changeset
|
905 atype.get_component(this, CHECK_VERIFY(this)); |
| 0 | 906 current_frame.push_stack(component, CHECK_VERIFY(this)); |
| 907 } | |
| 908 no_control_flow = false; break; | |
| 909 } | |
| 910 case Bytecodes::_istore : | |
| 911 verify_istore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 912 no_control_flow = false; break; | |
| 913 case Bytecodes::_istore_0 : | |
| 914 case Bytecodes::_istore_1 : | |
| 915 case Bytecodes::_istore_2 : | |
| 916 case Bytecodes::_istore_3 : | |
| 917 index = opcode - Bytecodes::_istore_0; | |
| 918 verify_istore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 919 no_control_flow = false; break; | |
| 920 case Bytecodes::_lstore : | |
| 921 verify_lstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 922 no_control_flow = false; break; | |
| 923 case Bytecodes::_lstore_0 : | |
| 924 case Bytecodes::_lstore_1 : | |
| 925 case Bytecodes::_lstore_2 : | |
| 926 case Bytecodes::_lstore_3 : | |
| 927 index = opcode - Bytecodes::_lstore_0; | |
| 928 verify_lstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 929 no_control_flow = false; break; | |
| 930 case Bytecodes::_fstore : | |
| 931 verify_fstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 932 no_control_flow = false; break; | |
| 933 case Bytecodes::_fstore_0 : | |
| 934 case Bytecodes::_fstore_1 : | |
| 935 case Bytecodes::_fstore_2 : | |
| 936 case Bytecodes::_fstore_3 : | |
| 937 index = opcode - Bytecodes::_fstore_0; | |
| 938 verify_fstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 939 no_control_flow = false; break; | |
| 940 case Bytecodes::_dstore : | |
| 941 verify_dstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 942 no_control_flow = false; break; | |
| 943 case Bytecodes::_dstore_0 : | |
| 944 case Bytecodes::_dstore_1 : | |
| 945 case Bytecodes::_dstore_2 : | |
| 946 case Bytecodes::_dstore_3 : | |
| 947 index = opcode - Bytecodes::_dstore_0; | |
| 948 verify_dstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 949 no_control_flow = false; break; | |
| 950 case Bytecodes::_astore : | |
| 951 verify_astore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 952 no_control_flow = false; break; | |
| 953 case Bytecodes::_astore_0 : | |
| 954 case Bytecodes::_astore_1 : | |
| 955 case Bytecodes::_astore_2 : | |
| 956 case Bytecodes::_astore_3 : | |
| 957 index = opcode - Bytecodes::_astore_0; | |
| 958 verify_astore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 959 no_control_flow = false; break; | |
| 960 case Bytecodes::_iastore : | |
| 961 type = current_frame.pop_stack( | |
| 962 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 963 type2 = current_frame.pop_stack( | |
| 964 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 965 atype = current_frame.pop_stack( | |
| 966 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 967 if (!atype.is_int_array()) { | |
| 6605 | 968 verify_error(ErrorContext::bad_type(bci, |
| 969 current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), | |
| 970 bad_type_msg, "iastore"); | |
| 0 | 971 return; |
| 972 } | |
| 973 no_control_flow = false; break; | |
| 974 case Bytecodes::_bastore : | |
| 975 type = current_frame.pop_stack( | |
| 976 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 977 type2 = current_frame.pop_stack( | |
| 978 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 979 atype = current_frame.pop_stack( | |
| 980 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 981 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
| 6605 | 982 verify_error( |
| 983 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 984 bad_type_msg, "bastore"); | |
| 0 | 985 return; |
| 986 } | |
| 987 no_control_flow = false; break; | |
| 988 case Bytecodes::_castore : | |
| 989 current_frame.pop_stack( | |
| 990 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 991 current_frame.pop_stack( | |
| 992 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 993 atype = current_frame.pop_stack( | |
| 994 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 995 if (!atype.is_char_array()) { | |
| 6605 | 996 verify_error(ErrorContext::bad_type(bci, |
| 997 current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), | |
| 998 bad_type_msg, "castore"); | |
| 0 | 999 return; |
| 1000 } | |
| 1001 no_control_flow = false; break; | |
| 1002 case Bytecodes::_sastore : | |
| 1003 current_frame.pop_stack( | |
| 1004 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1005 current_frame.pop_stack( | |
| 1006 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1007 atype = current_frame.pop_stack( | |
| 1008 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1009 if (!atype.is_short_array()) { | |
| 6605 | 1010 verify_error(ErrorContext::bad_type(bci, |
| 1011 current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), | |
| 1012 bad_type_msg, "sastore"); | |
| 0 | 1013 return; |
| 1014 } | |
| 1015 no_control_flow = false; break; | |
| 1016 case Bytecodes::_lastore : | |
| 1017 current_frame.pop_stack_2( | |
| 1018 VerificationType::long2_type(), | |
| 1019 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1020 current_frame.pop_stack( | |
| 1021 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1022 atype = current_frame.pop_stack( | |
| 1023 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1024 if (!atype.is_long_array()) { | |
| 6605 | 1025 verify_error(ErrorContext::bad_type(bci, |
| 1026 current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), | |
| 1027 bad_type_msg, "lastore"); | |
| 0 | 1028 return; |
| 1029 } | |
| 1030 no_control_flow = false; break; | |
| 1031 case Bytecodes::_fastore : | |
| 1032 current_frame.pop_stack( | |
| 1033 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1034 current_frame.pop_stack | |
| 1035 (VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1036 atype = current_frame.pop_stack( | |
| 1037 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1038 if (!atype.is_float_array()) { | |
| 6605 | 1039 verify_error(ErrorContext::bad_type(bci, |
| 1040 current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), | |
| 1041 bad_type_msg, "fastore"); | |
| 0 | 1042 return; |
| 1043 } | |
| 1044 no_control_flow = false; break; | |
| 1045 case Bytecodes::_dastore : | |
| 1046 current_frame.pop_stack_2( | |
| 1047 VerificationType::double2_type(), | |
| 1048 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1049 current_frame.pop_stack( | |
| 1050 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1051 atype = current_frame.pop_stack( | |
| 1052 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1053 if (!atype.is_double_array()) { | |
| 6605 | 1054 verify_error(ErrorContext::bad_type(bci, |
| 1055 current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), | |
| 1056 bad_type_msg, "dastore"); | |
| 0 | 1057 return; |
| 1058 } | |
| 1059 no_control_flow = false; break; | |
| 1060 case Bytecodes::_aastore : | |
|
1955
1070423b51f3
6865028: Illegal instructions passing verification prior to 'invokespecial Object.<init>'
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1678
diff
changeset
|
1061 type = current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1062 type2 = current_frame.pop_stack( |
| 1063 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1064 atype = current_frame.pop_stack( | |
| 1065 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1066 // more type-checking is done at runtime | |
| 1067 if (!atype.is_reference_array()) { | |
| 6605 | 1068 verify_error(ErrorContext::bad_type(bci, |
| 1069 current_frame.stack_top_ctx(), | |
| 1070 TypeOrigin::implicit(VerificationType::reference_check())), | |
| 1071 bad_type_msg, "aastore"); | |
| 0 | 1072 return; |
| 1073 } | |
| 1074 // 4938384: relaxed constraint in JVMS 3nd edition. | |
| 1075 no_control_flow = false; break; | |
| 1076 case Bytecodes::_pop : | |
| 1077 current_frame.pop_stack( | |
| 1078 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1079 no_control_flow = false; break; | |
| 1080 case Bytecodes::_pop2 : | |
| 1081 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1082 if (type.is_category1()) { | |
| 1083 current_frame.pop_stack( | |
| 1084 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1085 } else if (type.is_category2_2nd()) { | |
| 1086 current_frame.pop_stack( | |
| 1087 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1088 } else { | |
| 6605 | 1089 /* Unreachable? Would need a category2_1st on TOS |
| 1090 * which does not appear possible. */ | |
| 1091 verify_error( | |
| 1092 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1093 bad_type_msg, "pop2"); | |
| 0 | 1094 return; |
| 1095 } | |
| 1096 no_control_flow = false; break; | |
| 1097 case Bytecodes::_dup : | |
| 1098 type = current_frame.pop_stack( | |
| 1099 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1100 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1101 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1102 no_control_flow = false; break; | |
| 1103 case Bytecodes::_dup_x1 : | |
| 1104 type = current_frame.pop_stack( | |
| 1105 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1106 type2 = current_frame.pop_stack( | |
| 1107 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1108 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1109 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1110 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1111 no_control_flow = false; break; | |
| 1112 case Bytecodes::_dup_x2 : | |
| 1113 { | |
| 1114 VerificationType type3; | |
| 1115 type = current_frame.pop_stack( | |
| 1116 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1117 type2 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1118 if (type2.is_category1()) { | |
| 1119 type3 = current_frame.pop_stack( | |
| 1120 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1121 } else if (type2.is_category2_2nd()) { | |
| 1122 type3 = current_frame.pop_stack( | |
| 1123 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1124 } else { | |
| 6605 | 1125 /* Unreachable? Would need a category2_1st at stack depth 2 with |
| 1126 * a category1 on TOS which does not appear possible. */ | |
| 1127 verify_error(ErrorContext::bad_type( | |
| 1128 bci, current_frame.stack_top_ctx()), bad_type_msg, "dup_x2"); | |
| 0 | 1129 return; |
| 1130 } | |
| 1131 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1132 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 1133 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1134 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1135 no_control_flow = false; break; | |
| 1136 } | |
| 1137 case Bytecodes::_dup2 : | |
| 1138 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1139 if (type.is_category1()) { | |
| 1140 type2 = current_frame.pop_stack( | |
| 1141 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1142 } else if (type.is_category2_2nd()) { | |
| 1143 type2 = current_frame.pop_stack( | |
| 1144 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1145 } else { | |
| 6605 | 1146 /* Unreachable? Would need a category2_1st on TOS which does not |
| 1147 * appear possible. */ | |
| 1148 verify_error( | |
| 1149 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1150 bad_type_msg, "dup2"); | |
| 0 | 1151 return; |
| 1152 } | |
| 1153 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1154 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1155 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1156 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1157 no_control_flow = false; break; | |
| 1158 case Bytecodes::_dup2_x1 : | |
| 1159 { | |
| 1160 VerificationType type3; | |
| 1161 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1162 if (type.is_category1()) { | |
| 1163 type2 = current_frame.pop_stack( | |
| 1164 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 6605 | 1165 } else if (type.is_category2_2nd()) { |
| 1166 type2 = current_frame.pop_stack( | |
| 1167 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 0 | 1168 } else { |
| 6605 | 1169 /* Unreachable? Would need a category2_1st on TOS which does |
| 1170 * not appear possible. */ | |
| 1171 verify_error( | |
| 1172 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1173 bad_type_msg, "dup2_x1"); | |
| 0 | 1174 return; |
| 1175 } | |
| 1176 type3 = current_frame.pop_stack( | |
| 1177 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1178 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1179 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1180 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 1181 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1182 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1183 no_control_flow = false; break; | |
| 1184 } | |
| 1185 case Bytecodes::_dup2_x2 : | |
| 1186 { | |
| 1187 VerificationType type3, type4; | |
| 1188 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1189 if (type.is_category1()) { | |
| 1190 type2 = current_frame.pop_stack( | |
| 1191 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1192 } else if (type.is_category2_2nd()) { | |
| 1193 type2 = current_frame.pop_stack( | |
| 1194 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1195 } else { | |
| 6605 | 1196 /* Unreachable? Would need a category2_1st on TOS which does |
| 1197 * not appear possible. */ | |
| 1198 verify_error( | |
| 1199 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1200 bad_type_msg, "dup2_x2"); | |
| 0 | 1201 return; |
| 1202 } | |
| 1203 type3 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1204 if (type3.is_category1()) { | |
| 1205 type4 = current_frame.pop_stack( | |
| 1206 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1207 } else if (type3.is_category2_2nd()) { | |
| 1208 type4 = current_frame.pop_stack( | |
| 1209 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1210 } else { | |
| 6605 | 1211 /* Unreachable? Would need a category2_1st on TOS after popping |
| 1212 * a long/double or two category 1's, which does not | |
| 1213 * appear possible. */ | |
| 1214 verify_error( | |
| 1215 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1216 bad_type_msg, "dup2_x2"); | |
| 0 | 1217 return; |
| 1218 } | |
| 1219 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1220 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1221 current_frame.push_stack(type4, CHECK_VERIFY(this)); | |
| 1222 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 1223 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1224 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1225 no_control_flow = false; break; | |
| 1226 } | |
| 1227 case Bytecodes::_swap : | |
| 1228 type = current_frame.pop_stack( | |
| 1229 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1230 type2 = current_frame.pop_stack( | |
| 1231 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1232 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1233 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1234 no_control_flow = false; break; | |
| 1235 case Bytecodes::_iadd : | |
| 1236 case Bytecodes::_isub : | |
| 1237 case Bytecodes::_imul : | |
| 1238 case Bytecodes::_idiv : | |
| 1239 case Bytecodes::_irem : | |
| 1240 case Bytecodes::_ishl : | |
| 1241 case Bytecodes::_ishr : | |
| 1242 case Bytecodes::_iushr : | |
| 1243 case Bytecodes::_ior : | |
| 1244 case Bytecodes::_ixor : | |
| 1245 case Bytecodes::_iand : | |
| 1246 current_frame.pop_stack( | |
| 1247 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1248 // fall through | |
| 1249 case Bytecodes::_ineg : | |
| 1250 current_frame.pop_stack( | |
| 1251 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1252 current_frame.push_stack( | |
| 1253 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1254 no_control_flow = false; break; | |
| 1255 case Bytecodes::_ladd : | |
| 1256 case Bytecodes::_lsub : | |
| 1257 case Bytecodes::_lmul : | |
| 1258 case Bytecodes::_ldiv : | |
| 1259 case Bytecodes::_lrem : | |
| 1260 case Bytecodes::_land : | |
| 1261 case Bytecodes::_lor : | |
| 1262 case Bytecodes::_lxor : | |
| 1263 current_frame.pop_stack_2( | |
| 1264 VerificationType::long2_type(), | |
| 1265 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1266 // fall through | |
| 1267 case Bytecodes::_lneg : | |
| 1268 current_frame.pop_stack_2( | |
| 1269 VerificationType::long2_type(), | |
| 1270 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1271 current_frame.push_stack_2( | |
| 1272 VerificationType::long_type(), | |
| 1273 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1274 no_control_flow = false; break; | |
| 1275 case Bytecodes::_lshl : | |
| 1276 case Bytecodes::_lshr : | |
| 1277 case Bytecodes::_lushr : | |
| 1278 current_frame.pop_stack( | |
| 1279 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1280 current_frame.pop_stack_2( | |
| 1281 VerificationType::long2_type(), | |
| 1282 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1283 current_frame.push_stack_2( | |
| 1284 VerificationType::long_type(), | |
| 1285 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1286 no_control_flow = false; break; | |
| 1287 case Bytecodes::_fadd : | |
| 1288 case Bytecodes::_fsub : | |
| 1289 case Bytecodes::_fmul : | |
| 1290 case Bytecodes::_fdiv : | |
| 1291 case Bytecodes::_frem : | |
| 1292 current_frame.pop_stack( | |
| 1293 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1294 // fall through | |
| 1295 case Bytecodes::_fneg : | |
| 1296 current_frame.pop_stack( | |
| 1297 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1298 current_frame.push_stack( | |
| 1299 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1300 no_control_flow = false; break; | |
| 1301 case Bytecodes::_dadd : | |
| 1302 case Bytecodes::_dsub : | |
| 1303 case Bytecodes::_dmul : | |
| 1304 case Bytecodes::_ddiv : | |
| 1305 case Bytecodes::_drem : | |
| 1306 current_frame.pop_stack_2( | |
| 1307 VerificationType::double2_type(), | |
| 1308 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1309 // fall through | |
| 1310 case Bytecodes::_dneg : | |
| 1311 current_frame.pop_stack_2( | |
| 1312 VerificationType::double2_type(), | |
| 1313 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1314 current_frame.push_stack_2( | |
| 1315 VerificationType::double_type(), | |
| 1316 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1317 no_control_flow = false; break; | |
| 1318 case Bytecodes::_iinc : | |
| 1319 verify_iinc(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 1320 no_control_flow = false; break; | |
| 1321 case Bytecodes::_i2l : | |
| 1322 type = current_frame.pop_stack( | |
| 1323 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1324 current_frame.push_stack_2( | |
| 1325 VerificationType::long_type(), | |
| 1326 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1327 no_control_flow = false; break; | |
| 1328 case Bytecodes::_l2i : | |
| 1329 current_frame.pop_stack_2( | |
| 1330 VerificationType::long2_type(), | |
| 1331 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1332 current_frame.push_stack( | |
| 1333 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1334 no_control_flow = false; break; | |
| 1335 case Bytecodes::_i2f : | |
| 1336 current_frame.pop_stack( | |
| 1337 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1338 current_frame.push_stack( | |
| 1339 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1340 no_control_flow = false; break; | |
| 1341 case Bytecodes::_i2d : | |
| 1342 current_frame.pop_stack( | |
| 1343 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1344 current_frame.push_stack_2( | |
| 1345 VerificationType::double_type(), | |
| 1346 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1347 no_control_flow = false; break; | |
| 1348 case Bytecodes::_l2f : | |
| 1349 current_frame.pop_stack_2( | |
| 1350 VerificationType::long2_type(), | |
| 1351 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1352 current_frame.push_stack( | |
| 1353 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1354 no_control_flow = false; break; | |
| 1355 case Bytecodes::_l2d : | |
| 1356 current_frame.pop_stack_2( | |
| 1357 VerificationType::long2_type(), | |
| 1358 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1359 current_frame.push_stack_2( | |
| 1360 VerificationType::double_type(), | |
| 1361 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1362 no_control_flow = false; break; | |
| 1363 case Bytecodes::_f2i : | |
| 1364 current_frame.pop_stack( | |
| 1365 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1366 current_frame.push_stack( | |
| 1367 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1368 no_control_flow = false; break; | |
| 1369 case Bytecodes::_f2l : | |
| 1370 current_frame.pop_stack( | |
| 1371 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1372 current_frame.push_stack_2( | |
| 1373 VerificationType::long_type(), | |
| 1374 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1375 no_control_flow = false; break; | |
| 1376 case Bytecodes::_f2d : | |
| 1377 current_frame.pop_stack( | |
| 1378 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1379 current_frame.push_stack_2( | |
| 1380 VerificationType::double_type(), | |
| 1381 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1382 no_control_flow = false; break; | |
| 1383 case Bytecodes::_d2i : | |
| 1384 current_frame.pop_stack_2( | |
| 1385 VerificationType::double2_type(), | |
| 1386 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1387 current_frame.push_stack( | |
| 1388 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1389 no_control_flow = false; break; | |
| 1390 case Bytecodes::_d2l : | |
| 1391 current_frame.pop_stack_2( | |
| 1392 VerificationType::double2_type(), | |
| 1393 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1394 current_frame.push_stack_2( | |
| 1395 VerificationType::long_type(), | |
| 1396 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1397 no_control_flow = false; break; | |
| 1398 case Bytecodes::_d2f : | |
| 1399 current_frame.pop_stack_2( | |
| 1400 VerificationType::double2_type(), | |
| 1401 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1402 current_frame.push_stack( | |
| 1403 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1404 no_control_flow = false; break; | |
| 1405 case Bytecodes::_i2b : | |
| 1406 case Bytecodes::_i2c : | |
| 1407 case Bytecodes::_i2s : | |
| 1408 current_frame.pop_stack( | |
| 1409 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1410 current_frame.push_stack( | |
| 1411 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1412 no_control_flow = false; break; | |
| 1413 case Bytecodes::_lcmp : | |
| 1414 current_frame.pop_stack_2( | |
| 1415 VerificationType::long2_type(), | |
| 1416 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1417 current_frame.pop_stack_2( | |
| 1418 VerificationType::long2_type(), | |
| 1419 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1420 current_frame.push_stack( | |
| 1421 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1422 no_control_flow = false; break; | |
| 1423 case Bytecodes::_fcmpl : | |
| 1424 case Bytecodes::_fcmpg : | |
| 1425 current_frame.pop_stack( | |
| 1426 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1427 current_frame.pop_stack( | |
| 1428 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1429 current_frame.push_stack( | |
| 1430 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1431 no_control_flow = false; break; | |
| 1432 case Bytecodes::_dcmpl : | |
| 1433 case Bytecodes::_dcmpg : | |
| 1434 current_frame.pop_stack_2( | |
| 1435 VerificationType::double2_type(), | |
| 1436 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1437 current_frame.pop_stack_2( | |
| 1438 VerificationType::double2_type(), | |
| 1439 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1440 current_frame.push_stack( | |
| 1441 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1442 no_control_flow = false; break; | |
| 1443 case Bytecodes::_if_icmpeq: | |
| 1444 case Bytecodes::_if_icmpne: | |
| 1445 case Bytecodes::_if_icmplt: | |
| 1446 case Bytecodes::_if_icmpge: | |
| 1447 case Bytecodes::_if_icmpgt: | |
| 1448 case Bytecodes::_if_icmple: | |
| 1449 current_frame.pop_stack( | |
| 1450 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1451 // fall through | |
| 1452 case Bytecodes::_ifeq: | |
| 1453 case Bytecodes::_ifne: | |
| 1454 case Bytecodes::_iflt: | |
| 1455 case Bytecodes::_ifge: | |
| 1456 case Bytecodes::_ifgt: | |
| 1457 case Bytecodes::_ifle: | |
| 1458 current_frame.pop_stack( | |
| 1459 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1460 target = bcs.dest(); | |
| 1461 stackmap_table.check_jump_target( | |
| 1462 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1463 no_control_flow = false; break; | |
| 1464 case Bytecodes::_if_acmpeq : | |
| 1465 case Bytecodes::_if_acmpne : | |
| 1466 current_frame.pop_stack( | |
| 1467 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1468 // fall through | |
| 1469 case Bytecodes::_ifnull : | |
| 1470 case Bytecodes::_ifnonnull : | |
| 1471 current_frame.pop_stack( | |
| 1472 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1473 target = bcs.dest(); | |
| 1474 stackmap_table.check_jump_target | |
| 1475 (¤t_frame, target, CHECK_VERIFY(this)); | |
| 1476 no_control_flow = false; break; | |
| 1477 case Bytecodes::_goto : | |
| 1478 target = bcs.dest(); | |
| 1479 stackmap_table.check_jump_target( | |
| 1480 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1481 no_control_flow = true; break; | |
| 1482 case Bytecodes::_goto_w : | |
| 1483 target = bcs.dest_w(); | |
| 1484 stackmap_table.check_jump_target( | |
| 1485 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1486 no_control_flow = true; break; | |
| 1487 case Bytecodes::_tableswitch : | |
| 1488 case Bytecodes::_lookupswitch : | |
| 1489 verify_switch( | |
| 1490 &bcs, code_length, code_data, ¤t_frame, | |
| 1491 &stackmap_table, CHECK_VERIFY(this)); | |
| 1492 no_control_flow = true; break; | |
| 1493 case Bytecodes::_ireturn : | |
| 1494 type = current_frame.pop_stack( | |
| 1495 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 6605 | 1496 verify_return_value(return_type, type, bci, |
| 1497 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1498 no_control_flow = true; break; |
| 1499 case Bytecodes::_lreturn : | |
| 1500 type2 = current_frame.pop_stack( | |
| 1501 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1502 type = current_frame.pop_stack( | |
| 1503 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 6605 | 1504 verify_return_value(return_type, type, bci, |
| 1505 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1506 no_control_flow = true; break; |
| 1507 case Bytecodes::_freturn : | |
| 1508 type = current_frame.pop_stack( | |
| 1509 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 6605 | 1510 verify_return_value(return_type, type, bci, |
| 1511 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1512 no_control_flow = true; break; |
| 1513 case Bytecodes::_dreturn : | |
| 1514 type2 = current_frame.pop_stack( | |
| 1515 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1516 type = current_frame.pop_stack( | |
| 1517 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 6605 | 1518 verify_return_value(return_type, type, bci, |
| 1519 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1520 no_control_flow = true; break; |
| 1521 case Bytecodes::_areturn : | |
| 1522 type = current_frame.pop_stack( | |
| 1523 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 6605 | 1524 verify_return_value(return_type, type, bci, |
| 1525 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1526 no_control_flow = true; break; |
| 1527 case Bytecodes::_return : | |
| 1528 if (return_type != VerificationType::bogus_type()) { | |
| 6605 | 1529 verify_error(ErrorContext::bad_code(bci), |
| 1530 "Method expects a return value"); | |
| 0 | 1531 return; |
| 1532 } | |
| 1533 // Make sure "this" has been initialized if current method is an | |
| 1534 // <init> | |
| 1535 if (_method->name() == vmSymbols::object_initializer_name() && | |
| 1536 current_frame.flag_this_uninit()) { | |
| 6605 | 1537 verify_error(ErrorContext::bad_code(bci), |
| 1538 "Constructor must call super() or this() " | |
| 1539 "before return"); | |
| 0 | 1540 return; |
| 1541 } | |
| 1542 no_control_flow = true; break; | |
| 1543 case Bytecodes::_getstatic : | |
| 1544 case Bytecodes::_putstatic : | |
| 1545 case Bytecodes::_getfield : | |
| 1546 case Bytecodes::_putfield : | |
| 1547 verify_field_instructions( | |
| 1548 &bcs, ¤t_frame, cp, CHECK_VERIFY(this)); | |
| 1549 no_control_flow = false; break; | |
| 1550 case Bytecodes::_invokevirtual : | |
| 1551 case Bytecodes::_invokespecial : | |
| 1552 case Bytecodes::_invokestatic : | |
| 1553 verify_invoke_instructions( | |
| 1554 &bcs, code_length, ¤t_frame, | |
| 1555 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
| 1556 no_control_flow = false; break; | |
| 1557 case Bytecodes::_invokeinterface : | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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parents:
431
diff
changeset
|
1558 case Bytecodes::_invokedynamic : |
| 0 | 1559 verify_invoke_instructions( |
| 1560 &bcs, code_length, ¤t_frame, | |
| 1561 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
| 1562 no_control_flow = false; break; | |
| 1563 case Bytecodes::_new : | |
| 1564 { | |
| 1565 | 1565 index = bcs.get_index_u2(); |
| 6605 | 1566 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
| 0 | 1567 VerificationType new_class_type = |
| 1568 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 1569 if (!new_class_type.is_object()) { | |
| 6605 | 1570 verify_error(ErrorContext::bad_type(bci, |
| 1571 TypeOrigin::cp(index, new_class_type)), | |
| 1572 "Illegal new instruction"); | |
| 0 | 1573 return; |
| 1574 } | |
| 1575 type = VerificationType::uninitialized_type(bci); | |
| 1576 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1577 no_control_flow = false; break; | |
| 1578 } | |
| 1579 case Bytecodes::_newarray : | |
| 1580 type = get_newarray_type(bcs.get_index(), bci, CHECK_VERIFY(this)); | |
| 1581 current_frame.pop_stack( | |
| 1582 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1583 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1584 no_control_flow = false; break; | |
| 1585 case Bytecodes::_anewarray : | |
| 1586 verify_anewarray( | |
| 6605 | 1587 bci, bcs.get_index_u2(), cp, ¤t_frame, CHECK_VERIFY(this)); |
| 0 | 1588 no_control_flow = false; break; |
| 1589 case Bytecodes::_arraylength : | |
| 1590 type = current_frame.pop_stack( | |
| 1591 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
|
134
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6692246: Regression : JDK 6u4 b01 fails two JCK tests when fallback is switched off
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parents:
0
diff
changeset
|
1592 if (!(type.is_null() || type.is_array())) { |
| 6605 | 1593 verify_error(ErrorContext::bad_type( |
| 1594 bci, current_frame.stack_top_ctx()), | |
| 1595 bad_type_msg, "arraylength"); | |
| 0 | 1596 } |
| 1597 current_frame.push_stack( | |
| 1598 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1599 no_control_flow = false; break; | |
| 1600 case Bytecodes::_checkcast : | |
| 1601 { | |
| 1565 | 1602 index = bcs.get_index_u2(); |
| 6605 | 1603 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
|
1955
1070423b51f3
6865028: Illegal instructions passing verification prior to 'invokespecial Object.<init>'
kamg
parents:
1678
diff
changeset
|
1604 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1605 VerificationType klass_type = cp_index_to_type( |
| 1606 index, cp, CHECK_VERIFY(this)); | |
| 1607 current_frame.push_stack(klass_type, CHECK_VERIFY(this)); | |
| 1608 no_control_flow = false; break; | |
| 1609 } | |
| 1610 case Bytecodes::_instanceof : { | |
| 1565 | 1611 index = bcs.get_index_u2(); |
| 6605 | 1612 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
|
1955
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diff
changeset
|
1613 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1614 current_frame.push_stack( |
| 1615 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1616 no_control_flow = false; break; | |
| 1617 } | |
| 1618 case Bytecodes::_monitorenter : | |
| 1619 case Bytecodes::_monitorexit : | |
| 1620 current_frame.pop_stack( | |
| 1621 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1622 no_control_flow = false; break; | |
| 1623 case Bytecodes::_multianewarray : | |
| 1624 { | |
| 1565 | 1625 index = bcs.get_index_u2(); |
| 0 | 1626 u2 dim = *(bcs.bcp()+3); |
| 6605 | 1627 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
| 0 | 1628 VerificationType new_array_type = |
| 1629 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 1630 if (!new_array_type.is_array()) { | |
| 6605 | 1631 verify_error(ErrorContext::bad_type(bci, |
| 1632 TypeOrigin::cp(index, new_array_type)), | |
| 1633 "Illegal constant pool index in multianewarray instruction"); | |
| 0 | 1634 return; |
| 1635 } | |
| 1636 if (dim < 1 || new_array_type.dimensions() < dim) { | |
| 6605 | 1637 verify_error(ErrorContext::bad_code(bci), |
| 1638 "Illegal dimension in multianewarray instruction: %d", dim); | |
| 0 | 1639 return; |
| 1640 } | |
| 1641 for (int i = 0; i < dim; i++) { | |
| 1642 current_frame.pop_stack( | |
| 1643 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1644 } | |
| 1645 current_frame.push_stack(new_array_type, CHECK_VERIFY(this)); | |
| 1646 no_control_flow = false; break; | |
| 1647 } | |
| 1648 case Bytecodes::_athrow : | |
| 1649 type = VerificationType::reference_type( | |
| 1650 vmSymbols::java_lang_Throwable()); | |
| 1651 current_frame.pop_stack(type, CHECK_VERIFY(this)); | |
| 1652 no_control_flow = true; break; | |
| 1653 default: | |
| 1654 // We only need to check the valid bytecodes in class file. | |
| 1655 // And jsr and ret are not in the new class file format in JDK1.5. | |
| 6605 | 1656 verify_error(ErrorContext::bad_code(bci), |
| 1657 "Bad instruction: %02x", opcode); | |
| 0 | 1658 no_control_flow = false; |
| 1659 return; | |
| 1660 } // end switch | |
| 1661 } // end Merge with the next instruction | |
| 1662 | |
| 1663 // Look for possible jump target in exception handlers and see if it | |
| 1664 // matches current_frame | |
| 1665 if (bci >= ex_min && bci < ex_max) { | |
| 1666 verify_exception_handler_targets( | |
| 1667 bci, this_uninit, ¤t_frame, &stackmap_table, CHECK_VERIFY(this)); | |
| 1668 } | |
| 1669 } // end while | |
| 1670 | |
| 1671 // Make sure that control flow does not fall through end of the method | |
| 1672 if (!no_control_flow) { | |
| 6605 | 1673 verify_error(ErrorContext::bad_code(code_length), |
| 1674 "Control flow falls through code end"); | |
| 0 | 1675 return; |
| 1676 } | |
| 1677 } | |
| 1678 | |
| 1679 char* ClassVerifier::generate_code_data(methodHandle m, u4 code_length, TRAPS) { | |
| 1680 char* code_data = NEW_RESOURCE_ARRAY(char, code_length); | |
| 1681 memset(code_data, 0, sizeof(char) * code_length); | |
| 1682 RawBytecodeStream bcs(m); | |
| 1683 | |
| 1684 while (!bcs.is_last_bytecode()) { | |
| 1685 if (bcs.raw_next() != Bytecodes::_illegal) { | |
| 1686 int bci = bcs.bci(); | |
| 1565 | 1687 if (bcs.raw_code() == Bytecodes::_new) { |
| 0 | 1688 code_data[bci] = NEW_OFFSET; |
| 1689 } else { | |
| 1690 code_data[bci] = BYTECODE_OFFSET; | |
| 1691 } | |
| 1692 } else { | |
| 6605 | 1693 verify_error(ErrorContext::bad_code(bcs.bci()), "Bad instruction"); |
| 0 | 1694 return NULL; |
| 1695 } | |
| 1696 } | |
| 1697 | |
| 1698 return code_data; | |
| 1699 } | |
| 1700 | |
| 1701 void ClassVerifier::verify_exception_handler_table(u4 code_length, char* code_data, int& min, int& max, TRAPS) { | |
|
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1702 ExceptionTable exhandlers(_method()); |
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1703 int exlength = exhandlers.length(); |
| 0 | 1704 constantPoolHandle cp (THREAD, _method->constants()); |
| 1705 | |
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1706 for(int i = 0; i < exlength; i++) { |
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1707 //reacquire the table in case a GC happened |
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1708 ExceptionTable exhandlers(_method()); |
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1709 u2 start_pc = exhandlers.start_pc(i); |
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1710 u2 end_pc = exhandlers.end_pc(i); |
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1711 u2 handler_pc = exhandlers.handler_pc(i); |
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1712 if (start_pc >= code_length || code_data[start_pc] == 0) { |
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1713 class_format_error("Illegal exception table start_pc %d", start_pc); |
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1714 return; |
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1715 } |
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1716 if (end_pc != code_length) { // special case: end_pc == code_length |
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1717 if (end_pc > code_length || code_data[end_pc] == 0) { |
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1718 class_format_error("Illegal exception table end_pc %d", end_pc); |
| 0 | 1719 return; |
| 1720 } | |
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1721 } |
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1722 if (handler_pc >= code_length || code_data[handler_pc] == 0) { |
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1723 class_format_error("Illegal exception table handler_pc %d", handler_pc); |
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1724 return; |
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1725 } |
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1726 int catch_type_index = exhandlers.catch_type_index(i); |
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1727 if (catch_type_index != 0) { |
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1728 VerificationType catch_type = cp_index_to_type( |
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1729 catch_type_index, cp, CHECK_VERIFY(this)); |
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1730 VerificationType throwable = |
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1731 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
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1732 bool is_subclass = throwable.is_assignable_from( |
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1733 catch_type, this, CHECK_VERIFY(this)); |
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1734 if (!is_subclass) { |
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1735 // 4286534: should throw VerifyError according to recent spec change |
| 6605 | 1736 verify_error(ErrorContext::bad_type(handler_pc, |
| 1737 TypeOrigin::cp(catch_type_index, catch_type), | |
| 1738 TypeOrigin::implicit(throwable)), | |
| 1739 "Catch type is not a subclass " | |
| 1740 "of Throwable in exception handler %d", handler_pc); | |
| 0 | 1741 return; |
| 1742 } | |
| 1743 } | |
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1744 if (start_pc < min) min = start_pc; |
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1745 if (end_pc > max) max = end_pc; |
| 0 | 1746 } |
| 1747 } | |
| 1748 | |
| 1749 void ClassVerifier::verify_local_variable_table(u4 code_length, char* code_data, TRAPS) { | |
| 1750 int localvariable_table_length = _method()->localvariable_table_length(); | |
| 1751 if (localvariable_table_length > 0) { | |
| 1752 LocalVariableTableElement* table = _method()->localvariable_table_start(); | |
| 1753 for (int i = 0; i < localvariable_table_length; i++) { | |
| 1754 u2 start_bci = table[i].start_bci; | |
| 1755 u2 length = table[i].length; | |
| 1756 | |
| 1757 if (start_bci >= code_length || code_data[start_bci] == 0) { | |
| 1758 class_format_error( | |
| 1759 "Illegal local variable table start_pc %d", start_bci); | |
| 1760 return; | |
| 1761 } | |
| 1762 u4 end_bci = (u4)(start_bci + length); | |
| 1763 if (end_bci != code_length) { | |
| 1764 if (end_bci >= code_length || code_data[end_bci] == 0) { | |
| 1765 class_format_error( "Illegal local variable table length %d", length); | |
| 1766 return; | |
| 1767 } | |
| 1768 } | |
| 1769 } | |
| 1770 } | |
| 1771 } | |
| 1772 | |
| 1773 u2 ClassVerifier::verify_stackmap_table(u2 stackmap_index, u2 bci, | |
| 1774 StackMapFrame* current_frame, | |
| 1775 StackMapTable* stackmap_table, | |
| 1776 bool no_control_flow, TRAPS) { | |
| 1777 if (stackmap_index < stackmap_table->get_frame_count()) { | |
| 1778 u2 this_offset = stackmap_table->get_offset(stackmap_index); | |
| 1779 if (no_control_flow && this_offset > bci) { | |
| 6605 | 1780 verify_error(ErrorContext::missing_stackmap(bci), |
| 1781 "Expecting a stack map frame"); | |
| 0 | 1782 return 0; |
| 1783 } | |
| 1784 if (this_offset == bci) { | |
| 6605 | 1785 ErrorContext ctx; |
| 0 | 1786 // See if current stack map can be assigned to the frame in table. |
| 1787 // current_frame is the stackmap frame got from the last instruction. | |
| 1788 // If matched, current_frame will be updated by this method. | |
| 6605 | 1789 bool matches = stackmap_table->match_stackmap( |
| 0 | 1790 current_frame, this_offset, stackmap_index, |
| 6605 | 1791 !no_control_flow, true, &ctx, CHECK_VERIFY_(this, 0)); |
| 1792 if (!matches) { | |
| 0 | 1793 // report type error |
| 6605 | 1794 verify_error(ctx, "Instruction type does not match stack map"); |
| 0 | 1795 return 0; |
| 1796 } | |
| 1797 stackmap_index++; | |
| 1798 } else if (this_offset < bci) { | |
| 1799 // current_offset should have met this_offset. | |
| 1800 class_format_error("Bad stack map offset %d", this_offset); | |
| 1801 return 0; | |
| 1802 } | |
| 1803 } else if (no_control_flow) { | |
| 6605 | 1804 verify_error(ErrorContext::bad_code(bci), "Expecting a stack map frame"); |
| 0 | 1805 return 0; |
| 1806 } | |
| 1807 return stackmap_index; | |
| 1808 } | |
| 1809 | |
| 1810 void ClassVerifier::verify_exception_handler_targets(u2 bci, bool this_uninit, StackMapFrame* current_frame, | |
| 1811 StackMapTable* stackmap_table, TRAPS) { | |
| 1812 constantPoolHandle cp (THREAD, _method->constants()); | |
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1813 ExceptionTable exhandlers(_method()); |
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1814 int exlength = exhandlers.length(); |
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1815 for(int i = 0; i < exlength; i++) { |
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1816 //reacquire the table in case a GC happened |
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1817 ExceptionTable exhandlers(_method()); |
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1818 u2 start_pc = exhandlers.start_pc(i); |
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1819 u2 end_pc = exhandlers.end_pc(i); |
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1820 u2 handler_pc = exhandlers.handler_pc(i); |
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1821 int catch_type_index = exhandlers.catch_type_index(i); |
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1822 if(bci >= start_pc && bci < end_pc) { |
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1823 u1 flags = current_frame->flags(); |
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1824 if (this_uninit) { flags |= FLAG_THIS_UNINIT; } |
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1825 StackMapFrame* new_frame = current_frame->frame_in_exception_handler(flags); |
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1826 if (catch_type_index != 0) { |
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1827 // We know that this index refers to a subclass of Throwable |
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1828 VerificationType catch_type = cp_index_to_type( |
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1829 catch_type_index, cp, CHECK_VERIFY(this)); |
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1830 new_frame->push_stack(catch_type, CHECK_VERIFY(this)); |
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1831 } else { |
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1832 VerificationType throwable = |
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1833 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
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1834 new_frame->push_stack(throwable, CHECK_VERIFY(this)); |
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1835 } |
| 6605 | 1836 ErrorContext ctx; |
| 1837 bool matches = stackmap_table->match_stackmap( | |
| 1838 new_frame, handler_pc, true, false, &ctx, CHECK_VERIFY(this)); | |
| 1839 if (!matches) { | |
| 1840 verify_error(ctx, "Stack map does not match the one at " | |
| 1841 "exception handler %d", handler_pc); | |
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1842 return; |
| 0 | 1843 } |
| 1844 } | |
| 1845 } | |
| 1846 } | |
| 1847 | |
| 6605 | 1848 void ClassVerifier::verify_cp_index( |
| 1849 u2 bci, constantPoolHandle cp, int index, TRAPS) { | |
| 0 | 1850 int nconstants = cp->length(); |
| 1851 if ((index <= 0) || (index >= nconstants)) { | |
| 6605 | 1852 verify_error(ErrorContext::bad_cp_index(bci, index), |
| 1853 "Illegal constant pool index %d in class %s", | |
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1854 index, cp->pool_holder()->external_name()); |
| 0 | 1855 return; |
| 1856 } | |
| 1857 } | |
| 1858 | |
| 1859 void ClassVerifier::verify_cp_type( | |
| 6605 | 1860 u2 bci, int index, constantPoolHandle cp, unsigned int types, TRAPS) { |
| 0 | 1861 |
| 1862 // In some situations, bytecode rewriting may occur while we're verifying. | |
| 1863 // In this case, a constant pool cache exists and some indices refer to that | |
| 1570 | 1864 // instead. Be sure we don't pick up such indices by accident. |
| 1865 // We must check was_recursively_verified() before we get here. | |
| 1866 guarantee(cp->cache() == NULL, "not rewritten yet"); | |
| 0 | 1867 |
| 6605 | 1868 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); |
| 0 | 1869 unsigned int tag = cp->tag_at(index).value(); |
| 1870 if ((types & (1 << tag)) == 0) { | |
| 6605 | 1871 verify_error(ErrorContext::bad_cp_index(bci, index), |
| 0 | 1872 "Illegal type at constant pool entry %d in class %s", |
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1873 index, cp->pool_holder()->external_name()); |
| 0 | 1874 return; |
| 1875 } | |
| 1876 } | |
| 1877 | |
| 1878 void ClassVerifier::verify_cp_class_type( | |
| 6605 | 1879 u2 bci, int index, constantPoolHandle cp, TRAPS) { |
| 1880 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); | |
| 0 | 1881 constantTag tag = cp->tag_at(index); |
| 1882 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 6605 | 1883 verify_error(ErrorContext::bad_cp_index(bci, index), |
| 1884 "Illegal type at constant pool entry %d in class %s", | |
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1885 index, cp->pool_holder()->external_name()); |
| 0 | 1886 return; |
| 1887 } | |
| 1888 } | |
| 1889 | |
| 6605 | 1890 void ClassVerifier::verify_error(ErrorContext ctx, const char* msg, ...) { |
| 1891 stringStream ss; | |
| 0 | 1892 |
| 6605 | 1893 ctx.reset_frames(); |
| 0 | 1894 _exception_type = vmSymbols::java_lang_VerifyError(); |
| 6605 | 1895 _error_context = ctx; |
| 0 | 1896 va_list va; |
| 6605 | 1897 va_start(va, msg); |
| 1898 ss.vprint(msg, va); | |
| 0 | 1899 va_end(va); |
| 6605 | 1900 _message = ss.as_string(); |
| 1901 #ifdef ASSERT | |
| 1902 ResourceMark rm; | |
| 1903 const char* exception_name = _exception_type->as_C_string(); | |
| 1904 Exceptions::debug_check_abort(exception_name, NULL); | |
| 1905 #endif // ndef ASSERT | |
| 0 | 1906 } |
| 1907 | |
| 1908 void ClassVerifier::class_format_error(const char* msg, ...) { | |
| 6605 | 1909 stringStream ss; |
| 0 | 1910 _exception_type = vmSymbols::java_lang_ClassFormatError(); |
| 1911 va_list va; | |
| 1912 va_start(va, msg); | |
| 6605 | 1913 ss.vprint(msg, va); |
| 0 | 1914 va_end(va); |
| 6605 | 1915 if (!_method.is_null()) { |
| 1916 ss.print(" in method %s", _method->name_and_sig_as_C_string()); | |
| 1917 } | |
| 1918 _message = ss.as_string(); | |
| 0 | 1919 } |
| 1920 | |
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1921 Klass* ClassVerifier::load_class(Symbol* name, TRAPS) { |
| 0 | 1922 // Get current loader and protection domain first. |
| 1923 oop loader = current_class()->class_loader(); | |
| 1924 oop protection_domain = current_class()->protection_domain(); | |
| 1925 | |
| 1926 return SystemDictionary::resolve_or_fail( | |
| 1927 name, Handle(THREAD, loader), Handle(THREAD, protection_domain), | |
| 1928 true, CHECK_NULL); | |
| 1929 } | |
| 1930 | |
| 1931 bool ClassVerifier::is_protected_access(instanceKlassHandle this_class, | |
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1932 Klass* target_class, |
|
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1933 Symbol* field_name, |
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1934 Symbol* field_sig, |
| 0 | 1935 bool is_method) { |
| 1936 No_Safepoint_Verifier nosafepoint; | |
| 1937 | |
| 1938 // If target class isn't a super class of this class, we don't worry about this case | |
| 1939 if (!this_class->is_subclass_of(target_class)) { | |
| 1940 return false; | |
| 1941 } | |
| 1942 // Check if the specified method or field is protected | |
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1943 InstanceKlass* target_instance = InstanceKlass::cast(target_class); |
| 0 | 1944 fieldDescriptor fd; |
| 1945 if (is_method) { | |
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1946 Method* m = target_instance->uncached_lookup_method(field_name, field_sig); |
| 0 | 1947 if (m != NULL && m->is_protected()) { |
| 1948 if (!this_class->is_same_class_package(m->method_holder())) { | |
| 1949 return true; | |
| 1950 } | |
| 1951 } | |
| 1952 } else { | |
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1953 Klass* member_klass = target_instance->find_field(field_name, field_sig, &fd); |
| 6605 | 1954 if (member_klass != NULL && fd.is_protected()) { |
| 0 | 1955 if (!this_class->is_same_class_package(member_klass)) { |
| 1956 return true; | |
| 1957 } | |
| 1958 } | |
| 1959 } | |
| 1960 return false; | |
| 1961 } | |
| 1962 | |
| 1963 void ClassVerifier::verify_ldc( | |
| 6605 | 1964 int opcode, u2 index, StackMapFrame* current_frame, |
| 1965 constantPoolHandle cp, u2 bci, TRAPS) { | |
| 1966 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); | |
| 0 | 1967 constantTag tag = cp->tag_at(index); |
| 1968 unsigned int types; | |
| 1969 if (opcode == Bytecodes::_ldc || opcode == Bytecodes::_ldc_w) { | |
|
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1970 if (!tag.is_unresolved_klass()) { |
| 0 | 1971 types = (1 << JVM_CONSTANT_Integer) | (1 << JVM_CONSTANT_Float) |
| 1602 | 1972 | (1 << JVM_CONSTANT_String) | (1 << JVM_CONSTANT_Class) |
| 1973 | (1 << JVM_CONSTANT_MethodHandle) | (1 << JVM_CONSTANT_MethodType); | |
| 1974 // Note: The class file parser already verified the legality of | |
| 1975 // MethodHandle and MethodType constants. | |
| 6605 | 1976 verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
| 0 | 1977 } |
| 1978 } else { | |
| 1979 assert(opcode == Bytecodes::_ldc2_w, "must be ldc2_w"); | |
| 1980 types = (1 << JVM_CONSTANT_Double) | (1 << JVM_CONSTANT_Long); | |
| 6605 | 1981 verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
| 0 | 1982 } |
|
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1983 if (tag.is_string() && cp->is_pseudo_string_at(index)) { |
|
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1984 current_frame->push_stack(object_type(), CHECK_VERIFY(this)); |
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1985 } else if (tag.is_string()) { |
| 0 | 1986 current_frame->push_stack( |
| 1987 VerificationType::reference_type( | |
| 1988 vmSymbols::java_lang_String()), CHECK_VERIFY(this)); | |
| 1989 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
| 1990 current_frame->push_stack( | |
| 1991 VerificationType::reference_type( | |
| 1992 vmSymbols::java_lang_Class()), CHECK_VERIFY(this)); | |
| 1993 } else if (tag.is_int()) { | |
| 1994 current_frame->push_stack( | |
| 1995 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1996 } else if (tag.is_float()) { | |
| 1997 current_frame->push_stack( | |
| 1998 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1999 } else if (tag.is_double()) { | |
| 2000 current_frame->push_stack_2( | |
| 2001 VerificationType::double_type(), | |
| 2002 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2003 } else if (tag.is_long()) { | |
| 2004 current_frame->push_stack_2( | |
| 2005 VerificationType::long_type(), | |
| 2006 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1602 | 2007 } else if (tag.is_method_handle()) { |
| 2008 current_frame->push_stack( | |
| 2009 VerificationType::reference_type( | |
| 2460 | 2010 vmSymbols::java_lang_invoke_MethodHandle()), CHECK_VERIFY(this)); |
| 1602 | 2011 } else if (tag.is_method_type()) { |
| 2012 current_frame->push_stack( | |
| 2013 VerificationType::reference_type( | |
| 2460 | 2014 vmSymbols::java_lang_invoke_MethodType()), CHECK_VERIFY(this)); |
| 0 | 2015 } else { |
| 6605 | 2016 /* Unreachable? verify_cp_type has already validated the cp type. */ |
| 2017 verify_error( | |
| 2018 ErrorContext::bad_cp_index(bci, index), "Invalid index in ldc"); | |
| 0 | 2019 return; |
| 2020 } | |
| 2021 } | |
| 2022 | |
| 2023 void ClassVerifier::verify_switch( | |
| 2024 RawBytecodeStream* bcs, u4 code_length, char* code_data, | |
| 2025 StackMapFrame* current_frame, StackMapTable* stackmap_table, TRAPS) { | |
| 2026 int bci = bcs->bci(); | |
| 2027 address bcp = bcs->bcp(); | |
| 2028 address aligned_bcp = (address) round_to((intptr_t)(bcp + 1), jintSize); | |
| 2029 | |
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2030 if (_klass->major_version() < NONZERO_PADDING_BYTES_IN_SWITCH_MAJOR_VERSION) { |
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2031 // 4639449 & 4647081: padding bytes must be 0 |
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2032 u2 padding_offset = 1; |
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2033 while ((bcp + padding_offset) < aligned_bcp) { |
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2034 if(*(bcp + padding_offset) != 0) { |
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2035 verify_error(ErrorContext::bad_code(bci), |
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2036 "Nonzero padding byte in lookswitch or tableswitch"); |
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2037 return; |
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2038 } |
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2039 padding_offset++; |
| 0 | 2040 } |
| 2041 } | |
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2042 |
| 0 | 2043 int default_offset = (int) Bytes::get_Java_u4(aligned_bcp); |
| 2044 int keys, delta; | |
| 2045 current_frame->pop_stack( | |
| 2046 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1565 | 2047 if (bcs->raw_code() == Bytecodes::_tableswitch) { |
| 0 | 2048 jint low = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize); |
| 2049 jint high = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize); | |
| 2050 if (low > high) { | |
| 6605 | 2051 verify_error(ErrorContext::bad_code(bci), |
| 2052 "low must be less than or equal to high in tableswitch"); | |
| 0 | 2053 return; |
| 2054 } | |
| 2055 keys = high - low + 1; | |
| 2056 if (keys < 0) { | |
| 6605 | 2057 verify_error(ErrorContext::bad_code(bci), "too many keys in tableswitch"); |
| 0 | 2058 return; |
| 2059 } | |
| 2060 delta = 1; | |
| 2061 } else { | |
| 2062 keys = (int)Bytes::get_Java_u4(aligned_bcp + jintSize); | |
| 2063 if (keys < 0) { | |
| 6605 | 2064 verify_error(ErrorContext::bad_code(bci), |
| 2065 "number of keys in lookupswitch less than 0"); | |
| 0 | 2066 return; |
| 2067 } | |
| 2068 delta = 2; | |
| 2069 // Make sure that the lookupswitch items are sorted | |
| 2070 for (int i = 0; i < (keys - 1); i++) { | |
| 2071 jint this_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i)*jintSize); | |
| 2072 jint next_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i+2)*jintSize); | |
| 2073 if (this_key >= next_key) { | |
| 6605 | 2074 verify_error(ErrorContext::bad_code(bci), |
| 2075 "Bad lookupswitch instruction"); | |
| 0 | 2076 return; |
| 2077 } | |
| 2078 } | |
| 2079 } | |
| 2080 int target = bci + default_offset; | |
| 2081 stackmap_table->check_jump_target(current_frame, target, CHECK_VERIFY(this)); | |
| 2082 for (int i = 0; i < keys; i++) { | |
| 6118 | 2083 // Because check_jump_target() may safepoint, the bytecode could have |
| 2084 // moved, which means 'aligned_bcp' is no good and needs to be recalculated. | |
| 2085 aligned_bcp = (address)round_to((intptr_t)(bcs->bcp() + 1), jintSize); | |
| 0 | 2086 target = bci + (jint)Bytes::get_Java_u4(aligned_bcp+(3+i*delta)*jintSize); |
| 2087 stackmap_table->check_jump_target( | |
| 2088 current_frame, target, CHECK_VERIFY(this)); | |
| 2089 } | |
| 6118 | 2090 NOT_PRODUCT(aligned_bcp = NULL); // no longer valid at this point |
| 0 | 2091 } |
| 2092 | |
| 2093 bool ClassVerifier::name_in_supers( | |
|
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2094 Symbol* ref_name, instanceKlassHandle current) { |
|
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2095 Klass* super = current->super(); |
| 0 | 2096 while (super != NULL) { |
|
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2097 if (super->name() == ref_name) { |
| 0 | 2098 return true; |
| 2099 } | |
|
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|
2100 super = super->super(); |
| 0 | 2101 } |
| 2102 return false; | |
| 2103 } | |
| 2104 | |
| 2105 void ClassVerifier::verify_field_instructions(RawBytecodeStream* bcs, | |
| 2106 StackMapFrame* current_frame, | |
| 2107 constantPoolHandle cp, | |
| 2108 TRAPS) { | |
| 1565 | 2109 u2 index = bcs->get_index_u2(); |
| 6605 | 2110 verify_cp_type(bcs->bci(), index, cp, |
| 2111 1 << JVM_CONSTANT_Fieldref, CHECK_VERIFY(this)); | |
| 0 | 2112 |
| 2113 // Get field name and signature | |
|
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|
2114 Symbol* field_name = cp->name_ref_at(index); |
|
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|
2115 Symbol* field_sig = cp->signature_ref_at(index); |
| 0 | 2116 |
| 2117 if (!SignatureVerifier::is_valid_type_signature(field_sig)) { | |
| 2118 class_format_error( | |
| 2119 "Invalid signature for field in class %s referenced " | |
| 2120 "from constant pool index %d", _klass->external_name(), index); | |
| 2121 return; | |
| 2122 } | |
| 2123 | |
| 2124 // Get referenced class type | |
| 2125 VerificationType ref_class_type = cp_ref_index_to_type( | |
| 2126 index, cp, CHECK_VERIFY(this)); | |
| 2127 if (!ref_class_type.is_object()) { | |
| 6605 | 2128 /* Unreachable? Class file parser verifies Fieldref contents */ |
| 2129 verify_error(ErrorContext::bad_type(bcs->bci(), | |
| 2130 TypeOrigin::cp(index, ref_class_type)), | |
| 2131 "Expecting reference to class in class %s at constant pool index %d", | |
| 2132 _klass->external_name(), index); | |
| 0 | 2133 return; |
| 2134 } | |
| 2135 VerificationType target_class_type = ref_class_type; | |
| 2136 | |
| 2137 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
| 2138 "buffer type must match VerificationType size"); | |
| 2139 uintptr_t field_type_buffer[2]; | |
| 2140 VerificationType* field_type = (VerificationType*)field_type_buffer; | |
| 2141 // If we make a VerificationType[2] array directly, the compiler calls | |
| 2142 // to the c-runtime library to do the allocation instead of just | |
| 2143 // stack allocating it. Plus it would run constructors. This shows up | |
| 2144 // in performance profiles. | |
| 2145 | |
| 2146 SignatureStream sig_stream(field_sig, false); | |
| 2147 VerificationType stack_object_type; | |
| 2148 int n = change_sig_to_verificationType( | |
| 2149 &sig_stream, field_type, CHECK_VERIFY(this)); | |
| 2150 u2 bci = bcs->bci(); | |
| 2151 bool is_assignable; | |
| 1565 | 2152 switch (bcs->raw_code()) { |
| 0 | 2153 case Bytecodes::_getstatic: { |
| 2154 for (int i = 0; i < n; i++) { | |
| 2155 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2156 } | |
| 2157 break; | |
| 2158 } | |
| 2159 case Bytecodes::_putstatic: { | |
| 2160 for (int i = n - 1; i >= 0; i--) { | |
| 2161 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2162 } | |
| 2163 break; | |
| 2164 } | |
| 2165 case Bytecodes::_getfield: { | |
| 2166 stack_object_type = current_frame->pop_stack( | |
| 2167 target_class_type, CHECK_VERIFY(this)); | |
| 2168 for (int i = 0; i < n; i++) { | |
| 2169 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2170 } | |
| 2171 goto check_protected; | |
| 2172 } | |
| 2173 case Bytecodes::_putfield: { | |
| 2174 for (int i = n - 1; i >= 0; i--) { | |
| 2175 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2176 } | |
| 2177 stack_object_type = current_frame->pop_stack(CHECK_VERIFY(this)); | |
| 2178 | |
| 2179 // The JVMS 2nd edition allows field initialization before the superclass | |
| 2180 // initializer, if the field is defined within the current class. | |
| 2181 fieldDescriptor fd; | |
| 2182 if (stack_object_type == VerificationType::uninitialized_this_type() && | |
| 2183 target_class_type.equals(current_type()) && | |
|
2177
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diff
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|
2184 _klass->find_local_field(field_name, field_sig, &fd)) { |
| 0 | 2185 stack_object_type = current_type(); |
| 2186 } | |
| 2187 is_assignable = target_class_type.is_assignable_from( | |
|
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diff
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|
2188 stack_object_type, this, CHECK_VERIFY(this)); |
| 0 | 2189 if (!is_assignable) { |
| 6605 | 2190 verify_error(ErrorContext::bad_type(bci, |
| 2191 current_frame->stack_top_ctx(), | |
| 2192 TypeOrigin::cp(index, target_class_type)), | |
| 2193 "Bad type on operand stack in putfield"); | |
| 0 | 2194 return; |
| 2195 } | |
| 2196 } | |
| 2197 check_protected: { | |
| 2198 if (_this_type == stack_object_type) | |
| 2199 break; // stack_object_type must be assignable to _current_class_type | |
|
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|
2200 Symbol* ref_class_name = |
|
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diff
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|
2201 cp->klass_name_at(cp->klass_ref_index_at(index)); |
|
3582bf76420e
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diff
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|
2202 if (!name_in_supers(ref_class_name, current_class())) |
| 0 | 2203 // stack_object_type must be assignable to _current_class_type since: |
| 2204 // 1. stack_object_type must be assignable to ref_class. | |
| 2205 // 2. ref_class must be _current_class or a subclass of it. It can't | |
| 2206 // be a superclass of it. See revised JVMS 5.4.4. | |
| 2207 break; | |
| 2208 | |
|
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|
2209 Klass* ref_class_oop = load_class(ref_class_name, CHECK); |
|
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diff
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|
2210 if (is_protected_access(current_class(), ref_class_oop, field_name, |
|
3582bf76420e
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|
2211 field_sig, false)) { |
| 0 | 2212 // It's protected access, check if stack object is assignable to |
| 2213 // current class. | |
| 2214 is_assignable = current_type().is_assignable_from( | |
|
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|
2215 stack_object_type, this, CHECK_VERIFY(this)); |
| 0 | 2216 if (!is_assignable) { |
| 6605 | 2217 verify_error(ErrorContext::bad_type(bci, |
| 2218 current_frame->stack_top_ctx(), | |
| 2219 TypeOrigin::implicit(current_type())), | |
| 2220 "Bad access to protected data in getfield"); | |
| 0 | 2221 return; |
| 2222 } | |
| 2223 } | |
| 2224 break; | |
| 2225 } | |
| 2226 default: ShouldNotReachHere(); | |
| 2227 } | |
| 2228 } | |
| 2229 | |
| 2230 void ClassVerifier::verify_invoke_init( | |
| 6605 | 2231 RawBytecodeStream* bcs, u2 ref_class_index, VerificationType ref_class_type, |
| 0 | 2232 StackMapFrame* current_frame, u4 code_length, bool *this_uninit, |
| 2233 constantPoolHandle cp, TRAPS) { | |
| 2234 u2 bci = bcs->bci(); | |
| 2235 VerificationType type = current_frame->pop_stack( | |
| 2236 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2237 if (type == VerificationType::uninitialized_this_type()) { | |
| 6155 | 2238 // The method must be an <init> method of this class or its superclass |
|
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2239 Klass* superk = current_class()->super(); |
| 1677 | 2240 if (ref_class_type.name() != current_class()->name() && |
|
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2241 ref_class_type.name() != superk->name()) { |
| 6605 | 2242 verify_error(ErrorContext::bad_type(bci, |
| 2243 TypeOrigin::implicit(ref_class_type), | |
| 2244 TypeOrigin::implicit(current_type())), | |
| 2245 "Bad <init> method call"); | |
| 0 | 2246 return; |
| 2247 } | |
| 2248 current_frame->initialize_object(type, current_type()); | |
| 2249 *this_uninit = true; | |
| 2250 } else if (type.is_uninitialized()) { | |
| 2251 u2 new_offset = type.bci(); | |
| 2252 address new_bcp = bcs->bcp() - bci + new_offset; | |
| 2253 if (new_offset > (code_length - 3) || (*new_bcp) != Bytecodes::_new) { | |
| 6605 | 2254 /* Unreachable? Stack map parsing ensures valid type and new |
| 2255 * instructions have a valid BCI. */ | |
| 2256 verify_error(ErrorContext::bad_code(new_offset), | |
| 2257 "Expecting new instruction"); | |
| 0 | 2258 return; |
| 2259 } | |
| 2260 u2 new_class_index = Bytes::get_Java_u2(new_bcp + 1); | |
| 6605 | 2261 verify_cp_class_type(bci, new_class_index, cp, CHECK_VERIFY(this)); |
| 0 | 2262 |
| 2263 // The method must be an <init> method of the indicated class | |
| 2264 VerificationType new_class_type = cp_index_to_type( | |
| 2265 new_class_index, cp, CHECK_VERIFY(this)); | |
| 2266 if (!new_class_type.equals(ref_class_type)) { | |
| 6605 | 2267 verify_error(ErrorContext::bad_type(bci, |
| 2268 TypeOrigin::cp(new_class_index, new_class_type), | |
| 2269 TypeOrigin::cp(ref_class_index, ref_class_type)), | |
| 2270 "Call to wrong <init> method"); | |
| 0 | 2271 return; |
| 2272 } | |
| 2273 // According to the VM spec, if the referent class is a superclass of the | |
| 2274 // current class, and is in a different runtime package, and the method is | |
| 2275 // protected, then the objectref must be the current class or a subclass | |
| 2276 // of the current class. | |
| 2277 VerificationType objectref_type = new_class_type; | |
| 2278 if (name_in_supers(ref_class_type.name(), current_class())) { | |
|
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2279 Klass* ref_klass = load_class( |
| 0 | 2280 ref_class_type.name(), CHECK_VERIFY(this)); |
|
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2281 Method* m = InstanceKlass::cast(ref_klass)->uncached_lookup_method( |
| 0 | 2282 vmSymbols::object_initializer_name(), |
| 1565 | 2283 cp->signature_ref_at(bcs->get_index_u2())); |
| 0 | 2284 instanceKlassHandle mh(THREAD, m->method_holder()); |
| 2285 if (m->is_protected() && !mh->is_same_class_package(_klass())) { | |
| 2286 bool assignable = current_type().is_assignable_from( | |
|
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|
2287 objectref_type, this, CHECK_VERIFY(this)); |
| 0 | 2288 if (!assignable) { |
| 6605 | 2289 verify_error(ErrorContext::bad_type(bci, |
| 2290 TypeOrigin::cp(new_class_index, objectref_type), | |
| 2291 TypeOrigin::implicit(current_type())), | |
| 2292 "Bad access to protected <init> method"); | |
| 0 | 2293 return; |
| 2294 } | |
| 2295 } | |
| 2296 } | |
| 2297 current_frame->initialize_object(type, new_class_type); | |
| 2298 } else { | |
| 6605 | 2299 verify_error(ErrorContext::bad_type(bci, current_frame->stack_top_ctx()), |
| 2300 "Bad operand type when invoking <init>"); | |
| 0 | 2301 return; |
| 2302 } | |
| 2303 } | |
| 2304 | |
| 2305 void ClassVerifier::verify_invoke_instructions( | |
| 2306 RawBytecodeStream* bcs, u4 code_length, StackMapFrame* current_frame, | |
| 2307 bool *this_uninit, VerificationType return_type, | |
| 2308 constantPoolHandle cp, TRAPS) { | |
| 2309 // Make sure the constant pool item is the right type | |
| 1565 | 2310 u2 index = bcs->get_index_u2(); |
| 2311 Bytecodes::Code opcode = bcs->raw_code(); | |
| 6934 | 2312 unsigned int types; |
| 2313 switch (opcode) { | |
| 2314 case Bytecodes::_invokeinterface: | |
| 2315 types = 1 << JVM_CONSTANT_InterfaceMethodref; | |
| 2316 break; | |
| 2317 case Bytecodes::_invokedynamic: | |
| 2318 types = 1 << JVM_CONSTANT_InvokeDynamic; | |
| 2319 break; | |
| 2320 case Bytecodes::_invokespecial: | |
| 2321 types = (1 << JVM_CONSTANT_InterfaceMethodref) | | |
| 2322 (1 << JVM_CONSTANT_Methodref); | |
| 2323 break; | |
|
9066
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|
2324 case Bytecodes::_invokestatic: |
|
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changeset
|
2325 types = (_klass->major_version() < STATIC_METHOD_IN_INTERFACE_MAJOR_VERSION) ? |
|
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|
2326 (1 << JVM_CONSTANT_Methodref) : |
|
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8011671: JCK tests on static interface methods fail under b84: Illegal type at constant pool entry 5
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diff
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|
2327 ((1 << JVM_CONSTANT_InterfaceMethodref) | (1 << JVM_CONSTANT_Methodref)); |
|
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|
2328 break; |
| 6934 | 2329 default: |
| 2330 types = 1 << JVM_CONSTANT_Methodref; | |
| 2331 } | |
| 6605 | 2332 verify_cp_type(bcs->bci(), index, cp, types, CHECK_VERIFY(this)); |
| 0 | 2333 |
| 2334 // Get method name and signature | |
|
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|
2335 Symbol* method_name = cp->name_ref_at(index); |
|
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|
2336 Symbol* method_sig = cp->signature_ref_at(index); |
| 0 | 2337 |
| 2338 if (!SignatureVerifier::is_valid_method_signature(method_sig)) { | |
| 2339 class_format_error( | |
| 2340 "Invalid method signature in class %s referenced " | |
| 2341 "from constant pool index %d", _klass->external_name(), index); | |
| 2342 return; | |
| 2343 } | |
| 2344 | |
| 2345 // Get referenced class type | |
|
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diff
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|
2346 VerificationType ref_class_type; |
|
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|
2347 if (opcode == Bytecodes::_invokedynamic) { |
| 1602 | 2348 if (!EnableInvokeDynamic || |
| 2349 _klass->major_version() < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { | |
|
726
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diff
changeset
|
2350 class_format_error( |
| 1602 | 2351 (!EnableInvokeDynamic ? |
| 2352 "invokedynamic instructions not enabled in this JVM" : | |
| 2353 "invokedynamic instructions not supported by this class file version"), | |
|
726
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diff
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|
2354 _klass->external_name()); |
|
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6655646: dynamic languages need dynamically linked call sites
jrose
parents:
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diff
changeset
|
2355 return; |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2356 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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parents:
431
diff
changeset
|
2357 } else { |
|
be93aad57795
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diff
changeset
|
2358 ref_class_type = cp_ref_index_to_type(index, cp, CHECK_VERIFY(this)); |
|
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diff
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|
2359 } |
| 0 | 2360 |
| 2361 // For a small signature length, we just allocate 128 bytes instead | |
| 2362 // of parsing the signature once to find its size. | |
| 2363 // -3 is for '(', ')' and return descriptor; multiply by 2 is for | |
| 2364 // longs/doubles to be consertive. | |
| 2365 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
| 2366 "buffer type must match VerificationType size"); | |
| 2367 uintptr_t on_stack_sig_types_buffer[128]; | |
| 2368 // If we make a VerificationType[128] array directly, the compiler calls | |
| 2369 // to the c-runtime library to do the allocation instead of just | |
| 2370 // stack allocating it. Plus it would run constructors. This shows up | |
| 2371 // in performance profiles. | |
| 2372 | |
| 2373 VerificationType* sig_types; | |
| 2374 int size = (method_sig->utf8_length() - 3) * 2; | |
| 2375 if (size > 128) { | |
| 2376 // Long and double occupies two slots here. | |
| 2377 ArgumentSizeComputer size_it(method_sig); | |
| 2378 size = size_it.size(); | |
| 2379 sig_types = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, VerificationType, size); | |
| 2380 } else{ | |
| 2381 sig_types = (VerificationType*)on_stack_sig_types_buffer; | |
| 2382 } | |
| 2383 SignatureStream sig_stream(method_sig); | |
| 2384 int sig_i = 0; | |
| 2385 while (!sig_stream.at_return_type()) { | |
| 2386 sig_i += change_sig_to_verificationType( | |
| 2387 &sig_stream, &sig_types[sig_i], CHECK_VERIFY(this)); | |
| 2388 sig_stream.next(); | |
| 2389 } | |
| 2390 int nargs = sig_i; | |
| 2391 | |
| 2392 #ifdef ASSERT | |
| 2393 { | |
| 2394 ArgumentSizeComputer size_it(method_sig); | |
| 2395 assert(nargs == size_it.size(), "Argument sizes do not match"); | |
| 2396 assert(nargs <= (method_sig->utf8_length() - 3) * 2, "estimate of max size isn't conservative enough"); | |
| 2397 } | |
| 2398 #endif | |
| 2399 | |
| 2400 // Check instruction operands | |
| 2401 u2 bci = bcs->bci(); | |
| 2402 if (opcode == Bytecodes::_invokeinterface) { | |
| 2403 address bcp = bcs->bcp(); | |
| 2404 // 4905268: count operand in invokeinterface should be nargs+1, not nargs. | |
| 2405 // JSR202 spec: The count operand of an invokeinterface instruction is valid if it is | |
| 2406 // the difference between the size of the operand stack before and after the instruction | |
| 2407 // executes. | |
| 2408 if (*(bcp+3) != (nargs+1)) { | |
| 6605 | 2409 verify_error(ErrorContext::bad_code(bci), |
| 2410 "Inconsistent args count operand in invokeinterface"); | |
| 0 | 2411 return; |
| 2412 } | |
| 2413 if (*(bcp+4) != 0) { | |
| 6605 | 2414 verify_error(ErrorContext::bad_code(bci), |
| 2415 "Fourth operand byte of invokeinterface must be zero"); | |
| 0 | 2416 return; |
| 2417 } | |
| 2418 } | |
| 2419 | |
|
726
be93aad57795
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jrose
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431
diff
changeset
|
2420 if (opcode == Bytecodes::_invokedynamic) { |
|
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diff
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|
2421 address bcp = bcs->bcp(); |
|
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431
diff
changeset
|
2422 if (*(bcp+3) != 0 || *(bcp+4) != 0) { |
| 6605 | 2423 verify_error(ErrorContext::bad_code(bci), |
| 2424 "Third and fourth operand bytes of invokedynamic must be zero"); | |
|
726
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6655646: dynamic languages need dynamically linked call sites
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parents:
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diff
changeset
|
2425 return; |
|
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6655646: dynamic languages need dynamically linked call sites
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parents:
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diff
changeset
|
2426 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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parents:
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diff
changeset
|
2427 } |
|
be93aad57795
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diff
changeset
|
2428 |
| 0 | 2429 if (method_name->byte_at(0) == '<') { |
| 2430 // Make sure <init> can only be invoked by invokespecial | |
| 2431 if (opcode != Bytecodes::_invokespecial || | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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parents:
1980
diff
changeset
|
2432 method_name != vmSymbols::object_initializer_name()) { |
| 6605 | 2433 verify_error(ErrorContext::bad_code(bci), |
| 2434 "Illegal call to internal method"); | |
| 0 | 2435 return; |
| 2436 } | |
| 2437 } else if (opcode == Bytecodes::_invokespecial | |
| 2438 && !ref_class_type.equals(current_type()) | |
| 2439 && !ref_class_type.equals(VerificationType::reference_type( | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6608
diff
changeset
|
2440 current_class()->super()->name()))) { |
| 0 | 2441 bool subtype = ref_class_type.is_assignable_from( |
|
2177
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coleenp
parents:
1980
diff
changeset
|
2442 current_type(), this, CHECK_VERIFY(this)); |
| 0 | 2443 if (!subtype) { |
| 6605 | 2444 verify_error(ErrorContext::bad_code(bci), |
| 2445 "Bad invokespecial instruction: " | |
| 0 | 2446 "current class isn't assignable to reference class."); |
| 2447 return; | |
| 2448 } | |
| 2449 } | |
| 2450 // Match method descriptor with operand stack | |
| 2451 for (int i = nargs - 1; i >= 0; i--) { // Run backwards | |
| 2452 current_frame->pop_stack(sig_types[i], CHECK_VERIFY(this)); | |
| 2453 } | |
| 2454 // Check objectref on operand stack | |
|
726
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6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2455 if (opcode != Bytecodes::_invokestatic && |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2456 opcode != Bytecodes::_invokedynamic) { |
|
2177
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coleenp
parents:
1980
diff
changeset
|
2457 if (method_name == vmSymbols::object_initializer_name()) { // <init> method |
| 6605 | 2458 verify_invoke_init(bcs, index, ref_class_type, current_frame, |
| 0 | 2459 code_length, this_uninit, cp, CHECK_VERIFY(this)); |
| 2460 } else { // other methods | |
| 2461 // Ensures that target class is assignable to method class. | |
| 2462 if (opcode == Bytecodes::_invokespecial) { | |
| 2463 current_frame->pop_stack(current_type(), CHECK_VERIFY(this)); | |
| 2464 } else if (opcode == Bytecodes::_invokevirtual) { | |
| 2465 VerificationType stack_object_type = | |
| 2466 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
| 2467 if (current_type() != stack_object_type) { | |
| 2468 assert(cp->cache() == NULL, "not rewritten yet"); | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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1980
diff
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|
2469 Symbol* ref_class_name = |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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1980
diff
changeset
|
2470 cp->klass_name_at(cp->klass_ref_index_at(index)); |
| 0 | 2471 // See the comments in verify_field_instructions() for |
| 2472 // the rationale behind this. | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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1980
diff
changeset
|
2473 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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6608
diff
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|
2474 Klass* ref_class = load_class(ref_class_name, CHECK); |
| 0 | 2475 if (is_protected_access( |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2476 _klass, ref_class, method_name, method_sig, true)) { |
| 0 | 2477 // It's protected access, check if stack object is |
| 2478 // assignable to current class. | |
| 2479 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
|
2480 stack_object_type, this, CHECK_VERIFY(this)); |
| 0 | 2481 if (!is_assignable) { |
| 2482 if (ref_class_type.name() == vmSymbols::java_lang_Object() | |
| 2483 && 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
|
2484 && method_name == vmSymbols::clone_name()) { |
| 0 | 2485 // Special case: arrays pretend to implement public Object |
| 2486 // clone(). | |
| 2487 } else { | |
| 6605 | 2488 verify_error(ErrorContext::bad_type(bci, |
| 2489 current_frame->stack_top_ctx(), | |
| 2490 TypeOrigin::implicit(current_type())), | |
| 2491 "Bad access to protected data in invokevirtual"); | |
| 0 | 2492 return; |
| 2493 } | |
| 2494 } | |
| 2495 } | |
| 2496 } | |
| 2497 } | |
| 2498 } else { | |
| 2499 assert(opcode == Bytecodes::_invokeinterface, "Unexpected opcode encountered"); | |
| 2500 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
| 2501 } | |
| 2502 } | |
| 2503 } | |
| 2504 // Push the result type. | |
| 2505 if (sig_stream.type() != T_VOID) { | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2506 if (method_name == vmSymbols::object_initializer_name()) { |
| 0 | 2507 // <init> method must have a void return type |
| 6605 | 2508 /* Unreachable? Class file parser verifies that methods with '<' have |
| 2509 * void return */ | |
| 2510 verify_error(ErrorContext::bad_code(bci), | |
| 2511 "Return type must be void in <init> method"); | |
| 0 | 2512 return; |
| 2513 } | |
| 2514 VerificationType return_type[2]; | |
| 2515 int n = change_sig_to_verificationType( | |
| 2516 &sig_stream, return_type, CHECK_VERIFY(this)); | |
| 2517 for (int i = 0; i < n; i++) { | |
| 2518 current_frame->push_stack(return_type[i], CHECK_VERIFY(this)); // push types backwards | |
| 2519 } | |
| 2520 } | |
| 2521 } | |
| 2522 | |
| 2523 VerificationType ClassVerifier::get_newarray_type( | |
| 2524 u2 index, u2 bci, TRAPS) { | |
| 2525 const char* from_bt[] = { | |
| 2526 NULL, NULL, NULL, NULL, "[Z", "[C", "[F", "[D", "[B", "[S", "[I", "[J", | |
| 2527 }; | |
| 2528 if (index < T_BOOLEAN || index > T_LONG) { | |
| 6605 | 2529 verify_error(ErrorContext::bad_code(bci), "Illegal newarray instruction"); |
| 0 | 2530 return VerificationType::bogus_type(); |
| 2531 } | |
| 2532 | |
| 2533 // 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
|
2534 Symbol* sig = create_temporary_symbol( |
| 0 | 2535 from_bt[index], 2, CHECK_(VerificationType::bogus_type())); |
| 2536 return VerificationType::reference_type(sig); | |
| 2537 } | |
| 2538 | |
| 2539 void ClassVerifier::verify_anewarray( | |
| 6605 | 2540 u2 bci, u2 index, constantPoolHandle cp, |
| 2541 StackMapFrame* current_frame, TRAPS) { | |
| 2542 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); | |
| 0 | 2543 current_frame->pop_stack( |
| 2544 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2545 | |
| 2546 VerificationType component_type = | |
| 2547 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 2548 int length; | |
| 2549 char* arr_sig_str; | |
| 2550 if (component_type.is_array()) { // it's an array | |
| 2551 const char* component_name = component_type.name()->as_utf8(); | |
| 2552 // add one dimension to component | |
| 2553 length = (int)strlen(component_name) + 1; | |
| 2554 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
| 2555 arr_sig_str[0] = '['; | |
| 2556 strncpy(&arr_sig_str[1], component_name, length - 1); | |
| 2557 } else { // it's an object or interface | |
| 2558 const char* component_name = component_type.name()->as_utf8(); | |
| 2559 // add one dimension to component with 'L' prepended and ';' postpended. | |
| 2560 length = (int)strlen(component_name) + 3; | |
| 2561 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
| 2562 arr_sig_str[0] = '['; | |
| 2563 arr_sig_str[1] = 'L'; | |
| 2564 strncpy(&arr_sig_str[2], component_name, length - 2); | |
| 2565 arr_sig_str[length - 1] = ';'; | |
| 2566 } | |
|
2177
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coleenp
parents:
1980
diff
changeset
|
2567 Symbol* arr_sig = create_temporary_symbol( |
| 0 | 2568 arr_sig_str, length, CHECK_VERIFY(this)); |
| 2569 VerificationType new_array_type = VerificationType::reference_type(arr_sig); | |
| 2570 current_frame->push_stack(new_array_type, CHECK_VERIFY(this)); | |
| 2571 } | |
| 2572 | |
| 2573 void ClassVerifier::verify_iload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2574 current_frame->get_local( | |
| 2575 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2576 current_frame->push_stack( | |
| 2577 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2578 } | |
| 2579 | |
| 2580 void ClassVerifier::verify_lload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2581 current_frame->get_local_2( | |
| 2582 index, VerificationType::long_type(), | |
| 2583 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2584 current_frame->push_stack_2( | |
| 2585 VerificationType::long_type(), | |
| 2586 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2587 } | |
| 2588 | |
| 2589 void ClassVerifier::verify_fload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2590 current_frame->get_local( | |
| 2591 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2592 current_frame->push_stack( | |
| 2593 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2594 } | |
| 2595 | |
| 2596 void ClassVerifier::verify_dload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2597 current_frame->get_local_2( | |
| 2598 index, VerificationType::double_type(), | |
| 2599 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2600 current_frame->push_stack_2( | |
| 2601 VerificationType::double_type(), | |
| 2602 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2603 } | |
| 2604 | |
| 2605 void ClassVerifier::verify_aload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2606 VerificationType type = current_frame->get_local( | |
| 2607 index, VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2608 current_frame->push_stack(type, CHECK_VERIFY(this)); | |
| 2609 } | |
| 2610 | |
| 2611 void ClassVerifier::verify_istore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2612 current_frame->pop_stack( | |
| 2613 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2614 current_frame->set_local( | |
| 2615 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2616 } | |
| 2617 | |
| 2618 void ClassVerifier::verify_lstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2619 current_frame->pop_stack_2( | |
| 2620 VerificationType::long2_type(), | |
| 2621 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 2622 current_frame->set_local_2( | |
| 2623 index, VerificationType::long_type(), | |
| 2624 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2625 } | |
| 2626 | |
| 2627 void ClassVerifier::verify_fstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2628 current_frame->pop_stack(VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2629 current_frame->set_local( | |
| 2630 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2631 } | |
| 2632 | |
| 2633 void ClassVerifier::verify_dstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2634 current_frame->pop_stack_2( | |
| 2635 VerificationType::double2_type(), | |
| 2636 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 2637 current_frame->set_local_2( | |
| 2638 index, VerificationType::double_type(), | |
| 2639 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2640 } | |
| 2641 | |
| 2642 void ClassVerifier::verify_astore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2643 VerificationType type = current_frame->pop_stack( | |
| 2644 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2645 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
| 2646 } | |
| 2647 | |
| 2648 void ClassVerifier::verify_iinc(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2649 VerificationType type = current_frame->get_local( | |
| 2650 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2651 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
| 2652 } | |
| 2653 | |
| 2654 void ClassVerifier::verify_return_value( | |
| 6605 | 2655 VerificationType return_type, VerificationType type, u2 bci, |
| 2656 StackMapFrame* current_frame, TRAPS) { | |
| 0 | 2657 if (return_type == VerificationType::bogus_type()) { |
| 6605 | 2658 verify_error(ErrorContext::bad_type(bci, |
| 2659 current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), | |
| 2660 "Method expects a return value"); | |
| 0 | 2661 return; |
| 2662 } | |
|
2177
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2663 bool match = return_type.is_assignable_from(type, this, CHECK_VERIFY(this)); |
| 0 | 2664 if (!match) { |
| 6605 | 2665 verify_error(ErrorContext::bad_type(bci, |
| 2666 current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), | |
| 2667 "Bad return type"); | |
| 0 | 2668 return; |
| 2669 } | |
| 2670 } | |
|
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2671 |
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2672 // The verifier creates symbols which are substrings of Symbols. |
|
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2673 // These are stored in the verifier until the end of verification so that |
|
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2674 // they can be reference counted. |
|
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2675 Symbol* ClassVerifier::create_temporary_symbol(const Symbol *s, int begin, |
|
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2676 int end, TRAPS) { |
|
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2677 Symbol* sym = SymbolTable::new_symbol(s, begin, end, CHECK_NULL); |
|
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2678 _symbols->push(sym); |
|
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2679 return sym; |
|
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|
2680 } |
|
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|
2681 |
|
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|
2682 Symbol* ClassVerifier::create_temporary_symbol(const char *s, int length, TRAPS) { |
|
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|
2683 Symbol* sym = SymbolTable::new_symbol(s, length, CHECK_NULL); |
|
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|
2684 _symbols->push(sym); |
|
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|
2685 return sym; |
|
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|
2686 } |