Wed, 03 Jul 2019 20:42:37 +0800
Merge
aoqi@0 | 1 | /* |
coleenp@9530 | 2 | * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@1 | 25 | /* |
aoqi@1 | 26 | * This file has been modified by Loongson Technology in 2015. These |
aoqi@1 | 27 | * modifications are Copyright (c) 2015 Loongson Technology, and are made |
aoqi@1 | 28 | * available on the same license terms set forth above. |
aoqi@1 | 29 | */ |
aoqi@1 | 30 | |
aoqi@0 | 31 | #include "precompiled.hpp" |
aoqi@0 | 32 | #include "classfile/classFileStream.hpp" |
aoqi@0 | 33 | #include "classfile/javaClasses.hpp" |
aoqi@0 | 34 | #include "classfile/stackMapTable.hpp" |
aoqi@0 | 35 | #include "classfile/stackMapFrame.hpp" |
aoqi@0 | 36 | #include "classfile/stackMapTableFormat.hpp" |
aoqi@0 | 37 | #include "classfile/systemDictionary.hpp" |
aoqi@0 | 38 | #include "classfile/verifier.hpp" |
aoqi@0 | 39 | #include "classfile/vmSymbols.hpp" |
aoqi@0 | 40 | #include "interpreter/bytecodes.hpp" |
aoqi@0 | 41 | #include "interpreter/bytecodeStream.hpp" |
aoqi@0 | 42 | #include "memory/oopFactory.hpp" |
aoqi@0 | 43 | #include "memory/resourceArea.hpp" |
aoqi@0 | 44 | #include "oops/instanceKlass.hpp" |
aoqi@0 | 45 | #include "oops/oop.inline.hpp" |
aoqi@0 | 46 | #include "oops/typeArrayOop.hpp" |
aoqi@0 | 47 | #include "prims/jvm.h" |
aoqi@0 | 48 | #include "runtime/fieldDescriptor.hpp" |
aoqi@0 | 49 | #include "runtime/handles.inline.hpp" |
aoqi@0 | 50 | #include "runtime/interfaceSupport.hpp" |
aoqi@0 | 51 | #include "runtime/javaCalls.hpp" |
goetz@6911 | 52 | #include "runtime/orderAccess.inline.hpp" |
aoqi@0 | 53 | #include "runtime/os.hpp" |
aoqi@0 | 54 | #ifdef TARGET_ARCH_x86 |
aoqi@0 | 55 | # include "bytes_x86.hpp" |
aoqi@0 | 56 | #endif |
aoqi@1 | 57 | #ifdef TARGET_ARCH_mips |
aoqi@1 | 58 | # include "bytes_mips.hpp" |
aoqi@1 | 59 | #endif |
aoqi@0 | 60 | #ifdef TARGET_ARCH_sparc |
aoqi@0 | 61 | # include "bytes_sparc.hpp" |
aoqi@0 | 62 | #endif |
aoqi@0 | 63 | #ifdef TARGET_ARCH_zero |
aoqi@0 | 64 | # include "bytes_zero.hpp" |
aoqi@0 | 65 | #endif |
aoqi@0 | 66 | #ifdef TARGET_ARCH_arm |
aoqi@0 | 67 | # include "bytes_arm.hpp" |
aoqi@0 | 68 | #endif |
aoqi@0 | 69 | #ifdef TARGET_ARCH_ppc |
aoqi@0 | 70 | # include "bytes_ppc.hpp" |
aoqi@0 | 71 | #endif |
aoqi@0 | 72 | |
aoqi@0 | 73 | #define NOFAILOVER_MAJOR_VERSION 51 |
aoqi@0 | 74 | #define NONZERO_PADDING_BYTES_IN_SWITCH_MAJOR_VERSION 51 |
aoqi@0 | 75 | #define STATIC_METHOD_IN_INTERFACE_MAJOR_VERSION 52 |
aoqi@0 | 76 | |
aoqi@0 | 77 | // Access to external entry for VerifyClassCodes - old byte code verifier |
aoqi@0 | 78 | |
aoqi@0 | 79 | extern "C" { |
aoqi@0 | 80 | typedef jboolean (*verify_byte_codes_fn_t)(JNIEnv *, jclass, char *, jint); |
aoqi@0 | 81 | typedef jboolean (*verify_byte_codes_fn_new_t)(JNIEnv *, jclass, char *, jint, jint); |
aoqi@0 | 82 | } |
aoqi@0 | 83 | |
aoqi@0 | 84 | static void* volatile _verify_byte_codes_fn = NULL; |
aoqi@0 | 85 | |
aoqi@0 | 86 | static volatile jint _is_new_verify_byte_codes_fn = (jint) true; |
aoqi@0 | 87 | |
aoqi@0 | 88 | static void* verify_byte_codes_fn() { |
aoqi@0 | 89 | if (_verify_byte_codes_fn == NULL) { |
aoqi@0 | 90 | void *lib_handle = os::native_java_library(); |
aoqi@0 | 91 | void *func = os::dll_lookup(lib_handle, "VerifyClassCodesForMajorVersion"); |
aoqi@0 | 92 | OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
aoqi@0 | 93 | if (func == NULL) { |
aoqi@0 | 94 | OrderAccess::release_store(&_is_new_verify_byte_codes_fn, false); |
aoqi@0 | 95 | func = os::dll_lookup(lib_handle, "VerifyClassCodes"); |
aoqi@0 | 96 | OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
aoqi@0 | 97 | } |
aoqi@0 | 98 | } |
aoqi@0 | 99 | return (void*)_verify_byte_codes_fn; |
aoqi@0 | 100 | } |
aoqi@0 | 101 | |
aoqi@0 | 102 | |
aoqi@0 | 103 | // Methods in Verifier |
aoqi@0 | 104 | |
aoqi@0 | 105 | bool Verifier::should_verify_for(oop class_loader, bool should_verify_class) { |
aoqi@0 | 106 | return (class_loader == NULL || !should_verify_class) ? |
aoqi@0 | 107 | BytecodeVerificationLocal : BytecodeVerificationRemote; |
aoqi@0 | 108 | } |
aoqi@0 | 109 | |
aoqi@0 | 110 | bool Verifier::relax_verify_for(oop loader) { |
aoqi@0 | 111 | bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); |
aoqi@0 | 112 | bool need_verify = |
aoqi@0 | 113 | // verifyAll |
aoqi@0 | 114 | (BytecodeVerificationLocal && BytecodeVerificationRemote) || |
aoqi@0 | 115 | // verifyRemote |
aoqi@0 | 116 | (!BytecodeVerificationLocal && BytecodeVerificationRemote && !trusted); |
aoqi@0 | 117 | return !need_verify; |
aoqi@0 | 118 | } |
aoqi@0 | 119 | |
aoqi@0 | 120 | bool Verifier::verify(instanceKlassHandle klass, Verifier::Mode mode, bool should_verify_class, TRAPS) { |
aoqi@0 | 121 | HandleMark hm; |
aoqi@0 | 122 | ResourceMark rm(THREAD); |
aoqi@0 | 123 | |
aoqi@0 | 124 | Symbol* exception_name = NULL; |
aoqi@0 | 125 | const size_t message_buffer_len = klass->name()->utf8_length() + 1024; |
aoqi@0 | 126 | char* message_buffer = NEW_RESOURCE_ARRAY(char, message_buffer_len); |
aoqi@0 | 127 | char* exception_message = message_buffer; |
aoqi@0 | 128 | |
aoqi@0 | 129 | const char* klassName = klass->external_name(); |
aoqi@0 | 130 | bool can_failover = FailOverToOldVerifier && |
aoqi@0 | 131 | klass->major_version() < NOFAILOVER_MAJOR_VERSION; |
aoqi@0 | 132 | |
aoqi@0 | 133 | // If the class should be verified, first see if we can use the split |
aoqi@0 | 134 | // verifier. If not, or if verification fails and FailOverToOldVerifier |
aoqi@0 | 135 | // is set, then call the inference verifier. |
aoqi@0 | 136 | if (is_eligible_for_verification(klass, should_verify_class)) { |
aoqi@0 | 137 | if (TraceClassInitialization) { |
aoqi@0 | 138 | tty->print_cr("Start class verification for: %s", klassName); |
aoqi@0 | 139 | } |
aoqi@0 | 140 | if (klass->major_version() >= STACKMAP_ATTRIBUTE_MAJOR_VERSION) { |
aoqi@0 | 141 | ClassVerifier split_verifier(klass, THREAD); |
aoqi@0 | 142 | split_verifier.verify_class(THREAD); |
aoqi@0 | 143 | exception_name = split_verifier.result(); |
aoqi@0 | 144 | if (can_failover && !HAS_PENDING_EXCEPTION && |
aoqi@0 | 145 | (exception_name == vmSymbols::java_lang_VerifyError() || |
aoqi@0 | 146 | exception_name == vmSymbols::java_lang_ClassFormatError())) { |
aoqi@0 | 147 | if (TraceClassInitialization || VerboseVerification) { |
aoqi@0 | 148 | tty->print_cr( |
aoqi@0 | 149 | "Fail over class verification to old verifier for: %s", klassName); |
aoqi@0 | 150 | } |
aoqi@0 | 151 | exception_name = inference_verify( |
aoqi@0 | 152 | klass, message_buffer, message_buffer_len, THREAD); |
aoqi@0 | 153 | } |
aoqi@0 | 154 | if (exception_name != NULL) { |
aoqi@0 | 155 | exception_message = split_verifier.exception_message(); |
aoqi@0 | 156 | } |
aoqi@0 | 157 | } else { |
aoqi@0 | 158 | exception_name = inference_verify( |
aoqi@0 | 159 | klass, message_buffer, message_buffer_len, THREAD); |
aoqi@0 | 160 | } |
aoqi@0 | 161 | |
aoqi@0 | 162 | if (TraceClassInitialization || VerboseVerification) { |
aoqi@0 | 163 | if (HAS_PENDING_EXCEPTION) { |
aoqi@0 | 164 | tty->print("Verification for %s has", klassName); |
aoqi@0 | 165 | tty->print_cr(" exception pending %s ", |
aoqi@0 | 166 | InstanceKlass::cast(PENDING_EXCEPTION->klass())->external_name()); |
aoqi@0 | 167 | } else if (exception_name != NULL) { |
aoqi@0 | 168 | tty->print_cr("Verification for %s failed", klassName); |
aoqi@0 | 169 | } |
aoqi@0 | 170 | tty->print_cr("End class verification for: %s", klassName); |
aoqi@0 | 171 | } |
aoqi@0 | 172 | } |
aoqi@0 | 173 | |
aoqi@0 | 174 | if (HAS_PENDING_EXCEPTION) { |
aoqi@0 | 175 | return false; // use the existing exception |
aoqi@0 | 176 | } else if (exception_name == NULL) { |
aoqi@0 | 177 | return true; // verifcation succeeded |
aoqi@0 | 178 | } else { // VerifyError or ClassFormatError to be created and thrown |
aoqi@0 | 179 | ResourceMark rm(THREAD); |
aoqi@0 | 180 | instanceKlassHandle kls = |
aoqi@0 | 181 | SystemDictionary::resolve_or_fail(exception_name, true, CHECK_false); |
aoqi@0 | 182 | while (!kls.is_null()) { |
aoqi@0 | 183 | if (kls == klass) { |
aoqi@0 | 184 | // If the class being verified is the exception we're creating |
aoqi@0 | 185 | // or one of it's superclasses, we're in trouble and are going |
aoqi@0 | 186 | // to infinitely recurse when we try to initialize the exception. |
aoqi@0 | 187 | // So bail out here by throwing the preallocated VM error. |
aoqi@0 | 188 | THROW_OOP_(Universe::virtual_machine_error_instance(), false); |
aoqi@0 | 189 | } |
aoqi@0 | 190 | kls = kls->super(); |
aoqi@0 | 191 | } |
aoqi@0 | 192 | message_buffer[message_buffer_len - 1] = '\0'; // just to be sure |
aoqi@0 | 193 | THROW_MSG_(exception_name, exception_message, false); |
aoqi@0 | 194 | } |
aoqi@0 | 195 | } |
aoqi@0 | 196 | |
aoqi@0 | 197 | bool Verifier::is_eligible_for_verification(instanceKlassHandle klass, bool should_verify_class) { |
aoqi@0 | 198 | Symbol* name = klass->name(); |
aoqi@0 | 199 | Klass* refl_magic_klass = SystemDictionary::reflect_MagicAccessorImpl_klass(); |
aoqi@0 | 200 | |
aoqi@0 | 201 | bool is_reflect = refl_magic_klass != NULL && klass->is_subtype_of(refl_magic_klass); |
aoqi@0 | 202 | |
aoqi@0 | 203 | return (should_verify_for(klass->class_loader(), should_verify_class) && |
aoqi@0 | 204 | // return if the class is a bootstrapping class |
aoqi@0 | 205 | // or defineClass specified not to verify by default (flags override passed arg) |
aoqi@0 | 206 | // We need to skip the following four for bootstraping |
aoqi@0 | 207 | name != vmSymbols::java_lang_Object() && |
aoqi@0 | 208 | name != vmSymbols::java_lang_Class() && |
aoqi@0 | 209 | name != vmSymbols::java_lang_String() && |
aoqi@0 | 210 | name != vmSymbols::java_lang_Throwable() && |
aoqi@0 | 211 | |
aoqi@0 | 212 | // Can not verify the bytecodes for shared classes because they have |
aoqi@0 | 213 | // already been rewritten to contain constant pool cache indices, |
aoqi@0 | 214 | // which the verifier can't understand. |
aoqi@0 | 215 | // Shared classes shouldn't have stackmaps either. |
aoqi@0 | 216 | !klass()->is_shared() && |
aoqi@0 | 217 | |
aoqi@0 | 218 | // As of the fix for 4486457 we disable verification for all of the |
aoqi@0 | 219 | // dynamically-generated bytecodes associated with the 1.4 |
aoqi@0 | 220 | // reflection implementation, not just those associated with |
aoqi@0 | 221 | // sun/reflect/SerializationConstructorAccessor. |
aoqi@0 | 222 | // NOTE: this is called too early in the bootstrapping process to be |
aoqi@0 | 223 | // guarded by Universe::is_gte_jdk14x_version()/UseNewReflection. |
aoqi@0 | 224 | // Also for lambda generated code, gte jdk8 |
aoqi@0 | 225 | (!is_reflect || VerifyReflectionBytecodes)); |
aoqi@0 | 226 | } |
aoqi@0 | 227 | |
aoqi@0 | 228 | Symbol* Verifier::inference_verify( |
aoqi@0 | 229 | instanceKlassHandle klass, char* message, size_t message_len, TRAPS) { |
aoqi@0 | 230 | JavaThread* thread = (JavaThread*)THREAD; |
aoqi@0 | 231 | JNIEnv *env = thread->jni_environment(); |
aoqi@0 | 232 | |
aoqi@0 | 233 | void* verify_func = verify_byte_codes_fn(); |
aoqi@0 | 234 | |
aoqi@0 | 235 | if (verify_func == NULL) { |
aoqi@0 | 236 | jio_snprintf(message, message_len, "Could not link verifier"); |
aoqi@0 | 237 | return vmSymbols::java_lang_VerifyError(); |
aoqi@0 | 238 | } |
aoqi@0 | 239 | |
aoqi@0 | 240 | ResourceMark rm(THREAD); |
aoqi@0 | 241 | if (VerboseVerification) { |
aoqi@0 | 242 | tty->print_cr("Verifying class %s with old format", klass->external_name()); |
aoqi@0 | 243 | } |
aoqi@0 | 244 | |
aoqi@0 | 245 | jclass cls = (jclass) JNIHandles::make_local(env, klass->java_mirror()); |
aoqi@0 | 246 | jint result; |
aoqi@0 | 247 | |
aoqi@0 | 248 | { |
aoqi@0 | 249 | HandleMark hm(thread); |
aoqi@0 | 250 | ThreadToNativeFromVM ttn(thread); |
aoqi@0 | 251 | // ThreadToNativeFromVM takes care of changing thread_state, so safepoint |
aoqi@0 | 252 | // code knows that we have left the VM |
aoqi@0 | 253 | |
aoqi@0 | 254 | if (_is_new_verify_byte_codes_fn) { |
aoqi@0 | 255 | verify_byte_codes_fn_new_t func = |
aoqi@0 | 256 | CAST_TO_FN_PTR(verify_byte_codes_fn_new_t, verify_func); |
aoqi@0 | 257 | result = (*func)(env, cls, message, (int)message_len, |
aoqi@0 | 258 | klass->major_version()); |
aoqi@0 | 259 | } else { |
aoqi@0 | 260 | verify_byte_codes_fn_t func = |
aoqi@0 | 261 | CAST_TO_FN_PTR(verify_byte_codes_fn_t, verify_func); |
aoqi@0 | 262 | result = (*func)(env, cls, message, (int)message_len); |
aoqi@0 | 263 | } |
aoqi@0 | 264 | } |
aoqi@0 | 265 | |
aoqi@0 | 266 | JNIHandles::destroy_local(cls); |
aoqi@0 | 267 | |
aoqi@0 | 268 | // These numbers are chosen so that VerifyClassCodes interface doesn't need |
aoqi@0 | 269 | // to be changed (still return jboolean (unsigned char)), and result is |
aoqi@0 | 270 | // 1 when verification is passed. |
aoqi@0 | 271 | if (result == 0) { |
aoqi@0 | 272 | return vmSymbols::java_lang_VerifyError(); |
aoqi@0 | 273 | } else if (result == 1) { |
aoqi@0 | 274 | return NULL; // verified. |
aoqi@0 | 275 | } else if (result == 2) { |
aoqi@0 | 276 | THROW_MSG_(vmSymbols::java_lang_OutOfMemoryError(), message, NULL); |
aoqi@0 | 277 | } else if (result == 3) { |
aoqi@0 | 278 | return vmSymbols::java_lang_ClassFormatError(); |
aoqi@0 | 279 | } else { |
aoqi@0 | 280 | ShouldNotReachHere(); |
aoqi@0 | 281 | return NULL; |
aoqi@0 | 282 | } |
aoqi@0 | 283 | } |
aoqi@0 | 284 | |
aoqi@0 | 285 | TypeOrigin TypeOrigin::null() { |
aoqi@0 | 286 | return TypeOrigin(); |
aoqi@0 | 287 | } |
aoqi@0 | 288 | TypeOrigin TypeOrigin::local(u2 index, StackMapFrame* frame) { |
aoqi@0 | 289 | assert(frame != NULL, "Must have a frame"); |
aoqi@0 | 290 | return TypeOrigin(CF_LOCALS, index, StackMapFrame::copy(frame), |
aoqi@0 | 291 | frame->local_at(index)); |
aoqi@0 | 292 | } |
aoqi@0 | 293 | TypeOrigin TypeOrigin::stack(u2 index, StackMapFrame* frame) { |
aoqi@0 | 294 | assert(frame != NULL, "Must have a frame"); |
aoqi@0 | 295 | return TypeOrigin(CF_STACK, index, StackMapFrame::copy(frame), |
aoqi@0 | 296 | frame->stack_at(index)); |
aoqi@0 | 297 | } |
aoqi@0 | 298 | TypeOrigin TypeOrigin::sm_local(u2 index, StackMapFrame* frame) { |
aoqi@0 | 299 | assert(frame != NULL, "Must have a frame"); |
aoqi@0 | 300 | return TypeOrigin(SM_LOCALS, index, StackMapFrame::copy(frame), |
aoqi@0 | 301 | frame->local_at(index)); |
aoqi@0 | 302 | } |
aoqi@0 | 303 | TypeOrigin TypeOrigin::sm_stack(u2 index, StackMapFrame* frame) { |
aoqi@0 | 304 | assert(frame != NULL, "Must have a frame"); |
aoqi@0 | 305 | return TypeOrigin(SM_STACK, index, StackMapFrame::copy(frame), |
aoqi@0 | 306 | frame->stack_at(index)); |
aoqi@0 | 307 | } |
aoqi@0 | 308 | TypeOrigin TypeOrigin::bad_index(u2 index) { |
aoqi@0 | 309 | return TypeOrigin(BAD_INDEX, index, NULL, VerificationType::bogus_type()); |
aoqi@0 | 310 | } |
aoqi@0 | 311 | TypeOrigin TypeOrigin::cp(u2 index, VerificationType vt) { |
aoqi@0 | 312 | return TypeOrigin(CONST_POOL, index, NULL, vt); |
aoqi@0 | 313 | } |
aoqi@0 | 314 | TypeOrigin TypeOrigin::signature(VerificationType vt) { |
aoqi@0 | 315 | return TypeOrigin(SIG, 0, NULL, vt); |
aoqi@0 | 316 | } |
aoqi@0 | 317 | TypeOrigin TypeOrigin::implicit(VerificationType t) { |
aoqi@0 | 318 | return TypeOrigin(IMPLICIT, 0, NULL, t); |
aoqi@0 | 319 | } |
aoqi@0 | 320 | TypeOrigin TypeOrigin::frame(StackMapFrame* frame) { |
aoqi@0 | 321 | return TypeOrigin(FRAME_ONLY, 0, StackMapFrame::copy(frame), |
aoqi@0 | 322 | VerificationType::bogus_type()); |
aoqi@0 | 323 | } |
aoqi@0 | 324 | |
aoqi@0 | 325 | void TypeOrigin::reset_frame() { |
aoqi@0 | 326 | if (_frame != NULL) { |
aoqi@0 | 327 | _frame->restore(); |
aoqi@0 | 328 | } |
aoqi@0 | 329 | } |
aoqi@0 | 330 | |
aoqi@0 | 331 | void TypeOrigin::details(outputStream* ss) const { |
aoqi@0 | 332 | _type.print_on(ss); |
aoqi@0 | 333 | switch (_origin) { |
aoqi@0 | 334 | case CF_LOCALS: |
aoqi@0 | 335 | ss->print(" (current frame, locals[%d])", _index); |
aoqi@0 | 336 | break; |
aoqi@0 | 337 | case CF_STACK: |
aoqi@0 | 338 | ss->print(" (current frame, stack[%d])", _index); |
aoqi@0 | 339 | break; |
aoqi@0 | 340 | case SM_LOCALS: |
aoqi@0 | 341 | ss->print(" (stack map, locals[%d])", _index); |
aoqi@0 | 342 | break; |
aoqi@0 | 343 | case SM_STACK: |
aoqi@0 | 344 | ss->print(" (stack map, stack[%d])", _index); |
aoqi@0 | 345 | break; |
aoqi@0 | 346 | case CONST_POOL: |
aoqi@0 | 347 | ss->print(" (constant pool %d)", _index); |
aoqi@0 | 348 | break; |
aoqi@0 | 349 | case SIG: |
aoqi@0 | 350 | ss->print(" (from method signature)"); |
aoqi@0 | 351 | break; |
aoqi@0 | 352 | case IMPLICIT: |
aoqi@0 | 353 | case FRAME_ONLY: |
aoqi@0 | 354 | case NONE: |
aoqi@0 | 355 | default: |
aoqi@0 | 356 | ; |
aoqi@0 | 357 | } |
aoqi@0 | 358 | } |
aoqi@0 | 359 | |
aoqi@0 | 360 | #ifdef ASSERT |
aoqi@0 | 361 | void TypeOrigin::print_on(outputStream* str) const { |
aoqi@0 | 362 | str->print("{%d,%d,%p:", _origin, _index, _frame); |
aoqi@0 | 363 | if (_frame != NULL) { |
aoqi@0 | 364 | _frame->print_on(str); |
aoqi@0 | 365 | } else { |
aoqi@0 | 366 | str->print("null"); |
aoqi@0 | 367 | } |
aoqi@0 | 368 | str->print(","); |
aoqi@0 | 369 | _type.print_on(str); |
aoqi@0 | 370 | str->print("}"); |
aoqi@0 | 371 | } |
aoqi@0 | 372 | #endif |
aoqi@0 | 373 | |
aoqi@0 | 374 | void ErrorContext::details(outputStream* ss, const Method* method) const { |
aoqi@0 | 375 | if (is_valid()) { |
aoqi@0 | 376 | ss->cr(); |
aoqi@0 | 377 | ss->print_cr("Exception Details:"); |
aoqi@0 | 378 | location_details(ss, method); |
aoqi@0 | 379 | reason_details(ss); |
aoqi@0 | 380 | frame_details(ss); |
aoqi@0 | 381 | bytecode_details(ss, method); |
aoqi@0 | 382 | handler_details(ss, method); |
aoqi@0 | 383 | stackmap_details(ss, method); |
aoqi@0 | 384 | } |
aoqi@0 | 385 | } |
aoqi@0 | 386 | |
aoqi@0 | 387 | void ErrorContext::reason_details(outputStream* ss) const { |
aoqi@0 | 388 | streamIndentor si(ss); |
aoqi@0 | 389 | ss->indent().print_cr("Reason:"); |
aoqi@0 | 390 | streamIndentor si2(ss); |
aoqi@0 | 391 | ss->indent().print("%s", ""); |
aoqi@0 | 392 | switch (_fault) { |
aoqi@0 | 393 | case INVALID_BYTECODE: |
aoqi@0 | 394 | ss->print("Error exists in the bytecode"); |
aoqi@0 | 395 | break; |
aoqi@0 | 396 | case WRONG_TYPE: |
aoqi@0 | 397 | if (_expected.is_valid()) { |
aoqi@0 | 398 | ss->print("Type "); |
aoqi@0 | 399 | _type.details(ss); |
aoqi@0 | 400 | ss->print(" is not assignable to "); |
aoqi@0 | 401 | _expected.details(ss); |
aoqi@0 | 402 | } else { |
aoqi@0 | 403 | ss->print("Invalid type: "); |
aoqi@0 | 404 | _type.details(ss); |
aoqi@0 | 405 | } |
aoqi@0 | 406 | break; |
aoqi@0 | 407 | case FLAGS_MISMATCH: |
aoqi@0 | 408 | if (_expected.is_valid()) { |
aoqi@0 | 409 | ss->print("Current frame's flags are not assignable " |
aoqi@0 | 410 | "to stack map frame's."); |
aoqi@0 | 411 | } else { |
aoqi@0 | 412 | ss->print("Current frame's flags are invalid in this context."); |
aoqi@0 | 413 | } |
aoqi@0 | 414 | break; |
aoqi@0 | 415 | case BAD_CP_INDEX: |
aoqi@0 | 416 | ss->print("Constant pool index %d is invalid", _type.index()); |
aoqi@0 | 417 | break; |
aoqi@0 | 418 | case BAD_LOCAL_INDEX: |
aoqi@0 | 419 | ss->print("Local index %d is invalid", _type.index()); |
aoqi@0 | 420 | break; |
aoqi@0 | 421 | case LOCALS_SIZE_MISMATCH: |
aoqi@0 | 422 | ss->print("Current frame's local size doesn't match stackmap."); |
aoqi@0 | 423 | break; |
aoqi@0 | 424 | case STACK_SIZE_MISMATCH: |
aoqi@0 | 425 | ss->print("Current frame's stack size doesn't match stackmap."); |
aoqi@0 | 426 | break; |
aoqi@0 | 427 | case STACK_OVERFLOW: |
aoqi@0 | 428 | ss->print("Exceeded max stack size."); |
aoqi@0 | 429 | break; |
aoqi@0 | 430 | case STACK_UNDERFLOW: |
aoqi@0 | 431 | ss->print("Attempt to pop empty stack."); |
aoqi@0 | 432 | break; |
aoqi@0 | 433 | case MISSING_STACKMAP: |
aoqi@0 | 434 | ss->print("Expected stackmap frame at this location."); |
aoqi@0 | 435 | break; |
aoqi@0 | 436 | case BAD_STACKMAP: |
aoqi@0 | 437 | ss->print("Invalid stackmap specification."); |
aoqi@0 | 438 | break; |
aoqi@0 | 439 | case UNKNOWN: |
aoqi@0 | 440 | default: |
aoqi@0 | 441 | ShouldNotReachHere(); |
aoqi@0 | 442 | ss->print_cr("Unknown"); |
aoqi@0 | 443 | } |
aoqi@0 | 444 | ss->cr(); |
aoqi@0 | 445 | } |
aoqi@0 | 446 | |
aoqi@0 | 447 | void ErrorContext::location_details(outputStream* ss, const Method* method) const { |
aoqi@0 | 448 | if (_bci != -1 && method != NULL) { |
aoqi@0 | 449 | streamIndentor si(ss); |
aoqi@0 | 450 | const char* bytecode_name = "<invalid>"; |
aoqi@0 | 451 | if (method->validate_bci_from_bcx(_bci) != -1) { |
aoqi@0 | 452 | Bytecodes::Code code = Bytecodes::code_or_bp_at(method->bcp_from(_bci)); |
aoqi@0 | 453 | if (Bytecodes::is_defined(code)) { |
aoqi@0 | 454 | bytecode_name = Bytecodes::name(code); |
aoqi@0 | 455 | } else { |
aoqi@0 | 456 | bytecode_name = "<illegal>"; |
aoqi@0 | 457 | } |
aoqi@0 | 458 | } |
aoqi@0 | 459 | InstanceKlass* ik = method->method_holder(); |
aoqi@0 | 460 | ss->indent().print_cr("Location:"); |
aoqi@0 | 461 | streamIndentor si2(ss); |
aoqi@0 | 462 | ss->indent().print_cr("%s.%s%s @%d: %s", |
aoqi@0 | 463 | ik->name()->as_C_string(), method->name()->as_C_string(), |
aoqi@0 | 464 | method->signature()->as_C_string(), _bci, bytecode_name); |
aoqi@0 | 465 | } |
aoqi@0 | 466 | } |
aoqi@0 | 467 | |
aoqi@0 | 468 | void ErrorContext::frame_details(outputStream* ss) const { |
aoqi@0 | 469 | streamIndentor si(ss); |
aoqi@0 | 470 | if (_type.is_valid() && _type.frame() != NULL) { |
aoqi@0 | 471 | ss->indent().print_cr("Current Frame:"); |
aoqi@0 | 472 | streamIndentor si2(ss); |
aoqi@0 | 473 | _type.frame()->print_on(ss); |
aoqi@0 | 474 | } |
aoqi@0 | 475 | if (_expected.is_valid() && _expected.frame() != NULL) { |
aoqi@0 | 476 | ss->indent().print_cr("Stackmap Frame:"); |
aoqi@0 | 477 | streamIndentor si2(ss); |
aoqi@0 | 478 | _expected.frame()->print_on(ss); |
aoqi@0 | 479 | } |
aoqi@0 | 480 | } |
aoqi@0 | 481 | |
aoqi@0 | 482 | void ErrorContext::bytecode_details(outputStream* ss, const Method* method) const { |
aoqi@0 | 483 | if (method != NULL) { |
aoqi@0 | 484 | streamIndentor si(ss); |
aoqi@0 | 485 | ss->indent().print_cr("Bytecode:"); |
aoqi@0 | 486 | streamIndentor si2(ss); |
aoqi@0 | 487 | ss->print_data(method->code_base(), method->code_size(), false); |
aoqi@0 | 488 | } |
aoqi@0 | 489 | } |
aoqi@0 | 490 | |
aoqi@0 | 491 | void ErrorContext::handler_details(outputStream* ss, const Method* method) const { |
aoqi@0 | 492 | if (method != NULL) { |
aoqi@0 | 493 | streamIndentor si(ss); |
aoqi@0 | 494 | ExceptionTable table(method); |
aoqi@0 | 495 | if (table.length() > 0) { |
aoqi@0 | 496 | ss->indent().print_cr("Exception Handler Table:"); |
aoqi@0 | 497 | streamIndentor si2(ss); |
aoqi@0 | 498 | for (int i = 0; i < table.length(); ++i) { |
aoqi@0 | 499 | ss->indent().print_cr("bci [%d, %d] => handler: %d", table.start_pc(i), |
aoqi@0 | 500 | table.end_pc(i), table.handler_pc(i)); |
aoqi@0 | 501 | } |
aoqi@0 | 502 | } |
aoqi@0 | 503 | } |
aoqi@0 | 504 | } |
aoqi@0 | 505 | |
aoqi@0 | 506 | void ErrorContext::stackmap_details(outputStream* ss, const Method* method) const { |
aoqi@0 | 507 | if (method != NULL && method->has_stackmap_table()) { |
aoqi@0 | 508 | streamIndentor si(ss); |
aoqi@0 | 509 | ss->indent().print_cr("Stackmap Table:"); |
aoqi@0 | 510 | Array<u1>* data = method->stackmap_data(); |
aoqi@0 | 511 | stack_map_table* sm_table = |
aoqi@0 | 512 | stack_map_table::at((address)data->adr_at(0)); |
aoqi@0 | 513 | stack_map_frame* sm_frame = sm_table->entries(); |
aoqi@0 | 514 | streamIndentor si2(ss); |
aoqi@0 | 515 | int current_offset = -1; |
shshahma@8676 | 516 | address end_of_sm_table = (address)sm_table + method->stackmap_data()->length(); |
aoqi@0 | 517 | for (u2 i = 0; i < sm_table->number_of_entries(); ++i) { |
aoqi@0 | 518 | ss->indent(); |
shshahma@8676 | 519 | if (!sm_frame->verify((address)sm_frame, end_of_sm_table)) { |
hseigel@8570 | 520 | sm_frame->print_truncated(ss, current_offset); |
hseigel@8570 | 521 | return; |
hseigel@8570 | 522 | } |
aoqi@0 | 523 | sm_frame->print_on(ss, current_offset); |
aoqi@0 | 524 | ss->cr(); |
aoqi@0 | 525 | current_offset += sm_frame->offset_delta(); |
aoqi@0 | 526 | sm_frame = sm_frame->next(); |
aoqi@0 | 527 | } |
aoqi@0 | 528 | } |
aoqi@0 | 529 | } |
aoqi@0 | 530 | |
aoqi@0 | 531 | // Methods in ClassVerifier |
aoqi@0 | 532 | |
aoqi@0 | 533 | ClassVerifier::ClassVerifier( |
aoqi@0 | 534 | instanceKlassHandle klass, TRAPS) |
aoqi@0 | 535 | : _thread(THREAD), _exception_type(NULL), _message(NULL), _klass(klass) { |
aoqi@0 | 536 | _this_type = VerificationType::reference_type(klass->name()); |
aoqi@0 | 537 | // Create list to hold symbols in reference area. |
aoqi@0 | 538 | _symbols = new GrowableArray<Symbol*>(100, 0, NULL); |
aoqi@0 | 539 | } |
aoqi@0 | 540 | |
aoqi@0 | 541 | ClassVerifier::~ClassVerifier() { |
aoqi@0 | 542 | // Decrement the reference count for any symbols created. |
aoqi@0 | 543 | for (int i = 0; i < _symbols->length(); i++) { |
aoqi@0 | 544 | Symbol* s = _symbols->at(i); |
aoqi@0 | 545 | s->decrement_refcount(); |
aoqi@0 | 546 | } |
aoqi@0 | 547 | } |
aoqi@0 | 548 | |
aoqi@0 | 549 | VerificationType ClassVerifier::object_type() const { |
aoqi@0 | 550 | return VerificationType::reference_type(vmSymbols::java_lang_Object()); |
aoqi@0 | 551 | } |
aoqi@0 | 552 | |
aoqi@0 | 553 | TypeOrigin ClassVerifier::ref_ctx(const char* sig, TRAPS) { |
aoqi@0 | 554 | VerificationType vt = VerificationType::reference_type( |
aoqi@0 | 555 | create_temporary_symbol(sig, (int)strlen(sig), THREAD)); |
aoqi@0 | 556 | return TypeOrigin::implicit(vt); |
aoqi@0 | 557 | } |
aoqi@0 | 558 | |
aoqi@0 | 559 | void ClassVerifier::verify_class(TRAPS) { |
aoqi@0 | 560 | if (VerboseVerification) { |
aoqi@0 | 561 | tty->print_cr("Verifying class %s with new format", |
aoqi@0 | 562 | _klass->external_name()); |
aoqi@0 | 563 | } |
aoqi@0 | 564 | |
aoqi@0 | 565 | Array<Method*>* methods = _klass->methods(); |
aoqi@0 | 566 | int num_methods = methods->length(); |
aoqi@0 | 567 | |
aoqi@0 | 568 | for (int index = 0; index < num_methods; index++) { |
aoqi@0 | 569 | // Check for recursive re-verification before each method. |
aoqi@0 | 570 | if (was_recursively_verified()) return; |
aoqi@0 | 571 | |
aoqi@0 | 572 | Method* m = methods->at(index); |
aoqi@0 | 573 | if (m->is_native() || m->is_abstract() || m->is_overpass()) { |
aoqi@0 | 574 | // If m is native or abstract, skip it. It is checked in class file |
aoqi@0 | 575 | // parser that methods do not override a final method. Overpass methods |
aoqi@0 | 576 | // are trusted since the VM generates them. |
aoqi@0 | 577 | continue; |
aoqi@0 | 578 | } |
aoqi@0 | 579 | verify_method(methodHandle(THREAD, m), CHECK_VERIFY(this)); |
aoqi@0 | 580 | } |
aoqi@0 | 581 | |
aoqi@0 | 582 | if (VerboseVerification || TraceClassInitialization) { |
aoqi@0 | 583 | if (was_recursively_verified()) |
aoqi@0 | 584 | tty->print_cr("Recursive verification detected for: %s", |
aoqi@0 | 585 | _klass->external_name()); |
aoqi@0 | 586 | } |
aoqi@0 | 587 | } |
aoqi@0 | 588 | |
aoqi@0 | 589 | void ClassVerifier::verify_method(methodHandle m, TRAPS) { |
aoqi@0 | 590 | HandleMark hm(THREAD); |
aoqi@0 | 591 | _method = m; // initialize _method |
aoqi@0 | 592 | if (VerboseVerification) { |
aoqi@0 | 593 | tty->print_cr("Verifying method %s", m->name_and_sig_as_C_string()); |
aoqi@0 | 594 | } |
aoqi@0 | 595 | |
aoqi@0 | 596 | // For clang, the only good constant format string is a literal constant format string. |
aoqi@0 | 597 | #define bad_type_msg "Bad type on operand stack in %s" |
aoqi@0 | 598 | |
aoqi@0 | 599 | int32_t max_stack = m->verifier_max_stack(); |
aoqi@0 | 600 | int32_t max_locals = m->max_locals(); |
aoqi@0 | 601 | constantPoolHandle cp(THREAD, m->constants()); |
aoqi@0 | 602 | |
aoqi@0 | 603 | if (!SignatureVerifier::is_valid_method_signature(m->signature())) { |
aoqi@0 | 604 | class_format_error("Invalid method signature"); |
aoqi@0 | 605 | return; |
aoqi@0 | 606 | } |
aoqi@0 | 607 | |
aoqi@0 | 608 | // Initial stack map frame: offset is 0, stack is initially empty. |
aoqi@0 | 609 | StackMapFrame current_frame(max_locals, max_stack, this); |
aoqi@0 | 610 | // Set initial locals |
aoqi@0 | 611 | VerificationType return_type = current_frame.set_locals_from_arg( |
aoqi@0 | 612 | m, current_type(), CHECK_VERIFY(this)); |
aoqi@0 | 613 | |
aoqi@0 | 614 | int32_t stackmap_index = 0; // index to the stackmap array |
aoqi@0 | 615 | |
aoqi@0 | 616 | u4 code_length = m->code_size(); |
aoqi@0 | 617 | |
aoqi@0 | 618 | // Scan the bytecode and map each instruction's start offset to a number. |
aoqi@0 | 619 | char* code_data = generate_code_data(m, code_length, CHECK_VERIFY(this)); |
aoqi@0 | 620 | |
aoqi@0 | 621 | int ex_min = code_length; |
aoqi@0 | 622 | int ex_max = -1; |
aoqi@0 | 623 | // Look through each item on the exception table. Each of the fields must refer |
aoqi@0 | 624 | // to a legal instruction. |
aoqi@0 | 625 | verify_exception_handler_table( |
aoqi@0 | 626 | code_length, code_data, ex_min, ex_max, CHECK_VERIFY(this)); |
aoqi@0 | 627 | |
aoqi@0 | 628 | // Look through each entry on the local variable table and make sure |
aoqi@0 | 629 | // its range of code array offsets is valid. (4169817) |
aoqi@0 | 630 | if (m->has_localvariable_table()) { |
aoqi@0 | 631 | verify_local_variable_table(code_length, code_data, CHECK_VERIFY(this)); |
aoqi@0 | 632 | } |
aoqi@0 | 633 | |
aoqi@0 | 634 | Array<u1>* stackmap_data = m->stackmap_data(); |
aoqi@0 | 635 | StackMapStream stream(stackmap_data); |
aoqi@0 | 636 | StackMapReader reader(this, &stream, code_data, code_length, THREAD); |
aoqi@0 | 637 | StackMapTable stackmap_table(&reader, ¤t_frame, max_locals, max_stack, |
aoqi@0 | 638 | code_data, code_length, CHECK_VERIFY(this)); |
aoqi@0 | 639 | |
aoqi@0 | 640 | if (VerboseVerification) { |
aoqi@0 | 641 | stackmap_table.print_on(tty); |
aoqi@0 | 642 | } |
aoqi@0 | 643 | |
aoqi@0 | 644 | RawBytecodeStream bcs(m); |
aoqi@0 | 645 | |
aoqi@0 | 646 | // Scan the byte code linearly from the start to the end |
aoqi@0 | 647 | bool no_control_flow = false; // Set to true when there is no direct control |
aoqi@0 | 648 | // flow from current instruction to the next |
aoqi@0 | 649 | // instruction in sequence |
aoqi@0 | 650 | |
aoqi@0 | 651 | Bytecodes::Code opcode; |
aoqi@0 | 652 | while (!bcs.is_last_bytecode()) { |
aoqi@0 | 653 | // Check for recursive re-verification before each bytecode. |
aoqi@0 | 654 | if (was_recursively_verified()) return; |
aoqi@0 | 655 | |
aoqi@0 | 656 | opcode = bcs.raw_next(); |
aoqi@0 | 657 | u2 bci = bcs.bci(); |
aoqi@0 | 658 | |
aoqi@0 | 659 | // Set current frame's offset to bci |
aoqi@0 | 660 | current_frame.set_offset(bci); |
aoqi@0 | 661 | current_frame.set_mark(); |
aoqi@0 | 662 | |
aoqi@0 | 663 | // Make sure every offset in stackmap table point to the beginning to |
aoqi@0 | 664 | // an instruction. Match current_frame to stackmap_table entry with |
aoqi@0 | 665 | // the same offset if exists. |
aoqi@0 | 666 | stackmap_index = verify_stackmap_table( |
aoqi@0 | 667 | stackmap_index, bci, ¤t_frame, &stackmap_table, |
aoqi@0 | 668 | no_control_flow, CHECK_VERIFY(this)); |
aoqi@0 | 669 | |
aoqi@0 | 670 | |
aoqi@0 | 671 | bool this_uninit = false; // Set to true when invokespecial <init> initialized 'this' |
hseigel@7666 | 672 | bool verified_exc_handlers = false; |
aoqi@0 | 673 | |
aoqi@0 | 674 | // Merge with the next instruction |
aoqi@0 | 675 | { |
aoqi@0 | 676 | u2 index; |
aoqi@0 | 677 | int target; |
aoqi@0 | 678 | VerificationType type, type2; |
aoqi@0 | 679 | VerificationType atype; |
aoqi@0 | 680 | |
aoqi@0 | 681 | #ifndef PRODUCT |
aoqi@0 | 682 | if (VerboseVerification) { |
aoqi@0 | 683 | current_frame.print_on(tty); |
aoqi@0 | 684 | tty->print_cr("offset = %d, opcode = %s", bci, Bytecodes::name(opcode)); |
aoqi@0 | 685 | } |
aoqi@0 | 686 | #endif |
aoqi@0 | 687 | |
aoqi@0 | 688 | // Make sure wide instruction is in correct format |
aoqi@0 | 689 | if (bcs.is_wide()) { |
aoqi@0 | 690 | if (opcode != Bytecodes::_iinc && opcode != Bytecodes::_iload && |
aoqi@0 | 691 | opcode != Bytecodes::_aload && opcode != Bytecodes::_lload && |
aoqi@0 | 692 | opcode != Bytecodes::_istore && opcode != Bytecodes::_astore && |
aoqi@0 | 693 | opcode != Bytecodes::_lstore && opcode != Bytecodes::_fload && |
aoqi@0 | 694 | opcode != Bytecodes::_dload && opcode != Bytecodes::_fstore && |
aoqi@0 | 695 | opcode != Bytecodes::_dstore) { |
aoqi@0 | 696 | /* Unreachable? RawBytecodeStream's raw_next() returns 'illegal' |
aoqi@0 | 697 | * if we encounter a wide instruction that modifies an invalid |
aoqi@0 | 698 | * opcode (not one of the ones listed above) */ |
aoqi@0 | 699 | verify_error(ErrorContext::bad_code(bci), "Bad wide instruction"); |
aoqi@0 | 700 | return; |
aoqi@0 | 701 | } |
aoqi@0 | 702 | } |
aoqi@0 | 703 | |
hseigel@7666 | 704 | // Look for possible jump target in exception handlers and see if it |
hseigel@7666 | 705 | // matches current_frame. Do this check here for astore*, dstore*, |
hseigel@7666 | 706 | // fstore*, istore*, and lstore* opcodes because they can change the type |
hseigel@7666 | 707 | // state by adding a local. JVM Spec says that the incoming type state |
hseigel@7666 | 708 | // should be used for this check. So, do the check here before a possible |
hseigel@7666 | 709 | // local is added to the type state. |
hseigel@7666 | 710 | if (Bytecodes::is_store_into_local(opcode) && bci >= ex_min && bci < ex_max) { |
hseigel@7666 | 711 | verify_exception_handler_targets( |
hseigel@7666 | 712 | bci, this_uninit, ¤t_frame, &stackmap_table, CHECK_VERIFY(this)); |
hseigel@7666 | 713 | verified_exc_handlers = true; |
hseigel@7666 | 714 | } |
hseigel@7666 | 715 | |
aoqi@0 | 716 | switch (opcode) { |
aoqi@0 | 717 | case Bytecodes::_nop : |
aoqi@0 | 718 | no_control_flow = false; break; |
aoqi@0 | 719 | case Bytecodes::_aconst_null : |
aoqi@0 | 720 | current_frame.push_stack( |
aoqi@0 | 721 | VerificationType::null_type(), CHECK_VERIFY(this)); |
aoqi@0 | 722 | no_control_flow = false; break; |
aoqi@0 | 723 | case Bytecodes::_iconst_m1 : |
aoqi@0 | 724 | case Bytecodes::_iconst_0 : |
aoqi@0 | 725 | case Bytecodes::_iconst_1 : |
aoqi@0 | 726 | case Bytecodes::_iconst_2 : |
aoqi@0 | 727 | case Bytecodes::_iconst_3 : |
aoqi@0 | 728 | case Bytecodes::_iconst_4 : |
aoqi@0 | 729 | case Bytecodes::_iconst_5 : |
aoqi@0 | 730 | current_frame.push_stack( |
aoqi@0 | 731 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 732 | no_control_flow = false; break; |
aoqi@0 | 733 | case Bytecodes::_lconst_0 : |
aoqi@0 | 734 | case Bytecodes::_lconst_1 : |
aoqi@0 | 735 | current_frame.push_stack_2( |
aoqi@0 | 736 | VerificationType::long_type(), |
aoqi@0 | 737 | VerificationType::long2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 738 | no_control_flow = false; break; |
aoqi@0 | 739 | case Bytecodes::_fconst_0 : |
aoqi@0 | 740 | case Bytecodes::_fconst_1 : |
aoqi@0 | 741 | case Bytecodes::_fconst_2 : |
aoqi@0 | 742 | current_frame.push_stack( |
aoqi@0 | 743 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 744 | no_control_flow = false; break; |
aoqi@0 | 745 | case Bytecodes::_dconst_0 : |
aoqi@0 | 746 | case Bytecodes::_dconst_1 : |
aoqi@0 | 747 | current_frame.push_stack_2( |
aoqi@0 | 748 | VerificationType::double_type(), |
aoqi@0 | 749 | VerificationType::double2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 750 | no_control_flow = false; break; |
aoqi@0 | 751 | case Bytecodes::_sipush : |
aoqi@0 | 752 | case Bytecodes::_bipush : |
aoqi@0 | 753 | current_frame.push_stack( |
aoqi@0 | 754 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 755 | no_control_flow = false; break; |
aoqi@0 | 756 | case Bytecodes::_ldc : |
aoqi@0 | 757 | verify_ldc( |
aoqi@0 | 758 | opcode, bcs.get_index_u1(), ¤t_frame, |
aoqi@0 | 759 | cp, bci, CHECK_VERIFY(this)); |
aoqi@0 | 760 | no_control_flow = false; break; |
aoqi@0 | 761 | case Bytecodes::_ldc_w : |
aoqi@0 | 762 | case Bytecodes::_ldc2_w : |
aoqi@0 | 763 | verify_ldc( |
aoqi@0 | 764 | opcode, bcs.get_index_u2(), ¤t_frame, |
aoqi@0 | 765 | cp, bci, CHECK_VERIFY(this)); |
aoqi@0 | 766 | no_control_flow = false; break; |
aoqi@0 | 767 | case Bytecodes::_iload : |
aoqi@0 | 768 | verify_iload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 769 | no_control_flow = false; break; |
aoqi@0 | 770 | case Bytecodes::_iload_0 : |
aoqi@0 | 771 | case Bytecodes::_iload_1 : |
aoqi@0 | 772 | case Bytecodes::_iload_2 : |
aoqi@0 | 773 | case Bytecodes::_iload_3 : |
aoqi@0 | 774 | index = opcode - Bytecodes::_iload_0; |
aoqi@0 | 775 | verify_iload(index, ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 776 | no_control_flow = false; break; |
aoqi@0 | 777 | case Bytecodes::_lload : |
aoqi@0 | 778 | verify_lload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 779 | no_control_flow = false; break; |
aoqi@0 | 780 | case Bytecodes::_lload_0 : |
aoqi@0 | 781 | case Bytecodes::_lload_1 : |
aoqi@0 | 782 | case Bytecodes::_lload_2 : |
aoqi@0 | 783 | case Bytecodes::_lload_3 : |
aoqi@0 | 784 | index = opcode - Bytecodes::_lload_0; |
aoqi@0 | 785 | verify_lload(index, ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 786 | no_control_flow = false; break; |
aoqi@0 | 787 | case Bytecodes::_fload : |
aoqi@0 | 788 | verify_fload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 789 | no_control_flow = false; break; |
aoqi@0 | 790 | case Bytecodes::_fload_0 : |
aoqi@0 | 791 | case Bytecodes::_fload_1 : |
aoqi@0 | 792 | case Bytecodes::_fload_2 : |
aoqi@0 | 793 | case Bytecodes::_fload_3 : |
aoqi@0 | 794 | index = opcode - Bytecodes::_fload_0; |
aoqi@0 | 795 | verify_fload(index, ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 796 | no_control_flow = false; break; |
aoqi@0 | 797 | case Bytecodes::_dload : |
aoqi@0 | 798 | verify_dload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 799 | no_control_flow = false; break; |
aoqi@0 | 800 | case Bytecodes::_dload_0 : |
aoqi@0 | 801 | case Bytecodes::_dload_1 : |
aoqi@0 | 802 | case Bytecodes::_dload_2 : |
aoqi@0 | 803 | case Bytecodes::_dload_3 : |
aoqi@0 | 804 | index = opcode - Bytecodes::_dload_0; |
aoqi@0 | 805 | verify_dload(index, ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 806 | no_control_flow = false; break; |
aoqi@0 | 807 | case Bytecodes::_aload : |
aoqi@0 | 808 | verify_aload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 809 | no_control_flow = false; break; |
aoqi@0 | 810 | case Bytecodes::_aload_0 : |
aoqi@0 | 811 | case Bytecodes::_aload_1 : |
aoqi@0 | 812 | case Bytecodes::_aload_2 : |
aoqi@0 | 813 | case Bytecodes::_aload_3 : |
aoqi@0 | 814 | index = opcode - Bytecodes::_aload_0; |
aoqi@0 | 815 | verify_aload(index, ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 816 | no_control_flow = false; break; |
aoqi@0 | 817 | case Bytecodes::_iaload : |
aoqi@0 | 818 | type = current_frame.pop_stack( |
aoqi@0 | 819 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 820 | atype = current_frame.pop_stack( |
aoqi@0 | 821 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 822 | if (!atype.is_int_array()) { |
aoqi@0 | 823 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 824 | current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), |
aoqi@0 | 825 | bad_type_msg, "iaload"); |
aoqi@0 | 826 | return; |
aoqi@0 | 827 | } |
aoqi@0 | 828 | current_frame.push_stack( |
aoqi@0 | 829 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 830 | no_control_flow = false; break; |
aoqi@0 | 831 | case Bytecodes::_baload : |
aoqi@0 | 832 | type = current_frame.pop_stack( |
aoqi@0 | 833 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 834 | atype = current_frame.pop_stack( |
aoqi@0 | 835 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 836 | if (!atype.is_bool_array() && !atype.is_byte_array()) { |
aoqi@0 | 837 | verify_error( |
aoqi@0 | 838 | ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), |
aoqi@0 | 839 | bad_type_msg, "baload"); |
aoqi@0 | 840 | return; |
aoqi@0 | 841 | } |
aoqi@0 | 842 | current_frame.push_stack( |
aoqi@0 | 843 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 844 | no_control_flow = false; break; |
aoqi@0 | 845 | case Bytecodes::_caload : |
aoqi@0 | 846 | type = current_frame.pop_stack( |
aoqi@0 | 847 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 848 | atype = current_frame.pop_stack( |
aoqi@0 | 849 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 850 | if (!atype.is_char_array()) { |
aoqi@0 | 851 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 852 | current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), |
aoqi@0 | 853 | bad_type_msg, "caload"); |
aoqi@0 | 854 | return; |
aoqi@0 | 855 | } |
aoqi@0 | 856 | current_frame.push_stack( |
aoqi@0 | 857 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 858 | no_control_flow = false; break; |
aoqi@0 | 859 | case Bytecodes::_saload : |
aoqi@0 | 860 | type = current_frame.pop_stack( |
aoqi@0 | 861 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 862 | atype = current_frame.pop_stack( |
aoqi@0 | 863 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 864 | if (!atype.is_short_array()) { |
aoqi@0 | 865 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 866 | current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), |
aoqi@0 | 867 | bad_type_msg, "saload"); |
aoqi@0 | 868 | return; |
aoqi@0 | 869 | } |
aoqi@0 | 870 | current_frame.push_stack( |
aoqi@0 | 871 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 872 | no_control_flow = false; break; |
aoqi@0 | 873 | case Bytecodes::_laload : |
aoqi@0 | 874 | type = current_frame.pop_stack( |
aoqi@0 | 875 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 876 | atype = current_frame.pop_stack( |
aoqi@0 | 877 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 878 | if (!atype.is_long_array()) { |
aoqi@0 | 879 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 880 | current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), |
aoqi@0 | 881 | bad_type_msg, "laload"); |
aoqi@0 | 882 | return; |
aoqi@0 | 883 | } |
aoqi@0 | 884 | current_frame.push_stack_2( |
aoqi@0 | 885 | VerificationType::long_type(), |
aoqi@0 | 886 | VerificationType::long2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 887 | no_control_flow = false; break; |
aoqi@0 | 888 | case Bytecodes::_faload : |
aoqi@0 | 889 | type = current_frame.pop_stack( |
aoqi@0 | 890 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 891 | atype = current_frame.pop_stack( |
aoqi@0 | 892 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 893 | if (!atype.is_float_array()) { |
aoqi@0 | 894 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 895 | current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), |
aoqi@0 | 896 | bad_type_msg, "faload"); |
aoqi@0 | 897 | return; |
aoqi@0 | 898 | } |
aoqi@0 | 899 | current_frame.push_stack( |
aoqi@0 | 900 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 901 | no_control_flow = false; break; |
aoqi@0 | 902 | case Bytecodes::_daload : |
aoqi@0 | 903 | type = current_frame.pop_stack( |
aoqi@0 | 904 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 905 | atype = current_frame.pop_stack( |
aoqi@0 | 906 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 907 | if (!atype.is_double_array()) { |
aoqi@0 | 908 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 909 | current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), |
aoqi@0 | 910 | bad_type_msg, "daload"); |
aoqi@0 | 911 | return; |
aoqi@0 | 912 | } |
aoqi@0 | 913 | current_frame.push_stack_2( |
aoqi@0 | 914 | VerificationType::double_type(), |
aoqi@0 | 915 | VerificationType::double2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 916 | no_control_flow = false; break; |
aoqi@0 | 917 | case Bytecodes::_aaload : { |
aoqi@0 | 918 | type = current_frame.pop_stack( |
aoqi@0 | 919 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 920 | atype = current_frame.pop_stack( |
aoqi@0 | 921 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 922 | if (!atype.is_reference_array()) { |
aoqi@0 | 923 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 924 | current_frame.stack_top_ctx(), |
aoqi@0 | 925 | TypeOrigin::implicit(VerificationType::reference_check())), |
aoqi@0 | 926 | bad_type_msg, "aaload"); |
aoqi@0 | 927 | return; |
aoqi@0 | 928 | } |
aoqi@0 | 929 | if (atype.is_null()) { |
aoqi@0 | 930 | current_frame.push_stack( |
aoqi@0 | 931 | VerificationType::null_type(), CHECK_VERIFY(this)); |
aoqi@0 | 932 | } else { |
aoqi@0 | 933 | VerificationType component = |
aoqi@0 | 934 | atype.get_component(this, CHECK_VERIFY(this)); |
aoqi@0 | 935 | current_frame.push_stack(component, CHECK_VERIFY(this)); |
aoqi@0 | 936 | } |
aoqi@0 | 937 | no_control_flow = false; break; |
aoqi@0 | 938 | } |
aoqi@0 | 939 | case Bytecodes::_istore : |
aoqi@0 | 940 | verify_istore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 941 | no_control_flow = false; break; |
aoqi@0 | 942 | case Bytecodes::_istore_0 : |
aoqi@0 | 943 | case Bytecodes::_istore_1 : |
aoqi@0 | 944 | case Bytecodes::_istore_2 : |
aoqi@0 | 945 | case Bytecodes::_istore_3 : |
aoqi@0 | 946 | index = opcode - Bytecodes::_istore_0; |
aoqi@0 | 947 | verify_istore(index, ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 948 | no_control_flow = false; break; |
aoqi@0 | 949 | case Bytecodes::_lstore : |
aoqi@0 | 950 | verify_lstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 951 | no_control_flow = false; break; |
aoqi@0 | 952 | case Bytecodes::_lstore_0 : |
aoqi@0 | 953 | case Bytecodes::_lstore_1 : |
aoqi@0 | 954 | case Bytecodes::_lstore_2 : |
aoqi@0 | 955 | case Bytecodes::_lstore_3 : |
aoqi@0 | 956 | index = opcode - Bytecodes::_lstore_0; |
aoqi@0 | 957 | verify_lstore(index, ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 958 | no_control_flow = false; break; |
aoqi@0 | 959 | case Bytecodes::_fstore : |
aoqi@0 | 960 | verify_fstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 961 | no_control_flow = false; break; |
aoqi@0 | 962 | case Bytecodes::_fstore_0 : |
aoqi@0 | 963 | case Bytecodes::_fstore_1 : |
aoqi@0 | 964 | case Bytecodes::_fstore_2 : |
aoqi@0 | 965 | case Bytecodes::_fstore_3 : |
aoqi@0 | 966 | index = opcode - Bytecodes::_fstore_0; |
aoqi@0 | 967 | verify_fstore(index, ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 968 | no_control_flow = false; break; |
aoqi@0 | 969 | case Bytecodes::_dstore : |
aoqi@0 | 970 | verify_dstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 971 | no_control_flow = false; break; |
aoqi@0 | 972 | case Bytecodes::_dstore_0 : |
aoqi@0 | 973 | case Bytecodes::_dstore_1 : |
aoqi@0 | 974 | case Bytecodes::_dstore_2 : |
aoqi@0 | 975 | case Bytecodes::_dstore_3 : |
aoqi@0 | 976 | index = opcode - Bytecodes::_dstore_0; |
aoqi@0 | 977 | verify_dstore(index, ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 978 | no_control_flow = false; break; |
aoqi@0 | 979 | case Bytecodes::_astore : |
aoqi@0 | 980 | verify_astore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 981 | no_control_flow = false; break; |
aoqi@0 | 982 | case Bytecodes::_astore_0 : |
aoqi@0 | 983 | case Bytecodes::_astore_1 : |
aoqi@0 | 984 | case Bytecodes::_astore_2 : |
aoqi@0 | 985 | case Bytecodes::_astore_3 : |
aoqi@0 | 986 | index = opcode - Bytecodes::_astore_0; |
aoqi@0 | 987 | verify_astore(index, ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 988 | no_control_flow = false; break; |
aoqi@0 | 989 | case Bytecodes::_iastore : |
aoqi@0 | 990 | type = current_frame.pop_stack( |
aoqi@0 | 991 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 992 | type2 = current_frame.pop_stack( |
aoqi@0 | 993 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 994 | atype = current_frame.pop_stack( |
aoqi@0 | 995 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 996 | if (!atype.is_int_array()) { |
aoqi@0 | 997 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 998 | current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), |
aoqi@0 | 999 | bad_type_msg, "iastore"); |
aoqi@0 | 1000 | return; |
aoqi@0 | 1001 | } |
aoqi@0 | 1002 | no_control_flow = false; break; |
aoqi@0 | 1003 | case Bytecodes::_bastore : |
aoqi@0 | 1004 | type = current_frame.pop_stack( |
aoqi@0 | 1005 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1006 | type2 = current_frame.pop_stack( |
aoqi@0 | 1007 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1008 | atype = current_frame.pop_stack( |
aoqi@0 | 1009 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1010 | if (!atype.is_bool_array() && !atype.is_byte_array()) { |
aoqi@0 | 1011 | verify_error( |
aoqi@0 | 1012 | ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), |
aoqi@0 | 1013 | bad_type_msg, "bastore"); |
aoqi@0 | 1014 | return; |
aoqi@0 | 1015 | } |
aoqi@0 | 1016 | no_control_flow = false; break; |
aoqi@0 | 1017 | case Bytecodes::_castore : |
aoqi@0 | 1018 | current_frame.pop_stack( |
aoqi@0 | 1019 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1020 | current_frame.pop_stack( |
aoqi@0 | 1021 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1022 | atype = current_frame.pop_stack( |
aoqi@0 | 1023 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1024 | if (!atype.is_char_array()) { |
aoqi@0 | 1025 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 1026 | current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), |
aoqi@0 | 1027 | bad_type_msg, "castore"); |
aoqi@0 | 1028 | return; |
aoqi@0 | 1029 | } |
aoqi@0 | 1030 | no_control_flow = false; break; |
aoqi@0 | 1031 | case Bytecodes::_sastore : |
aoqi@0 | 1032 | current_frame.pop_stack( |
aoqi@0 | 1033 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1034 | current_frame.pop_stack( |
aoqi@0 | 1035 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1036 | atype = current_frame.pop_stack( |
aoqi@0 | 1037 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1038 | if (!atype.is_short_array()) { |
aoqi@0 | 1039 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 1040 | current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), |
aoqi@0 | 1041 | bad_type_msg, "sastore"); |
aoqi@0 | 1042 | return; |
aoqi@0 | 1043 | } |
aoqi@0 | 1044 | no_control_flow = false; break; |
aoqi@0 | 1045 | case Bytecodes::_lastore : |
aoqi@0 | 1046 | current_frame.pop_stack_2( |
aoqi@0 | 1047 | VerificationType::long2_type(), |
aoqi@0 | 1048 | VerificationType::long_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1049 | current_frame.pop_stack( |
aoqi@0 | 1050 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1051 | atype = current_frame.pop_stack( |
aoqi@0 | 1052 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1053 | if (!atype.is_long_array()) { |
aoqi@0 | 1054 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 1055 | current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), |
aoqi@0 | 1056 | bad_type_msg, "lastore"); |
aoqi@0 | 1057 | return; |
aoqi@0 | 1058 | } |
aoqi@0 | 1059 | no_control_flow = false; break; |
aoqi@0 | 1060 | case Bytecodes::_fastore : |
aoqi@0 | 1061 | current_frame.pop_stack( |
aoqi@0 | 1062 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1063 | current_frame.pop_stack |
aoqi@0 | 1064 | (VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1065 | atype = current_frame.pop_stack( |
aoqi@0 | 1066 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1067 | if (!atype.is_float_array()) { |
aoqi@0 | 1068 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 1069 | current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), |
aoqi@0 | 1070 | bad_type_msg, "fastore"); |
aoqi@0 | 1071 | return; |
aoqi@0 | 1072 | } |
aoqi@0 | 1073 | no_control_flow = false; break; |
aoqi@0 | 1074 | case Bytecodes::_dastore : |
aoqi@0 | 1075 | current_frame.pop_stack_2( |
aoqi@0 | 1076 | VerificationType::double2_type(), |
aoqi@0 | 1077 | VerificationType::double_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1078 | current_frame.pop_stack( |
aoqi@0 | 1079 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1080 | atype = current_frame.pop_stack( |
aoqi@0 | 1081 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1082 | if (!atype.is_double_array()) { |
aoqi@0 | 1083 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 1084 | current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), |
aoqi@0 | 1085 | bad_type_msg, "dastore"); |
aoqi@0 | 1086 | return; |
aoqi@0 | 1087 | } |
aoqi@0 | 1088 | no_control_flow = false; break; |
aoqi@0 | 1089 | case Bytecodes::_aastore : |
aoqi@0 | 1090 | type = current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1091 | type2 = current_frame.pop_stack( |
aoqi@0 | 1092 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1093 | atype = current_frame.pop_stack( |
aoqi@0 | 1094 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1095 | // more type-checking is done at runtime |
aoqi@0 | 1096 | if (!atype.is_reference_array()) { |
aoqi@0 | 1097 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 1098 | current_frame.stack_top_ctx(), |
aoqi@0 | 1099 | TypeOrigin::implicit(VerificationType::reference_check())), |
aoqi@0 | 1100 | bad_type_msg, "aastore"); |
aoqi@0 | 1101 | return; |
aoqi@0 | 1102 | } |
aoqi@0 | 1103 | // 4938384: relaxed constraint in JVMS 3nd edition. |
aoqi@0 | 1104 | no_control_flow = false; break; |
aoqi@0 | 1105 | case Bytecodes::_pop : |
aoqi@0 | 1106 | current_frame.pop_stack( |
aoqi@0 | 1107 | VerificationType::category1_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1108 | no_control_flow = false; break; |
aoqi@0 | 1109 | case Bytecodes::_pop2 : |
aoqi@0 | 1110 | type = current_frame.pop_stack(CHECK_VERIFY(this)); |
aoqi@0 | 1111 | if (type.is_category1()) { |
aoqi@0 | 1112 | current_frame.pop_stack( |
aoqi@0 | 1113 | VerificationType::category1_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1114 | } else if (type.is_category2_2nd()) { |
aoqi@0 | 1115 | current_frame.pop_stack( |
aoqi@0 | 1116 | VerificationType::category2_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1117 | } else { |
aoqi@0 | 1118 | /* Unreachable? Would need a category2_1st on TOS |
aoqi@0 | 1119 | * which does not appear possible. */ |
aoqi@0 | 1120 | verify_error( |
aoqi@0 | 1121 | ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), |
aoqi@0 | 1122 | bad_type_msg, "pop2"); |
aoqi@0 | 1123 | return; |
aoqi@0 | 1124 | } |
aoqi@0 | 1125 | no_control_flow = false; break; |
aoqi@0 | 1126 | case Bytecodes::_dup : |
aoqi@0 | 1127 | type = current_frame.pop_stack( |
aoqi@0 | 1128 | VerificationType::category1_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1129 | current_frame.push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1130 | current_frame.push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1131 | no_control_flow = false; break; |
aoqi@0 | 1132 | case Bytecodes::_dup_x1 : |
aoqi@0 | 1133 | type = current_frame.pop_stack( |
aoqi@0 | 1134 | VerificationType::category1_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1135 | type2 = current_frame.pop_stack( |
aoqi@0 | 1136 | VerificationType::category1_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1137 | current_frame.push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1138 | current_frame.push_stack(type2, CHECK_VERIFY(this)); |
aoqi@0 | 1139 | current_frame.push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1140 | no_control_flow = false; break; |
aoqi@0 | 1141 | case Bytecodes::_dup_x2 : |
aoqi@0 | 1142 | { |
aoqi@0 | 1143 | VerificationType type3; |
aoqi@0 | 1144 | type = current_frame.pop_stack( |
aoqi@0 | 1145 | VerificationType::category1_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1146 | type2 = current_frame.pop_stack(CHECK_VERIFY(this)); |
aoqi@0 | 1147 | if (type2.is_category1()) { |
aoqi@0 | 1148 | type3 = current_frame.pop_stack( |
aoqi@0 | 1149 | VerificationType::category1_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1150 | } else if (type2.is_category2_2nd()) { |
aoqi@0 | 1151 | type3 = current_frame.pop_stack( |
aoqi@0 | 1152 | VerificationType::category2_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1153 | } else { |
aoqi@0 | 1154 | /* Unreachable? Would need a category2_1st at stack depth 2 with |
aoqi@0 | 1155 | * a category1 on TOS which does not appear possible. */ |
aoqi@0 | 1156 | verify_error(ErrorContext::bad_type( |
aoqi@0 | 1157 | bci, current_frame.stack_top_ctx()), bad_type_msg, "dup_x2"); |
aoqi@0 | 1158 | return; |
aoqi@0 | 1159 | } |
aoqi@0 | 1160 | current_frame.push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1161 | current_frame.push_stack(type3, CHECK_VERIFY(this)); |
aoqi@0 | 1162 | current_frame.push_stack(type2, CHECK_VERIFY(this)); |
aoqi@0 | 1163 | current_frame.push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1164 | no_control_flow = false; break; |
aoqi@0 | 1165 | } |
aoqi@0 | 1166 | case Bytecodes::_dup2 : |
aoqi@0 | 1167 | type = current_frame.pop_stack(CHECK_VERIFY(this)); |
aoqi@0 | 1168 | if (type.is_category1()) { |
aoqi@0 | 1169 | type2 = current_frame.pop_stack( |
aoqi@0 | 1170 | VerificationType::category1_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1171 | } else if (type.is_category2_2nd()) { |
aoqi@0 | 1172 | type2 = current_frame.pop_stack( |
aoqi@0 | 1173 | VerificationType::category2_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1174 | } else { |
aoqi@0 | 1175 | /* Unreachable? Would need a category2_1st on TOS which does not |
aoqi@0 | 1176 | * appear possible. */ |
aoqi@0 | 1177 | verify_error( |
aoqi@0 | 1178 | ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), |
aoqi@0 | 1179 | bad_type_msg, "dup2"); |
aoqi@0 | 1180 | return; |
aoqi@0 | 1181 | } |
aoqi@0 | 1182 | current_frame.push_stack(type2, CHECK_VERIFY(this)); |
aoqi@0 | 1183 | current_frame.push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1184 | current_frame.push_stack(type2, CHECK_VERIFY(this)); |
aoqi@0 | 1185 | current_frame.push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1186 | no_control_flow = false; break; |
aoqi@0 | 1187 | case Bytecodes::_dup2_x1 : |
aoqi@0 | 1188 | { |
aoqi@0 | 1189 | VerificationType type3; |
aoqi@0 | 1190 | type = current_frame.pop_stack(CHECK_VERIFY(this)); |
aoqi@0 | 1191 | if (type.is_category1()) { |
aoqi@0 | 1192 | type2 = current_frame.pop_stack( |
aoqi@0 | 1193 | VerificationType::category1_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1194 | } else if (type.is_category2_2nd()) { |
aoqi@0 | 1195 | type2 = current_frame.pop_stack( |
aoqi@0 | 1196 | VerificationType::category2_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1197 | } else { |
aoqi@0 | 1198 | /* Unreachable? Would need a category2_1st on TOS which does |
aoqi@0 | 1199 | * not appear possible. */ |
aoqi@0 | 1200 | verify_error( |
aoqi@0 | 1201 | ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), |
aoqi@0 | 1202 | bad_type_msg, "dup2_x1"); |
aoqi@0 | 1203 | return; |
aoqi@0 | 1204 | } |
aoqi@0 | 1205 | type3 = current_frame.pop_stack( |
aoqi@0 | 1206 | VerificationType::category1_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1207 | current_frame.push_stack(type2, CHECK_VERIFY(this)); |
aoqi@0 | 1208 | current_frame.push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1209 | current_frame.push_stack(type3, CHECK_VERIFY(this)); |
aoqi@0 | 1210 | current_frame.push_stack(type2, CHECK_VERIFY(this)); |
aoqi@0 | 1211 | current_frame.push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1212 | no_control_flow = false; break; |
aoqi@0 | 1213 | } |
aoqi@0 | 1214 | case Bytecodes::_dup2_x2 : |
aoqi@0 | 1215 | { |
aoqi@0 | 1216 | VerificationType type3, type4; |
aoqi@0 | 1217 | type = current_frame.pop_stack(CHECK_VERIFY(this)); |
aoqi@0 | 1218 | if (type.is_category1()) { |
aoqi@0 | 1219 | type2 = current_frame.pop_stack( |
aoqi@0 | 1220 | VerificationType::category1_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1221 | } else if (type.is_category2_2nd()) { |
aoqi@0 | 1222 | type2 = current_frame.pop_stack( |
aoqi@0 | 1223 | VerificationType::category2_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1224 | } else { |
aoqi@0 | 1225 | /* Unreachable? Would need a category2_1st on TOS which does |
aoqi@0 | 1226 | * not appear possible. */ |
aoqi@0 | 1227 | verify_error( |
aoqi@0 | 1228 | ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), |
aoqi@0 | 1229 | bad_type_msg, "dup2_x2"); |
aoqi@0 | 1230 | return; |
aoqi@0 | 1231 | } |
aoqi@0 | 1232 | type3 = current_frame.pop_stack(CHECK_VERIFY(this)); |
aoqi@0 | 1233 | if (type3.is_category1()) { |
aoqi@0 | 1234 | type4 = current_frame.pop_stack( |
aoqi@0 | 1235 | VerificationType::category1_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1236 | } else if (type3.is_category2_2nd()) { |
aoqi@0 | 1237 | type4 = current_frame.pop_stack( |
aoqi@0 | 1238 | VerificationType::category2_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1239 | } else { |
aoqi@0 | 1240 | /* Unreachable? Would need a category2_1st on TOS after popping |
aoqi@0 | 1241 | * a long/double or two category 1's, which does not |
aoqi@0 | 1242 | * appear possible. */ |
aoqi@0 | 1243 | verify_error( |
aoqi@0 | 1244 | ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), |
aoqi@0 | 1245 | bad_type_msg, "dup2_x2"); |
aoqi@0 | 1246 | return; |
aoqi@0 | 1247 | } |
aoqi@0 | 1248 | current_frame.push_stack(type2, CHECK_VERIFY(this)); |
aoqi@0 | 1249 | current_frame.push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1250 | current_frame.push_stack(type4, CHECK_VERIFY(this)); |
aoqi@0 | 1251 | current_frame.push_stack(type3, CHECK_VERIFY(this)); |
aoqi@0 | 1252 | current_frame.push_stack(type2, CHECK_VERIFY(this)); |
aoqi@0 | 1253 | current_frame.push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1254 | no_control_flow = false; break; |
aoqi@0 | 1255 | } |
aoqi@0 | 1256 | case Bytecodes::_swap : |
aoqi@0 | 1257 | type = current_frame.pop_stack( |
aoqi@0 | 1258 | VerificationType::category1_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1259 | type2 = current_frame.pop_stack( |
aoqi@0 | 1260 | VerificationType::category1_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1261 | current_frame.push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1262 | current_frame.push_stack(type2, CHECK_VERIFY(this)); |
aoqi@0 | 1263 | no_control_flow = false; break; |
aoqi@0 | 1264 | case Bytecodes::_iadd : |
aoqi@0 | 1265 | case Bytecodes::_isub : |
aoqi@0 | 1266 | case Bytecodes::_imul : |
aoqi@0 | 1267 | case Bytecodes::_idiv : |
aoqi@0 | 1268 | case Bytecodes::_irem : |
aoqi@0 | 1269 | case Bytecodes::_ishl : |
aoqi@0 | 1270 | case Bytecodes::_ishr : |
aoqi@0 | 1271 | case Bytecodes::_iushr : |
aoqi@0 | 1272 | case Bytecodes::_ior : |
aoqi@0 | 1273 | case Bytecodes::_ixor : |
aoqi@0 | 1274 | case Bytecodes::_iand : |
aoqi@0 | 1275 | current_frame.pop_stack( |
aoqi@0 | 1276 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1277 | // fall through |
aoqi@0 | 1278 | case Bytecodes::_ineg : |
aoqi@0 | 1279 | current_frame.pop_stack( |
aoqi@0 | 1280 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1281 | current_frame.push_stack( |
aoqi@0 | 1282 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1283 | no_control_flow = false; break; |
aoqi@0 | 1284 | case Bytecodes::_ladd : |
aoqi@0 | 1285 | case Bytecodes::_lsub : |
aoqi@0 | 1286 | case Bytecodes::_lmul : |
aoqi@0 | 1287 | case Bytecodes::_ldiv : |
aoqi@0 | 1288 | case Bytecodes::_lrem : |
aoqi@0 | 1289 | case Bytecodes::_land : |
aoqi@0 | 1290 | case Bytecodes::_lor : |
aoqi@0 | 1291 | case Bytecodes::_lxor : |
aoqi@0 | 1292 | current_frame.pop_stack_2( |
aoqi@0 | 1293 | VerificationType::long2_type(), |
aoqi@0 | 1294 | VerificationType::long_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1295 | // fall through |
aoqi@0 | 1296 | case Bytecodes::_lneg : |
aoqi@0 | 1297 | current_frame.pop_stack_2( |
aoqi@0 | 1298 | VerificationType::long2_type(), |
aoqi@0 | 1299 | VerificationType::long_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1300 | current_frame.push_stack_2( |
aoqi@0 | 1301 | VerificationType::long_type(), |
aoqi@0 | 1302 | VerificationType::long2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1303 | no_control_flow = false; break; |
aoqi@0 | 1304 | case Bytecodes::_lshl : |
aoqi@0 | 1305 | case Bytecodes::_lshr : |
aoqi@0 | 1306 | case Bytecodes::_lushr : |
aoqi@0 | 1307 | current_frame.pop_stack( |
aoqi@0 | 1308 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1309 | current_frame.pop_stack_2( |
aoqi@0 | 1310 | VerificationType::long2_type(), |
aoqi@0 | 1311 | VerificationType::long_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1312 | current_frame.push_stack_2( |
aoqi@0 | 1313 | VerificationType::long_type(), |
aoqi@0 | 1314 | VerificationType::long2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1315 | no_control_flow = false; break; |
aoqi@0 | 1316 | case Bytecodes::_fadd : |
aoqi@0 | 1317 | case Bytecodes::_fsub : |
aoqi@0 | 1318 | case Bytecodes::_fmul : |
aoqi@0 | 1319 | case Bytecodes::_fdiv : |
aoqi@0 | 1320 | case Bytecodes::_frem : |
aoqi@0 | 1321 | current_frame.pop_stack( |
aoqi@0 | 1322 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1323 | // fall through |
aoqi@0 | 1324 | case Bytecodes::_fneg : |
aoqi@0 | 1325 | current_frame.pop_stack( |
aoqi@0 | 1326 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1327 | current_frame.push_stack( |
aoqi@0 | 1328 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1329 | no_control_flow = false; break; |
aoqi@0 | 1330 | case Bytecodes::_dadd : |
aoqi@0 | 1331 | case Bytecodes::_dsub : |
aoqi@0 | 1332 | case Bytecodes::_dmul : |
aoqi@0 | 1333 | case Bytecodes::_ddiv : |
aoqi@0 | 1334 | case Bytecodes::_drem : |
aoqi@0 | 1335 | current_frame.pop_stack_2( |
aoqi@0 | 1336 | VerificationType::double2_type(), |
aoqi@0 | 1337 | VerificationType::double_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1338 | // fall through |
aoqi@0 | 1339 | case Bytecodes::_dneg : |
aoqi@0 | 1340 | current_frame.pop_stack_2( |
aoqi@0 | 1341 | VerificationType::double2_type(), |
aoqi@0 | 1342 | VerificationType::double_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1343 | current_frame.push_stack_2( |
aoqi@0 | 1344 | VerificationType::double_type(), |
aoqi@0 | 1345 | VerificationType::double2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1346 | no_control_flow = false; break; |
aoqi@0 | 1347 | case Bytecodes::_iinc : |
aoqi@0 | 1348 | verify_iinc(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 1349 | no_control_flow = false; break; |
aoqi@0 | 1350 | case Bytecodes::_i2l : |
aoqi@0 | 1351 | type = current_frame.pop_stack( |
aoqi@0 | 1352 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1353 | current_frame.push_stack_2( |
aoqi@0 | 1354 | VerificationType::long_type(), |
aoqi@0 | 1355 | VerificationType::long2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1356 | no_control_flow = false; break; |
aoqi@0 | 1357 | case Bytecodes::_l2i : |
aoqi@0 | 1358 | current_frame.pop_stack_2( |
aoqi@0 | 1359 | VerificationType::long2_type(), |
aoqi@0 | 1360 | VerificationType::long_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1361 | current_frame.push_stack( |
aoqi@0 | 1362 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1363 | no_control_flow = false; break; |
aoqi@0 | 1364 | case Bytecodes::_i2f : |
aoqi@0 | 1365 | current_frame.pop_stack( |
aoqi@0 | 1366 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1367 | current_frame.push_stack( |
aoqi@0 | 1368 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1369 | no_control_flow = false; break; |
aoqi@0 | 1370 | case Bytecodes::_i2d : |
aoqi@0 | 1371 | current_frame.pop_stack( |
aoqi@0 | 1372 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1373 | current_frame.push_stack_2( |
aoqi@0 | 1374 | VerificationType::double_type(), |
aoqi@0 | 1375 | VerificationType::double2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1376 | no_control_flow = false; break; |
aoqi@0 | 1377 | case Bytecodes::_l2f : |
aoqi@0 | 1378 | current_frame.pop_stack_2( |
aoqi@0 | 1379 | VerificationType::long2_type(), |
aoqi@0 | 1380 | VerificationType::long_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1381 | current_frame.push_stack( |
aoqi@0 | 1382 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1383 | no_control_flow = false; break; |
aoqi@0 | 1384 | case Bytecodes::_l2d : |
aoqi@0 | 1385 | current_frame.pop_stack_2( |
aoqi@0 | 1386 | VerificationType::long2_type(), |
aoqi@0 | 1387 | VerificationType::long_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1388 | current_frame.push_stack_2( |
aoqi@0 | 1389 | VerificationType::double_type(), |
aoqi@0 | 1390 | VerificationType::double2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1391 | no_control_flow = false; break; |
aoqi@0 | 1392 | case Bytecodes::_f2i : |
aoqi@0 | 1393 | current_frame.pop_stack( |
aoqi@0 | 1394 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1395 | current_frame.push_stack( |
aoqi@0 | 1396 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1397 | no_control_flow = false; break; |
aoqi@0 | 1398 | case Bytecodes::_f2l : |
aoqi@0 | 1399 | current_frame.pop_stack( |
aoqi@0 | 1400 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1401 | current_frame.push_stack_2( |
aoqi@0 | 1402 | VerificationType::long_type(), |
aoqi@0 | 1403 | VerificationType::long2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1404 | no_control_flow = false; break; |
aoqi@0 | 1405 | case Bytecodes::_f2d : |
aoqi@0 | 1406 | current_frame.pop_stack( |
aoqi@0 | 1407 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1408 | current_frame.push_stack_2( |
aoqi@0 | 1409 | VerificationType::double_type(), |
aoqi@0 | 1410 | VerificationType::double2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1411 | no_control_flow = false; break; |
aoqi@0 | 1412 | case Bytecodes::_d2i : |
aoqi@0 | 1413 | current_frame.pop_stack_2( |
aoqi@0 | 1414 | VerificationType::double2_type(), |
aoqi@0 | 1415 | VerificationType::double_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1416 | current_frame.push_stack( |
aoqi@0 | 1417 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1418 | no_control_flow = false; break; |
aoqi@0 | 1419 | case Bytecodes::_d2l : |
aoqi@0 | 1420 | current_frame.pop_stack_2( |
aoqi@0 | 1421 | VerificationType::double2_type(), |
aoqi@0 | 1422 | VerificationType::double_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1423 | current_frame.push_stack_2( |
aoqi@0 | 1424 | VerificationType::long_type(), |
aoqi@0 | 1425 | VerificationType::long2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1426 | no_control_flow = false; break; |
aoqi@0 | 1427 | case Bytecodes::_d2f : |
aoqi@0 | 1428 | current_frame.pop_stack_2( |
aoqi@0 | 1429 | VerificationType::double2_type(), |
aoqi@0 | 1430 | VerificationType::double_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1431 | current_frame.push_stack( |
aoqi@0 | 1432 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1433 | no_control_flow = false; break; |
aoqi@0 | 1434 | case Bytecodes::_i2b : |
aoqi@0 | 1435 | case Bytecodes::_i2c : |
aoqi@0 | 1436 | case Bytecodes::_i2s : |
aoqi@0 | 1437 | current_frame.pop_stack( |
aoqi@0 | 1438 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1439 | current_frame.push_stack( |
aoqi@0 | 1440 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1441 | no_control_flow = false; break; |
aoqi@0 | 1442 | case Bytecodes::_lcmp : |
aoqi@0 | 1443 | current_frame.pop_stack_2( |
aoqi@0 | 1444 | VerificationType::long2_type(), |
aoqi@0 | 1445 | VerificationType::long_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1446 | current_frame.pop_stack_2( |
aoqi@0 | 1447 | VerificationType::long2_type(), |
aoqi@0 | 1448 | VerificationType::long_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1449 | current_frame.push_stack( |
aoqi@0 | 1450 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1451 | no_control_flow = false; break; |
aoqi@0 | 1452 | case Bytecodes::_fcmpl : |
aoqi@0 | 1453 | case Bytecodes::_fcmpg : |
aoqi@0 | 1454 | current_frame.pop_stack( |
aoqi@0 | 1455 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1456 | current_frame.pop_stack( |
aoqi@0 | 1457 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1458 | current_frame.push_stack( |
aoqi@0 | 1459 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1460 | no_control_flow = false; break; |
aoqi@0 | 1461 | case Bytecodes::_dcmpl : |
aoqi@0 | 1462 | case Bytecodes::_dcmpg : |
aoqi@0 | 1463 | current_frame.pop_stack_2( |
aoqi@0 | 1464 | VerificationType::double2_type(), |
aoqi@0 | 1465 | VerificationType::double_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1466 | current_frame.pop_stack_2( |
aoqi@0 | 1467 | VerificationType::double2_type(), |
aoqi@0 | 1468 | VerificationType::double_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1469 | current_frame.push_stack( |
aoqi@0 | 1470 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1471 | no_control_flow = false; break; |
aoqi@0 | 1472 | case Bytecodes::_if_icmpeq: |
aoqi@0 | 1473 | case Bytecodes::_if_icmpne: |
aoqi@0 | 1474 | case Bytecodes::_if_icmplt: |
aoqi@0 | 1475 | case Bytecodes::_if_icmpge: |
aoqi@0 | 1476 | case Bytecodes::_if_icmpgt: |
aoqi@0 | 1477 | case Bytecodes::_if_icmple: |
aoqi@0 | 1478 | current_frame.pop_stack( |
aoqi@0 | 1479 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1480 | // fall through |
aoqi@0 | 1481 | case Bytecodes::_ifeq: |
aoqi@0 | 1482 | case Bytecodes::_ifne: |
aoqi@0 | 1483 | case Bytecodes::_iflt: |
aoqi@0 | 1484 | case Bytecodes::_ifge: |
aoqi@0 | 1485 | case Bytecodes::_ifgt: |
aoqi@0 | 1486 | case Bytecodes::_ifle: |
aoqi@0 | 1487 | current_frame.pop_stack( |
aoqi@0 | 1488 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1489 | target = bcs.dest(); |
aoqi@0 | 1490 | stackmap_table.check_jump_target( |
aoqi@0 | 1491 | ¤t_frame, target, CHECK_VERIFY(this)); |
aoqi@0 | 1492 | no_control_flow = false; break; |
aoqi@0 | 1493 | case Bytecodes::_if_acmpeq : |
aoqi@0 | 1494 | case Bytecodes::_if_acmpne : |
aoqi@0 | 1495 | current_frame.pop_stack( |
aoqi@0 | 1496 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1497 | // fall through |
aoqi@0 | 1498 | case Bytecodes::_ifnull : |
aoqi@0 | 1499 | case Bytecodes::_ifnonnull : |
aoqi@0 | 1500 | current_frame.pop_stack( |
aoqi@0 | 1501 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1502 | target = bcs.dest(); |
aoqi@0 | 1503 | stackmap_table.check_jump_target |
aoqi@0 | 1504 | (¤t_frame, target, CHECK_VERIFY(this)); |
aoqi@0 | 1505 | no_control_flow = false; break; |
aoqi@0 | 1506 | case Bytecodes::_goto : |
aoqi@0 | 1507 | target = bcs.dest(); |
aoqi@0 | 1508 | stackmap_table.check_jump_target( |
aoqi@0 | 1509 | ¤t_frame, target, CHECK_VERIFY(this)); |
aoqi@0 | 1510 | no_control_flow = true; break; |
aoqi@0 | 1511 | case Bytecodes::_goto_w : |
aoqi@0 | 1512 | target = bcs.dest_w(); |
aoqi@0 | 1513 | stackmap_table.check_jump_target( |
aoqi@0 | 1514 | ¤t_frame, target, CHECK_VERIFY(this)); |
aoqi@0 | 1515 | no_control_flow = true; break; |
aoqi@0 | 1516 | case Bytecodes::_tableswitch : |
aoqi@0 | 1517 | case Bytecodes::_lookupswitch : |
aoqi@0 | 1518 | verify_switch( |
aoqi@0 | 1519 | &bcs, code_length, code_data, ¤t_frame, |
aoqi@0 | 1520 | &stackmap_table, CHECK_VERIFY(this)); |
aoqi@0 | 1521 | no_control_flow = true; break; |
aoqi@0 | 1522 | case Bytecodes::_ireturn : |
aoqi@0 | 1523 | type = current_frame.pop_stack( |
aoqi@0 | 1524 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1525 | verify_return_value(return_type, type, bci, |
aoqi@0 | 1526 | ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 1527 | no_control_flow = true; break; |
aoqi@0 | 1528 | case Bytecodes::_lreturn : |
aoqi@0 | 1529 | type2 = current_frame.pop_stack( |
aoqi@0 | 1530 | VerificationType::long2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1531 | type = current_frame.pop_stack( |
aoqi@0 | 1532 | VerificationType::long_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1533 | verify_return_value(return_type, type, bci, |
aoqi@0 | 1534 | ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 1535 | no_control_flow = true; break; |
aoqi@0 | 1536 | case Bytecodes::_freturn : |
aoqi@0 | 1537 | type = current_frame.pop_stack( |
aoqi@0 | 1538 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1539 | verify_return_value(return_type, type, bci, |
aoqi@0 | 1540 | ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 1541 | no_control_flow = true; break; |
aoqi@0 | 1542 | case Bytecodes::_dreturn : |
aoqi@0 | 1543 | type2 = current_frame.pop_stack( |
aoqi@0 | 1544 | VerificationType::double2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1545 | type = current_frame.pop_stack( |
aoqi@0 | 1546 | VerificationType::double_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1547 | verify_return_value(return_type, type, bci, |
aoqi@0 | 1548 | ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 1549 | no_control_flow = true; break; |
aoqi@0 | 1550 | case Bytecodes::_areturn : |
aoqi@0 | 1551 | type = current_frame.pop_stack( |
aoqi@0 | 1552 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1553 | verify_return_value(return_type, type, bci, |
aoqi@0 | 1554 | ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 1555 | no_control_flow = true; break; |
aoqi@0 | 1556 | case Bytecodes::_return : |
aoqi@0 | 1557 | if (return_type != VerificationType::bogus_type()) { |
aoqi@0 | 1558 | verify_error(ErrorContext::bad_code(bci), |
aoqi@0 | 1559 | "Method expects a return value"); |
aoqi@0 | 1560 | return; |
aoqi@0 | 1561 | } |
aoqi@0 | 1562 | // Make sure "this" has been initialized if current method is an |
aoqi@0 | 1563 | // <init> |
aoqi@0 | 1564 | if (_method->name() == vmSymbols::object_initializer_name() && |
aoqi@0 | 1565 | current_frame.flag_this_uninit()) { |
aoqi@0 | 1566 | verify_error(ErrorContext::bad_code(bci), |
aoqi@0 | 1567 | "Constructor must call super() or this() " |
aoqi@0 | 1568 | "before return"); |
aoqi@0 | 1569 | return; |
aoqi@0 | 1570 | } |
aoqi@0 | 1571 | no_control_flow = true; break; |
aoqi@0 | 1572 | case Bytecodes::_getstatic : |
aoqi@0 | 1573 | case Bytecodes::_putstatic : |
aoqi@0 | 1574 | case Bytecodes::_getfield : |
aoqi@0 | 1575 | case Bytecodes::_putfield : |
aoqi@0 | 1576 | verify_field_instructions( |
aoqi@0 | 1577 | &bcs, ¤t_frame, cp, CHECK_VERIFY(this)); |
aoqi@0 | 1578 | no_control_flow = false; break; |
aoqi@0 | 1579 | case Bytecodes::_invokevirtual : |
aoqi@0 | 1580 | case Bytecodes::_invokespecial : |
aoqi@0 | 1581 | case Bytecodes::_invokestatic : |
aoqi@0 | 1582 | verify_invoke_instructions( |
hseigel@7473 | 1583 | &bcs, code_length, ¤t_frame, (bci >= ex_min && bci < ex_max), |
hseigel@7473 | 1584 | &this_uninit, return_type, cp, &stackmap_table, CHECK_VERIFY(this)); |
aoqi@0 | 1585 | no_control_flow = false; break; |
aoqi@0 | 1586 | case Bytecodes::_invokeinterface : |
aoqi@0 | 1587 | case Bytecodes::_invokedynamic : |
aoqi@0 | 1588 | verify_invoke_instructions( |
hseigel@7473 | 1589 | &bcs, code_length, ¤t_frame, (bci >= ex_min && bci < ex_max), |
hseigel@7473 | 1590 | &this_uninit, return_type, cp, &stackmap_table, CHECK_VERIFY(this)); |
aoqi@0 | 1591 | no_control_flow = false; break; |
aoqi@0 | 1592 | case Bytecodes::_new : |
aoqi@0 | 1593 | { |
aoqi@0 | 1594 | index = bcs.get_index_u2(); |
aoqi@0 | 1595 | verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
aoqi@0 | 1596 | VerificationType new_class_type = |
aoqi@0 | 1597 | cp_index_to_type(index, cp, CHECK_VERIFY(this)); |
aoqi@0 | 1598 | if (!new_class_type.is_object()) { |
aoqi@0 | 1599 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 1600 | TypeOrigin::cp(index, new_class_type)), |
aoqi@0 | 1601 | "Illegal new instruction"); |
aoqi@0 | 1602 | return; |
aoqi@0 | 1603 | } |
aoqi@0 | 1604 | type = VerificationType::uninitialized_type(bci); |
aoqi@0 | 1605 | current_frame.push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1606 | no_control_flow = false; break; |
aoqi@0 | 1607 | } |
aoqi@0 | 1608 | case Bytecodes::_newarray : |
aoqi@0 | 1609 | type = get_newarray_type(bcs.get_index(), bci, CHECK_VERIFY(this)); |
aoqi@0 | 1610 | current_frame.pop_stack( |
aoqi@0 | 1611 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1612 | current_frame.push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1613 | no_control_flow = false; break; |
aoqi@0 | 1614 | case Bytecodes::_anewarray : |
aoqi@0 | 1615 | verify_anewarray( |
aoqi@0 | 1616 | bci, bcs.get_index_u2(), cp, ¤t_frame, CHECK_VERIFY(this)); |
aoqi@0 | 1617 | no_control_flow = false; break; |
aoqi@0 | 1618 | case Bytecodes::_arraylength : |
aoqi@0 | 1619 | type = current_frame.pop_stack( |
aoqi@0 | 1620 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1621 | if (!(type.is_null() || type.is_array())) { |
aoqi@0 | 1622 | verify_error(ErrorContext::bad_type( |
aoqi@0 | 1623 | bci, current_frame.stack_top_ctx()), |
aoqi@0 | 1624 | bad_type_msg, "arraylength"); |
aoqi@0 | 1625 | } |
aoqi@0 | 1626 | current_frame.push_stack( |
aoqi@0 | 1627 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1628 | no_control_flow = false; break; |
aoqi@0 | 1629 | case Bytecodes::_checkcast : |
aoqi@0 | 1630 | { |
aoqi@0 | 1631 | index = bcs.get_index_u2(); |
aoqi@0 | 1632 | verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
aoqi@0 | 1633 | current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1634 | VerificationType klass_type = cp_index_to_type( |
aoqi@0 | 1635 | index, cp, CHECK_VERIFY(this)); |
aoqi@0 | 1636 | current_frame.push_stack(klass_type, CHECK_VERIFY(this)); |
aoqi@0 | 1637 | no_control_flow = false; break; |
aoqi@0 | 1638 | } |
aoqi@0 | 1639 | case Bytecodes::_instanceof : { |
aoqi@0 | 1640 | index = bcs.get_index_u2(); |
aoqi@0 | 1641 | verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
aoqi@0 | 1642 | current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1643 | current_frame.push_stack( |
aoqi@0 | 1644 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1645 | no_control_flow = false; break; |
aoqi@0 | 1646 | } |
aoqi@0 | 1647 | case Bytecodes::_monitorenter : |
aoqi@0 | 1648 | case Bytecodes::_monitorexit : |
aoqi@0 | 1649 | current_frame.pop_stack( |
aoqi@0 | 1650 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 1651 | no_control_flow = false; break; |
aoqi@0 | 1652 | case Bytecodes::_multianewarray : |
aoqi@0 | 1653 | { |
aoqi@0 | 1654 | index = bcs.get_index_u2(); |
aoqi@0 | 1655 | u2 dim = *(bcs.bcp()+3); |
aoqi@0 | 1656 | verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
aoqi@0 | 1657 | VerificationType new_array_type = |
aoqi@0 | 1658 | cp_index_to_type(index, cp, CHECK_VERIFY(this)); |
aoqi@0 | 1659 | if (!new_array_type.is_array()) { |
aoqi@0 | 1660 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 1661 | TypeOrigin::cp(index, new_array_type)), |
aoqi@0 | 1662 | "Illegal constant pool index in multianewarray instruction"); |
aoqi@0 | 1663 | return; |
aoqi@0 | 1664 | } |
aoqi@0 | 1665 | if (dim < 1 || new_array_type.dimensions() < dim) { |
aoqi@0 | 1666 | verify_error(ErrorContext::bad_code(bci), |
aoqi@0 | 1667 | "Illegal dimension in multianewarray instruction: %d", dim); |
aoqi@0 | 1668 | return; |
aoqi@0 | 1669 | } |
aoqi@0 | 1670 | for (int i = 0; i < dim; i++) { |
aoqi@0 | 1671 | current_frame.pop_stack( |
aoqi@0 | 1672 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 1673 | } |
aoqi@0 | 1674 | current_frame.push_stack(new_array_type, CHECK_VERIFY(this)); |
aoqi@0 | 1675 | no_control_flow = false; break; |
aoqi@0 | 1676 | } |
aoqi@0 | 1677 | case Bytecodes::_athrow : |
aoqi@0 | 1678 | type = VerificationType::reference_type( |
aoqi@0 | 1679 | vmSymbols::java_lang_Throwable()); |
aoqi@0 | 1680 | current_frame.pop_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 1681 | no_control_flow = true; break; |
aoqi@0 | 1682 | default: |
aoqi@0 | 1683 | // We only need to check the valid bytecodes in class file. |
aoqi@0 | 1684 | // And jsr and ret are not in the new class file format in JDK1.5. |
aoqi@0 | 1685 | verify_error(ErrorContext::bad_code(bci), |
aoqi@0 | 1686 | "Bad instruction: %02x", opcode); |
aoqi@0 | 1687 | no_control_flow = false; |
aoqi@0 | 1688 | return; |
aoqi@0 | 1689 | } // end switch |
aoqi@0 | 1690 | } // end Merge with the next instruction |
aoqi@0 | 1691 | |
hseigel@7666 | 1692 | // Look for possible jump target in exception handlers and see if it matches |
hseigel@7666 | 1693 | // current_frame. Don't do this check if it has already been done (for |
hseigel@7666 | 1694 | // ([a,d,f,i,l]store* opcodes). This check cannot be done earlier because |
hseigel@7666 | 1695 | // opcodes, such as invokespecial, may set the this_uninit flag. |
hseigel@7666 | 1696 | assert(!(verified_exc_handlers && this_uninit), |
hseigel@7666 | 1697 | "Exception handler targets got verified before this_uninit got set"); |
hseigel@7666 | 1698 | if (!verified_exc_handlers && bci >= ex_min && bci < ex_max) { |
aoqi@0 | 1699 | verify_exception_handler_targets( |
aoqi@0 | 1700 | bci, this_uninit, ¤t_frame, &stackmap_table, CHECK_VERIFY(this)); |
aoqi@0 | 1701 | } |
aoqi@0 | 1702 | } // end while |
aoqi@0 | 1703 | |
aoqi@0 | 1704 | // Make sure that control flow does not fall through end of the method |
aoqi@0 | 1705 | if (!no_control_flow) { |
aoqi@0 | 1706 | verify_error(ErrorContext::bad_code(code_length), |
aoqi@0 | 1707 | "Control flow falls through code end"); |
aoqi@0 | 1708 | return; |
aoqi@0 | 1709 | } |
aoqi@0 | 1710 | } |
aoqi@0 | 1711 | |
aoqi@0 | 1712 | #undef bad_type_message |
aoqi@0 | 1713 | |
aoqi@0 | 1714 | char* ClassVerifier::generate_code_data(methodHandle m, u4 code_length, TRAPS) { |
aoqi@0 | 1715 | char* code_data = NEW_RESOURCE_ARRAY(char, code_length); |
aoqi@0 | 1716 | memset(code_data, 0, sizeof(char) * code_length); |
aoqi@0 | 1717 | RawBytecodeStream bcs(m); |
aoqi@0 | 1718 | |
aoqi@0 | 1719 | while (!bcs.is_last_bytecode()) { |
aoqi@0 | 1720 | if (bcs.raw_next() != Bytecodes::_illegal) { |
aoqi@0 | 1721 | int bci = bcs.bci(); |
aoqi@0 | 1722 | if (bcs.raw_code() == Bytecodes::_new) { |
aoqi@0 | 1723 | code_data[bci] = NEW_OFFSET; |
aoqi@0 | 1724 | } else { |
aoqi@0 | 1725 | code_data[bci] = BYTECODE_OFFSET; |
aoqi@0 | 1726 | } |
aoqi@0 | 1727 | } else { |
aoqi@0 | 1728 | verify_error(ErrorContext::bad_code(bcs.bci()), "Bad instruction"); |
aoqi@0 | 1729 | return NULL; |
aoqi@0 | 1730 | } |
aoqi@0 | 1731 | } |
aoqi@0 | 1732 | |
aoqi@0 | 1733 | return code_data; |
aoqi@0 | 1734 | } |
aoqi@0 | 1735 | |
aoqi@0 | 1736 | void ClassVerifier::verify_exception_handler_table(u4 code_length, char* code_data, int& min, int& max, TRAPS) { |
aoqi@0 | 1737 | ExceptionTable exhandlers(_method()); |
aoqi@0 | 1738 | int exlength = exhandlers.length(); |
aoqi@0 | 1739 | constantPoolHandle cp (THREAD, _method->constants()); |
aoqi@0 | 1740 | |
aoqi@0 | 1741 | for(int i = 0; i < exlength; i++) { |
aoqi@0 | 1742 | //reacquire the table in case a GC happened |
aoqi@0 | 1743 | ExceptionTable exhandlers(_method()); |
aoqi@0 | 1744 | u2 start_pc = exhandlers.start_pc(i); |
aoqi@0 | 1745 | u2 end_pc = exhandlers.end_pc(i); |
aoqi@0 | 1746 | u2 handler_pc = exhandlers.handler_pc(i); |
aoqi@0 | 1747 | if (start_pc >= code_length || code_data[start_pc] == 0) { |
aoqi@0 | 1748 | class_format_error("Illegal exception table start_pc %d", start_pc); |
aoqi@0 | 1749 | return; |
aoqi@0 | 1750 | } |
aoqi@0 | 1751 | if (end_pc != code_length) { // special case: end_pc == code_length |
aoqi@0 | 1752 | if (end_pc > code_length || code_data[end_pc] == 0) { |
aoqi@0 | 1753 | class_format_error("Illegal exception table end_pc %d", end_pc); |
aoqi@0 | 1754 | return; |
aoqi@0 | 1755 | } |
aoqi@0 | 1756 | } |
aoqi@0 | 1757 | if (handler_pc >= code_length || code_data[handler_pc] == 0) { |
aoqi@0 | 1758 | class_format_error("Illegal exception table handler_pc %d", handler_pc); |
aoqi@0 | 1759 | return; |
aoqi@0 | 1760 | } |
aoqi@0 | 1761 | int catch_type_index = exhandlers.catch_type_index(i); |
aoqi@0 | 1762 | if (catch_type_index != 0) { |
aoqi@0 | 1763 | VerificationType catch_type = cp_index_to_type( |
aoqi@0 | 1764 | catch_type_index, cp, CHECK_VERIFY(this)); |
aoqi@0 | 1765 | VerificationType throwable = |
aoqi@0 | 1766 | VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
aoqi@0 | 1767 | bool is_subclass = throwable.is_assignable_from( |
aoqi@0 | 1768 | catch_type, this, false, CHECK_VERIFY(this)); |
aoqi@0 | 1769 | if (!is_subclass) { |
aoqi@0 | 1770 | // 4286534: should throw VerifyError according to recent spec change |
aoqi@0 | 1771 | verify_error(ErrorContext::bad_type(handler_pc, |
aoqi@0 | 1772 | TypeOrigin::cp(catch_type_index, catch_type), |
aoqi@0 | 1773 | TypeOrigin::implicit(throwable)), |
aoqi@0 | 1774 | "Catch type is not a subclass " |
aoqi@0 | 1775 | "of Throwable in exception handler %d", handler_pc); |
aoqi@0 | 1776 | return; |
aoqi@0 | 1777 | } |
aoqi@0 | 1778 | } |
aoqi@0 | 1779 | if (start_pc < min) min = start_pc; |
aoqi@0 | 1780 | if (end_pc > max) max = end_pc; |
aoqi@0 | 1781 | } |
aoqi@0 | 1782 | } |
aoqi@0 | 1783 | |
aoqi@0 | 1784 | void ClassVerifier::verify_local_variable_table(u4 code_length, char* code_data, TRAPS) { |
aoqi@0 | 1785 | int localvariable_table_length = _method()->localvariable_table_length(); |
aoqi@0 | 1786 | if (localvariable_table_length > 0) { |
aoqi@0 | 1787 | LocalVariableTableElement* table = _method()->localvariable_table_start(); |
aoqi@0 | 1788 | for (int i = 0; i < localvariable_table_length; i++) { |
aoqi@0 | 1789 | u2 start_bci = table[i].start_bci; |
aoqi@0 | 1790 | u2 length = table[i].length; |
aoqi@0 | 1791 | |
aoqi@0 | 1792 | if (start_bci >= code_length || code_data[start_bci] == 0) { |
aoqi@0 | 1793 | class_format_error( |
aoqi@0 | 1794 | "Illegal local variable table start_pc %d", start_bci); |
aoqi@0 | 1795 | return; |
aoqi@0 | 1796 | } |
aoqi@0 | 1797 | u4 end_bci = (u4)(start_bci + length); |
aoqi@0 | 1798 | if (end_bci != code_length) { |
aoqi@0 | 1799 | if (end_bci >= code_length || code_data[end_bci] == 0) { |
aoqi@0 | 1800 | class_format_error( "Illegal local variable table length %d", length); |
aoqi@0 | 1801 | return; |
aoqi@0 | 1802 | } |
aoqi@0 | 1803 | } |
aoqi@0 | 1804 | } |
aoqi@0 | 1805 | } |
aoqi@0 | 1806 | } |
aoqi@0 | 1807 | |
aoqi@0 | 1808 | u2 ClassVerifier::verify_stackmap_table(u2 stackmap_index, u2 bci, |
aoqi@0 | 1809 | StackMapFrame* current_frame, |
aoqi@0 | 1810 | StackMapTable* stackmap_table, |
aoqi@0 | 1811 | bool no_control_flow, TRAPS) { |
aoqi@0 | 1812 | if (stackmap_index < stackmap_table->get_frame_count()) { |
aoqi@0 | 1813 | u2 this_offset = stackmap_table->get_offset(stackmap_index); |
aoqi@0 | 1814 | if (no_control_flow && this_offset > bci) { |
aoqi@0 | 1815 | verify_error(ErrorContext::missing_stackmap(bci), |
aoqi@0 | 1816 | "Expecting a stack map frame"); |
aoqi@0 | 1817 | return 0; |
aoqi@0 | 1818 | } |
aoqi@0 | 1819 | if (this_offset == bci) { |
aoqi@0 | 1820 | ErrorContext ctx; |
aoqi@0 | 1821 | // See if current stack map can be assigned to the frame in table. |
aoqi@0 | 1822 | // current_frame is the stackmap frame got from the last instruction. |
aoqi@0 | 1823 | // If matched, current_frame will be updated by this method. |
aoqi@0 | 1824 | bool matches = stackmap_table->match_stackmap( |
aoqi@0 | 1825 | current_frame, this_offset, stackmap_index, |
kevinw@8703 | 1826 | !no_control_flow, true, &ctx, CHECK_VERIFY_(this, 0)); |
aoqi@0 | 1827 | if (!matches) { |
aoqi@0 | 1828 | // report type error |
aoqi@0 | 1829 | verify_error(ctx, "Instruction type does not match stack map"); |
aoqi@0 | 1830 | return 0; |
aoqi@0 | 1831 | } |
aoqi@0 | 1832 | stackmap_index++; |
aoqi@0 | 1833 | } else if (this_offset < bci) { |
aoqi@0 | 1834 | // current_offset should have met this_offset. |
aoqi@0 | 1835 | class_format_error("Bad stack map offset %d", this_offset); |
aoqi@0 | 1836 | return 0; |
aoqi@0 | 1837 | } |
aoqi@0 | 1838 | } else if (no_control_flow) { |
aoqi@0 | 1839 | verify_error(ErrorContext::bad_code(bci), "Expecting a stack map frame"); |
aoqi@0 | 1840 | return 0; |
aoqi@0 | 1841 | } |
aoqi@0 | 1842 | return stackmap_index; |
aoqi@0 | 1843 | } |
aoqi@0 | 1844 | |
aoqi@0 | 1845 | void ClassVerifier::verify_exception_handler_targets(u2 bci, bool this_uninit, StackMapFrame* current_frame, |
aoqi@0 | 1846 | StackMapTable* stackmap_table, TRAPS) { |
aoqi@0 | 1847 | constantPoolHandle cp (THREAD, _method->constants()); |
aoqi@0 | 1848 | ExceptionTable exhandlers(_method()); |
aoqi@0 | 1849 | int exlength = exhandlers.length(); |
aoqi@0 | 1850 | for(int i = 0; i < exlength; i++) { |
aoqi@0 | 1851 | //reacquire the table in case a GC happened |
aoqi@0 | 1852 | ExceptionTable exhandlers(_method()); |
aoqi@0 | 1853 | u2 start_pc = exhandlers.start_pc(i); |
aoqi@0 | 1854 | u2 end_pc = exhandlers.end_pc(i); |
aoqi@0 | 1855 | u2 handler_pc = exhandlers.handler_pc(i); |
aoqi@0 | 1856 | int catch_type_index = exhandlers.catch_type_index(i); |
aoqi@0 | 1857 | if(bci >= start_pc && bci < end_pc) { |
aoqi@0 | 1858 | u1 flags = current_frame->flags(); |
aoqi@0 | 1859 | if (this_uninit) { flags |= FLAG_THIS_UNINIT; } |
aoqi@0 | 1860 | StackMapFrame* new_frame = current_frame->frame_in_exception_handler(flags); |
aoqi@0 | 1861 | if (catch_type_index != 0) { |
aoqi@0 | 1862 | // We know that this index refers to a subclass of Throwable |
aoqi@0 | 1863 | VerificationType catch_type = cp_index_to_type( |
aoqi@0 | 1864 | catch_type_index, cp, CHECK_VERIFY(this)); |
aoqi@0 | 1865 | new_frame->push_stack(catch_type, CHECK_VERIFY(this)); |
aoqi@0 | 1866 | } else { |
aoqi@0 | 1867 | VerificationType throwable = |
aoqi@0 | 1868 | VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
aoqi@0 | 1869 | new_frame->push_stack(throwable, CHECK_VERIFY(this)); |
aoqi@0 | 1870 | } |
aoqi@0 | 1871 | ErrorContext ctx; |
aoqi@0 | 1872 | bool matches = stackmap_table->match_stackmap( |
kevinw@8703 | 1873 | new_frame, handler_pc, true, false, &ctx, CHECK_VERIFY(this)); |
aoqi@0 | 1874 | if (!matches) { |
aoqi@0 | 1875 | verify_error(ctx, "Stack map does not match the one at " |
aoqi@0 | 1876 | "exception handler %d", handler_pc); |
aoqi@0 | 1877 | return; |
aoqi@0 | 1878 | } |
aoqi@0 | 1879 | } |
aoqi@0 | 1880 | } |
aoqi@0 | 1881 | } |
aoqi@0 | 1882 | |
aoqi@0 | 1883 | void ClassVerifier::verify_cp_index( |
aoqi@0 | 1884 | u2 bci, constantPoolHandle cp, int index, TRAPS) { |
aoqi@0 | 1885 | int nconstants = cp->length(); |
aoqi@0 | 1886 | if ((index <= 0) || (index >= nconstants)) { |
aoqi@0 | 1887 | verify_error(ErrorContext::bad_cp_index(bci, index), |
aoqi@0 | 1888 | "Illegal constant pool index %d in class %s", |
aoqi@0 | 1889 | index, cp->pool_holder()->external_name()); |
aoqi@0 | 1890 | return; |
aoqi@0 | 1891 | } |
aoqi@0 | 1892 | } |
aoqi@0 | 1893 | |
aoqi@0 | 1894 | void ClassVerifier::verify_cp_type( |
aoqi@0 | 1895 | u2 bci, int index, constantPoolHandle cp, unsigned int types, TRAPS) { |
aoqi@0 | 1896 | |
aoqi@0 | 1897 | // In some situations, bytecode rewriting may occur while we're verifying. |
aoqi@0 | 1898 | // In this case, a constant pool cache exists and some indices refer to that |
aoqi@0 | 1899 | // instead. Be sure we don't pick up such indices by accident. |
aoqi@0 | 1900 | // We must check was_recursively_verified() before we get here. |
aoqi@0 | 1901 | guarantee(cp->cache() == NULL, "not rewritten yet"); |
aoqi@0 | 1902 | |
aoqi@0 | 1903 | verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); |
aoqi@0 | 1904 | unsigned int tag = cp->tag_at(index).value(); |
aoqi@0 | 1905 | if ((types & (1 << tag)) == 0) { |
aoqi@0 | 1906 | verify_error(ErrorContext::bad_cp_index(bci, index), |
aoqi@0 | 1907 | "Illegal type at constant pool entry %d in class %s", |
aoqi@0 | 1908 | index, cp->pool_holder()->external_name()); |
aoqi@0 | 1909 | return; |
aoqi@0 | 1910 | } |
aoqi@0 | 1911 | } |
aoqi@0 | 1912 | |
aoqi@0 | 1913 | void ClassVerifier::verify_cp_class_type( |
aoqi@0 | 1914 | u2 bci, int index, constantPoolHandle cp, TRAPS) { |
aoqi@0 | 1915 | verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); |
aoqi@0 | 1916 | constantTag tag = cp->tag_at(index); |
aoqi@0 | 1917 | if (!tag.is_klass() && !tag.is_unresolved_klass()) { |
aoqi@0 | 1918 | verify_error(ErrorContext::bad_cp_index(bci, index), |
aoqi@0 | 1919 | "Illegal type at constant pool entry %d in class %s", |
aoqi@0 | 1920 | index, cp->pool_holder()->external_name()); |
aoqi@0 | 1921 | return; |
aoqi@0 | 1922 | } |
aoqi@0 | 1923 | } |
aoqi@0 | 1924 | |
aoqi@0 | 1925 | void ClassVerifier::verify_error(ErrorContext ctx, const char* msg, ...) { |
aoqi@0 | 1926 | stringStream ss; |
aoqi@0 | 1927 | |
aoqi@0 | 1928 | ctx.reset_frames(); |
aoqi@0 | 1929 | _exception_type = vmSymbols::java_lang_VerifyError(); |
aoqi@0 | 1930 | _error_context = ctx; |
aoqi@0 | 1931 | va_list va; |
aoqi@0 | 1932 | va_start(va, msg); |
aoqi@0 | 1933 | ss.vprint(msg, va); |
aoqi@0 | 1934 | va_end(va); |
aoqi@0 | 1935 | _message = ss.as_string(); |
aoqi@0 | 1936 | #ifdef ASSERT |
aoqi@0 | 1937 | ResourceMark rm; |
aoqi@0 | 1938 | const char* exception_name = _exception_type->as_C_string(); |
aoqi@0 | 1939 | Exceptions::debug_check_abort(exception_name, NULL); |
aoqi@0 | 1940 | #endif // ndef ASSERT |
aoqi@0 | 1941 | } |
aoqi@0 | 1942 | |
aoqi@0 | 1943 | void ClassVerifier::class_format_error(const char* msg, ...) { |
aoqi@0 | 1944 | stringStream ss; |
aoqi@0 | 1945 | _exception_type = vmSymbols::java_lang_ClassFormatError(); |
aoqi@0 | 1946 | va_list va; |
aoqi@0 | 1947 | va_start(va, msg); |
aoqi@0 | 1948 | ss.vprint(msg, va); |
aoqi@0 | 1949 | va_end(va); |
aoqi@0 | 1950 | if (!_method.is_null()) { |
aoqi@0 | 1951 | ss.print(" in method %s", _method->name_and_sig_as_C_string()); |
aoqi@0 | 1952 | } |
aoqi@0 | 1953 | _message = ss.as_string(); |
aoqi@0 | 1954 | } |
aoqi@0 | 1955 | |
aoqi@0 | 1956 | Klass* ClassVerifier::load_class(Symbol* name, TRAPS) { |
aoqi@0 | 1957 | // Get current loader and protection domain first. |
aoqi@0 | 1958 | oop loader = current_class()->class_loader(); |
aoqi@0 | 1959 | oop protection_domain = current_class()->protection_domain(); |
aoqi@0 | 1960 | |
coleenp@9530 | 1961 | return SystemDictionary::resolve_or_fail( |
aoqi@0 | 1962 | name, Handle(THREAD, loader), Handle(THREAD, protection_domain), |
aoqi@0 | 1963 | true, CHECK_NULL); |
aoqi@0 | 1964 | } |
aoqi@0 | 1965 | |
aoqi@0 | 1966 | bool ClassVerifier::is_protected_access(instanceKlassHandle this_class, |
aoqi@0 | 1967 | Klass* target_class, |
aoqi@0 | 1968 | Symbol* field_name, |
aoqi@0 | 1969 | Symbol* field_sig, |
aoqi@0 | 1970 | bool is_method) { |
aoqi@0 | 1971 | No_Safepoint_Verifier nosafepoint; |
aoqi@0 | 1972 | |
aoqi@0 | 1973 | // If target class isn't a super class of this class, we don't worry about this case |
aoqi@0 | 1974 | if (!this_class->is_subclass_of(target_class)) { |
aoqi@0 | 1975 | return false; |
aoqi@0 | 1976 | } |
aoqi@0 | 1977 | // Check if the specified method or field is protected |
aoqi@0 | 1978 | InstanceKlass* target_instance = InstanceKlass::cast(target_class); |
aoqi@0 | 1979 | fieldDescriptor fd; |
aoqi@0 | 1980 | if (is_method) { |
dbuck@8716 | 1981 | Method* m = target_instance->uncached_lookup_method(field_name, field_sig, Klass::find_overpass); |
aoqi@0 | 1982 | if (m != NULL && m->is_protected()) { |
aoqi@0 | 1983 | if (!this_class->is_same_class_package(m->method_holder())) { |
aoqi@0 | 1984 | return true; |
aoqi@0 | 1985 | } |
aoqi@0 | 1986 | } |
aoqi@0 | 1987 | } else { |
aoqi@0 | 1988 | Klass* member_klass = target_instance->find_field(field_name, field_sig, &fd); |
aoqi@0 | 1989 | if (member_klass != NULL && fd.is_protected()) { |
aoqi@0 | 1990 | if (!this_class->is_same_class_package(member_klass)) { |
aoqi@0 | 1991 | return true; |
aoqi@0 | 1992 | } |
aoqi@0 | 1993 | } |
aoqi@0 | 1994 | } |
aoqi@0 | 1995 | return false; |
aoqi@0 | 1996 | } |
aoqi@0 | 1997 | |
aoqi@0 | 1998 | void ClassVerifier::verify_ldc( |
aoqi@0 | 1999 | int opcode, u2 index, StackMapFrame* current_frame, |
aoqi@0 | 2000 | constantPoolHandle cp, u2 bci, TRAPS) { |
aoqi@0 | 2001 | verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); |
aoqi@0 | 2002 | constantTag tag = cp->tag_at(index); |
aoqi@0 | 2003 | unsigned int types; |
aoqi@0 | 2004 | if (opcode == Bytecodes::_ldc || opcode == Bytecodes::_ldc_w) { |
aoqi@0 | 2005 | if (!tag.is_unresolved_klass()) { |
aoqi@0 | 2006 | types = (1 << JVM_CONSTANT_Integer) | (1 << JVM_CONSTANT_Float) |
aoqi@0 | 2007 | | (1 << JVM_CONSTANT_String) | (1 << JVM_CONSTANT_Class) |
aoqi@0 | 2008 | | (1 << JVM_CONSTANT_MethodHandle) | (1 << JVM_CONSTANT_MethodType); |
aoqi@0 | 2009 | // Note: The class file parser already verified the legality of |
aoqi@0 | 2010 | // MethodHandle and MethodType constants. |
aoqi@0 | 2011 | verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
aoqi@0 | 2012 | } |
aoqi@0 | 2013 | } else { |
aoqi@0 | 2014 | assert(opcode == Bytecodes::_ldc2_w, "must be ldc2_w"); |
aoqi@0 | 2015 | types = (1 << JVM_CONSTANT_Double) | (1 << JVM_CONSTANT_Long); |
aoqi@0 | 2016 | verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
aoqi@0 | 2017 | } |
aoqi@0 | 2018 | if (tag.is_string() && cp->is_pseudo_string_at(index)) { |
aoqi@0 | 2019 | current_frame->push_stack(object_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2020 | } else if (tag.is_string()) { |
aoqi@0 | 2021 | current_frame->push_stack( |
aoqi@0 | 2022 | VerificationType::reference_type( |
aoqi@0 | 2023 | vmSymbols::java_lang_String()), CHECK_VERIFY(this)); |
aoqi@0 | 2024 | } else if (tag.is_klass() || tag.is_unresolved_klass()) { |
aoqi@0 | 2025 | current_frame->push_stack( |
aoqi@0 | 2026 | VerificationType::reference_type( |
aoqi@0 | 2027 | vmSymbols::java_lang_Class()), CHECK_VERIFY(this)); |
aoqi@0 | 2028 | } else if (tag.is_int()) { |
aoqi@0 | 2029 | current_frame->push_stack( |
aoqi@0 | 2030 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2031 | } else if (tag.is_float()) { |
aoqi@0 | 2032 | current_frame->push_stack( |
aoqi@0 | 2033 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2034 | } else if (tag.is_double()) { |
aoqi@0 | 2035 | current_frame->push_stack_2( |
aoqi@0 | 2036 | VerificationType::double_type(), |
aoqi@0 | 2037 | VerificationType::double2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2038 | } else if (tag.is_long()) { |
aoqi@0 | 2039 | current_frame->push_stack_2( |
aoqi@0 | 2040 | VerificationType::long_type(), |
aoqi@0 | 2041 | VerificationType::long2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2042 | } else if (tag.is_method_handle()) { |
aoqi@0 | 2043 | current_frame->push_stack( |
aoqi@0 | 2044 | VerificationType::reference_type( |
aoqi@0 | 2045 | vmSymbols::java_lang_invoke_MethodHandle()), CHECK_VERIFY(this)); |
aoqi@0 | 2046 | } else if (tag.is_method_type()) { |
aoqi@0 | 2047 | current_frame->push_stack( |
aoqi@0 | 2048 | VerificationType::reference_type( |
aoqi@0 | 2049 | vmSymbols::java_lang_invoke_MethodType()), CHECK_VERIFY(this)); |
aoqi@0 | 2050 | } else { |
aoqi@0 | 2051 | /* Unreachable? verify_cp_type has already validated the cp type. */ |
aoqi@0 | 2052 | verify_error( |
aoqi@0 | 2053 | ErrorContext::bad_cp_index(bci, index), "Invalid index in ldc"); |
aoqi@0 | 2054 | return; |
aoqi@0 | 2055 | } |
aoqi@0 | 2056 | } |
aoqi@0 | 2057 | |
aoqi@0 | 2058 | void ClassVerifier::verify_switch( |
aoqi@0 | 2059 | RawBytecodeStream* bcs, u4 code_length, char* code_data, |
aoqi@0 | 2060 | StackMapFrame* current_frame, StackMapTable* stackmap_table, TRAPS) { |
aoqi@0 | 2061 | int bci = bcs->bci(); |
aoqi@0 | 2062 | address bcp = bcs->bcp(); |
aoqi@0 | 2063 | address aligned_bcp = (address) round_to((intptr_t)(bcp + 1), jintSize); |
aoqi@0 | 2064 | |
aoqi@0 | 2065 | if (_klass->major_version() < NONZERO_PADDING_BYTES_IN_SWITCH_MAJOR_VERSION) { |
aoqi@0 | 2066 | // 4639449 & 4647081: padding bytes must be 0 |
aoqi@0 | 2067 | u2 padding_offset = 1; |
aoqi@0 | 2068 | while ((bcp + padding_offset) < aligned_bcp) { |
aoqi@0 | 2069 | if(*(bcp + padding_offset) != 0) { |
aoqi@0 | 2070 | verify_error(ErrorContext::bad_code(bci), |
aoqi@0 | 2071 | "Nonzero padding byte in lookswitch or tableswitch"); |
aoqi@0 | 2072 | return; |
aoqi@0 | 2073 | } |
aoqi@0 | 2074 | padding_offset++; |
aoqi@0 | 2075 | } |
aoqi@0 | 2076 | } |
aoqi@0 | 2077 | |
aoqi@0 | 2078 | int default_offset = (int) Bytes::get_Java_u4(aligned_bcp); |
aoqi@0 | 2079 | int keys, delta; |
aoqi@0 | 2080 | current_frame->pop_stack( |
aoqi@0 | 2081 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2082 | if (bcs->raw_code() == Bytecodes::_tableswitch) { |
aoqi@0 | 2083 | jint low = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize); |
aoqi@0 | 2084 | jint high = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize); |
aoqi@0 | 2085 | if (low > high) { |
aoqi@0 | 2086 | verify_error(ErrorContext::bad_code(bci), |
aoqi@0 | 2087 | "low must be less than or equal to high in tableswitch"); |
aoqi@0 | 2088 | return; |
aoqi@0 | 2089 | } |
aoqi@0 | 2090 | keys = high - low + 1; |
aoqi@0 | 2091 | if (keys < 0) { |
aoqi@0 | 2092 | verify_error(ErrorContext::bad_code(bci), "too many keys in tableswitch"); |
aoqi@0 | 2093 | return; |
aoqi@0 | 2094 | } |
aoqi@0 | 2095 | delta = 1; |
aoqi@0 | 2096 | } else { |
aoqi@0 | 2097 | keys = (int)Bytes::get_Java_u4(aligned_bcp + jintSize); |
aoqi@0 | 2098 | if (keys < 0) { |
aoqi@0 | 2099 | verify_error(ErrorContext::bad_code(bci), |
aoqi@0 | 2100 | "number of keys in lookupswitch less than 0"); |
aoqi@0 | 2101 | return; |
aoqi@0 | 2102 | } |
aoqi@0 | 2103 | delta = 2; |
aoqi@0 | 2104 | // Make sure that the lookupswitch items are sorted |
aoqi@0 | 2105 | for (int i = 0; i < (keys - 1); i++) { |
aoqi@0 | 2106 | jint this_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i)*jintSize); |
aoqi@0 | 2107 | jint next_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i+2)*jintSize); |
aoqi@0 | 2108 | if (this_key >= next_key) { |
aoqi@0 | 2109 | verify_error(ErrorContext::bad_code(bci), |
aoqi@0 | 2110 | "Bad lookupswitch instruction"); |
aoqi@0 | 2111 | return; |
aoqi@0 | 2112 | } |
aoqi@0 | 2113 | } |
aoqi@0 | 2114 | } |
aoqi@0 | 2115 | int target = bci + default_offset; |
aoqi@0 | 2116 | stackmap_table->check_jump_target(current_frame, target, CHECK_VERIFY(this)); |
aoqi@0 | 2117 | for (int i = 0; i < keys; i++) { |
aoqi@0 | 2118 | // Because check_jump_target() may safepoint, the bytecode could have |
aoqi@0 | 2119 | // moved, which means 'aligned_bcp' is no good and needs to be recalculated. |
aoqi@0 | 2120 | aligned_bcp = (address)round_to((intptr_t)(bcs->bcp() + 1), jintSize); |
aoqi@0 | 2121 | target = bci + (jint)Bytes::get_Java_u4(aligned_bcp+(3+i*delta)*jintSize); |
aoqi@0 | 2122 | stackmap_table->check_jump_target( |
aoqi@0 | 2123 | current_frame, target, CHECK_VERIFY(this)); |
aoqi@0 | 2124 | } |
aoqi@0 | 2125 | NOT_PRODUCT(aligned_bcp = NULL); // no longer valid at this point |
aoqi@0 | 2126 | } |
aoqi@0 | 2127 | |
aoqi@0 | 2128 | bool ClassVerifier::name_in_supers( |
aoqi@0 | 2129 | Symbol* ref_name, instanceKlassHandle current) { |
aoqi@0 | 2130 | Klass* super = current->super(); |
aoqi@0 | 2131 | while (super != NULL) { |
aoqi@0 | 2132 | if (super->name() == ref_name) { |
aoqi@0 | 2133 | return true; |
aoqi@0 | 2134 | } |
aoqi@0 | 2135 | super = super->super(); |
aoqi@0 | 2136 | } |
aoqi@0 | 2137 | return false; |
aoqi@0 | 2138 | } |
aoqi@0 | 2139 | |
aoqi@0 | 2140 | void ClassVerifier::verify_field_instructions(RawBytecodeStream* bcs, |
aoqi@0 | 2141 | StackMapFrame* current_frame, |
aoqi@0 | 2142 | constantPoolHandle cp, |
aoqi@0 | 2143 | TRAPS) { |
aoqi@0 | 2144 | u2 index = bcs->get_index_u2(); |
aoqi@0 | 2145 | verify_cp_type(bcs->bci(), index, cp, |
aoqi@0 | 2146 | 1 << JVM_CONSTANT_Fieldref, CHECK_VERIFY(this)); |
aoqi@0 | 2147 | |
aoqi@0 | 2148 | // Get field name and signature |
aoqi@0 | 2149 | Symbol* field_name = cp->name_ref_at(index); |
aoqi@0 | 2150 | Symbol* field_sig = cp->signature_ref_at(index); |
aoqi@0 | 2151 | |
aoqi@0 | 2152 | if (!SignatureVerifier::is_valid_type_signature(field_sig)) { |
aoqi@0 | 2153 | class_format_error( |
aoqi@0 | 2154 | "Invalid signature for field in class %s referenced " |
aoqi@0 | 2155 | "from constant pool index %d", _klass->external_name(), index); |
aoqi@0 | 2156 | return; |
aoqi@0 | 2157 | } |
aoqi@0 | 2158 | |
aoqi@0 | 2159 | // Get referenced class type |
aoqi@0 | 2160 | VerificationType ref_class_type = cp_ref_index_to_type( |
aoqi@0 | 2161 | index, cp, CHECK_VERIFY(this)); |
aoqi@0 | 2162 | if (!ref_class_type.is_object()) { |
aoqi@0 | 2163 | /* Unreachable? Class file parser verifies Fieldref contents */ |
aoqi@0 | 2164 | verify_error(ErrorContext::bad_type(bcs->bci(), |
aoqi@0 | 2165 | TypeOrigin::cp(index, ref_class_type)), |
aoqi@0 | 2166 | "Expecting reference to class in class %s at constant pool index %d", |
aoqi@0 | 2167 | _klass->external_name(), index); |
aoqi@0 | 2168 | return; |
aoqi@0 | 2169 | } |
aoqi@0 | 2170 | VerificationType target_class_type = ref_class_type; |
aoqi@0 | 2171 | |
aoqi@0 | 2172 | assert(sizeof(VerificationType) == sizeof(uintptr_t), |
aoqi@0 | 2173 | "buffer type must match VerificationType size"); |
aoqi@0 | 2174 | uintptr_t field_type_buffer[2]; |
aoqi@0 | 2175 | VerificationType* field_type = (VerificationType*)field_type_buffer; |
aoqi@0 | 2176 | // If we make a VerificationType[2] array directly, the compiler calls |
aoqi@0 | 2177 | // to the c-runtime library to do the allocation instead of just |
aoqi@0 | 2178 | // stack allocating it. Plus it would run constructors. This shows up |
aoqi@0 | 2179 | // in performance profiles. |
aoqi@0 | 2180 | |
aoqi@0 | 2181 | SignatureStream sig_stream(field_sig, false); |
aoqi@0 | 2182 | VerificationType stack_object_type; |
aoqi@0 | 2183 | int n = change_sig_to_verificationType( |
aoqi@0 | 2184 | &sig_stream, field_type, CHECK_VERIFY(this)); |
aoqi@0 | 2185 | u2 bci = bcs->bci(); |
aoqi@0 | 2186 | bool is_assignable; |
aoqi@0 | 2187 | switch (bcs->raw_code()) { |
aoqi@0 | 2188 | case Bytecodes::_getstatic: { |
aoqi@0 | 2189 | for (int i = 0; i < n; i++) { |
aoqi@0 | 2190 | current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); |
aoqi@0 | 2191 | } |
aoqi@0 | 2192 | break; |
aoqi@0 | 2193 | } |
aoqi@0 | 2194 | case Bytecodes::_putstatic: { |
aoqi@0 | 2195 | for (int i = n - 1; i >= 0; i--) { |
aoqi@0 | 2196 | current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); |
aoqi@0 | 2197 | } |
aoqi@0 | 2198 | break; |
aoqi@0 | 2199 | } |
aoqi@0 | 2200 | case Bytecodes::_getfield: { |
aoqi@0 | 2201 | stack_object_type = current_frame->pop_stack( |
aoqi@0 | 2202 | target_class_type, CHECK_VERIFY(this)); |
aoqi@0 | 2203 | for (int i = 0; i < n; i++) { |
aoqi@0 | 2204 | current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); |
aoqi@0 | 2205 | } |
aoqi@0 | 2206 | goto check_protected; |
aoqi@0 | 2207 | } |
aoqi@0 | 2208 | case Bytecodes::_putfield: { |
aoqi@0 | 2209 | for (int i = n - 1; i >= 0; i--) { |
aoqi@0 | 2210 | current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); |
aoqi@0 | 2211 | } |
aoqi@0 | 2212 | stack_object_type = current_frame->pop_stack(CHECK_VERIFY(this)); |
aoqi@0 | 2213 | |
aoqi@0 | 2214 | // The JVMS 2nd edition allows field initialization before the superclass |
aoqi@0 | 2215 | // initializer, if the field is defined within the current class. |
aoqi@0 | 2216 | fieldDescriptor fd; |
aoqi@0 | 2217 | if (stack_object_type == VerificationType::uninitialized_this_type() && |
aoqi@0 | 2218 | target_class_type.equals(current_type()) && |
aoqi@0 | 2219 | _klass->find_local_field(field_name, field_sig, &fd)) { |
aoqi@0 | 2220 | stack_object_type = current_type(); |
aoqi@0 | 2221 | } |
aoqi@0 | 2222 | is_assignable = target_class_type.is_assignable_from( |
aoqi@0 | 2223 | stack_object_type, this, false, CHECK_VERIFY(this)); |
aoqi@0 | 2224 | if (!is_assignable) { |
aoqi@0 | 2225 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 2226 | current_frame->stack_top_ctx(), |
aoqi@0 | 2227 | TypeOrigin::cp(index, target_class_type)), |
aoqi@0 | 2228 | "Bad type on operand stack in putfield"); |
aoqi@0 | 2229 | return; |
aoqi@0 | 2230 | } |
aoqi@0 | 2231 | } |
aoqi@0 | 2232 | check_protected: { |
aoqi@0 | 2233 | if (_this_type == stack_object_type) |
aoqi@0 | 2234 | break; // stack_object_type must be assignable to _current_class_type |
aoqi@0 | 2235 | Symbol* ref_class_name = |
aoqi@0 | 2236 | cp->klass_name_at(cp->klass_ref_index_at(index)); |
aoqi@0 | 2237 | if (!name_in_supers(ref_class_name, current_class())) |
aoqi@0 | 2238 | // stack_object_type must be assignable to _current_class_type since: |
aoqi@0 | 2239 | // 1. stack_object_type must be assignable to ref_class. |
aoqi@0 | 2240 | // 2. ref_class must be _current_class or a subclass of it. It can't |
aoqi@0 | 2241 | // be a superclass of it. See revised JVMS 5.4.4. |
aoqi@0 | 2242 | break; |
aoqi@0 | 2243 | |
aoqi@0 | 2244 | Klass* ref_class_oop = load_class(ref_class_name, CHECK); |
aoqi@0 | 2245 | if (is_protected_access(current_class(), ref_class_oop, field_name, |
aoqi@0 | 2246 | field_sig, false)) { |
aoqi@0 | 2247 | // It's protected access, check if stack object is assignable to |
aoqi@0 | 2248 | // current class. |
aoqi@0 | 2249 | is_assignable = current_type().is_assignable_from( |
aoqi@0 | 2250 | stack_object_type, this, true, CHECK_VERIFY(this)); |
aoqi@0 | 2251 | if (!is_assignable) { |
aoqi@0 | 2252 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 2253 | current_frame->stack_top_ctx(), |
aoqi@0 | 2254 | TypeOrigin::implicit(current_type())), |
aoqi@0 | 2255 | "Bad access to protected data in getfield"); |
aoqi@0 | 2256 | return; |
aoqi@0 | 2257 | } |
aoqi@0 | 2258 | } |
aoqi@0 | 2259 | break; |
aoqi@0 | 2260 | } |
aoqi@0 | 2261 | default: ShouldNotReachHere(); |
aoqi@0 | 2262 | } |
aoqi@0 | 2263 | } |
aoqi@0 | 2264 | |
aoqi@0 | 2265 | // Look at the method's handlers. If the bci is in the handler's try block |
hseigel@7643 | 2266 | // then check if the handler_pc is already on the stack. If not, push it |
hseigel@7643 | 2267 | // unless the handler has already been scanned. |
aoqi@0 | 2268 | void ClassVerifier::push_handlers(ExceptionTable* exhandlers, |
hseigel@7643 | 2269 | GrowableArray<u4>* handler_list, |
aoqi@0 | 2270 | GrowableArray<u4>* handler_stack, |
aoqi@0 | 2271 | u4 bci) { |
aoqi@0 | 2272 | int exlength = exhandlers->length(); |
aoqi@0 | 2273 | for(int x = 0; x < exlength; x++) { |
aoqi@0 | 2274 | if (bci >= exhandlers->start_pc(x) && bci < exhandlers->end_pc(x)) { |
hseigel@7643 | 2275 | u4 exhandler_pc = exhandlers->handler_pc(x); |
hseigel@7643 | 2276 | if (!handler_list->contains(exhandler_pc)) { |
hseigel@7643 | 2277 | handler_stack->append_if_missing(exhandler_pc); |
hseigel@7643 | 2278 | handler_list->append(exhandler_pc); |
hseigel@7643 | 2279 | } |
aoqi@0 | 2280 | } |
aoqi@0 | 2281 | } |
aoqi@0 | 2282 | } |
aoqi@0 | 2283 | |
aoqi@0 | 2284 | // Return TRUE if all code paths starting with start_bc_offset end in |
aoqi@0 | 2285 | // bytecode athrow or loop. |
aoqi@0 | 2286 | bool ClassVerifier::ends_in_athrow(u4 start_bc_offset) { |
aoqi@0 | 2287 | ResourceMark rm; |
aoqi@0 | 2288 | // Create bytecode stream. |
aoqi@0 | 2289 | RawBytecodeStream bcs(method()); |
aoqi@0 | 2290 | u4 code_length = method()->code_size(); |
aoqi@0 | 2291 | bcs.set_start(start_bc_offset); |
aoqi@0 | 2292 | u4 target; |
aoqi@0 | 2293 | // Create stack for storing bytecode start offsets for if* and *switch. |
aoqi@0 | 2294 | GrowableArray<u4>* bci_stack = new GrowableArray<u4>(30); |
aoqi@0 | 2295 | // Create stack for handlers for try blocks containing this handler. |
aoqi@0 | 2296 | GrowableArray<u4>* handler_stack = new GrowableArray<u4>(30); |
hseigel@7643 | 2297 | // Create list of handlers that have been pushed onto the handler_stack |
hseigel@7643 | 2298 | // so that handlers embedded inside of their own TRY blocks only get |
hseigel@7643 | 2299 | // scanned once. |
hseigel@7643 | 2300 | GrowableArray<u4>* handler_list = new GrowableArray<u4>(30); |
aoqi@0 | 2301 | // Create list of visited branch opcodes (goto* and if*). |
aoqi@0 | 2302 | GrowableArray<u4>* visited_branches = new GrowableArray<u4>(30); |
aoqi@0 | 2303 | ExceptionTable exhandlers(_method()); |
aoqi@0 | 2304 | |
aoqi@0 | 2305 | while (true) { |
aoqi@0 | 2306 | if (bcs.is_last_bytecode()) { |
aoqi@0 | 2307 | // if no more starting offsets to parse or if at the end of the |
aoqi@0 | 2308 | // method then return false. |
aoqi@0 | 2309 | if ((bci_stack->is_empty()) || ((u4)bcs.end_bci() == code_length)) |
aoqi@0 | 2310 | return false; |
aoqi@0 | 2311 | // Pop a bytecode starting offset and scan from there. |
aoqi@0 | 2312 | bcs.set_start(bci_stack->pop()); |
aoqi@0 | 2313 | } |
aoqi@0 | 2314 | Bytecodes::Code opcode = bcs.raw_next(); |
aoqi@0 | 2315 | u4 bci = bcs.bci(); |
aoqi@0 | 2316 | |
aoqi@0 | 2317 | // If the bytecode is in a TRY block, push its handlers so they |
aoqi@0 | 2318 | // will get parsed. |
hseigel@7643 | 2319 | push_handlers(&exhandlers, handler_list, handler_stack, bci); |
aoqi@0 | 2320 | |
aoqi@0 | 2321 | switch (opcode) { |
aoqi@0 | 2322 | case Bytecodes::_if_icmpeq: |
aoqi@0 | 2323 | case Bytecodes::_if_icmpne: |
aoqi@0 | 2324 | case Bytecodes::_if_icmplt: |
aoqi@0 | 2325 | case Bytecodes::_if_icmpge: |
aoqi@0 | 2326 | case Bytecodes::_if_icmpgt: |
aoqi@0 | 2327 | case Bytecodes::_if_icmple: |
aoqi@0 | 2328 | case Bytecodes::_ifeq: |
aoqi@0 | 2329 | case Bytecodes::_ifne: |
aoqi@0 | 2330 | case Bytecodes::_iflt: |
aoqi@0 | 2331 | case Bytecodes::_ifge: |
aoqi@0 | 2332 | case Bytecodes::_ifgt: |
aoqi@0 | 2333 | case Bytecodes::_ifle: |
aoqi@0 | 2334 | case Bytecodes::_if_acmpeq: |
aoqi@0 | 2335 | case Bytecodes::_if_acmpne: |
aoqi@0 | 2336 | case Bytecodes::_ifnull: |
aoqi@0 | 2337 | case Bytecodes::_ifnonnull: |
aoqi@0 | 2338 | target = bcs.dest(); |
aoqi@0 | 2339 | if (visited_branches->contains(bci)) { |
shshahma@8525 | 2340 | if (bci_stack->is_empty()) { |
shshahma@8525 | 2341 | if (handler_stack->is_empty()) { |
shshahma@8525 | 2342 | return true; |
shshahma@8525 | 2343 | } else { |
shshahma@8525 | 2344 | // Parse the catch handlers for try blocks containing athrow. |
shshahma@8525 | 2345 | bcs.set_start(handler_stack->pop()); |
shshahma@8525 | 2346 | } |
shshahma@8525 | 2347 | } else { |
shshahma@8525 | 2348 | // Pop a bytecode starting offset and scan from there. |
shshahma@8525 | 2349 | bcs.set_start(bci_stack->pop()); |
shshahma@8525 | 2350 | } |
aoqi@0 | 2351 | } else { |
aoqi@0 | 2352 | if (target > bci) { // forward branch |
aoqi@0 | 2353 | if (target >= code_length) return false; |
aoqi@0 | 2354 | // Push the branch target onto the stack. |
aoqi@0 | 2355 | bci_stack->push(target); |
aoqi@0 | 2356 | // then, scan bytecodes starting with next. |
aoqi@0 | 2357 | bcs.set_start(bcs.next_bci()); |
aoqi@0 | 2358 | } else { // backward branch |
aoqi@0 | 2359 | // Push bytecode offset following backward branch onto the stack. |
aoqi@0 | 2360 | bci_stack->push(bcs.next_bci()); |
aoqi@0 | 2361 | // Check bytecodes starting with branch target. |
aoqi@0 | 2362 | bcs.set_start(target); |
aoqi@0 | 2363 | } |
aoqi@0 | 2364 | // Record target so we don't branch here again. |
aoqi@0 | 2365 | visited_branches->append(bci); |
aoqi@0 | 2366 | } |
aoqi@0 | 2367 | break; |
aoqi@0 | 2368 | |
aoqi@0 | 2369 | case Bytecodes::_goto: |
aoqi@0 | 2370 | case Bytecodes::_goto_w: |
aoqi@0 | 2371 | target = (opcode == Bytecodes::_goto ? bcs.dest() : bcs.dest_w()); |
aoqi@0 | 2372 | if (visited_branches->contains(bci)) { |
shshahma@8525 | 2373 | if (bci_stack->is_empty()) { |
shshahma@8525 | 2374 | if (handler_stack->is_empty()) { |
shshahma@8525 | 2375 | return true; |
shshahma@8525 | 2376 | } else { |
shshahma@8525 | 2377 | // Parse the catch handlers for try blocks containing athrow. |
shshahma@8525 | 2378 | bcs.set_start(handler_stack->pop()); |
shshahma@8525 | 2379 | } |
shshahma@8525 | 2380 | } else { |
shshahma@8525 | 2381 | // Been here before, pop new starting offset from stack. |
shshahma@8525 | 2382 | bcs.set_start(bci_stack->pop()); |
shshahma@8525 | 2383 | } |
aoqi@0 | 2384 | } else { |
aoqi@0 | 2385 | if (target >= code_length) return false; |
aoqi@0 | 2386 | // Continue scanning from the target onward. |
aoqi@0 | 2387 | bcs.set_start(target); |
aoqi@0 | 2388 | // Record target so we don't branch here again. |
aoqi@0 | 2389 | visited_branches->append(bci); |
aoqi@0 | 2390 | } |
aoqi@0 | 2391 | break; |
aoqi@0 | 2392 | |
aoqi@0 | 2393 | // Check that all switch alternatives end in 'athrow' bytecodes. Since it |
aoqi@0 | 2394 | // is difficult to determine where each switch alternative ends, parse |
aoqi@0 | 2395 | // each switch alternative until either hit a 'return', 'athrow', or reach |
aoqi@0 | 2396 | // the end of the method's bytecodes. This is gross but should be okay |
aoqi@0 | 2397 | // because: |
aoqi@0 | 2398 | // 1. tableswitch and lookupswitch byte codes in handlers for ctor explicit |
aoqi@0 | 2399 | // constructor invocations should be rare. |
aoqi@0 | 2400 | // 2. if each switch alternative ends in an athrow then the parsing should be |
aoqi@0 | 2401 | // short. If there is no athrow then it is bogus code, anyway. |
aoqi@0 | 2402 | case Bytecodes::_lookupswitch: |
aoqi@0 | 2403 | case Bytecodes::_tableswitch: |
aoqi@0 | 2404 | { |
aoqi@0 | 2405 | address aligned_bcp = (address) round_to((intptr_t)(bcs.bcp() + 1), jintSize); |
aoqi@0 | 2406 | u4 default_offset = Bytes::get_Java_u4(aligned_bcp) + bci; |
aoqi@0 | 2407 | int keys, delta; |
aoqi@0 | 2408 | if (opcode == Bytecodes::_tableswitch) { |
aoqi@0 | 2409 | jint low = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize); |
aoqi@0 | 2410 | jint high = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize); |
aoqi@0 | 2411 | // This is invalid, but let the regular bytecode verifier |
aoqi@0 | 2412 | // report this because the user will get a better error message. |
aoqi@0 | 2413 | if (low > high) return true; |
aoqi@0 | 2414 | keys = high - low + 1; |
aoqi@0 | 2415 | delta = 1; |
aoqi@0 | 2416 | } else { |
aoqi@0 | 2417 | keys = (int)Bytes::get_Java_u4(aligned_bcp + jintSize); |
aoqi@0 | 2418 | delta = 2; |
aoqi@0 | 2419 | } |
aoqi@0 | 2420 | // Invalid, let the regular bytecode verifier deal with it. |
aoqi@0 | 2421 | if (keys < 0) return true; |
aoqi@0 | 2422 | |
aoqi@0 | 2423 | // Push the offset of the next bytecode onto the stack. |
aoqi@0 | 2424 | bci_stack->push(bcs.next_bci()); |
aoqi@0 | 2425 | |
aoqi@0 | 2426 | // Push the switch alternatives onto the stack. |
aoqi@0 | 2427 | for (int i = 0; i < keys; i++) { |
aoqi@0 | 2428 | u4 target = bci + (jint)Bytes::get_Java_u4(aligned_bcp+(3+i*delta)*jintSize); |
aoqi@0 | 2429 | if (target > code_length) return false; |
aoqi@0 | 2430 | bci_stack->push(target); |
aoqi@0 | 2431 | } |
aoqi@0 | 2432 | |
aoqi@0 | 2433 | // Start bytecode parsing for the switch at the default alternative. |
aoqi@0 | 2434 | if (default_offset > code_length) return false; |
aoqi@0 | 2435 | bcs.set_start(default_offset); |
aoqi@0 | 2436 | break; |
aoqi@0 | 2437 | } |
aoqi@0 | 2438 | |
aoqi@0 | 2439 | case Bytecodes::_return: |
aoqi@0 | 2440 | return false; |
aoqi@0 | 2441 | |
aoqi@0 | 2442 | case Bytecodes::_athrow: |
aoqi@0 | 2443 | { |
aoqi@0 | 2444 | if (bci_stack->is_empty()) { |
aoqi@0 | 2445 | if (handler_stack->is_empty()) { |
aoqi@0 | 2446 | return true; |
aoqi@0 | 2447 | } else { |
aoqi@0 | 2448 | // Parse the catch handlers for try blocks containing athrow. |
aoqi@0 | 2449 | bcs.set_start(handler_stack->pop()); |
aoqi@0 | 2450 | } |
aoqi@0 | 2451 | } else { |
aoqi@0 | 2452 | // Pop a bytecode offset and starting scanning from there. |
aoqi@0 | 2453 | bcs.set_start(bci_stack->pop()); |
aoqi@0 | 2454 | } |
aoqi@0 | 2455 | } |
aoqi@0 | 2456 | break; |
aoqi@0 | 2457 | |
aoqi@0 | 2458 | default: |
aoqi@0 | 2459 | ; |
aoqi@0 | 2460 | } // end switch |
aoqi@0 | 2461 | } // end while loop |
aoqi@0 | 2462 | |
aoqi@0 | 2463 | return false; |
aoqi@0 | 2464 | } |
aoqi@0 | 2465 | |
aoqi@0 | 2466 | void ClassVerifier::verify_invoke_init( |
aoqi@0 | 2467 | RawBytecodeStream* bcs, u2 ref_class_index, VerificationType ref_class_type, |
hseigel@7473 | 2468 | StackMapFrame* current_frame, u4 code_length, bool in_try_block, |
hseigel@7473 | 2469 | bool *this_uninit, constantPoolHandle cp, StackMapTable* stackmap_table, |
hseigel@7473 | 2470 | TRAPS) { |
aoqi@0 | 2471 | u2 bci = bcs->bci(); |
aoqi@0 | 2472 | VerificationType type = current_frame->pop_stack( |
aoqi@0 | 2473 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 2474 | if (type == VerificationType::uninitialized_this_type()) { |
aoqi@0 | 2475 | // The method must be an <init> method of this class or its superclass |
aoqi@0 | 2476 | Klass* superk = current_class()->super(); |
aoqi@0 | 2477 | if (ref_class_type.name() != current_class()->name() && |
aoqi@0 | 2478 | ref_class_type.name() != superk->name()) { |
aoqi@0 | 2479 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 2480 | TypeOrigin::implicit(ref_class_type), |
aoqi@0 | 2481 | TypeOrigin::implicit(current_type())), |
aoqi@0 | 2482 | "Bad <init> method call"); |
aoqi@0 | 2483 | return; |
aoqi@0 | 2484 | } |
aoqi@0 | 2485 | |
hseigel@7473 | 2486 | // If this invokespecial call is done from inside of a TRY block then make |
hseigel@7473 | 2487 | // sure that all catch clause paths end in a throw. Otherwise, this can |
hseigel@7473 | 2488 | // result in returning an incomplete object. |
hseigel@7473 | 2489 | if (in_try_block) { |
hseigel@7473 | 2490 | ExceptionTable exhandlers(_method()); |
hseigel@7473 | 2491 | int exlength = exhandlers.length(); |
hseigel@7473 | 2492 | for(int i = 0; i < exlength; i++) { |
hseigel@7473 | 2493 | u2 start_pc = exhandlers.start_pc(i); |
hseigel@7473 | 2494 | u2 end_pc = exhandlers.end_pc(i); |
aoqi@0 | 2495 | |
hseigel@7473 | 2496 | if (bci >= start_pc && bci < end_pc) { |
hseigel@7473 | 2497 | if (!ends_in_athrow(exhandlers.handler_pc(i))) { |
hseigel@7473 | 2498 | verify_error(ErrorContext::bad_code(bci), |
hseigel@7473 | 2499 | "Bad <init> method call from after the start of a try block"); |
hseigel@7473 | 2500 | return; |
hseigel@7473 | 2501 | } else if (VerboseVerification) { |
hseigel@7473 | 2502 | ResourceMark rm; |
hseigel@7473 | 2503 | tty->print_cr( |
hseigel@7473 | 2504 | "Survived call to ends_in_athrow(): %s", |
hseigel@7473 | 2505 | current_class()->name()->as_C_string()); |
hseigel@7473 | 2506 | } |
aoqi@0 | 2507 | } |
aoqi@0 | 2508 | } |
hseigel@7473 | 2509 | |
hseigel@7473 | 2510 | // Check the exception handler target stackmaps with the locals from the |
hseigel@7473 | 2511 | // incoming stackmap (before initialize_object() changes them to outgoing |
hseigel@7473 | 2512 | // state). |
hseigel@7473 | 2513 | verify_exception_handler_targets(bci, true, current_frame, |
hseigel@7473 | 2514 | stackmap_table, CHECK_VERIFY(this)); |
hseigel@7473 | 2515 | } // in_try_block |
aoqi@0 | 2516 | |
aoqi@0 | 2517 | current_frame->initialize_object(type, current_type()); |
aoqi@0 | 2518 | *this_uninit = true; |
aoqi@0 | 2519 | } else if (type.is_uninitialized()) { |
aoqi@0 | 2520 | u2 new_offset = type.bci(); |
aoqi@0 | 2521 | address new_bcp = bcs->bcp() - bci + new_offset; |
aoqi@0 | 2522 | if (new_offset > (code_length - 3) || (*new_bcp) != Bytecodes::_new) { |
aoqi@0 | 2523 | /* Unreachable? Stack map parsing ensures valid type and new |
aoqi@0 | 2524 | * instructions have a valid BCI. */ |
aoqi@0 | 2525 | verify_error(ErrorContext::bad_code(new_offset), |
aoqi@0 | 2526 | "Expecting new instruction"); |
aoqi@0 | 2527 | return; |
aoqi@0 | 2528 | } |
aoqi@0 | 2529 | u2 new_class_index = Bytes::get_Java_u2(new_bcp + 1); |
aoqi@0 | 2530 | verify_cp_class_type(bci, new_class_index, cp, CHECK_VERIFY(this)); |
aoqi@0 | 2531 | |
aoqi@0 | 2532 | // The method must be an <init> method of the indicated class |
aoqi@0 | 2533 | VerificationType new_class_type = cp_index_to_type( |
aoqi@0 | 2534 | new_class_index, cp, CHECK_VERIFY(this)); |
aoqi@0 | 2535 | if (!new_class_type.equals(ref_class_type)) { |
aoqi@0 | 2536 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 2537 | TypeOrigin::cp(new_class_index, new_class_type), |
aoqi@0 | 2538 | TypeOrigin::cp(ref_class_index, ref_class_type)), |
aoqi@0 | 2539 | "Call to wrong <init> method"); |
aoqi@0 | 2540 | return; |
aoqi@0 | 2541 | } |
aoqi@0 | 2542 | // According to the VM spec, if the referent class is a superclass of the |
aoqi@0 | 2543 | // current class, and is in a different runtime package, and the method is |
aoqi@0 | 2544 | // protected, then the objectref must be the current class or a subclass |
aoqi@0 | 2545 | // of the current class. |
aoqi@0 | 2546 | VerificationType objectref_type = new_class_type; |
aoqi@0 | 2547 | if (name_in_supers(ref_class_type.name(), current_class())) { |
hseigel@7594 | 2548 | Klass* ref_klass = load_class(ref_class_type.name(), CHECK); |
aoqi@0 | 2549 | Method* m = InstanceKlass::cast(ref_klass)->uncached_lookup_method( |
aoqi@0 | 2550 | vmSymbols::object_initializer_name(), |
dbuck@8716 | 2551 | cp->signature_ref_at(bcs->get_index_u2()), Klass::find_overpass); |
aoqi@0 | 2552 | // Do nothing if method is not found. Let resolution detect the error. |
aoqi@0 | 2553 | if (m != NULL) { |
aoqi@0 | 2554 | instanceKlassHandle mh(THREAD, m->method_holder()); |
aoqi@0 | 2555 | if (m->is_protected() && !mh->is_same_class_package(_klass())) { |
aoqi@0 | 2556 | bool assignable = current_type().is_assignable_from( |
aoqi@0 | 2557 | objectref_type, this, true, CHECK_VERIFY(this)); |
aoqi@0 | 2558 | if (!assignable) { |
aoqi@0 | 2559 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 2560 | TypeOrigin::cp(new_class_index, objectref_type), |
aoqi@0 | 2561 | TypeOrigin::implicit(current_type())), |
aoqi@0 | 2562 | "Bad access to protected <init> method"); |
aoqi@0 | 2563 | return; |
aoqi@0 | 2564 | } |
aoqi@0 | 2565 | } |
aoqi@0 | 2566 | } |
aoqi@0 | 2567 | } |
hseigel@7473 | 2568 | // Check the exception handler target stackmaps with the locals from the |
hseigel@7473 | 2569 | // incoming stackmap (before initialize_object() changes them to outgoing |
hseigel@7473 | 2570 | // state). |
hseigel@7473 | 2571 | if (in_try_block) { |
hseigel@7473 | 2572 | verify_exception_handler_targets(bci, *this_uninit, current_frame, |
hseigel@7473 | 2573 | stackmap_table, CHECK_VERIFY(this)); |
hseigel@7473 | 2574 | } |
aoqi@0 | 2575 | current_frame->initialize_object(type, new_class_type); |
aoqi@0 | 2576 | } else { |
aoqi@0 | 2577 | verify_error(ErrorContext::bad_type(bci, current_frame->stack_top_ctx()), |
aoqi@0 | 2578 | "Bad operand type when invoking <init>"); |
aoqi@0 | 2579 | return; |
aoqi@0 | 2580 | } |
aoqi@0 | 2581 | } |
aoqi@0 | 2582 | |
aoqi@0 | 2583 | bool ClassVerifier::is_same_or_direct_interface( |
aoqi@0 | 2584 | instanceKlassHandle klass, |
aoqi@0 | 2585 | VerificationType klass_type, |
aoqi@0 | 2586 | VerificationType ref_class_type) { |
aoqi@0 | 2587 | if (ref_class_type.equals(klass_type)) return true; |
aoqi@0 | 2588 | Array<Klass*>* local_interfaces = klass->local_interfaces(); |
aoqi@0 | 2589 | if (local_interfaces != NULL) { |
aoqi@0 | 2590 | for (int x = 0; x < local_interfaces->length(); x++) { |
aoqi@0 | 2591 | Klass* k = local_interfaces->at(x); |
aoqi@0 | 2592 | assert (k != NULL && k->is_interface(), "invalid interface"); |
aoqi@0 | 2593 | if (ref_class_type.equals(VerificationType::reference_type(k->name()))) { |
aoqi@0 | 2594 | return true; |
aoqi@0 | 2595 | } |
aoqi@0 | 2596 | } |
aoqi@0 | 2597 | } |
aoqi@0 | 2598 | return false; |
aoqi@0 | 2599 | } |
aoqi@0 | 2600 | |
aoqi@0 | 2601 | void ClassVerifier::verify_invoke_instructions( |
aoqi@0 | 2602 | RawBytecodeStream* bcs, u4 code_length, StackMapFrame* current_frame, |
hseigel@7473 | 2603 | bool in_try_block, bool *this_uninit, VerificationType return_type, |
hseigel@7473 | 2604 | constantPoolHandle cp, StackMapTable* stackmap_table, TRAPS) { |
aoqi@0 | 2605 | // Make sure the constant pool item is the right type |
aoqi@0 | 2606 | u2 index = bcs->get_index_u2(); |
aoqi@0 | 2607 | Bytecodes::Code opcode = bcs->raw_code(); |
aoqi@0 | 2608 | unsigned int types; |
aoqi@0 | 2609 | switch (opcode) { |
aoqi@0 | 2610 | case Bytecodes::_invokeinterface: |
aoqi@0 | 2611 | types = 1 << JVM_CONSTANT_InterfaceMethodref; |
aoqi@0 | 2612 | break; |
aoqi@0 | 2613 | case Bytecodes::_invokedynamic: |
aoqi@0 | 2614 | types = 1 << JVM_CONSTANT_InvokeDynamic; |
aoqi@0 | 2615 | break; |
aoqi@0 | 2616 | case Bytecodes::_invokespecial: |
aoqi@0 | 2617 | case Bytecodes::_invokestatic: |
aoqi@0 | 2618 | types = (_klass->major_version() < STATIC_METHOD_IN_INTERFACE_MAJOR_VERSION) ? |
aoqi@0 | 2619 | (1 << JVM_CONSTANT_Methodref) : |
aoqi@0 | 2620 | ((1 << JVM_CONSTANT_InterfaceMethodref) | (1 << JVM_CONSTANT_Methodref)); |
aoqi@0 | 2621 | break; |
aoqi@0 | 2622 | default: |
aoqi@0 | 2623 | types = 1 << JVM_CONSTANT_Methodref; |
aoqi@0 | 2624 | } |
aoqi@0 | 2625 | verify_cp_type(bcs->bci(), index, cp, types, CHECK_VERIFY(this)); |
aoqi@0 | 2626 | |
aoqi@0 | 2627 | // Get method name and signature |
aoqi@0 | 2628 | Symbol* method_name = cp->name_ref_at(index); |
aoqi@0 | 2629 | Symbol* method_sig = cp->signature_ref_at(index); |
aoqi@0 | 2630 | |
aoqi@0 | 2631 | if (!SignatureVerifier::is_valid_method_signature(method_sig)) { |
aoqi@0 | 2632 | class_format_error( |
aoqi@0 | 2633 | "Invalid method signature in class %s referenced " |
aoqi@0 | 2634 | "from constant pool index %d", _klass->external_name(), index); |
aoqi@0 | 2635 | return; |
aoqi@0 | 2636 | } |
aoqi@0 | 2637 | |
aoqi@0 | 2638 | // Get referenced class type |
aoqi@0 | 2639 | VerificationType ref_class_type; |
aoqi@0 | 2640 | if (opcode == Bytecodes::_invokedynamic) { |
aoqi@0 | 2641 | if (!EnableInvokeDynamic || |
aoqi@0 | 2642 | _klass->major_version() < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
aoqi@0 | 2643 | if (!EnableInvokeDynamic) { |
aoqi@0 | 2644 | class_format_error("invokedynamic instructions not enabled in this JVM"); |
aoqi@0 | 2645 | } else { |
aoqi@0 | 2646 | class_format_error("invokedynamic instructions not supported by this class file version (%d), class %s", |
aoqi@0 | 2647 | _klass->major_version(), _klass->external_name()); |
aoqi@0 | 2648 | } |
aoqi@0 | 2649 | return; |
aoqi@0 | 2650 | } |
aoqi@0 | 2651 | } else { |
aoqi@0 | 2652 | ref_class_type = cp_ref_index_to_type(index, cp, CHECK_VERIFY(this)); |
aoqi@0 | 2653 | } |
aoqi@0 | 2654 | |
aoqi@0 | 2655 | // For a small signature length, we just allocate 128 bytes instead |
aoqi@0 | 2656 | // of parsing the signature once to find its size. |
aoqi@0 | 2657 | // -3 is for '(', ')' and return descriptor; multiply by 2 is for |
aoqi@0 | 2658 | // longs/doubles to be consertive. |
aoqi@0 | 2659 | assert(sizeof(VerificationType) == sizeof(uintptr_t), |
aoqi@0 | 2660 | "buffer type must match VerificationType size"); |
aoqi@0 | 2661 | uintptr_t on_stack_sig_types_buffer[128]; |
aoqi@0 | 2662 | // If we make a VerificationType[128] array directly, the compiler calls |
aoqi@0 | 2663 | // to the c-runtime library to do the allocation instead of just |
aoqi@0 | 2664 | // stack allocating it. Plus it would run constructors. This shows up |
aoqi@0 | 2665 | // in performance profiles. |
aoqi@0 | 2666 | |
aoqi@0 | 2667 | VerificationType* sig_types; |
aoqi@0 | 2668 | int size = (method_sig->utf8_length() - 3) * 2; |
aoqi@0 | 2669 | if (size > 128) { |
aoqi@0 | 2670 | // Long and double occupies two slots here. |
aoqi@0 | 2671 | ArgumentSizeComputer size_it(method_sig); |
aoqi@0 | 2672 | size = size_it.size(); |
aoqi@0 | 2673 | sig_types = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, VerificationType, size); |
aoqi@0 | 2674 | } else{ |
aoqi@0 | 2675 | sig_types = (VerificationType*)on_stack_sig_types_buffer; |
aoqi@0 | 2676 | } |
aoqi@0 | 2677 | SignatureStream sig_stream(method_sig); |
aoqi@0 | 2678 | int sig_i = 0; |
aoqi@0 | 2679 | while (!sig_stream.at_return_type()) { |
aoqi@0 | 2680 | sig_i += change_sig_to_verificationType( |
aoqi@0 | 2681 | &sig_stream, &sig_types[sig_i], CHECK_VERIFY(this)); |
aoqi@0 | 2682 | sig_stream.next(); |
aoqi@0 | 2683 | } |
aoqi@0 | 2684 | int nargs = sig_i; |
aoqi@0 | 2685 | |
aoqi@0 | 2686 | #ifdef ASSERT |
aoqi@0 | 2687 | { |
aoqi@0 | 2688 | ArgumentSizeComputer size_it(method_sig); |
aoqi@0 | 2689 | assert(nargs == size_it.size(), "Argument sizes do not match"); |
aoqi@0 | 2690 | assert(nargs <= (method_sig->utf8_length() - 3) * 2, "estimate of max size isn't conservative enough"); |
aoqi@0 | 2691 | } |
aoqi@0 | 2692 | #endif |
aoqi@0 | 2693 | |
aoqi@0 | 2694 | // Check instruction operands |
aoqi@0 | 2695 | u2 bci = bcs->bci(); |
aoqi@0 | 2696 | if (opcode == Bytecodes::_invokeinterface) { |
aoqi@0 | 2697 | address bcp = bcs->bcp(); |
aoqi@0 | 2698 | // 4905268: count operand in invokeinterface should be nargs+1, not nargs. |
aoqi@0 | 2699 | // JSR202 spec: The count operand of an invokeinterface instruction is valid if it is |
aoqi@0 | 2700 | // the difference between the size of the operand stack before and after the instruction |
aoqi@0 | 2701 | // executes. |
aoqi@0 | 2702 | if (*(bcp+3) != (nargs+1)) { |
aoqi@0 | 2703 | verify_error(ErrorContext::bad_code(bci), |
aoqi@0 | 2704 | "Inconsistent args count operand in invokeinterface"); |
aoqi@0 | 2705 | return; |
aoqi@0 | 2706 | } |
aoqi@0 | 2707 | if (*(bcp+4) != 0) { |
aoqi@0 | 2708 | verify_error(ErrorContext::bad_code(bci), |
aoqi@0 | 2709 | "Fourth operand byte of invokeinterface must be zero"); |
aoqi@0 | 2710 | return; |
aoqi@0 | 2711 | } |
aoqi@0 | 2712 | } |
aoqi@0 | 2713 | |
aoqi@0 | 2714 | if (opcode == Bytecodes::_invokedynamic) { |
aoqi@0 | 2715 | address bcp = bcs->bcp(); |
aoqi@0 | 2716 | if (*(bcp+3) != 0 || *(bcp+4) != 0) { |
aoqi@0 | 2717 | verify_error(ErrorContext::bad_code(bci), |
aoqi@0 | 2718 | "Third and fourth operand bytes of invokedynamic must be zero"); |
aoqi@0 | 2719 | return; |
aoqi@0 | 2720 | } |
aoqi@0 | 2721 | } |
aoqi@0 | 2722 | |
aoqi@0 | 2723 | if (method_name->byte_at(0) == '<') { |
aoqi@0 | 2724 | // Make sure <init> can only be invoked by invokespecial |
aoqi@0 | 2725 | if (opcode != Bytecodes::_invokespecial || |
aoqi@0 | 2726 | method_name != vmSymbols::object_initializer_name()) { |
aoqi@0 | 2727 | verify_error(ErrorContext::bad_code(bci), |
aoqi@0 | 2728 | "Illegal call to internal method"); |
aoqi@0 | 2729 | return; |
aoqi@0 | 2730 | } |
aoqi@0 | 2731 | } else if (opcode == Bytecodes::_invokespecial |
aoqi@0 | 2732 | && !is_same_or_direct_interface(current_class(), current_type(), ref_class_type) |
aoqi@0 | 2733 | && !ref_class_type.equals(VerificationType::reference_type( |
aoqi@0 | 2734 | current_class()->super()->name()))) { |
aoqi@0 | 2735 | bool subtype = false; |
aoqi@0 | 2736 | bool have_imr_indirect = cp->tag_at(index).value() == JVM_CONSTANT_InterfaceMethodref; |
aoqi@0 | 2737 | if (!current_class()->is_anonymous()) { |
aoqi@0 | 2738 | subtype = ref_class_type.is_assignable_from( |
aoqi@0 | 2739 | current_type(), this, false, CHECK_VERIFY(this)); |
aoqi@0 | 2740 | } else { |
aoqi@0 | 2741 | VerificationType host_klass_type = |
aoqi@0 | 2742 | VerificationType::reference_type(current_class()->host_klass()->name()); |
aoqi@0 | 2743 | subtype = ref_class_type.is_assignable_from(host_klass_type, this, false, CHECK_VERIFY(this)); |
aoqi@0 | 2744 | |
aoqi@0 | 2745 | // If invokespecial of IMR, need to recheck for same or |
aoqi@0 | 2746 | // direct interface relative to the host class |
aoqi@0 | 2747 | have_imr_indirect = (have_imr_indirect && |
aoqi@0 | 2748 | !is_same_or_direct_interface( |
aoqi@0 | 2749 | InstanceKlass::cast(current_class()->host_klass()), |
aoqi@0 | 2750 | host_klass_type, ref_class_type)); |
aoqi@0 | 2751 | } |
aoqi@0 | 2752 | if (!subtype) { |
aoqi@0 | 2753 | verify_error(ErrorContext::bad_code(bci), |
aoqi@0 | 2754 | "Bad invokespecial instruction: " |
aoqi@0 | 2755 | "current class isn't assignable to reference class."); |
aoqi@0 | 2756 | return; |
aoqi@0 | 2757 | } else if (have_imr_indirect) { |
aoqi@0 | 2758 | verify_error(ErrorContext::bad_code(bci), |
aoqi@0 | 2759 | "Bad invokespecial instruction: " |
aoqi@0 | 2760 | "interface method reference is in an indirect superinterface."); |
aoqi@0 | 2761 | return; |
aoqi@0 | 2762 | } |
aoqi@0 | 2763 | |
aoqi@0 | 2764 | } |
aoqi@0 | 2765 | // Match method descriptor with operand stack |
aoqi@0 | 2766 | for (int i = nargs - 1; i >= 0; i--) { // Run backwards |
aoqi@0 | 2767 | current_frame->pop_stack(sig_types[i], CHECK_VERIFY(this)); |
aoqi@0 | 2768 | } |
aoqi@0 | 2769 | // Check objectref on operand stack |
aoqi@0 | 2770 | if (opcode != Bytecodes::_invokestatic && |
aoqi@0 | 2771 | opcode != Bytecodes::_invokedynamic) { |
aoqi@0 | 2772 | if (method_name == vmSymbols::object_initializer_name()) { // <init> method |
aoqi@0 | 2773 | verify_invoke_init(bcs, index, ref_class_type, current_frame, |
hseigel@7473 | 2774 | code_length, in_try_block, this_uninit, cp, stackmap_table, |
hseigel@7473 | 2775 | CHECK_VERIFY(this)); |
aoqi@0 | 2776 | } else { // other methods |
aoqi@0 | 2777 | // Ensures that target class is assignable to method class. |
aoqi@0 | 2778 | if (opcode == Bytecodes::_invokespecial) { |
aoqi@0 | 2779 | if (!current_class()->is_anonymous()) { |
aoqi@0 | 2780 | current_frame->pop_stack(current_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2781 | } else { |
aoqi@0 | 2782 | // anonymous class invokespecial calls: check if the |
aoqi@0 | 2783 | // objectref is a subtype of the host_klass of the current class |
aoqi@0 | 2784 | // to allow an anonymous class to reference methods in the host_klass |
aoqi@0 | 2785 | VerificationType top = current_frame->pop_stack(CHECK_VERIFY(this)); |
aoqi@0 | 2786 | VerificationType hosttype = |
aoqi@0 | 2787 | VerificationType::reference_type(current_class()->host_klass()->name()); |
aoqi@0 | 2788 | bool subtype = hosttype.is_assignable_from(top, this, false, CHECK_VERIFY(this)); |
aoqi@0 | 2789 | if (!subtype) { |
aoqi@0 | 2790 | verify_error( ErrorContext::bad_type(current_frame->offset(), |
aoqi@0 | 2791 | current_frame->stack_top_ctx(), |
aoqi@0 | 2792 | TypeOrigin::implicit(top)), |
aoqi@0 | 2793 | "Bad type on operand stack"); |
aoqi@0 | 2794 | return; |
aoqi@0 | 2795 | } |
aoqi@0 | 2796 | } |
aoqi@0 | 2797 | } else if (opcode == Bytecodes::_invokevirtual) { |
aoqi@0 | 2798 | VerificationType stack_object_type = |
aoqi@0 | 2799 | current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); |
aoqi@0 | 2800 | if (current_type() != stack_object_type) { |
aoqi@0 | 2801 | assert(cp->cache() == NULL, "not rewritten yet"); |
aoqi@0 | 2802 | Symbol* ref_class_name = |
aoqi@0 | 2803 | cp->klass_name_at(cp->klass_ref_index_at(index)); |
aoqi@0 | 2804 | // See the comments in verify_field_instructions() for |
aoqi@0 | 2805 | // the rationale behind this. |
aoqi@0 | 2806 | if (name_in_supers(ref_class_name, current_class())) { |
aoqi@0 | 2807 | Klass* ref_class = load_class(ref_class_name, CHECK); |
aoqi@0 | 2808 | if (is_protected_access( |
aoqi@0 | 2809 | _klass, ref_class, method_name, method_sig, true)) { |
aoqi@0 | 2810 | // It's protected access, check if stack object is |
aoqi@0 | 2811 | // assignable to current class. |
aoqi@0 | 2812 | bool is_assignable = current_type().is_assignable_from( |
aoqi@0 | 2813 | stack_object_type, this, true, CHECK_VERIFY(this)); |
aoqi@0 | 2814 | if (!is_assignable) { |
aoqi@0 | 2815 | if (ref_class_type.name() == vmSymbols::java_lang_Object() |
aoqi@0 | 2816 | && stack_object_type.is_array() |
aoqi@0 | 2817 | && method_name == vmSymbols::clone_name()) { |
aoqi@0 | 2818 | // Special case: arrays pretend to implement public Object |
aoqi@0 | 2819 | // clone(). |
aoqi@0 | 2820 | } else { |
aoqi@0 | 2821 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 2822 | current_frame->stack_top_ctx(), |
aoqi@0 | 2823 | TypeOrigin::implicit(current_type())), |
aoqi@0 | 2824 | "Bad access to protected data in invokevirtual"); |
aoqi@0 | 2825 | return; |
aoqi@0 | 2826 | } |
aoqi@0 | 2827 | } |
aoqi@0 | 2828 | } |
aoqi@0 | 2829 | } |
aoqi@0 | 2830 | } |
aoqi@0 | 2831 | } else { |
aoqi@0 | 2832 | assert(opcode == Bytecodes::_invokeinterface, "Unexpected opcode encountered"); |
aoqi@0 | 2833 | current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); |
aoqi@0 | 2834 | } |
aoqi@0 | 2835 | } |
aoqi@0 | 2836 | } |
aoqi@0 | 2837 | // Push the result type. |
aoqi@0 | 2838 | if (sig_stream.type() != T_VOID) { |
aoqi@0 | 2839 | if (method_name == vmSymbols::object_initializer_name()) { |
aoqi@0 | 2840 | // <init> method must have a void return type |
aoqi@0 | 2841 | /* Unreachable? Class file parser verifies that methods with '<' have |
aoqi@0 | 2842 | * void return */ |
aoqi@0 | 2843 | verify_error(ErrorContext::bad_code(bci), |
aoqi@0 | 2844 | "Return type must be void in <init> method"); |
aoqi@0 | 2845 | return; |
aoqi@0 | 2846 | } |
aoqi@0 | 2847 | VerificationType return_type[2]; |
aoqi@0 | 2848 | int n = change_sig_to_verificationType( |
aoqi@0 | 2849 | &sig_stream, return_type, CHECK_VERIFY(this)); |
aoqi@0 | 2850 | for (int i = 0; i < n; i++) { |
aoqi@0 | 2851 | current_frame->push_stack(return_type[i], CHECK_VERIFY(this)); // push types backwards |
aoqi@0 | 2852 | } |
aoqi@0 | 2853 | } |
aoqi@0 | 2854 | } |
aoqi@0 | 2855 | |
aoqi@0 | 2856 | VerificationType ClassVerifier::get_newarray_type( |
aoqi@0 | 2857 | u2 index, u2 bci, TRAPS) { |
aoqi@0 | 2858 | const char* from_bt[] = { |
aoqi@0 | 2859 | NULL, NULL, NULL, NULL, "[Z", "[C", "[F", "[D", "[B", "[S", "[I", "[J", |
aoqi@0 | 2860 | }; |
aoqi@0 | 2861 | if (index < T_BOOLEAN || index > T_LONG) { |
aoqi@0 | 2862 | verify_error(ErrorContext::bad_code(bci), "Illegal newarray instruction"); |
aoqi@0 | 2863 | return VerificationType::bogus_type(); |
aoqi@0 | 2864 | } |
aoqi@0 | 2865 | |
aoqi@0 | 2866 | // from_bt[index] contains the array signature which has a length of 2 |
aoqi@0 | 2867 | Symbol* sig = create_temporary_symbol( |
aoqi@0 | 2868 | from_bt[index], 2, CHECK_(VerificationType::bogus_type())); |
aoqi@0 | 2869 | return VerificationType::reference_type(sig); |
aoqi@0 | 2870 | } |
aoqi@0 | 2871 | |
aoqi@0 | 2872 | void ClassVerifier::verify_anewarray( |
aoqi@0 | 2873 | u2 bci, u2 index, constantPoolHandle cp, |
aoqi@0 | 2874 | StackMapFrame* current_frame, TRAPS) { |
aoqi@0 | 2875 | verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
aoqi@0 | 2876 | current_frame->pop_stack( |
aoqi@0 | 2877 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2878 | |
aoqi@0 | 2879 | VerificationType component_type = |
aoqi@0 | 2880 | cp_index_to_type(index, cp, CHECK_VERIFY(this)); |
aoqi@0 | 2881 | int length; |
aoqi@0 | 2882 | char* arr_sig_str; |
aoqi@0 | 2883 | if (component_type.is_array()) { // it's an array |
aoqi@0 | 2884 | const char* component_name = component_type.name()->as_utf8(); |
aoqi@0 | 2885 | // add one dimension to component |
aoqi@0 | 2886 | length = (int)strlen(component_name) + 1; |
aoqi@0 | 2887 | arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); |
aoqi@0 | 2888 | arr_sig_str[0] = '['; |
aoqi@0 | 2889 | strncpy(&arr_sig_str[1], component_name, length - 1); |
aoqi@0 | 2890 | } else { // it's an object or interface |
aoqi@0 | 2891 | const char* component_name = component_type.name()->as_utf8(); |
aoqi@0 | 2892 | // add one dimension to component with 'L' prepended and ';' postpended. |
aoqi@0 | 2893 | length = (int)strlen(component_name) + 3; |
aoqi@0 | 2894 | arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); |
aoqi@0 | 2895 | arr_sig_str[0] = '['; |
aoqi@0 | 2896 | arr_sig_str[1] = 'L'; |
aoqi@0 | 2897 | strncpy(&arr_sig_str[2], component_name, length - 2); |
aoqi@0 | 2898 | arr_sig_str[length - 1] = ';'; |
aoqi@0 | 2899 | } |
aoqi@0 | 2900 | Symbol* arr_sig = create_temporary_symbol( |
aoqi@0 | 2901 | arr_sig_str, length, CHECK_VERIFY(this)); |
aoqi@0 | 2902 | VerificationType new_array_type = VerificationType::reference_type(arr_sig); |
aoqi@0 | 2903 | current_frame->push_stack(new_array_type, CHECK_VERIFY(this)); |
aoqi@0 | 2904 | } |
aoqi@0 | 2905 | |
aoqi@0 | 2906 | void ClassVerifier::verify_iload(u2 index, StackMapFrame* current_frame, TRAPS) { |
aoqi@0 | 2907 | current_frame->get_local( |
aoqi@0 | 2908 | index, VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2909 | current_frame->push_stack( |
aoqi@0 | 2910 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2911 | } |
aoqi@0 | 2912 | |
aoqi@0 | 2913 | void ClassVerifier::verify_lload(u2 index, StackMapFrame* current_frame, TRAPS) { |
aoqi@0 | 2914 | current_frame->get_local_2( |
aoqi@0 | 2915 | index, VerificationType::long_type(), |
aoqi@0 | 2916 | VerificationType::long2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2917 | current_frame->push_stack_2( |
aoqi@0 | 2918 | VerificationType::long_type(), |
aoqi@0 | 2919 | VerificationType::long2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2920 | } |
aoqi@0 | 2921 | |
aoqi@0 | 2922 | void ClassVerifier::verify_fload(u2 index, StackMapFrame* current_frame, TRAPS) { |
aoqi@0 | 2923 | current_frame->get_local( |
aoqi@0 | 2924 | index, VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2925 | current_frame->push_stack( |
aoqi@0 | 2926 | VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2927 | } |
aoqi@0 | 2928 | |
aoqi@0 | 2929 | void ClassVerifier::verify_dload(u2 index, StackMapFrame* current_frame, TRAPS) { |
aoqi@0 | 2930 | current_frame->get_local_2( |
aoqi@0 | 2931 | index, VerificationType::double_type(), |
aoqi@0 | 2932 | VerificationType::double2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2933 | current_frame->push_stack_2( |
aoqi@0 | 2934 | VerificationType::double_type(), |
aoqi@0 | 2935 | VerificationType::double2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2936 | } |
aoqi@0 | 2937 | |
aoqi@0 | 2938 | void ClassVerifier::verify_aload(u2 index, StackMapFrame* current_frame, TRAPS) { |
aoqi@0 | 2939 | VerificationType type = current_frame->get_local( |
aoqi@0 | 2940 | index, VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 2941 | current_frame->push_stack(type, CHECK_VERIFY(this)); |
aoqi@0 | 2942 | } |
aoqi@0 | 2943 | |
aoqi@0 | 2944 | void ClassVerifier::verify_istore(u2 index, StackMapFrame* current_frame, TRAPS) { |
aoqi@0 | 2945 | current_frame->pop_stack( |
aoqi@0 | 2946 | VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2947 | current_frame->set_local( |
aoqi@0 | 2948 | index, VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2949 | } |
aoqi@0 | 2950 | |
aoqi@0 | 2951 | void ClassVerifier::verify_lstore(u2 index, StackMapFrame* current_frame, TRAPS) { |
aoqi@0 | 2952 | current_frame->pop_stack_2( |
aoqi@0 | 2953 | VerificationType::long2_type(), |
aoqi@0 | 2954 | VerificationType::long_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2955 | current_frame->set_local_2( |
aoqi@0 | 2956 | index, VerificationType::long_type(), |
aoqi@0 | 2957 | VerificationType::long2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2958 | } |
aoqi@0 | 2959 | |
aoqi@0 | 2960 | void ClassVerifier::verify_fstore(u2 index, StackMapFrame* current_frame, TRAPS) { |
aoqi@0 | 2961 | current_frame->pop_stack(VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2962 | current_frame->set_local( |
aoqi@0 | 2963 | index, VerificationType::float_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2964 | } |
aoqi@0 | 2965 | |
aoqi@0 | 2966 | void ClassVerifier::verify_dstore(u2 index, StackMapFrame* current_frame, TRAPS) { |
aoqi@0 | 2967 | current_frame->pop_stack_2( |
aoqi@0 | 2968 | VerificationType::double2_type(), |
aoqi@0 | 2969 | VerificationType::double_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2970 | current_frame->set_local_2( |
aoqi@0 | 2971 | index, VerificationType::double_type(), |
aoqi@0 | 2972 | VerificationType::double2_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2973 | } |
aoqi@0 | 2974 | |
aoqi@0 | 2975 | void ClassVerifier::verify_astore(u2 index, StackMapFrame* current_frame, TRAPS) { |
aoqi@0 | 2976 | VerificationType type = current_frame->pop_stack( |
aoqi@0 | 2977 | VerificationType::reference_check(), CHECK_VERIFY(this)); |
aoqi@0 | 2978 | current_frame->set_local(index, type, CHECK_VERIFY(this)); |
aoqi@0 | 2979 | } |
aoqi@0 | 2980 | |
aoqi@0 | 2981 | void ClassVerifier::verify_iinc(u2 index, StackMapFrame* current_frame, TRAPS) { |
aoqi@0 | 2982 | VerificationType type = current_frame->get_local( |
aoqi@0 | 2983 | index, VerificationType::integer_type(), CHECK_VERIFY(this)); |
aoqi@0 | 2984 | current_frame->set_local(index, type, CHECK_VERIFY(this)); |
aoqi@0 | 2985 | } |
aoqi@0 | 2986 | |
aoqi@0 | 2987 | void ClassVerifier::verify_return_value( |
aoqi@0 | 2988 | VerificationType return_type, VerificationType type, u2 bci, |
aoqi@0 | 2989 | StackMapFrame* current_frame, TRAPS) { |
aoqi@0 | 2990 | if (return_type == VerificationType::bogus_type()) { |
aoqi@0 | 2991 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 2992 | current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), |
aoqi@0 | 2993 | "Method expects a return value"); |
aoqi@0 | 2994 | return; |
aoqi@0 | 2995 | } |
aoqi@0 | 2996 | bool match = return_type.is_assignable_from(type, this, false, CHECK_VERIFY(this)); |
aoqi@0 | 2997 | if (!match) { |
aoqi@0 | 2998 | verify_error(ErrorContext::bad_type(bci, |
aoqi@0 | 2999 | current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), |
aoqi@0 | 3000 | "Bad return type"); |
aoqi@0 | 3001 | return; |
aoqi@0 | 3002 | } |
aoqi@0 | 3003 | } |
aoqi@0 | 3004 | |
aoqi@0 | 3005 | // The verifier creates symbols which are substrings of Symbols. |
aoqi@0 | 3006 | // These are stored in the verifier until the end of verification so that |
aoqi@0 | 3007 | // they can be reference counted. |
aoqi@0 | 3008 | Symbol* ClassVerifier::create_temporary_symbol(const Symbol *s, int begin, |
aoqi@0 | 3009 | int end, TRAPS) { |
aoqi@0 | 3010 | Symbol* sym = SymbolTable::new_symbol(s, begin, end, CHECK_NULL); |
aoqi@0 | 3011 | _symbols->push(sym); |
aoqi@0 | 3012 | return sym; |
aoqi@0 | 3013 | } |
aoqi@0 | 3014 | |
aoqi@0 | 3015 | Symbol* ClassVerifier::create_temporary_symbol(const char *s, int length, TRAPS) { |
aoqi@0 | 3016 | Symbol* sym = SymbolTable::new_symbol(s, length, CHECK_NULL); |
aoqi@0 | 3017 | _symbols->push(sym); |
aoqi@0 | 3018 | return sym; |
aoqi@0 | 3019 | } |