Mercurial > hg > truffle
annotate src/share/vm/classfile/verifier.cpp @ 18059:ec8878dc470d
Merge
author | asaha |
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date | Tue, 03 Jun 2014 07:29:16 -0700 |
parents | 54bc75c144b0 d6fcbd1e1075 |
children | b207affc0618 |
rev | line source |
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0 | 1 /* |
17573 | 2 * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classFileStream.hpp" | |
27 #include "classfile/javaClasses.hpp" | |
28 #include "classfile/stackMapTable.hpp" | |
6605 | 29 #include "classfile/stackMapFrame.hpp" |
30 #include "classfile/stackMapTableFormat.hpp" | |
1972 | 31 #include "classfile/systemDictionary.hpp" |
32 #include "classfile/verifier.hpp" | |
33 #include "classfile/vmSymbols.hpp" | |
6605 | 34 #include "interpreter/bytecodes.hpp" |
1972 | 35 #include "interpreter/bytecodeStream.hpp" |
36 #include "memory/oopFactory.hpp" | |
37 #include "memory/resourceArea.hpp" | |
38 #include "oops/instanceKlass.hpp" | |
39 #include "oops/oop.inline.hpp" | |
40 #include "oops/typeArrayOop.hpp" | |
41 #include "prims/jvm.h" | |
42 #include "runtime/fieldDescriptor.hpp" | |
43 #include "runtime/handles.inline.hpp" | |
44 #include "runtime/interfaceSupport.hpp" | |
45 #include "runtime/javaCalls.hpp" | |
46 #include "runtime/orderAccess.hpp" | |
47 #include "runtime/os.hpp" | |
48 #ifdef TARGET_ARCH_x86 | |
49 # include "bytes_x86.hpp" | |
50 #endif | |
51 #ifdef TARGET_ARCH_sparc | |
52 # include "bytes_sparc.hpp" | |
53 #endif | |
54 #ifdef TARGET_ARCH_zero | |
55 # include "bytes_zero.hpp" | |
56 #endif | |
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57 #ifdef TARGET_ARCH_arm |
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58 # include "bytes_arm.hpp" |
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59 #endif |
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60 #ifdef TARGET_ARCH_ppc |
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61 # include "bytes_ppc.hpp" |
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62 #endif |
0 | 63 |
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64 #define NOFAILOVER_MAJOR_VERSION 51 |
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65 #define NONZERO_PADDING_BYTES_IN_SWITCH_MAJOR_VERSION 51 |
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66 #define STATIC_METHOD_IN_INTERFACE_MAJOR_VERSION 52 |
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67 |
0 | 68 // Access to external entry for VerifyClassCodes - old byte code verifier |
69 | |
70 extern "C" { | |
71 typedef jboolean (*verify_byte_codes_fn_t)(JNIEnv *, jclass, char *, jint); | |
72 typedef jboolean (*verify_byte_codes_fn_new_t)(JNIEnv *, jclass, char *, jint, jint); | |
73 } | |
74 | |
75 static void* volatile _verify_byte_codes_fn = NULL; | |
76 | |
77 static volatile jint _is_new_verify_byte_codes_fn = (jint) true; | |
78 | |
79 static void* verify_byte_codes_fn() { | |
80 if (_verify_byte_codes_fn == NULL) { | |
81 void *lib_handle = os::native_java_library(); | |
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82 void *func = os::dll_lookup(lib_handle, "VerifyClassCodesForMajorVersion"); |
0 | 83 OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
84 if (func == NULL) { | |
85 OrderAccess::release_store(&_is_new_verify_byte_codes_fn, false); | |
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86 func = os::dll_lookup(lib_handle, "VerifyClassCodes"); |
0 | 87 OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
88 } | |
89 } | |
90 return (void*)_verify_byte_codes_fn; | |
91 } | |
92 | |
93 | |
94 // Methods in Verifier | |
95 | |
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96 bool Verifier::should_verify_for(oop class_loader, bool should_verify_class) { |
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97 return (class_loader == NULL || !should_verify_class) ? |
0 | 98 BytecodeVerificationLocal : BytecodeVerificationRemote; |
99 } | |
100 | |
101 bool Verifier::relax_verify_for(oop loader) { | |
102 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
103 bool need_verify = | |
104 // verifyAll | |
105 (BytecodeVerificationLocal && BytecodeVerificationRemote) || | |
106 // verifyRemote | |
107 (!BytecodeVerificationLocal && BytecodeVerificationRemote && !trusted); | |
108 return !need_verify; | |
109 } | |
110 | |
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111 bool Verifier::verify(instanceKlassHandle klass, Verifier::Mode mode, bool should_verify_class, TRAPS) { |
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112 HandleMark hm; |
0 | 113 ResourceMark rm(THREAD); |
114 | |
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115 Symbol* exception_name = NULL; |
0 | 116 const size_t message_buffer_len = klass->name()->utf8_length() + 1024; |
117 char* message_buffer = NEW_RESOURCE_ARRAY(char, message_buffer_len); | |
6605 | 118 char* exception_message = message_buffer; |
0 | 119 |
120 const char* klassName = klass->external_name(); | |
6605 | 121 bool can_failover = FailOverToOldVerifier && |
122 klass->major_version() < NOFAILOVER_MAJOR_VERSION; | |
0 | 123 |
124 // If the class should be verified, first see if we can use the split | |
125 // verifier. If not, or if verification fails and FailOverToOldVerifier | |
126 // is set, then call the inference verifier. | |
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127 if (is_eligible_for_verification(klass, should_verify_class)) { |
0 | 128 if (TraceClassInitialization) { |
129 tty->print_cr("Start class verification for: %s", klassName); | |
130 } | |
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131 if (klass->major_version() >= STACKMAP_ATTRIBUTE_MAJOR_VERSION) { |
6605 | 132 ClassVerifier split_verifier(klass, THREAD); |
133 split_verifier.verify_class(THREAD); | |
134 exception_name = split_verifier.result(); | |
135 if (can_failover && !HAS_PENDING_EXCEPTION && | |
0 | 136 (exception_name == vmSymbols::java_lang_VerifyError() || |
137 exception_name == vmSymbols::java_lang_ClassFormatError())) { | |
6605 | 138 if (TraceClassInitialization || VerboseVerification) { |
0 | 139 tty->print_cr( |
140 "Fail over class verification to old verifier for: %s", klassName); | |
141 } | |
142 exception_name = inference_verify( | |
143 klass, message_buffer, message_buffer_len, THREAD); | |
144 } | |
6605 | 145 if (exception_name != NULL) { |
146 exception_message = split_verifier.exception_message(); | |
147 } | |
0 | 148 } else { |
149 exception_name = inference_verify( | |
150 klass, message_buffer, message_buffer_len, THREAD); | |
151 } | |
152 | |
6605 | 153 if (TraceClassInitialization || VerboseVerification) { |
0 | 154 if (HAS_PENDING_EXCEPTION) { |
155 tty->print("Verification for %s has", klassName); | |
156 tty->print_cr(" exception pending %s ", | |
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157 InstanceKlass::cast(PENDING_EXCEPTION->klass())->external_name()); |
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158 } else if (exception_name != NULL) { |
0 | 159 tty->print_cr("Verification for %s failed", klassName); |
160 } | |
161 tty->print_cr("End class verification for: %s", klassName); | |
162 } | |
163 } | |
164 | |
165 if (HAS_PENDING_EXCEPTION) { | |
166 return false; // use the existing exception | |
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167 } else if (exception_name == NULL) { |
0 | 168 return true; // verifcation succeeded |
169 } else { // VerifyError or ClassFormatError to be created and thrown | |
170 ResourceMark rm(THREAD); | |
171 instanceKlassHandle kls = | |
172 SystemDictionary::resolve_or_fail(exception_name, true, CHECK_false); | |
173 while (!kls.is_null()) { | |
174 if (kls == klass) { | |
175 // If the class being verified is the exception we're creating | |
176 // or one of it's superclasses, we're in trouble and are going | |
177 // to infinitely recurse when we try to initialize the exception. | |
178 // So bail out here by throwing the preallocated VM error. | |
179 THROW_OOP_(Universe::virtual_machine_error_instance(), false); | |
180 } | |
181 kls = kls->super(); | |
182 } | |
183 message_buffer[message_buffer_len - 1] = '\0'; // just to be sure | |
6605 | 184 THROW_MSG_(exception_name, exception_message, false); |
0 | 185 } |
186 } | |
187 | |
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188 bool Verifier::is_eligible_for_verification(instanceKlassHandle klass, bool should_verify_class) { |
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189 Symbol* name = klass->name(); |
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190 Klass* refl_magic_klass = SystemDictionary::reflect_MagicAccessorImpl_klass(); |
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191 |
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192 bool is_reflect = refl_magic_klass != NULL && klass->is_subtype_of(refl_magic_klass); |
0 | 193 |
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194 return (should_verify_for(klass->class_loader(), should_verify_class) && |
0 | 195 // return if the class is a bootstrapping class |
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196 // or defineClass specified not to verify by default (flags override passed arg) |
0 | 197 // We need to skip the following four for bootstraping |
198 name != vmSymbols::java_lang_Object() && | |
199 name != vmSymbols::java_lang_Class() && | |
200 name != vmSymbols::java_lang_String() && | |
201 name != vmSymbols::java_lang_Throwable() && | |
202 | |
203 // Can not verify the bytecodes for shared classes because they have | |
204 // already been rewritten to contain constant pool cache indices, | |
205 // which the verifier can't understand. | |
206 // Shared classes shouldn't have stackmaps either. | |
207 !klass()->is_shared() && | |
208 | |
209 // As of the fix for 4486457 we disable verification for all of the | |
210 // dynamically-generated bytecodes associated with the 1.4 | |
211 // reflection implementation, not just those associated with | |
212 // sun/reflect/SerializationConstructorAccessor. | |
213 // NOTE: this is called too early in the bootstrapping process to be | |
214 // guarded by Universe::is_gte_jdk14x_version()/UseNewReflection. | |
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215 // Also for lambda generated code, gte jdk8 |
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216 (!is_reflect || VerifyReflectionBytecodes)); |
0 | 217 } |
218 | |
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219 Symbol* Verifier::inference_verify( |
0 | 220 instanceKlassHandle klass, char* message, size_t message_len, TRAPS) { |
221 JavaThread* thread = (JavaThread*)THREAD; | |
222 JNIEnv *env = thread->jni_environment(); | |
223 | |
224 void* verify_func = verify_byte_codes_fn(); | |
225 | |
226 if (verify_func == NULL) { | |
227 jio_snprintf(message, message_len, "Could not link verifier"); | |
228 return vmSymbols::java_lang_VerifyError(); | |
229 } | |
230 | |
231 ResourceMark rm(THREAD); | |
6605 | 232 if (VerboseVerification) { |
0 | 233 tty->print_cr("Verifying class %s with old format", klass->external_name()); |
234 } | |
235 | |
236 jclass cls = (jclass) JNIHandles::make_local(env, klass->java_mirror()); | |
237 jint result; | |
238 | |
239 { | |
240 HandleMark hm(thread); | |
241 ThreadToNativeFromVM ttn(thread); | |
242 // ThreadToNativeFromVM takes care of changing thread_state, so safepoint | |
243 // code knows that we have left the VM | |
244 | |
245 if (_is_new_verify_byte_codes_fn) { | |
246 verify_byte_codes_fn_new_t func = | |
247 CAST_TO_FN_PTR(verify_byte_codes_fn_new_t, verify_func); | |
248 result = (*func)(env, cls, message, (int)message_len, | |
249 klass->major_version()); | |
250 } else { | |
251 verify_byte_codes_fn_t func = | |
252 CAST_TO_FN_PTR(verify_byte_codes_fn_t, verify_func); | |
253 result = (*func)(env, cls, message, (int)message_len); | |
254 } | |
255 } | |
256 | |
257 JNIHandles::destroy_local(cls); | |
258 | |
259 // These numbers are chosen so that VerifyClassCodes interface doesn't need | |
260 // to be changed (still return jboolean (unsigned char)), and result is | |
261 // 1 when verification is passed. | |
262 if (result == 0) { | |
263 return vmSymbols::java_lang_VerifyError(); | |
264 } else if (result == 1) { | |
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265 return NULL; // verified. |
0 | 266 } else if (result == 2) { |
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267 THROW_MSG_(vmSymbols::java_lang_OutOfMemoryError(), message, NULL); |
0 | 268 } else if (result == 3) { |
269 return vmSymbols::java_lang_ClassFormatError(); | |
270 } else { | |
271 ShouldNotReachHere(); | |
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272 return NULL; |
0 | 273 } |
274 } | |
275 | |
6605 | 276 TypeOrigin TypeOrigin::null() { |
277 return TypeOrigin(); | |
278 } | |
279 TypeOrigin TypeOrigin::local(u2 index, StackMapFrame* frame) { | |
280 assert(frame != NULL, "Must have a frame"); | |
281 return TypeOrigin(CF_LOCALS, index, StackMapFrame::copy(frame), | |
282 frame->local_at(index)); | |
283 } | |
284 TypeOrigin TypeOrigin::stack(u2 index, StackMapFrame* frame) { | |
285 assert(frame != NULL, "Must have a frame"); | |
286 return TypeOrigin(CF_STACK, index, StackMapFrame::copy(frame), | |
287 frame->stack_at(index)); | |
288 } | |
289 TypeOrigin TypeOrigin::sm_local(u2 index, StackMapFrame* frame) { | |
290 assert(frame != NULL, "Must have a frame"); | |
291 return TypeOrigin(SM_LOCALS, index, StackMapFrame::copy(frame), | |
292 frame->local_at(index)); | |
293 } | |
294 TypeOrigin TypeOrigin::sm_stack(u2 index, StackMapFrame* frame) { | |
295 assert(frame != NULL, "Must have a frame"); | |
296 return TypeOrigin(SM_STACK, index, StackMapFrame::copy(frame), | |
297 frame->stack_at(index)); | |
298 } | |
299 TypeOrigin TypeOrigin::bad_index(u2 index) { | |
300 return TypeOrigin(BAD_INDEX, index, NULL, VerificationType::bogus_type()); | |
301 } | |
302 TypeOrigin TypeOrigin::cp(u2 index, VerificationType vt) { | |
303 return TypeOrigin(CONST_POOL, index, NULL, vt); | |
304 } | |
305 TypeOrigin TypeOrigin::signature(VerificationType vt) { | |
306 return TypeOrigin(SIG, 0, NULL, vt); | |
307 } | |
308 TypeOrigin TypeOrigin::implicit(VerificationType t) { | |
309 return TypeOrigin(IMPLICIT, 0, NULL, t); | |
310 } | |
311 TypeOrigin TypeOrigin::frame(StackMapFrame* frame) { | |
312 return TypeOrigin(FRAME_ONLY, 0, StackMapFrame::copy(frame), | |
313 VerificationType::bogus_type()); | |
314 } | |
315 | |
316 void TypeOrigin::reset_frame() { | |
317 if (_frame != NULL) { | |
318 _frame->restore(); | |
319 } | |
320 } | |
321 | |
322 void TypeOrigin::details(outputStream* ss) const { | |
323 _type.print_on(ss); | |
324 switch (_origin) { | |
325 case CF_LOCALS: | |
326 ss->print(" (current frame, locals[%d])", _index); | |
327 break; | |
328 case CF_STACK: | |
329 ss->print(" (current frame, stack[%d])", _index); | |
330 break; | |
331 case SM_LOCALS: | |
332 ss->print(" (stack map, locals[%d])", _index); | |
333 break; | |
334 case SM_STACK: | |
335 ss->print(" (stack map, stack[%d])", _index); | |
336 break; | |
337 case CONST_POOL: | |
338 ss->print(" (constant pool %d)", _index); | |
339 break; | |
340 case SIG: | |
341 ss->print(" (from method signature)"); | |
342 break; | |
343 case IMPLICIT: | |
344 case FRAME_ONLY: | |
345 case NONE: | |
346 default: | |
347 ; | |
348 } | |
349 } | |
350 | |
351 #ifdef ASSERT | |
352 void TypeOrigin::print_on(outputStream* str) const { | |
353 str->print("{%d,%d,%p:", _origin, _index, _frame); | |
354 if (_frame != NULL) { | |
355 _frame->print_on(str); | |
356 } else { | |
357 str->print("null"); | |
358 } | |
359 str->print(","); | |
360 _type.print_on(str); | |
361 str->print("}"); | |
362 } | |
363 #endif | |
364 | |
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365 void ErrorContext::details(outputStream* ss, const Method* method) const { |
6605 | 366 if (is_valid()) { |
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367 ss->cr(); |
6605 | 368 ss->print_cr("Exception Details:"); |
369 location_details(ss, method); | |
370 reason_details(ss); | |
371 frame_details(ss); | |
372 bytecode_details(ss, method); | |
373 handler_details(ss, method); | |
374 stackmap_details(ss, method); | |
375 } | |
376 } | |
377 | |
378 void ErrorContext::reason_details(outputStream* ss) const { | |
379 streamIndentor si(ss); | |
380 ss->indent().print_cr("Reason:"); | |
381 streamIndentor si2(ss); | |
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382 ss->indent().print("%s", ""); |
6605 | 383 switch (_fault) { |
384 case INVALID_BYTECODE: | |
385 ss->print("Error exists in the bytecode"); | |
386 break; | |
387 case WRONG_TYPE: | |
388 if (_expected.is_valid()) { | |
389 ss->print("Type "); | |
390 _type.details(ss); | |
391 ss->print(" is not assignable to "); | |
392 _expected.details(ss); | |
393 } else { | |
394 ss->print("Invalid type: "); | |
395 _type.details(ss); | |
396 } | |
397 break; | |
398 case FLAGS_MISMATCH: | |
399 if (_expected.is_valid()) { | |
400 ss->print("Current frame's flags are not assignable " | |
401 "to stack map frame's."); | |
402 } else { | |
403 ss->print("Current frame's flags are invalid in this context."); | |
404 } | |
405 break; | |
406 case BAD_CP_INDEX: | |
407 ss->print("Constant pool index %d is invalid", _type.index()); | |
408 break; | |
409 case BAD_LOCAL_INDEX: | |
410 ss->print("Local index %d is invalid", _type.index()); | |
411 break; | |
412 case LOCALS_SIZE_MISMATCH: | |
413 ss->print("Current frame's local size doesn't match stackmap."); | |
414 break; | |
415 case STACK_SIZE_MISMATCH: | |
416 ss->print("Current frame's stack size doesn't match stackmap."); | |
417 break; | |
418 case STACK_OVERFLOW: | |
419 ss->print("Exceeded max stack size."); | |
420 break; | |
421 case STACK_UNDERFLOW: | |
422 ss->print("Attempt to pop empty stack."); | |
423 break; | |
424 case MISSING_STACKMAP: | |
425 ss->print("Expected stackmap frame at this location."); | |
426 break; | |
427 case BAD_STACKMAP: | |
428 ss->print("Invalid stackmap specification."); | |
429 break; | |
430 case UNKNOWN: | |
431 default: | |
432 ShouldNotReachHere(); | |
433 ss->print_cr("Unknown"); | |
434 } | |
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435 ss->cr(); |
6605 | 436 } |
437 | |
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438 void ErrorContext::location_details(outputStream* ss, const Method* method) const { |
6605 | 439 if (_bci != -1 && method != NULL) { |
440 streamIndentor si(ss); | |
441 const char* bytecode_name = "<invalid>"; | |
442 if (method->validate_bci_from_bcx(_bci) != -1) { | |
443 Bytecodes::Code code = Bytecodes::code_or_bp_at(method->bcp_from(_bci)); | |
444 if (Bytecodes::is_defined(code)) { | |
445 bytecode_name = Bytecodes::name(code); | |
446 } else { | |
447 bytecode_name = "<illegal>"; | |
448 } | |
449 } | |
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450 InstanceKlass* ik = method->method_holder(); |
6605 | 451 ss->indent().print_cr("Location:"); |
452 streamIndentor si2(ss); | |
453 ss->indent().print_cr("%s.%s%s @%d: %s", | |
454 ik->name()->as_C_string(), method->name()->as_C_string(), | |
455 method->signature()->as_C_string(), _bci, bytecode_name); | |
456 } | |
457 } | |
458 | |
459 void ErrorContext::frame_details(outputStream* ss) const { | |
460 streamIndentor si(ss); | |
461 if (_type.is_valid() && _type.frame() != NULL) { | |
462 ss->indent().print_cr("Current Frame:"); | |
463 streamIndentor si2(ss); | |
464 _type.frame()->print_on(ss); | |
465 } | |
466 if (_expected.is_valid() && _expected.frame() != NULL) { | |
467 ss->indent().print_cr("Stackmap Frame:"); | |
468 streamIndentor si2(ss); | |
469 _expected.frame()->print_on(ss); | |
470 } | |
471 } | |
472 | |
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473 void ErrorContext::bytecode_details(outputStream* ss, const Method* method) const { |
6605 | 474 if (method != NULL) { |
475 streamIndentor si(ss); | |
476 ss->indent().print_cr("Bytecode:"); | |
477 streamIndentor si2(ss); | |
478 ss->print_data(method->code_base(), method->code_size(), false); | |
479 } | |
480 } | |
481 | |
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482 void ErrorContext::handler_details(outputStream* ss, const Method* method) const { |
6605 | 483 if (method != NULL) { |
484 streamIndentor si(ss); | |
485 ExceptionTable table(method); | |
486 if (table.length() > 0) { | |
487 ss->indent().print_cr("Exception Handler Table:"); | |
488 streamIndentor si2(ss); | |
489 for (int i = 0; i < table.length(); ++i) { | |
490 ss->indent().print_cr("bci [%d, %d] => handler: %d", table.start_pc(i), | |
491 table.end_pc(i), table.handler_pc(i)); | |
492 } | |
493 } | |
494 } | |
495 } | |
496 | |
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497 void ErrorContext::stackmap_details(outputStream* ss, const Method* method) const { |
6605 | 498 if (method != NULL && method->has_stackmap_table()) { |
499 streamIndentor si(ss); | |
500 ss->indent().print_cr("Stackmap Table:"); | |
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501 Array<u1>* data = method->stackmap_data(); |
6605 | 502 stack_map_table* sm_table = |
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503 stack_map_table::at((address)data->adr_at(0)); |
6605 | 504 stack_map_frame* sm_frame = sm_table->entries(); |
505 streamIndentor si2(ss); | |
506 int current_offset = -1; | |
507 for (u2 i = 0; i < sm_table->number_of_entries(); ++i) { | |
508 ss->indent(); | |
509 sm_frame->print_on(ss, current_offset); | |
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510 ss->cr(); |
6605 | 511 current_offset += sm_frame->offset_delta(); |
512 sm_frame = sm_frame->next(); | |
513 } | |
514 } | |
515 } | |
516 | |
0 | 517 // Methods in ClassVerifier |
518 | |
519 ClassVerifier::ClassVerifier( | |
6605 | 520 instanceKlassHandle klass, TRAPS) |
521 : _thread(THREAD), _exception_type(NULL), _message(NULL), _klass(klass) { | |
0 | 522 _this_type = VerificationType::reference_type(klass->name()); |
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523 // Create list to hold symbols in reference area. |
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524 _symbols = new GrowableArray<Symbol*>(100, 0, NULL); |
0 | 525 } |
526 | |
527 ClassVerifier::~ClassVerifier() { | |
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528 // Decrement the reference count for any symbols created. |
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529 for (int i = 0; i < _symbols->length(); i++) { |
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530 Symbol* s = _symbols->at(i); |
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531 s->decrement_refcount(); |
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532 } |
0 | 533 } |
534 | |
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535 VerificationType ClassVerifier::object_type() const { |
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536 return VerificationType::reference_type(vmSymbols::java_lang_Object()); |
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537 } |
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538 |
6605 | 539 TypeOrigin ClassVerifier::ref_ctx(const char* sig, TRAPS) { |
540 VerificationType vt = VerificationType::reference_type( | |
541 create_temporary_symbol(sig, (int)strlen(sig), THREAD)); | |
542 return TypeOrigin::implicit(vt); | |
543 } | |
544 | |
0 | 545 void ClassVerifier::verify_class(TRAPS) { |
6605 | 546 if (VerboseVerification) { |
0 | 547 tty->print_cr("Verifying class %s with new format", |
548 _klass->external_name()); | |
549 } | |
550 | |
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551 Array<Method*>* methods = _klass->methods(); |
0 | 552 int num_methods = methods->length(); |
553 | |
554 for (int index = 0; index < num_methods; index++) { | |
1570 | 555 // Check for recursive re-verification before each method. |
556 if (was_recursively_verified()) return; | |
557 | |
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558 Method* m = methods->at(index); |
6934 | 559 if (m->is_native() || m->is_abstract() || m->is_overpass()) { |
0 | 560 // If m is native or abstract, skip it. It is checked in class file |
6934 | 561 // parser that methods do not override a final method. Overpass methods |
562 // are trusted since the VM generates them. | |
0 | 563 continue; |
564 } | |
565 verify_method(methodHandle(THREAD, m), CHECK_VERIFY(this)); | |
566 } | |
1570 | 567 |
6605 | 568 if (VerboseVerification || TraceClassInitialization) { |
1570 | 569 if (was_recursively_verified()) |
570 tty->print_cr("Recursive verification detected for: %s", | |
571 _klass->external_name()); | |
572 } | |
0 | 573 } |
574 | |
575 void ClassVerifier::verify_method(methodHandle m, TRAPS) { | |
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576 HandleMark hm(THREAD); |
0 | 577 _method = m; // initialize _method |
6605 | 578 if (VerboseVerification) { |
0 | 579 tty->print_cr("Verifying method %s", m->name_and_sig_as_C_string()); |
580 } | |
581 | |
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582 // For clang, the only good constant format string is a literal constant format string. |
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583 #define bad_type_msg "Bad type on operand stack in %s" |
0 | 584 |
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585 int32_t max_stack = m->verifier_max_stack(); |
0 | 586 int32_t max_locals = m->max_locals(); |
587 constantPoolHandle cp(THREAD, m->constants()); | |
588 | |
589 if (!SignatureVerifier::is_valid_method_signature(m->signature())) { | |
590 class_format_error("Invalid method signature"); | |
591 return; | |
592 } | |
593 | |
594 // Initial stack map frame: offset is 0, stack is initially empty. | |
595 StackMapFrame current_frame(max_locals, max_stack, this); | |
596 // Set initial locals | |
597 VerificationType return_type = current_frame.set_locals_from_arg( | |
598 m, current_type(), CHECK_VERIFY(this)); | |
599 | |
600 int32_t stackmap_index = 0; // index to the stackmap array | |
601 | |
602 u4 code_length = m->code_size(); | |
603 | |
604 // Scan the bytecode and map each instruction's start offset to a number. | |
605 char* code_data = generate_code_data(m, code_length, CHECK_VERIFY(this)); | |
606 | |
607 int ex_min = code_length; | |
608 int ex_max = -1; | |
609 // Look through each item on the exception table. Each of the fields must refer | |
610 // to a legal instruction. | |
611 verify_exception_handler_table( | |
612 code_length, code_data, ex_min, ex_max, CHECK_VERIFY(this)); | |
613 | |
614 // Look through each entry on the local variable table and make sure | |
615 // its range of code array offsets is valid. (4169817) | |
616 if (m->has_localvariable_table()) { | |
617 verify_local_variable_table(code_length, code_data, CHECK_VERIFY(this)); | |
618 } | |
619 | |
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620 Array<u1>* stackmap_data = m->stackmap_data(); |
0 | 621 StackMapStream stream(stackmap_data); |
622 StackMapReader reader(this, &stream, code_data, code_length, THREAD); | |
623 StackMapTable stackmap_table(&reader, ¤t_frame, max_locals, max_stack, | |
624 code_data, code_length, CHECK_VERIFY(this)); | |
625 | |
6605 | 626 if (VerboseVerification) { |
627 stackmap_table.print_on(tty); | |
0 | 628 } |
629 | |
630 RawBytecodeStream bcs(m); | |
631 | |
632 // Scan the byte code linearly from the start to the end | |
633 bool no_control_flow = false; // Set to true when there is no direct control | |
634 // flow from current instruction to the next | |
635 // instruction in sequence | |
17573 | 636 |
637 set_furthest_jump(0); | |
638 | |
0 | 639 Bytecodes::Code opcode; |
640 while (!bcs.is_last_bytecode()) { | |
1570 | 641 // Check for recursive re-verification before each bytecode. |
642 if (was_recursively_verified()) return; | |
643 | |
0 | 644 opcode = bcs.raw_next(); |
645 u2 bci = bcs.bci(); | |
646 | |
647 // Set current frame's offset to bci | |
648 current_frame.set_offset(bci); | |
6605 | 649 current_frame.set_mark(); |
0 | 650 |
651 // Make sure every offset in stackmap table point to the beginning to | |
652 // an instruction. Match current_frame to stackmap_table entry with | |
653 // the same offset if exists. | |
654 stackmap_index = verify_stackmap_table( | |
655 stackmap_index, bci, ¤t_frame, &stackmap_table, | |
656 no_control_flow, CHECK_VERIFY(this)); | |
657 | |
6605 | 658 |
0 | 659 bool this_uninit = false; // Set to true when invokespecial <init> initialized 'this' |
660 | |
661 // Merge with the next instruction | |
662 { | |
663 u2 index; | |
664 int target; | |
665 VerificationType type, type2; | |
666 VerificationType atype; | |
667 | |
668 #ifndef PRODUCT | |
6605 | 669 if (VerboseVerification) { |
670 current_frame.print_on(tty); | |
0 | 671 tty->print_cr("offset = %d, opcode = %s", bci, Bytecodes::name(opcode)); |
672 } | |
673 #endif | |
674 | |
675 // Make sure wide instruction is in correct format | |
676 if (bcs.is_wide()) { | |
677 if (opcode != Bytecodes::_iinc && opcode != Bytecodes::_iload && | |
678 opcode != Bytecodes::_aload && opcode != Bytecodes::_lload && | |
679 opcode != Bytecodes::_istore && opcode != Bytecodes::_astore && | |
680 opcode != Bytecodes::_lstore && opcode != Bytecodes::_fload && | |
681 opcode != Bytecodes::_dload && opcode != Bytecodes::_fstore && | |
682 opcode != Bytecodes::_dstore) { | |
6605 | 683 /* Unreachable? RawBytecodeStream's raw_next() returns 'illegal' |
684 * if we encounter a wide instruction that modifies an invalid | |
685 * opcode (not one of the ones listed above) */ | |
686 verify_error(ErrorContext::bad_code(bci), "Bad wide instruction"); | |
0 | 687 return; |
688 } | |
689 } | |
690 | |
691 switch (opcode) { | |
692 case Bytecodes::_nop : | |
693 no_control_flow = false; break; | |
694 case Bytecodes::_aconst_null : | |
695 current_frame.push_stack( | |
696 VerificationType::null_type(), CHECK_VERIFY(this)); | |
697 no_control_flow = false; break; | |
698 case Bytecodes::_iconst_m1 : | |
699 case Bytecodes::_iconst_0 : | |
700 case Bytecodes::_iconst_1 : | |
701 case Bytecodes::_iconst_2 : | |
702 case Bytecodes::_iconst_3 : | |
703 case Bytecodes::_iconst_4 : | |
704 case Bytecodes::_iconst_5 : | |
705 current_frame.push_stack( | |
706 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
707 no_control_flow = false; break; | |
708 case Bytecodes::_lconst_0 : | |
709 case Bytecodes::_lconst_1 : | |
710 current_frame.push_stack_2( | |
711 VerificationType::long_type(), | |
712 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
713 no_control_flow = false; break; | |
714 case Bytecodes::_fconst_0 : | |
715 case Bytecodes::_fconst_1 : | |
716 case Bytecodes::_fconst_2 : | |
717 current_frame.push_stack( | |
718 VerificationType::float_type(), CHECK_VERIFY(this)); | |
719 no_control_flow = false; break; | |
720 case Bytecodes::_dconst_0 : | |
721 case Bytecodes::_dconst_1 : | |
722 current_frame.push_stack_2( | |
723 VerificationType::double_type(), | |
724 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
725 no_control_flow = false; break; | |
726 case Bytecodes::_sipush : | |
727 case Bytecodes::_bipush : | |
728 current_frame.push_stack( | |
729 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
730 no_control_flow = false; break; | |
731 case Bytecodes::_ldc : | |
732 verify_ldc( | |
1565 | 733 opcode, bcs.get_index_u1(), ¤t_frame, |
0 | 734 cp, bci, CHECK_VERIFY(this)); |
735 no_control_flow = false; break; | |
736 case Bytecodes::_ldc_w : | |
737 case Bytecodes::_ldc2_w : | |
738 verify_ldc( | |
1565 | 739 opcode, bcs.get_index_u2(), ¤t_frame, |
0 | 740 cp, bci, CHECK_VERIFY(this)); |
741 no_control_flow = false; break; | |
742 case Bytecodes::_iload : | |
743 verify_iload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
744 no_control_flow = false; break; | |
745 case Bytecodes::_iload_0 : | |
746 case Bytecodes::_iload_1 : | |
747 case Bytecodes::_iload_2 : | |
748 case Bytecodes::_iload_3 : | |
749 index = opcode - Bytecodes::_iload_0; | |
750 verify_iload(index, ¤t_frame, CHECK_VERIFY(this)); | |
751 no_control_flow = false; break; | |
752 case Bytecodes::_lload : | |
753 verify_lload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
754 no_control_flow = false; break; | |
755 case Bytecodes::_lload_0 : | |
756 case Bytecodes::_lload_1 : | |
757 case Bytecodes::_lload_2 : | |
758 case Bytecodes::_lload_3 : | |
759 index = opcode - Bytecodes::_lload_0; | |
760 verify_lload(index, ¤t_frame, CHECK_VERIFY(this)); | |
761 no_control_flow = false; break; | |
762 case Bytecodes::_fload : | |
763 verify_fload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
764 no_control_flow = false; break; | |
765 case Bytecodes::_fload_0 : | |
766 case Bytecodes::_fload_1 : | |
767 case Bytecodes::_fload_2 : | |
768 case Bytecodes::_fload_3 : | |
769 index = opcode - Bytecodes::_fload_0; | |
770 verify_fload(index, ¤t_frame, CHECK_VERIFY(this)); | |
771 no_control_flow = false; break; | |
772 case Bytecodes::_dload : | |
773 verify_dload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
774 no_control_flow = false; break; | |
775 case Bytecodes::_dload_0 : | |
776 case Bytecodes::_dload_1 : | |
777 case Bytecodes::_dload_2 : | |
778 case Bytecodes::_dload_3 : | |
779 index = opcode - Bytecodes::_dload_0; | |
780 verify_dload(index, ¤t_frame, CHECK_VERIFY(this)); | |
781 no_control_flow = false; break; | |
782 case Bytecodes::_aload : | |
783 verify_aload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
784 no_control_flow = false; break; | |
785 case Bytecodes::_aload_0 : | |
786 case Bytecodes::_aload_1 : | |
787 case Bytecodes::_aload_2 : | |
788 case Bytecodes::_aload_3 : | |
789 index = opcode - Bytecodes::_aload_0; | |
790 verify_aload(index, ¤t_frame, CHECK_VERIFY(this)); | |
791 no_control_flow = false; break; | |
792 case Bytecodes::_iaload : | |
793 type = current_frame.pop_stack( | |
794 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
795 atype = current_frame.pop_stack( | |
796 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
797 if (!atype.is_int_array()) { | |
6605 | 798 verify_error(ErrorContext::bad_type(bci, |
799 current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), | |
800 bad_type_msg, "iaload"); | |
0 | 801 return; |
802 } | |
803 current_frame.push_stack( | |
804 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
805 no_control_flow = false; break; | |
806 case Bytecodes::_baload : | |
807 type = current_frame.pop_stack( | |
808 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
809 atype = current_frame.pop_stack( | |
810 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
811 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
6605 | 812 verify_error( |
813 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
814 bad_type_msg, "baload"); | |
0 | 815 return; |
816 } | |
817 current_frame.push_stack( | |
818 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
819 no_control_flow = false; break; | |
820 case Bytecodes::_caload : | |
821 type = current_frame.pop_stack( | |
822 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
823 atype = current_frame.pop_stack( | |
824 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
825 if (!atype.is_char_array()) { | |
6605 | 826 verify_error(ErrorContext::bad_type(bci, |
827 current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), | |
828 bad_type_msg, "caload"); | |
0 | 829 return; |
830 } | |
831 current_frame.push_stack( | |
832 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
833 no_control_flow = false; break; | |
834 case Bytecodes::_saload : | |
835 type = current_frame.pop_stack( | |
836 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
837 atype = current_frame.pop_stack( | |
838 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
839 if (!atype.is_short_array()) { | |
6605 | 840 verify_error(ErrorContext::bad_type(bci, |
841 current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), | |
842 bad_type_msg, "saload"); | |
0 | 843 return; |
844 } | |
845 current_frame.push_stack( | |
846 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
847 no_control_flow = false; break; | |
848 case Bytecodes::_laload : | |
849 type = current_frame.pop_stack( | |
850 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
851 atype = current_frame.pop_stack( | |
852 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
853 if (!atype.is_long_array()) { | |
6605 | 854 verify_error(ErrorContext::bad_type(bci, |
855 current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), | |
856 bad_type_msg, "laload"); | |
0 | 857 return; |
858 } | |
859 current_frame.push_stack_2( | |
860 VerificationType::long_type(), | |
861 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
862 no_control_flow = false; break; | |
863 case Bytecodes::_faload : | |
864 type = current_frame.pop_stack( | |
865 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
866 atype = current_frame.pop_stack( | |
867 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
868 if (!atype.is_float_array()) { | |
6605 | 869 verify_error(ErrorContext::bad_type(bci, |
870 current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), | |
871 bad_type_msg, "faload"); | |
0 | 872 return; |
873 } | |
874 current_frame.push_stack( | |
875 VerificationType::float_type(), CHECK_VERIFY(this)); | |
876 no_control_flow = false; break; | |
877 case Bytecodes::_daload : | |
878 type = current_frame.pop_stack( | |
879 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
880 atype = current_frame.pop_stack( | |
881 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
882 if (!atype.is_double_array()) { | |
6605 | 883 verify_error(ErrorContext::bad_type(bci, |
884 current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), | |
885 bad_type_msg, "daload"); | |
0 | 886 return; |
887 } | |
888 current_frame.push_stack_2( | |
889 VerificationType::double_type(), | |
890 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
891 no_control_flow = false; break; | |
892 case Bytecodes::_aaload : { | |
893 type = current_frame.pop_stack( | |
894 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
895 atype = current_frame.pop_stack( | |
896 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
897 if (!atype.is_reference_array()) { | |
6605 | 898 verify_error(ErrorContext::bad_type(bci, |
899 current_frame.stack_top_ctx(), | |
900 TypeOrigin::implicit(VerificationType::reference_check())), | |
901 bad_type_msg, "aaload"); | |
0 | 902 return; |
903 } | |
904 if (atype.is_null()) { | |
905 current_frame.push_stack( | |
906 VerificationType::null_type(), CHECK_VERIFY(this)); | |
907 } else { | |
908 VerificationType component = | |
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909 atype.get_component(this, CHECK_VERIFY(this)); |
0 | 910 current_frame.push_stack(component, CHECK_VERIFY(this)); |
911 } | |
912 no_control_flow = false; break; | |
913 } | |
914 case Bytecodes::_istore : | |
915 verify_istore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
916 no_control_flow = false; break; | |
917 case Bytecodes::_istore_0 : | |
918 case Bytecodes::_istore_1 : | |
919 case Bytecodes::_istore_2 : | |
920 case Bytecodes::_istore_3 : | |
921 index = opcode - Bytecodes::_istore_0; | |
922 verify_istore(index, ¤t_frame, CHECK_VERIFY(this)); | |
923 no_control_flow = false; break; | |
924 case Bytecodes::_lstore : | |
925 verify_lstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
926 no_control_flow = false; break; | |
927 case Bytecodes::_lstore_0 : | |
928 case Bytecodes::_lstore_1 : | |
929 case Bytecodes::_lstore_2 : | |
930 case Bytecodes::_lstore_3 : | |
931 index = opcode - Bytecodes::_lstore_0; | |
932 verify_lstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
933 no_control_flow = false; break; | |
934 case Bytecodes::_fstore : | |
935 verify_fstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
936 no_control_flow = false; break; | |
937 case Bytecodes::_fstore_0 : | |
938 case Bytecodes::_fstore_1 : | |
939 case Bytecodes::_fstore_2 : | |
940 case Bytecodes::_fstore_3 : | |
941 index = opcode - Bytecodes::_fstore_0; | |
942 verify_fstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
943 no_control_flow = false; break; | |
944 case Bytecodes::_dstore : | |
945 verify_dstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
946 no_control_flow = false; break; | |
947 case Bytecodes::_dstore_0 : | |
948 case Bytecodes::_dstore_1 : | |
949 case Bytecodes::_dstore_2 : | |
950 case Bytecodes::_dstore_3 : | |
951 index = opcode - Bytecodes::_dstore_0; | |
952 verify_dstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
953 no_control_flow = false; break; | |
954 case Bytecodes::_astore : | |
955 verify_astore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
956 no_control_flow = false; break; | |
957 case Bytecodes::_astore_0 : | |
958 case Bytecodes::_astore_1 : | |
959 case Bytecodes::_astore_2 : | |
960 case Bytecodes::_astore_3 : | |
961 index = opcode - Bytecodes::_astore_0; | |
962 verify_astore(index, ¤t_frame, CHECK_VERIFY(this)); | |
963 no_control_flow = false; break; | |
964 case Bytecodes::_iastore : | |
965 type = current_frame.pop_stack( | |
966 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
967 type2 = current_frame.pop_stack( | |
968 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
969 atype = current_frame.pop_stack( | |
970 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
971 if (!atype.is_int_array()) { | |
6605 | 972 verify_error(ErrorContext::bad_type(bci, |
973 current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), | |
974 bad_type_msg, "iastore"); | |
0 | 975 return; |
976 } | |
977 no_control_flow = false; break; | |
978 case Bytecodes::_bastore : | |
979 type = current_frame.pop_stack( | |
980 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
981 type2 = current_frame.pop_stack( | |
982 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
983 atype = current_frame.pop_stack( | |
984 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
985 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
6605 | 986 verify_error( |
987 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
988 bad_type_msg, "bastore"); | |
0 | 989 return; |
990 } | |
991 no_control_flow = false; break; | |
992 case Bytecodes::_castore : | |
993 current_frame.pop_stack( | |
994 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
995 current_frame.pop_stack( | |
996 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
997 atype = current_frame.pop_stack( | |
998 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
999 if (!atype.is_char_array()) { | |
6605 | 1000 verify_error(ErrorContext::bad_type(bci, |
1001 current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), | |
1002 bad_type_msg, "castore"); | |
0 | 1003 return; |
1004 } | |
1005 no_control_flow = false; break; | |
1006 case Bytecodes::_sastore : | |
1007 current_frame.pop_stack( | |
1008 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1009 current_frame.pop_stack( | |
1010 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1011 atype = current_frame.pop_stack( | |
1012 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1013 if (!atype.is_short_array()) { | |
6605 | 1014 verify_error(ErrorContext::bad_type(bci, |
1015 current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), | |
1016 bad_type_msg, "sastore"); | |
0 | 1017 return; |
1018 } | |
1019 no_control_flow = false; break; | |
1020 case Bytecodes::_lastore : | |
1021 current_frame.pop_stack_2( | |
1022 VerificationType::long2_type(), | |
1023 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1024 current_frame.pop_stack( | |
1025 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1026 atype = current_frame.pop_stack( | |
1027 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1028 if (!atype.is_long_array()) { | |
6605 | 1029 verify_error(ErrorContext::bad_type(bci, |
1030 current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), | |
1031 bad_type_msg, "lastore"); | |
0 | 1032 return; |
1033 } | |
1034 no_control_flow = false; break; | |
1035 case Bytecodes::_fastore : | |
1036 current_frame.pop_stack( | |
1037 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1038 current_frame.pop_stack | |
1039 (VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1040 atype = current_frame.pop_stack( | |
1041 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1042 if (!atype.is_float_array()) { | |
6605 | 1043 verify_error(ErrorContext::bad_type(bci, |
1044 current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), | |
1045 bad_type_msg, "fastore"); | |
0 | 1046 return; |
1047 } | |
1048 no_control_flow = false; break; | |
1049 case Bytecodes::_dastore : | |
1050 current_frame.pop_stack_2( | |
1051 VerificationType::double2_type(), | |
1052 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1053 current_frame.pop_stack( | |
1054 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1055 atype = current_frame.pop_stack( | |
1056 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1057 if (!atype.is_double_array()) { | |
6605 | 1058 verify_error(ErrorContext::bad_type(bci, |
1059 current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), | |
1060 bad_type_msg, "dastore"); | |
0 | 1061 return; |
1062 } | |
1063 no_control_flow = false; break; | |
1064 case Bytecodes::_aastore : | |
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1065 type = current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
0 | 1066 type2 = current_frame.pop_stack( |
1067 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1068 atype = current_frame.pop_stack( | |
1069 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1070 // more type-checking is done at runtime | |
1071 if (!atype.is_reference_array()) { | |
6605 | 1072 verify_error(ErrorContext::bad_type(bci, |
1073 current_frame.stack_top_ctx(), | |
1074 TypeOrigin::implicit(VerificationType::reference_check())), | |
1075 bad_type_msg, "aastore"); | |
0 | 1076 return; |
1077 } | |
1078 // 4938384: relaxed constraint in JVMS 3nd edition. | |
1079 no_control_flow = false; break; | |
1080 case Bytecodes::_pop : | |
1081 current_frame.pop_stack( | |
1082 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1083 no_control_flow = false; break; | |
1084 case Bytecodes::_pop2 : | |
1085 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1086 if (type.is_category1()) { | |
1087 current_frame.pop_stack( | |
1088 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1089 } else if (type.is_category2_2nd()) { | |
1090 current_frame.pop_stack( | |
1091 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
1092 } else { | |
6605 | 1093 /* Unreachable? Would need a category2_1st on TOS |
1094 * which does not appear possible. */ | |
1095 verify_error( | |
1096 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
1097 bad_type_msg, "pop2"); | |
0 | 1098 return; |
1099 } | |
1100 no_control_flow = false; break; | |
1101 case Bytecodes::_dup : | |
1102 type = current_frame.pop_stack( | |
1103 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1104 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1105 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1106 no_control_flow = false; break; | |
1107 case Bytecodes::_dup_x1 : | |
1108 type = current_frame.pop_stack( | |
1109 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1110 type2 = current_frame.pop_stack( | |
1111 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1112 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1113 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1114 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1115 no_control_flow = false; break; | |
1116 case Bytecodes::_dup_x2 : | |
1117 { | |
1118 VerificationType type3; | |
1119 type = current_frame.pop_stack( | |
1120 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1121 type2 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1122 if (type2.is_category1()) { | |
1123 type3 = current_frame.pop_stack( | |
1124 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1125 } else if (type2.is_category2_2nd()) { | |
1126 type3 = current_frame.pop_stack( | |
1127 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
1128 } else { | |
6605 | 1129 /* Unreachable? Would need a category2_1st at stack depth 2 with |
1130 * a category1 on TOS which does not appear possible. */ | |
1131 verify_error(ErrorContext::bad_type( | |
1132 bci, current_frame.stack_top_ctx()), bad_type_msg, "dup_x2"); | |
0 | 1133 return; |
1134 } | |
1135 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1136 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
1137 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1138 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1139 no_control_flow = false; break; | |
1140 } | |
1141 case Bytecodes::_dup2 : | |
1142 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1143 if (type.is_category1()) { | |
1144 type2 = current_frame.pop_stack( | |
1145 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1146 } else if (type.is_category2_2nd()) { | |
1147 type2 = current_frame.pop_stack( | |
1148 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
1149 } else { | |
6605 | 1150 /* Unreachable? Would need a category2_1st on TOS which does not |
1151 * appear possible. */ | |
1152 verify_error( | |
1153 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
1154 bad_type_msg, "dup2"); | |
0 | 1155 return; |
1156 } | |
1157 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1158 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1159 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1160 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1161 no_control_flow = false; break; | |
1162 case Bytecodes::_dup2_x1 : | |
1163 { | |
1164 VerificationType type3; | |
1165 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1166 if (type.is_category1()) { | |
1167 type2 = current_frame.pop_stack( | |
1168 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
6605 | 1169 } else if (type.is_category2_2nd()) { |
1170 type2 = current_frame.pop_stack( | |
1171 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
0 | 1172 } else { |
6605 | 1173 /* Unreachable? Would need a category2_1st on TOS which does |
1174 * not appear possible. */ | |
1175 verify_error( | |
1176 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
1177 bad_type_msg, "dup2_x1"); | |
0 | 1178 return; |
1179 } | |
1180 type3 = current_frame.pop_stack( | |
1181 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1182 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1183 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1184 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
1185 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1186 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1187 no_control_flow = false; break; | |
1188 } | |
1189 case Bytecodes::_dup2_x2 : | |
1190 { | |
1191 VerificationType type3, type4; | |
1192 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1193 if (type.is_category1()) { | |
1194 type2 = current_frame.pop_stack( | |
1195 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1196 } else if (type.is_category2_2nd()) { | |
1197 type2 = current_frame.pop_stack( | |
1198 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
1199 } else { | |
6605 | 1200 /* Unreachable? Would need a category2_1st on TOS which does |
1201 * not appear possible. */ | |
1202 verify_error( | |
1203 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
1204 bad_type_msg, "dup2_x2"); | |
0 | 1205 return; |
1206 } | |
1207 type3 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1208 if (type3.is_category1()) { | |
1209 type4 = current_frame.pop_stack( | |
1210 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1211 } else if (type3.is_category2_2nd()) { | |
1212 type4 = current_frame.pop_stack( | |
1213 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
1214 } else { | |
6605 | 1215 /* Unreachable? Would need a category2_1st on TOS after popping |
1216 * a long/double or two category 1's, which does not | |
1217 * appear possible. */ | |
1218 verify_error( | |
1219 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
1220 bad_type_msg, "dup2_x2"); | |
0 | 1221 return; |
1222 } | |
1223 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1224 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1225 current_frame.push_stack(type4, CHECK_VERIFY(this)); | |
1226 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
1227 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1228 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1229 no_control_flow = false; break; | |
1230 } | |
1231 case Bytecodes::_swap : | |
1232 type = current_frame.pop_stack( | |
1233 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1234 type2 = current_frame.pop_stack( | |
1235 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1236 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1237 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1238 no_control_flow = false; break; | |
1239 case Bytecodes::_iadd : | |
1240 case Bytecodes::_isub : | |
1241 case Bytecodes::_imul : | |
1242 case Bytecodes::_idiv : | |
1243 case Bytecodes::_irem : | |
1244 case Bytecodes::_ishl : | |
1245 case Bytecodes::_ishr : | |
1246 case Bytecodes::_iushr : | |
1247 case Bytecodes::_ior : | |
1248 case Bytecodes::_ixor : | |
1249 case Bytecodes::_iand : | |
1250 current_frame.pop_stack( | |
1251 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1252 // fall through | |
1253 case Bytecodes::_ineg : | |
1254 current_frame.pop_stack( | |
1255 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1256 current_frame.push_stack( | |
1257 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1258 no_control_flow = false; break; | |
1259 case Bytecodes::_ladd : | |
1260 case Bytecodes::_lsub : | |
1261 case Bytecodes::_lmul : | |
1262 case Bytecodes::_ldiv : | |
1263 case Bytecodes::_lrem : | |
1264 case Bytecodes::_land : | |
1265 case Bytecodes::_lor : | |
1266 case Bytecodes::_lxor : | |
1267 current_frame.pop_stack_2( | |
1268 VerificationType::long2_type(), | |
1269 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1270 // fall through | |
1271 case Bytecodes::_lneg : | |
1272 current_frame.pop_stack_2( | |
1273 VerificationType::long2_type(), | |
1274 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1275 current_frame.push_stack_2( | |
1276 VerificationType::long_type(), | |
1277 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1278 no_control_flow = false; break; | |
1279 case Bytecodes::_lshl : | |
1280 case Bytecodes::_lshr : | |
1281 case Bytecodes::_lushr : | |
1282 current_frame.pop_stack( | |
1283 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1284 current_frame.pop_stack_2( | |
1285 VerificationType::long2_type(), | |
1286 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1287 current_frame.push_stack_2( | |
1288 VerificationType::long_type(), | |
1289 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1290 no_control_flow = false; break; | |
1291 case Bytecodes::_fadd : | |
1292 case Bytecodes::_fsub : | |
1293 case Bytecodes::_fmul : | |
1294 case Bytecodes::_fdiv : | |
1295 case Bytecodes::_frem : | |
1296 current_frame.pop_stack( | |
1297 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1298 // fall through | |
1299 case Bytecodes::_fneg : | |
1300 current_frame.pop_stack( | |
1301 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1302 current_frame.push_stack( | |
1303 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1304 no_control_flow = false; break; | |
1305 case Bytecodes::_dadd : | |
1306 case Bytecodes::_dsub : | |
1307 case Bytecodes::_dmul : | |
1308 case Bytecodes::_ddiv : | |
1309 case Bytecodes::_drem : | |
1310 current_frame.pop_stack_2( | |
1311 VerificationType::double2_type(), | |
1312 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1313 // fall through | |
1314 case Bytecodes::_dneg : | |
1315 current_frame.pop_stack_2( | |
1316 VerificationType::double2_type(), | |
1317 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1318 current_frame.push_stack_2( | |
1319 VerificationType::double_type(), | |
1320 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
1321 no_control_flow = false; break; | |
1322 case Bytecodes::_iinc : | |
1323 verify_iinc(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
1324 no_control_flow = false; break; | |
1325 case Bytecodes::_i2l : | |
1326 type = current_frame.pop_stack( | |
1327 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1328 current_frame.push_stack_2( | |
1329 VerificationType::long_type(), | |
1330 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1331 no_control_flow = false; break; | |
1332 case Bytecodes::_l2i : | |
1333 current_frame.pop_stack_2( | |
1334 VerificationType::long2_type(), | |
1335 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1336 current_frame.push_stack( | |
1337 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1338 no_control_flow = false; break; | |
1339 case Bytecodes::_i2f : | |
1340 current_frame.pop_stack( | |
1341 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1342 current_frame.push_stack( | |
1343 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1344 no_control_flow = false; break; | |
1345 case Bytecodes::_i2d : | |
1346 current_frame.pop_stack( | |
1347 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1348 current_frame.push_stack_2( | |
1349 VerificationType::double_type(), | |
1350 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
1351 no_control_flow = false; break; | |
1352 case Bytecodes::_l2f : | |
1353 current_frame.pop_stack_2( | |
1354 VerificationType::long2_type(), | |
1355 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1356 current_frame.push_stack( | |
1357 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1358 no_control_flow = false; break; | |
1359 case Bytecodes::_l2d : | |
1360 current_frame.pop_stack_2( | |
1361 VerificationType::long2_type(), | |
1362 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1363 current_frame.push_stack_2( | |
1364 VerificationType::double_type(), | |
1365 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
1366 no_control_flow = false; break; | |
1367 case Bytecodes::_f2i : | |
1368 current_frame.pop_stack( | |
1369 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1370 current_frame.push_stack( | |
1371 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1372 no_control_flow = false; break; | |
1373 case Bytecodes::_f2l : | |
1374 current_frame.pop_stack( | |
1375 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1376 current_frame.push_stack_2( | |
1377 VerificationType::long_type(), | |
1378 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1379 no_control_flow = false; break; | |
1380 case Bytecodes::_f2d : | |
1381 current_frame.pop_stack( | |
1382 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1383 current_frame.push_stack_2( | |
1384 VerificationType::double_type(), | |
1385 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
1386 no_control_flow = false; break; | |
1387 case Bytecodes::_d2i : | |
1388 current_frame.pop_stack_2( | |
1389 VerificationType::double2_type(), | |
1390 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1391 current_frame.push_stack( | |
1392 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1393 no_control_flow = false; break; | |
1394 case Bytecodes::_d2l : | |
1395 current_frame.pop_stack_2( | |
1396 VerificationType::double2_type(), | |
1397 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1398 current_frame.push_stack_2( | |
1399 VerificationType::long_type(), | |
1400 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1401 no_control_flow = false; break; | |
1402 case Bytecodes::_d2f : | |
1403 current_frame.pop_stack_2( | |
1404 VerificationType::double2_type(), | |
1405 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1406 current_frame.push_stack( | |
1407 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1408 no_control_flow = false; break; | |
1409 case Bytecodes::_i2b : | |
1410 case Bytecodes::_i2c : | |
1411 case Bytecodes::_i2s : | |
1412 current_frame.pop_stack( | |
1413 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1414 current_frame.push_stack( | |
1415 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1416 no_control_flow = false; break; | |
1417 case Bytecodes::_lcmp : | |
1418 current_frame.pop_stack_2( | |
1419 VerificationType::long2_type(), | |
1420 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1421 current_frame.pop_stack_2( | |
1422 VerificationType::long2_type(), | |
1423 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1424 current_frame.push_stack( | |
1425 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1426 no_control_flow = false; break; | |
1427 case Bytecodes::_fcmpl : | |
1428 case Bytecodes::_fcmpg : | |
1429 current_frame.pop_stack( | |
1430 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1431 current_frame.pop_stack( | |
1432 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1433 current_frame.push_stack( | |
1434 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1435 no_control_flow = false; break; | |
1436 case Bytecodes::_dcmpl : | |
1437 case Bytecodes::_dcmpg : | |
1438 current_frame.pop_stack_2( | |
1439 VerificationType::double2_type(), | |
1440 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1441 current_frame.pop_stack_2( | |
1442 VerificationType::double2_type(), | |
1443 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1444 current_frame.push_stack( | |
1445 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1446 no_control_flow = false; break; | |
1447 case Bytecodes::_if_icmpeq: | |
1448 case Bytecodes::_if_icmpne: | |
1449 case Bytecodes::_if_icmplt: | |
1450 case Bytecodes::_if_icmpge: | |
1451 case Bytecodes::_if_icmpgt: | |
1452 case Bytecodes::_if_icmple: | |
1453 current_frame.pop_stack( | |
1454 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1455 // fall through | |
1456 case Bytecodes::_ifeq: | |
1457 case Bytecodes::_ifne: | |
1458 case Bytecodes::_iflt: | |
1459 case Bytecodes::_ifge: | |
1460 case Bytecodes::_ifgt: | |
1461 case Bytecodes::_ifle: | |
1462 current_frame.pop_stack( | |
1463 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1464 target = bcs.dest(); | |
1465 stackmap_table.check_jump_target( | |
1466 ¤t_frame, target, CHECK_VERIFY(this)); | |
1467 no_control_flow = false; break; | |
1468 case Bytecodes::_if_acmpeq : | |
1469 case Bytecodes::_if_acmpne : | |
1470 current_frame.pop_stack( | |
1471 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1472 // fall through | |
1473 case Bytecodes::_ifnull : | |
1474 case Bytecodes::_ifnonnull : | |
1475 current_frame.pop_stack( | |
1476 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1477 target = bcs.dest(); | |
1478 stackmap_table.check_jump_target | |
1479 (¤t_frame, target, CHECK_VERIFY(this)); | |
1480 no_control_flow = false; break; | |
1481 case Bytecodes::_goto : | |
1482 target = bcs.dest(); | |
1483 stackmap_table.check_jump_target( | |
1484 ¤t_frame, target, CHECK_VERIFY(this)); | |
1485 no_control_flow = true; break; | |
1486 case Bytecodes::_goto_w : | |
1487 target = bcs.dest_w(); | |
1488 stackmap_table.check_jump_target( | |
1489 ¤t_frame, target, CHECK_VERIFY(this)); | |
1490 no_control_flow = true; break; | |
1491 case Bytecodes::_tableswitch : | |
1492 case Bytecodes::_lookupswitch : | |
1493 verify_switch( | |
1494 &bcs, code_length, code_data, ¤t_frame, | |
1495 &stackmap_table, CHECK_VERIFY(this)); | |
1496 no_control_flow = true; break; | |
1497 case Bytecodes::_ireturn : | |
1498 type = current_frame.pop_stack( | |
1499 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
6605 | 1500 verify_return_value(return_type, type, bci, |
1501 ¤t_frame, CHECK_VERIFY(this)); | |
0 | 1502 no_control_flow = true; break; |
1503 case Bytecodes::_lreturn : | |
1504 type2 = current_frame.pop_stack( | |
1505 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1506 type = current_frame.pop_stack( | |
1507 VerificationType::long_type(), CHECK_VERIFY(this)); | |
6605 | 1508 verify_return_value(return_type, type, bci, |
1509 ¤t_frame, CHECK_VERIFY(this)); | |
0 | 1510 no_control_flow = true; break; |
1511 case Bytecodes::_freturn : | |
1512 type = current_frame.pop_stack( | |
1513 VerificationType::float_type(), CHECK_VERIFY(this)); | |
6605 | 1514 verify_return_value(return_type, type, bci, |
1515 ¤t_frame, CHECK_VERIFY(this)); | |
0 | 1516 no_control_flow = true; break; |
1517 case Bytecodes::_dreturn : | |
1518 type2 = current_frame.pop_stack( | |
1519 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
1520 type = current_frame.pop_stack( | |
1521 VerificationType::double_type(), CHECK_VERIFY(this)); | |
6605 | 1522 verify_return_value(return_type, type, bci, |
1523 ¤t_frame, CHECK_VERIFY(this)); | |
0 | 1524 no_control_flow = true; break; |
1525 case Bytecodes::_areturn : | |
1526 type = current_frame.pop_stack( | |
1527 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
6605 | 1528 verify_return_value(return_type, type, bci, |
1529 ¤t_frame, CHECK_VERIFY(this)); | |
0 | 1530 no_control_flow = true; break; |
1531 case Bytecodes::_return : | |
1532 if (return_type != VerificationType::bogus_type()) { | |
6605 | 1533 verify_error(ErrorContext::bad_code(bci), |
1534 "Method expects a return value"); | |
0 | 1535 return; |
1536 } | |
1537 // Make sure "this" has been initialized if current method is an | |
1538 // <init> | |
1539 if (_method->name() == vmSymbols::object_initializer_name() && | |
1540 current_frame.flag_this_uninit()) { | |
6605 | 1541 verify_error(ErrorContext::bad_code(bci), |
1542 "Constructor must call super() or this() " | |
1543 "before return"); | |
0 | 1544 return; |
1545 } | |
1546 no_control_flow = true; break; | |
1547 case Bytecodes::_getstatic : | |
1548 case Bytecodes::_putstatic : | |
1549 case Bytecodes::_getfield : | |
1550 case Bytecodes::_putfield : | |
1551 verify_field_instructions( | |
1552 &bcs, ¤t_frame, cp, CHECK_VERIFY(this)); | |
1553 no_control_flow = false; break; | |
1554 case Bytecodes::_invokevirtual : | |
1555 case Bytecodes::_invokespecial : | |
1556 case Bytecodes::_invokestatic : | |
1557 verify_invoke_instructions( | |
1558 &bcs, code_length, ¤t_frame, | |
1559 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
1560 no_control_flow = false; break; | |
1561 case Bytecodes::_invokeinterface : | |
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1562 case Bytecodes::_invokedynamic : |
0 | 1563 verify_invoke_instructions( |
1564 &bcs, code_length, ¤t_frame, | |
1565 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
1566 no_control_flow = false; break; | |
1567 case Bytecodes::_new : | |
1568 { | |
1565 | 1569 index = bcs.get_index_u2(); |
6605 | 1570 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
0 | 1571 VerificationType new_class_type = |
1572 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
1573 if (!new_class_type.is_object()) { | |
6605 | 1574 verify_error(ErrorContext::bad_type(bci, |
1575 TypeOrigin::cp(index, new_class_type)), | |
1576 "Illegal new instruction"); | |
0 | 1577 return; |
1578 } | |
1579 type = VerificationType::uninitialized_type(bci); | |
1580 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1581 no_control_flow = false; break; | |
1582 } | |
1583 case Bytecodes::_newarray : | |
1584 type = get_newarray_type(bcs.get_index(), bci, CHECK_VERIFY(this)); | |
1585 current_frame.pop_stack( | |
1586 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1587 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1588 no_control_flow = false; break; | |
1589 case Bytecodes::_anewarray : | |
1590 verify_anewarray( | |
6605 | 1591 bci, bcs.get_index_u2(), cp, ¤t_frame, CHECK_VERIFY(this)); |
0 | 1592 no_control_flow = false; break; |
1593 case Bytecodes::_arraylength : | |
1594 type = current_frame.pop_stack( | |
1595 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
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1596 if (!(type.is_null() || type.is_array())) { |
6605 | 1597 verify_error(ErrorContext::bad_type( |
1598 bci, current_frame.stack_top_ctx()), | |
1599 bad_type_msg, "arraylength"); | |
0 | 1600 } |
1601 current_frame.push_stack( | |
1602 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1603 no_control_flow = false; break; | |
1604 case Bytecodes::_checkcast : | |
1605 { | |
1565 | 1606 index = bcs.get_index_u2(); |
6605 | 1607 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
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1608 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
0 | 1609 VerificationType klass_type = cp_index_to_type( |
1610 index, cp, CHECK_VERIFY(this)); | |
1611 current_frame.push_stack(klass_type, CHECK_VERIFY(this)); | |
1612 no_control_flow = false; break; | |
1613 } | |
1614 case Bytecodes::_instanceof : { | |
1565 | 1615 index = bcs.get_index_u2(); |
6605 | 1616 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
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1617 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
0 | 1618 current_frame.push_stack( |
1619 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1620 no_control_flow = false; break; | |
1621 } | |
1622 case Bytecodes::_monitorenter : | |
1623 case Bytecodes::_monitorexit : | |
1624 current_frame.pop_stack( | |
1625 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1626 no_control_flow = false; break; | |
1627 case Bytecodes::_multianewarray : | |
1628 { | |
1565 | 1629 index = bcs.get_index_u2(); |
0 | 1630 u2 dim = *(bcs.bcp()+3); |
6605 | 1631 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
0 | 1632 VerificationType new_array_type = |
1633 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
1634 if (!new_array_type.is_array()) { | |
6605 | 1635 verify_error(ErrorContext::bad_type(bci, |
1636 TypeOrigin::cp(index, new_array_type)), | |
1637 "Illegal constant pool index in multianewarray instruction"); | |
0 | 1638 return; |
1639 } | |
1640 if (dim < 1 || new_array_type.dimensions() < dim) { | |
6605 | 1641 verify_error(ErrorContext::bad_code(bci), |
1642 "Illegal dimension in multianewarray instruction: %d", dim); | |
0 | 1643 return; |
1644 } | |
1645 for (int i = 0; i < dim; i++) { | |
1646 current_frame.pop_stack( | |
1647 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1648 } | |
1649 current_frame.push_stack(new_array_type, CHECK_VERIFY(this)); | |
1650 no_control_flow = false; break; | |
1651 } | |
1652 case Bytecodes::_athrow : | |
1653 type = VerificationType::reference_type( | |
1654 vmSymbols::java_lang_Throwable()); | |
1655 current_frame.pop_stack(type, CHECK_VERIFY(this)); | |
1656 no_control_flow = true; break; | |
1657 default: | |
1658 // We only need to check the valid bytecodes in class file. | |
1659 // And jsr and ret are not in the new class file format in JDK1.5. | |
6605 | 1660 verify_error(ErrorContext::bad_code(bci), |
1661 "Bad instruction: %02x", opcode); | |
0 | 1662 no_control_flow = false; |
1663 return; | |
1664 } // end switch | |
1665 } // end Merge with the next instruction | |
1666 | |
1667 // Look for possible jump target in exception handlers and see if it | |
1668 // matches current_frame | |
1669 if (bci >= ex_min && bci < ex_max) { | |
1670 verify_exception_handler_targets( | |
1671 bci, this_uninit, ¤t_frame, &stackmap_table, CHECK_VERIFY(this)); | |
1672 } | |
1673 } // end while | |
1674 | |
1675 // Make sure that control flow does not fall through end of the method | |
1676 if (!no_control_flow) { | |
6605 | 1677 verify_error(ErrorContext::bad_code(code_length), |
1678 "Control flow falls through code end"); | |
0 | 1679 return; |
1680 } | |
1681 } | |
1682 | |
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1683 #undef bad_type_message |
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1684 |
0 | 1685 char* ClassVerifier::generate_code_data(methodHandle m, u4 code_length, TRAPS) { |
1686 char* code_data = NEW_RESOURCE_ARRAY(char, code_length); | |
1687 memset(code_data, 0, sizeof(char) * code_length); | |
1688 RawBytecodeStream bcs(m); | |
1689 | |
1690 while (!bcs.is_last_bytecode()) { | |
1691 if (bcs.raw_next() != Bytecodes::_illegal) { | |
1692 int bci = bcs.bci(); | |
1565 | 1693 if (bcs.raw_code() == Bytecodes::_new) { |
0 | 1694 code_data[bci] = NEW_OFFSET; |
1695 } else { | |
1696 code_data[bci] = BYTECODE_OFFSET; | |
1697 } | |
1698 } else { | |
6605 | 1699 verify_error(ErrorContext::bad_code(bcs.bci()), "Bad instruction"); |
0 | 1700 return NULL; |
1701 } | |
1702 } | |
1703 | |
1704 return code_data; | |
1705 } | |
1706 | |
1707 void ClassVerifier::verify_exception_handler_table(u4 code_length, char* code_data, int& min, int& max, TRAPS) { | |
6213
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|
1708 ExceptionTable exhandlers(_method()); |
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1709 int exlength = exhandlers.length(); |
0 | 1710 constantPoolHandle cp (THREAD, _method->constants()); |
1711 | |
6213
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|
1712 for(int i = 0; i < exlength; i++) { |
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7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
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1713 //reacquire the table in case a GC happened |
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|
1714 ExceptionTable exhandlers(_method()); |
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1715 u2 start_pc = exhandlers.start_pc(i); |
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1716 u2 end_pc = exhandlers.end_pc(i); |
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1717 u2 handler_pc = exhandlers.handler_pc(i); |
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1718 if (start_pc >= code_length || code_data[start_pc] == 0) { |
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|
1719 class_format_error("Illegal exception table start_pc %d", start_pc); |
8150fa46d2ed
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|
1720 return; |
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|
1721 } |
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|
1722 if (end_pc != code_length) { // special case: end_pc == code_length |
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|
1723 if (end_pc > code_length || code_data[end_pc] == 0) { |
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diff
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|
1724 class_format_error("Illegal exception table end_pc %d", end_pc); |
0 | 1725 return; |
1726 } | |
6213
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|
1727 } |
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7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
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|
1728 if (handler_pc >= code_length || code_data[handler_pc] == 0) { |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
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diff
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|
1729 class_format_error("Illegal exception table handler_pc %d", handler_pc); |
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7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
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1730 return; |
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1731 } |
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1732 int catch_type_index = exhandlers.catch_type_index(i); |
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1733 if (catch_type_index != 0) { |
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1734 VerificationType catch_type = cp_index_to_type( |
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1735 catch_type_index, cp, CHECK_VERIFY(this)); |
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1736 VerificationType throwable = |
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1737 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
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1738 bool is_subclass = throwable.is_assignable_from( |
18052 | 1739 catch_type, this, false, CHECK_VERIFY(this)); |
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1740 if (!is_subclass) { |
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1741 // 4286534: should throw VerifyError according to recent spec change |
6605 | 1742 verify_error(ErrorContext::bad_type(handler_pc, |
1743 TypeOrigin::cp(catch_type_index, catch_type), | |
1744 TypeOrigin::implicit(throwable)), | |
1745 "Catch type is not a subclass " | |
1746 "of Throwable in exception handler %d", handler_pc); | |
0 | 1747 return; |
1748 } | |
1749 } | |
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1750 if (start_pc < min) min = start_pc; |
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1751 if (end_pc > max) max = end_pc; |
0 | 1752 } |
1753 } | |
1754 | |
1755 void ClassVerifier::verify_local_variable_table(u4 code_length, char* code_data, TRAPS) { | |
1756 int localvariable_table_length = _method()->localvariable_table_length(); | |
1757 if (localvariable_table_length > 0) { | |
1758 LocalVariableTableElement* table = _method()->localvariable_table_start(); | |
1759 for (int i = 0; i < localvariable_table_length; i++) { | |
1760 u2 start_bci = table[i].start_bci; | |
1761 u2 length = table[i].length; | |
1762 | |
1763 if (start_bci >= code_length || code_data[start_bci] == 0) { | |
1764 class_format_error( | |
1765 "Illegal local variable table start_pc %d", start_bci); | |
1766 return; | |
1767 } | |
1768 u4 end_bci = (u4)(start_bci + length); | |
1769 if (end_bci != code_length) { | |
1770 if (end_bci >= code_length || code_data[end_bci] == 0) { | |
1771 class_format_error( "Illegal local variable table length %d", length); | |
1772 return; | |
1773 } | |
1774 } | |
1775 } | |
1776 } | |
1777 } | |
1778 | |
1779 u2 ClassVerifier::verify_stackmap_table(u2 stackmap_index, u2 bci, | |
1780 StackMapFrame* current_frame, | |
1781 StackMapTable* stackmap_table, | |
1782 bool no_control_flow, TRAPS) { | |
1783 if (stackmap_index < stackmap_table->get_frame_count()) { | |
1784 u2 this_offset = stackmap_table->get_offset(stackmap_index); | |
1785 if (no_control_flow && this_offset > bci) { | |
6605 | 1786 verify_error(ErrorContext::missing_stackmap(bci), |
1787 "Expecting a stack map frame"); | |
0 | 1788 return 0; |
1789 } | |
1790 if (this_offset == bci) { | |
6605 | 1791 ErrorContext ctx; |
0 | 1792 // See if current stack map can be assigned to the frame in table. |
1793 // current_frame is the stackmap frame got from the last instruction. | |
1794 // If matched, current_frame will be updated by this method. | |
6605 | 1795 bool matches = stackmap_table->match_stackmap( |
0 | 1796 current_frame, this_offset, stackmap_index, |
6605 | 1797 !no_control_flow, true, &ctx, CHECK_VERIFY_(this, 0)); |
1798 if (!matches) { | |
0 | 1799 // report type error |
6605 | 1800 verify_error(ctx, "Instruction type does not match stack map"); |
0 | 1801 return 0; |
1802 } | |
1803 stackmap_index++; | |
1804 } else if (this_offset < bci) { | |
1805 // current_offset should have met this_offset. | |
1806 class_format_error("Bad stack map offset %d", this_offset); | |
1807 return 0; | |
1808 } | |
1809 } else if (no_control_flow) { | |
6605 | 1810 verify_error(ErrorContext::bad_code(bci), "Expecting a stack map frame"); |
0 | 1811 return 0; |
1812 } | |
1813 return stackmap_index; | |
1814 } | |
1815 | |
1816 void ClassVerifier::verify_exception_handler_targets(u2 bci, bool this_uninit, StackMapFrame* current_frame, | |
1817 StackMapTable* stackmap_table, TRAPS) { | |
1818 constantPoolHandle cp (THREAD, _method->constants()); | |
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1819 ExceptionTable exhandlers(_method()); |
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1820 int exlength = exhandlers.length(); |
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1821 for(int i = 0; i < exlength; i++) { |
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1822 //reacquire the table in case a GC happened |
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1823 ExceptionTable exhandlers(_method()); |
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1824 u2 start_pc = exhandlers.start_pc(i); |
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1825 u2 end_pc = exhandlers.end_pc(i); |
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1826 u2 handler_pc = exhandlers.handler_pc(i); |
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1827 int catch_type_index = exhandlers.catch_type_index(i); |
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1828 if(bci >= start_pc && bci < end_pc) { |
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1829 u1 flags = current_frame->flags(); |
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1830 if (this_uninit) { flags |= FLAG_THIS_UNINIT; } |
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1831 StackMapFrame* new_frame = current_frame->frame_in_exception_handler(flags); |
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1832 if (catch_type_index != 0) { |
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1833 // We know that this index refers to a subclass of Throwable |
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1834 VerificationType catch_type = cp_index_to_type( |
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1835 catch_type_index, cp, CHECK_VERIFY(this)); |
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1836 new_frame->push_stack(catch_type, CHECK_VERIFY(this)); |
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1837 } else { |
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1838 VerificationType throwable = |
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1839 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
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1840 new_frame->push_stack(throwable, CHECK_VERIFY(this)); |
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1841 } |
6605 | 1842 ErrorContext ctx; |
1843 bool matches = stackmap_table->match_stackmap( | |
1844 new_frame, handler_pc, true, false, &ctx, CHECK_VERIFY(this)); | |
1845 if (!matches) { | |
1846 verify_error(ctx, "Stack map does not match the one at " | |
1847 "exception handler %d", handler_pc); | |
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1848 return; |
0 | 1849 } |
1850 } | |
1851 } | |
1852 } | |
1853 | |
6605 | 1854 void ClassVerifier::verify_cp_index( |
1855 u2 bci, constantPoolHandle cp, int index, TRAPS) { | |
0 | 1856 int nconstants = cp->length(); |
1857 if ((index <= 0) || (index >= nconstants)) { | |
6605 | 1858 verify_error(ErrorContext::bad_cp_index(bci, index), |
1859 "Illegal constant pool index %d in class %s", | |
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1860 index, cp->pool_holder()->external_name()); |
0 | 1861 return; |
1862 } | |
1863 } | |
1864 | |
1865 void ClassVerifier::verify_cp_type( | |
6605 | 1866 u2 bci, int index, constantPoolHandle cp, unsigned int types, TRAPS) { |
0 | 1867 |
1868 // In some situations, bytecode rewriting may occur while we're verifying. | |
1869 // In this case, a constant pool cache exists and some indices refer to that | |
1570 | 1870 // instead. Be sure we don't pick up such indices by accident. |
1871 // We must check was_recursively_verified() before we get here. | |
1872 guarantee(cp->cache() == NULL, "not rewritten yet"); | |
0 | 1873 |
6605 | 1874 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); |
0 | 1875 unsigned int tag = cp->tag_at(index).value(); |
1876 if ((types & (1 << tag)) == 0) { | |
6605 | 1877 verify_error(ErrorContext::bad_cp_index(bci, index), |
0 | 1878 "Illegal type at constant pool entry %d in class %s", |
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1879 index, cp->pool_holder()->external_name()); |
0 | 1880 return; |
1881 } | |
1882 } | |
1883 | |
1884 void ClassVerifier::verify_cp_class_type( | |
6605 | 1885 u2 bci, int index, constantPoolHandle cp, TRAPS) { |
1886 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); | |
0 | 1887 constantTag tag = cp->tag_at(index); |
1888 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
6605 | 1889 verify_error(ErrorContext::bad_cp_index(bci, index), |
1890 "Illegal type at constant pool entry %d in class %s", | |
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1891 index, cp->pool_holder()->external_name()); |
0 | 1892 return; |
1893 } | |
1894 } | |
1895 | |
6605 | 1896 void ClassVerifier::verify_error(ErrorContext ctx, const char* msg, ...) { |
1897 stringStream ss; | |
0 | 1898 |
6605 | 1899 ctx.reset_frames(); |
0 | 1900 _exception_type = vmSymbols::java_lang_VerifyError(); |
6605 | 1901 _error_context = ctx; |
0 | 1902 va_list va; |
6605 | 1903 va_start(va, msg); |
1904 ss.vprint(msg, va); | |
0 | 1905 va_end(va); |
6605 | 1906 _message = ss.as_string(); |
1907 #ifdef ASSERT | |
1908 ResourceMark rm; | |
1909 const char* exception_name = _exception_type->as_C_string(); | |
1910 Exceptions::debug_check_abort(exception_name, NULL); | |
1911 #endif // ndef ASSERT | |
0 | 1912 } |
1913 | |
1914 void ClassVerifier::class_format_error(const char* msg, ...) { | |
6605 | 1915 stringStream ss; |
0 | 1916 _exception_type = vmSymbols::java_lang_ClassFormatError(); |
1917 va_list va; | |
1918 va_start(va, msg); | |
6605 | 1919 ss.vprint(msg, va); |
0 | 1920 va_end(va); |
6605 | 1921 if (!_method.is_null()) { |
1922 ss.print(" in method %s", _method->name_and_sig_as_C_string()); | |
1923 } | |
1924 _message = ss.as_string(); | |
0 | 1925 } |
1926 | |
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1927 Klass* ClassVerifier::load_class(Symbol* name, TRAPS) { |
0 | 1928 // Get current loader and protection domain first. |
1929 oop loader = current_class()->class_loader(); | |
1930 oop protection_domain = current_class()->protection_domain(); | |
1931 | |
1932 return SystemDictionary::resolve_or_fail( | |
1933 name, Handle(THREAD, loader), Handle(THREAD, protection_domain), | |
1934 true, CHECK_NULL); | |
1935 } | |
1936 | |
1937 bool ClassVerifier::is_protected_access(instanceKlassHandle this_class, | |
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1938 Klass* target_class, |
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1939 Symbol* field_name, |
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1940 Symbol* field_sig, |
0 | 1941 bool is_method) { |
1942 No_Safepoint_Verifier nosafepoint; | |
1943 | |
1944 // If target class isn't a super class of this class, we don't worry about this case | |
1945 if (!this_class->is_subclass_of(target_class)) { | |
1946 return false; | |
1947 } | |
1948 // Check if the specified method or field is protected | |
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1949 InstanceKlass* target_instance = InstanceKlass::cast(target_class); |
0 | 1950 fieldDescriptor fd; |
1951 if (is_method) { | |
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1952 Method* m = target_instance->uncached_lookup_method(field_name, field_sig, Klass::normal); |
0 | 1953 if (m != NULL && m->is_protected()) { |
1954 if (!this_class->is_same_class_package(m->method_holder())) { | |
1955 return true; | |
1956 } | |
1957 } | |
1958 } else { | |
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1959 Klass* member_klass = target_instance->find_field(field_name, field_sig, &fd); |
6605 | 1960 if (member_klass != NULL && fd.is_protected()) { |
0 | 1961 if (!this_class->is_same_class_package(member_klass)) { |
1962 return true; | |
1963 } | |
1964 } | |
1965 } | |
1966 return false; | |
1967 } | |
1968 | |
1969 void ClassVerifier::verify_ldc( | |
6605 | 1970 int opcode, u2 index, StackMapFrame* current_frame, |
1971 constantPoolHandle cp, u2 bci, TRAPS) { | |
1972 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); | |
0 | 1973 constantTag tag = cp->tag_at(index); |
1974 unsigned int types; | |
1975 if (opcode == Bytecodes::_ldc || opcode == Bytecodes::_ldc_w) { | |
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1976 if (!tag.is_unresolved_klass()) { |
0 | 1977 types = (1 << JVM_CONSTANT_Integer) | (1 << JVM_CONSTANT_Float) |
1602 | 1978 | (1 << JVM_CONSTANT_String) | (1 << JVM_CONSTANT_Class) |
1979 | (1 << JVM_CONSTANT_MethodHandle) | (1 << JVM_CONSTANT_MethodType); | |
1980 // Note: The class file parser already verified the legality of | |
1981 // MethodHandle and MethodType constants. | |
6605 | 1982 verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
0 | 1983 } |
1984 } else { | |
1985 assert(opcode == Bytecodes::_ldc2_w, "must be ldc2_w"); | |
1986 types = (1 << JVM_CONSTANT_Double) | (1 << JVM_CONSTANT_Long); | |
6605 | 1987 verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
0 | 1988 } |
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1989 if (tag.is_string() && cp->is_pseudo_string_at(index)) { |
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1990 current_frame->push_stack(object_type(), CHECK_VERIFY(this)); |
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1991 } else if (tag.is_string()) { |
0 | 1992 current_frame->push_stack( |
1993 VerificationType::reference_type( | |
1994 vmSymbols::java_lang_String()), CHECK_VERIFY(this)); | |
1995 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
1996 current_frame->push_stack( | |
1997 VerificationType::reference_type( | |
1998 vmSymbols::java_lang_Class()), CHECK_VERIFY(this)); | |
1999 } else if (tag.is_int()) { | |
2000 current_frame->push_stack( | |
2001 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2002 } else if (tag.is_float()) { | |
2003 current_frame->push_stack( | |
2004 VerificationType::float_type(), CHECK_VERIFY(this)); | |
2005 } else if (tag.is_double()) { | |
2006 current_frame->push_stack_2( | |
2007 VerificationType::double_type(), | |
2008 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
2009 } else if (tag.is_long()) { | |
2010 current_frame->push_stack_2( | |
2011 VerificationType::long_type(), | |
2012 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1602 | 2013 } else if (tag.is_method_handle()) { |
2014 current_frame->push_stack( | |
2015 VerificationType::reference_type( | |
2460 | 2016 vmSymbols::java_lang_invoke_MethodHandle()), CHECK_VERIFY(this)); |
1602 | 2017 } else if (tag.is_method_type()) { |
2018 current_frame->push_stack( | |
2019 VerificationType::reference_type( | |
2460 | 2020 vmSymbols::java_lang_invoke_MethodType()), CHECK_VERIFY(this)); |
0 | 2021 } else { |
6605 | 2022 /* Unreachable? verify_cp_type has already validated the cp type. */ |
2023 verify_error( | |
2024 ErrorContext::bad_cp_index(bci, index), "Invalid index in ldc"); | |
0 | 2025 return; |
2026 } | |
2027 } | |
2028 | |
2029 void ClassVerifier::verify_switch( | |
2030 RawBytecodeStream* bcs, u4 code_length, char* code_data, | |
2031 StackMapFrame* current_frame, StackMapTable* stackmap_table, TRAPS) { | |
2032 int bci = bcs->bci(); | |
2033 address bcp = bcs->bcp(); | |
2034 address aligned_bcp = (address) round_to((intptr_t)(bcp + 1), jintSize); | |
2035 | |
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2036 if (_klass->major_version() < NONZERO_PADDING_BYTES_IN_SWITCH_MAJOR_VERSION) { |
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2037 // 4639449 & 4647081: padding bytes must be 0 |
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2038 u2 padding_offset = 1; |
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2039 while ((bcp + padding_offset) < aligned_bcp) { |
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2040 if(*(bcp + padding_offset) != 0) { |
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8010667: Non-zero padding is not allowed in splitverifier for tableswitch/lookupswitch instructions.
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diff
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|
2041 verify_error(ErrorContext::bad_code(bci), |
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8010667: Non-zero padding is not allowed in splitverifier for tableswitch/lookupswitch instructions.
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diff
changeset
|
2042 "Nonzero padding byte in lookswitch or tableswitch"); |
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8010667: Non-zero padding is not allowed in splitverifier for tableswitch/lookupswitch instructions.
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|
2043 return; |
729be16a470b
8010667: Non-zero padding is not allowed in splitverifier for tableswitch/lookupswitch instructions.
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diff
changeset
|
2044 } |
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diff
changeset
|
2045 padding_offset++; |
0 | 2046 } |
2047 } | |
8816
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diff
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|
2048 |
0 | 2049 int default_offset = (int) Bytes::get_Java_u4(aligned_bcp); |
2050 int keys, delta; | |
2051 current_frame->pop_stack( | |
2052 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1565 | 2053 if (bcs->raw_code() == Bytecodes::_tableswitch) { |
0 | 2054 jint low = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize); |
2055 jint high = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize); | |
2056 if (low > high) { | |
6605 | 2057 verify_error(ErrorContext::bad_code(bci), |
2058 "low must be less than or equal to high in tableswitch"); | |
0 | 2059 return; |
2060 } | |
2061 keys = high - low + 1; | |
2062 if (keys < 0) { | |
6605 | 2063 verify_error(ErrorContext::bad_code(bci), "too many keys in tableswitch"); |
0 | 2064 return; |
2065 } | |
2066 delta = 1; | |
2067 } else { | |
2068 keys = (int)Bytes::get_Java_u4(aligned_bcp + jintSize); | |
2069 if (keys < 0) { | |
6605 | 2070 verify_error(ErrorContext::bad_code(bci), |
2071 "number of keys in lookupswitch less than 0"); | |
0 | 2072 return; |
2073 } | |
2074 delta = 2; | |
2075 // Make sure that the lookupswitch items are sorted | |
2076 for (int i = 0; i < (keys - 1); i++) { | |
2077 jint this_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i)*jintSize); | |
2078 jint next_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i+2)*jintSize); | |
2079 if (this_key >= next_key) { | |
6605 | 2080 verify_error(ErrorContext::bad_code(bci), |
2081 "Bad lookupswitch instruction"); | |
0 | 2082 return; |
2083 } | |
2084 } | |
2085 } | |
2086 int target = bci + default_offset; | |
2087 stackmap_table->check_jump_target(current_frame, target, CHECK_VERIFY(this)); | |
2088 for (int i = 0; i < keys; i++) { | |
6118 | 2089 // Because check_jump_target() may safepoint, the bytecode could have |
2090 // moved, which means 'aligned_bcp' is no good and needs to be recalculated. | |
2091 aligned_bcp = (address)round_to((intptr_t)(bcs->bcp() + 1), jintSize); | |
0 | 2092 target = bci + (jint)Bytes::get_Java_u4(aligned_bcp+(3+i*delta)*jintSize); |
2093 stackmap_table->check_jump_target( | |
2094 current_frame, target, CHECK_VERIFY(this)); | |
2095 } | |
6118 | 2096 NOT_PRODUCT(aligned_bcp = NULL); // no longer valid at this point |
0 | 2097 } |
2098 | |
2099 bool ClassVerifier::name_in_supers( | |
2177
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diff
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|
2100 Symbol* ref_name, instanceKlassHandle current) { |
6725
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|
2101 Klass* super = current->super(); |
0 | 2102 while (super != NULL) { |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
2103 if (super->name() == ref_name) { |
0 | 2104 return true; |
2105 } | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2106 super = super->super(); |
0 | 2107 } |
2108 return false; | |
2109 } | |
2110 | |
2111 void ClassVerifier::verify_field_instructions(RawBytecodeStream* bcs, | |
2112 StackMapFrame* current_frame, | |
2113 constantPoolHandle cp, | |
2114 TRAPS) { | |
1565 | 2115 u2 index = bcs->get_index_u2(); |
6605 | 2116 verify_cp_type(bcs->bci(), index, cp, |
2117 1 << JVM_CONSTANT_Fieldref, CHECK_VERIFY(this)); | |
0 | 2118 |
2119 // Get field name and signature | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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2120 Symbol* field_name = cp->name_ref_at(index); |
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2121 Symbol* field_sig = cp->signature_ref_at(index); |
0 | 2122 |
2123 if (!SignatureVerifier::is_valid_type_signature(field_sig)) { | |
2124 class_format_error( | |
2125 "Invalid signature for field in class %s referenced " | |
2126 "from constant pool index %d", _klass->external_name(), index); | |
2127 return; | |
2128 } | |
2129 | |
2130 // Get referenced class type | |
2131 VerificationType ref_class_type = cp_ref_index_to_type( | |
2132 index, cp, CHECK_VERIFY(this)); | |
2133 if (!ref_class_type.is_object()) { | |
6605 | 2134 /* Unreachable? Class file parser verifies Fieldref contents */ |
2135 verify_error(ErrorContext::bad_type(bcs->bci(), | |
2136 TypeOrigin::cp(index, ref_class_type)), | |
2137 "Expecting reference to class in class %s at constant pool index %d", | |
2138 _klass->external_name(), index); | |
0 | 2139 return; |
2140 } | |
2141 VerificationType target_class_type = ref_class_type; | |
2142 | |
2143 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
2144 "buffer type must match VerificationType size"); | |
2145 uintptr_t field_type_buffer[2]; | |
2146 VerificationType* field_type = (VerificationType*)field_type_buffer; | |
2147 // If we make a VerificationType[2] array directly, the compiler calls | |
2148 // to the c-runtime library to do the allocation instead of just | |
2149 // stack allocating it. Plus it would run constructors. This shows up | |
2150 // in performance profiles. | |
2151 | |
2152 SignatureStream sig_stream(field_sig, false); | |
2153 VerificationType stack_object_type; | |
2154 int n = change_sig_to_verificationType( | |
2155 &sig_stream, field_type, CHECK_VERIFY(this)); | |
2156 u2 bci = bcs->bci(); | |
2157 bool is_assignable; | |
1565 | 2158 switch (bcs->raw_code()) { |
0 | 2159 case Bytecodes::_getstatic: { |
2160 for (int i = 0; i < n; i++) { | |
2161 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
2162 } | |
2163 break; | |
2164 } | |
2165 case Bytecodes::_putstatic: { | |
2166 for (int i = n - 1; i >= 0; i--) { | |
2167 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
2168 } | |
2169 break; | |
2170 } | |
2171 case Bytecodes::_getfield: { | |
2172 stack_object_type = current_frame->pop_stack( | |
2173 target_class_type, CHECK_VERIFY(this)); | |
2174 for (int i = 0; i < n; i++) { | |
2175 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
2176 } | |
2177 goto check_protected; | |
2178 } | |
2179 case Bytecodes::_putfield: { | |
2180 for (int i = n - 1; i >= 0; i--) { | |
2181 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
2182 } | |
2183 stack_object_type = current_frame->pop_stack(CHECK_VERIFY(this)); | |
2184 | |
2185 // The JVMS 2nd edition allows field initialization before the superclass | |
2186 // initializer, if the field is defined within the current class. | |
2187 fieldDescriptor fd; | |
2188 if (stack_object_type == VerificationType::uninitialized_this_type() && | |
2189 target_class_type.equals(current_type()) && | |
2177
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diff
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2190 _klass->find_local_field(field_name, field_sig, &fd)) { |
0 | 2191 stack_object_type = current_type(); |
2192 } | |
2193 is_assignable = target_class_type.is_assignable_from( | |
18052 | 2194 stack_object_type, this, false, CHECK_VERIFY(this)); |
0 | 2195 if (!is_assignable) { |
6605 | 2196 verify_error(ErrorContext::bad_type(bci, |
2197 current_frame->stack_top_ctx(), | |
2198 TypeOrigin::cp(index, target_class_type)), | |
2199 "Bad type on operand stack in putfield"); | |
0 | 2200 return; |
2201 } | |
2202 } | |
2203 check_protected: { | |
2204 if (_this_type == stack_object_type) | |
2205 break; // stack_object_type must be assignable to _current_class_type | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2206 Symbol* ref_class_name = |
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2207 cp->klass_name_at(cp->klass_ref_index_at(index)); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2208 if (!name_in_supers(ref_class_name, current_class())) |
0 | 2209 // stack_object_type must be assignable to _current_class_type since: |
2210 // 1. stack_object_type must be assignable to ref_class. | |
2211 // 2. ref_class must be _current_class or a subclass of it. It can't | |
2212 // be a superclass of it. See revised JVMS 5.4.4. | |
2213 break; | |
2214 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6608
diff
changeset
|
2215 Klass* ref_class_oop = load_class(ref_class_name, CHECK); |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
2216 if (is_protected_access(current_class(), ref_class_oop, field_name, |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
2217 field_sig, false)) { |
0 | 2218 // It's protected access, check if stack object is assignable to |
2219 // current class. | |
2220 is_assignable = current_type().is_assignable_from( | |
18052 | 2221 stack_object_type, this, true, CHECK_VERIFY(this)); |
0 | 2222 if (!is_assignable) { |
6605 | 2223 verify_error(ErrorContext::bad_type(bci, |
2224 current_frame->stack_top_ctx(), | |
2225 TypeOrigin::implicit(current_type())), | |
2226 "Bad access to protected data in getfield"); | |
0 | 2227 return; |
2228 } | |
2229 } | |
2230 break; | |
2231 } | |
2232 default: ShouldNotReachHere(); | |
2233 } | |
2234 } | |
2235 | |
2236 void ClassVerifier::verify_invoke_init( | |
6605 | 2237 RawBytecodeStream* bcs, u2 ref_class_index, VerificationType ref_class_type, |
0 | 2238 StackMapFrame* current_frame, u4 code_length, bool *this_uninit, |
2239 constantPoolHandle cp, TRAPS) { | |
2240 u2 bci = bcs->bci(); | |
2241 VerificationType type = current_frame->pop_stack( | |
2242 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
2243 if (type == VerificationType::uninitialized_this_type()) { | |
6155 | 2244 // The method must be an <init> method of this class or its superclass |
6725
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6608
diff
changeset
|
2245 Klass* superk = current_class()->super(); |
1677 | 2246 if (ref_class_type.name() != current_class()->name() && |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6608
diff
changeset
|
2247 ref_class_type.name() != superk->name()) { |
6605 | 2248 verify_error(ErrorContext::bad_type(bci, |
2249 TypeOrigin::implicit(ref_class_type), | |
2250 TypeOrigin::implicit(current_type())), | |
2251 "Bad <init> method call"); | |
0 | 2252 return; |
2253 } | |
17573 | 2254 |
2255 // Make sure that this call is not jumped over. | |
2256 if (bci < furthest_jump()) { | |
2257 verify_error(ErrorContext::bad_code(bci), | |
2258 "Bad <init> method call from inside of a branch"); | |
2259 return; | |
2260 } | |
2261 | |
2262 // Make sure that this call is not done from within a TRY block because | |
2263 // that can result in returning an incomplete object. Simply checking | |
2264 // (bci >= start_pc) also ensures that this call is not done after a TRY | |
2265 // block. That is also illegal because this call must be the first Java | |
2266 // statement in the constructor. | |
2267 ExceptionTable exhandlers(_method()); | |
2268 int exlength = exhandlers.length(); | |
2269 for(int i = 0; i < exlength; i++) { | |
2270 if (bci >= exhandlers.start_pc(i)) { | |
2271 verify_error(ErrorContext::bad_code(bci), | |
2272 "Bad <init> method call from after the start of a try block"); | |
2273 return; | |
2274 } | |
2275 } | |
2276 | |
0 | 2277 current_frame->initialize_object(type, current_type()); |
2278 *this_uninit = true; | |
2279 } else if (type.is_uninitialized()) { | |
2280 u2 new_offset = type.bci(); | |
2281 address new_bcp = bcs->bcp() - bci + new_offset; | |
2282 if (new_offset > (code_length - 3) || (*new_bcp) != Bytecodes::_new) { | |
6605 | 2283 /* Unreachable? Stack map parsing ensures valid type and new |
2284 * instructions have a valid BCI. */ | |
2285 verify_error(ErrorContext::bad_code(new_offset), | |
2286 "Expecting new instruction"); | |
0 | 2287 return; |
2288 } | |
2289 u2 new_class_index = Bytes::get_Java_u2(new_bcp + 1); | |
6605 | 2290 verify_cp_class_type(bci, new_class_index, cp, CHECK_VERIFY(this)); |
0 | 2291 |
2292 // The method must be an <init> method of the indicated class | |
2293 VerificationType new_class_type = cp_index_to_type( | |
2294 new_class_index, cp, CHECK_VERIFY(this)); | |
2295 if (!new_class_type.equals(ref_class_type)) { | |
6605 | 2296 verify_error(ErrorContext::bad_type(bci, |
2297 TypeOrigin::cp(new_class_index, new_class_type), | |
2298 TypeOrigin::cp(ref_class_index, ref_class_type)), | |
2299 "Call to wrong <init> method"); | |
0 | 2300 return; |
2301 } | |
2302 // According to the VM spec, if the referent class is a superclass of the | |
2303 // current class, and is in a different runtime package, and the method is | |
2304 // protected, then the objectref must be the current class or a subclass | |
2305 // of the current class. | |
2306 VerificationType objectref_type = new_class_type; | |
2307 if (name_in_supers(ref_class_type.name(), current_class())) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6608
diff
changeset
|
2308 Klass* ref_klass = load_class( |
0 | 2309 ref_class_type.name(), CHECK_VERIFY(this)); |
6725
da91efe96a93
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6608
diff
changeset
|
2310 Method* m = InstanceKlass::cast(ref_klass)->uncached_lookup_method( |
0 | 2311 vmSymbols::object_initializer_name(), |
18007 | 2312 cp->signature_ref_at(bcs->get_index_u2()), Klass::normal); |
17593
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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17583
diff
changeset
|
2313 // Do nothing if method is not found. Let resolution detect the error. |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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17583
diff
changeset
|
2314 if (m != NULL) { |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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17583
diff
changeset
|
2315 instanceKlassHandle mh(THREAD, m->method_holder()); |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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17583
diff
changeset
|
2316 if (m->is_protected() && !mh->is_same_class_package(_klass())) { |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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17583
diff
changeset
|
2317 bool assignable = current_type().is_assignable_from( |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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diff
changeset
|
2318 objectref_type, this, CHECK_VERIFY(this)); |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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17583
diff
changeset
|
2319 if (!assignable) { |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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17583
diff
changeset
|
2320 verify_error(ErrorContext::bad_type(bci, |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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diff
changeset
|
2321 TypeOrigin::cp(new_class_index, objectref_type), |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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17583
diff
changeset
|
2322 TypeOrigin::implicit(current_type())), |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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17583
diff
changeset
|
2323 "Bad access to protected <init> method"); |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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17583
diff
changeset
|
2324 return; |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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17583
diff
changeset
|
2325 } |
0 | 2326 } |
2327 } | |
2328 } | |
2329 current_frame->initialize_object(type, new_class_type); | |
2330 } else { | |
6605 | 2331 verify_error(ErrorContext::bad_type(bci, current_frame->stack_top_ctx()), |
2332 "Bad operand type when invoking <init>"); | |
0 | 2333 return; |
2334 } | |
2335 } | |
2336 | |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2337 bool ClassVerifier::is_same_or_direct_interface( |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2338 instanceKlassHandle klass, |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2339 VerificationType klass_type, |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2340 VerificationType ref_class_type) { |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2341 if (ref_class_type.equals(klass_type)) return true; |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2342 Array<Klass*>* local_interfaces = klass->local_interfaces(); |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2343 if (local_interfaces != NULL) { |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2344 for (int x = 0; x < local_interfaces->length(); x++) { |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2345 Klass* k = local_interfaces->at(x); |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2346 assert (k != NULL && k->is_interface(), "invalid interface"); |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2347 if (ref_class_type.equals(VerificationType::reference_type(k->name()))) { |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2348 return true; |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2349 } |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2350 } |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2351 } |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2352 return false; |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2353 } |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2354 |
0 | 2355 void ClassVerifier::verify_invoke_instructions( |
2356 RawBytecodeStream* bcs, u4 code_length, StackMapFrame* current_frame, | |
2357 bool *this_uninit, VerificationType return_type, | |
2358 constantPoolHandle cp, TRAPS) { | |
2359 // Make sure the constant pool item is the right type | |
1565 | 2360 u2 index = bcs->get_index_u2(); |
2361 Bytecodes::Code opcode = bcs->raw_code(); | |
6934 | 2362 unsigned int types; |
2363 switch (opcode) { | |
2364 case Bytecodes::_invokeinterface: | |
2365 types = 1 << JVM_CONSTANT_InterfaceMethodref; | |
2366 break; | |
2367 case Bytecodes::_invokedynamic: | |
2368 types = 1 << JVM_CONSTANT_InvokeDynamic; | |
2369 break; | |
2370 case Bytecodes::_invokespecial: | |
9066
09b0d3e9ba6c
8011671: JCK tests on static interface methods fail under b84: Illegal type at constant pool entry 5
bharadwaj
parents:
8819
diff
changeset
|
2371 case Bytecodes::_invokestatic: |
09b0d3e9ba6c
8011671: JCK tests on static interface methods fail under b84: Illegal type at constant pool entry 5
bharadwaj
parents:
8819
diff
changeset
|
2372 types = (_klass->major_version() < STATIC_METHOD_IN_INTERFACE_MAJOR_VERSION) ? |
09b0d3e9ba6c
8011671: JCK tests on static interface methods fail under b84: Illegal type at constant pool entry 5
bharadwaj
parents:
8819
diff
changeset
|
2373 (1 << JVM_CONSTANT_Methodref) : |
09b0d3e9ba6c
8011671: JCK tests on static interface methods fail under b84: Illegal type at constant pool entry 5
bharadwaj
parents:
8819
diff
changeset
|
2374 ((1 << JVM_CONSTANT_InterfaceMethodref) | (1 << JVM_CONSTANT_Methodref)); |
09b0d3e9ba6c
8011671: JCK tests on static interface methods fail under b84: Illegal type at constant pool entry 5
bharadwaj
parents:
8819
diff
changeset
|
2375 break; |
6934 | 2376 default: |
2377 types = 1 << JVM_CONSTANT_Methodref; | |
2378 } | |
6605 | 2379 verify_cp_type(bcs->bci(), index, cp, types, CHECK_VERIFY(this)); |
0 | 2380 |
2381 // Get method name and signature | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2382 Symbol* method_name = cp->name_ref_at(index); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2383 Symbol* method_sig = cp->signature_ref_at(index); |
0 | 2384 |
2385 if (!SignatureVerifier::is_valid_method_signature(method_sig)) { | |
2386 class_format_error( | |
2387 "Invalid method signature in class %s referenced " | |
2388 "from constant pool index %d", _klass->external_name(), index); | |
2389 return; | |
2390 } | |
2391 | |
2392 // Get referenced class type | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2393 VerificationType ref_class_type; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2394 if (opcode == Bytecodes::_invokedynamic) { |
1602 | 2395 if (!EnableInvokeDynamic || |
2396 _klass->major_version() < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { | |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2397 if (!EnableInvokeDynamic) { |
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2398 class_format_error("invokedynamic instructions not enabled in this JVM"); |
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2399 } else { |
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2400 class_format_error("invokedynamic instructions not supported by this class file version (%d), class %s", |
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2401 _klass->major_version(), _klass->external_name()); |
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2402 } |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2403 return; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2404 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2405 } else { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2406 ref_class_type = cp_ref_index_to_type(index, cp, CHECK_VERIFY(this)); |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2407 } |
0 | 2408 |
2409 // For a small signature length, we just allocate 128 bytes instead | |
2410 // of parsing the signature once to find its size. | |
2411 // -3 is for '(', ')' and return descriptor; multiply by 2 is for | |
2412 // longs/doubles to be consertive. | |
2413 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
2414 "buffer type must match VerificationType size"); | |
2415 uintptr_t on_stack_sig_types_buffer[128]; | |
2416 // If we make a VerificationType[128] array directly, the compiler calls | |
2417 // to the c-runtime library to do the allocation instead of just | |
2418 // stack allocating it. Plus it would run constructors. This shows up | |
2419 // in performance profiles. | |
2420 | |
2421 VerificationType* sig_types; | |
2422 int size = (method_sig->utf8_length() - 3) * 2; | |
2423 if (size > 128) { | |
2424 // Long and double occupies two slots here. | |
2425 ArgumentSizeComputer size_it(method_sig); | |
2426 size = size_it.size(); | |
2427 sig_types = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, VerificationType, size); | |
2428 } else{ | |
2429 sig_types = (VerificationType*)on_stack_sig_types_buffer; | |
2430 } | |
2431 SignatureStream sig_stream(method_sig); | |
2432 int sig_i = 0; | |
2433 while (!sig_stream.at_return_type()) { | |
2434 sig_i += change_sig_to_verificationType( | |
2435 &sig_stream, &sig_types[sig_i], CHECK_VERIFY(this)); | |
2436 sig_stream.next(); | |
2437 } | |
2438 int nargs = sig_i; | |
2439 | |
2440 #ifdef ASSERT | |
2441 { | |
2442 ArgumentSizeComputer size_it(method_sig); | |
2443 assert(nargs == size_it.size(), "Argument sizes do not match"); | |
2444 assert(nargs <= (method_sig->utf8_length() - 3) * 2, "estimate of max size isn't conservative enough"); | |
2445 } | |
2446 #endif | |
2447 | |
2448 // Check instruction operands | |
2449 u2 bci = bcs->bci(); | |
2450 if (opcode == Bytecodes::_invokeinterface) { | |
2451 address bcp = bcs->bcp(); | |
2452 // 4905268: count operand in invokeinterface should be nargs+1, not nargs. | |
2453 // JSR202 spec: The count operand of an invokeinterface instruction is valid if it is | |
2454 // the difference between the size of the operand stack before and after the instruction | |
2455 // executes. | |
2456 if (*(bcp+3) != (nargs+1)) { | |
6605 | 2457 verify_error(ErrorContext::bad_code(bci), |
2458 "Inconsistent args count operand in invokeinterface"); | |
0 | 2459 return; |
2460 } | |
2461 if (*(bcp+4) != 0) { | |
6605 | 2462 verify_error(ErrorContext::bad_code(bci), |
2463 "Fourth operand byte of invokeinterface must be zero"); | |
0 | 2464 return; |
2465 } | |
2466 } | |
2467 | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2468 if (opcode == Bytecodes::_invokedynamic) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2469 address bcp = bcs->bcp(); |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2470 if (*(bcp+3) != 0 || *(bcp+4) != 0) { |
6605 | 2471 verify_error(ErrorContext::bad_code(bci), |
2472 "Third and fourth operand bytes of invokedynamic must be zero"); | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2473 return; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2474 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2475 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2476 |
0 | 2477 if (method_name->byte_at(0) == '<') { |
2478 // Make sure <init> can only be invoked by invokespecial | |
2479 if (opcode != Bytecodes::_invokespecial || | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2480 method_name != vmSymbols::object_initializer_name()) { |
6605 | 2481 verify_error(ErrorContext::bad_code(bci), |
2482 "Illegal call to internal method"); | |
0 | 2483 return; |
2484 } | |
2485 } else if (opcode == Bytecodes::_invokespecial | |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2486 && !is_same_or_direct_interface(current_class(), current_type(), ref_class_type) |
0 | 2487 && !ref_class_type.equals(VerificationType::reference_type( |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6608
diff
changeset
|
2488 current_class()->super()->name()))) { |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2489 bool subtype = false; |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2490 bool have_imr_indirect = cp->tag_at(index).value() == JVM_CONSTANT_InterfaceMethodref; |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2491 if (!current_class()->is_anonymous()) { |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2492 subtype = ref_class_type.is_assignable_from( |
18052 | 2493 current_type(), this, false, CHECK_VERIFY(this)); |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2494 } else { |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2495 VerificationType host_klass_type = |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2496 VerificationType::reference_type(current_class()->host_klass()->name()); |
18052 | 2497 subtype = ref_class_type.is_assignable_from(host_klass_type, this, false, CHECK_VERIFY(this)); |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2498 |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2499 // If invokespecial of IMR, need to recheck for same or |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2500 // direct interface relative to the host class |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2501 have_imr_indirect = (have_imr_indirect && |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2502 !is_same_or_direct_interface( |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2503 InstanceKlass::cast(current_class()->host_klass()), |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2504 host_klass_type, ref_class_type)); |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2505 } |
0 | 2506 if (!subtype) { |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2507 verify_error(ErrorContext::bad_code(bci), |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2508 "Bad invokespecial instruction: " |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2509 "current class isn't assignable to reference class."); |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2510 return; |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2511 } else if (have_imr_indirect) { |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2512 verify_error(ErrorContext::bad_code(bci), |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2513 "Bad invokespecial instruction: " |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2514 "interface method reference is in an indirect superinterface."); |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2515 return; |
0 | 2516 } |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2517 |
0 | 2518 } |
2519 // Match method descriptor with operand stack | |
2520 for (int i = nargs - 1; i >= 0; i--) { // Run backwards | |
2521 current_frame->pop_stack(sig_types[i], CHECK_VERIFY(this)); | |
2522 } | |
2523 // Check objectref on operand stack | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2524 if (opcode != Bytecodes::_invokestatic && |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2525 opcode != Bytecodes::_invokedynamic) { |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2526 if (method_name == vmSymbols::object_initializer_name()) { // <init> method |
6605 | 2527 verify_invoke_init(bcs, index, ref_class_type, current_frame, |
0 | 2528 code_length, this_uninit, cp, CHECK_VERIFY(this)); |
2529 } else { // other methods | |
2530 // Ensures that target class is assignable to method class. | |
2531 if (opcode == Bytecodes::_invokespecial) { | |
12827
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2532 if (!current_class()->is_anonymous()) { |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2533 current_frame->pop_stack(current_type(), CHECK_VERIFY(this)); |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2534 } else { |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2535 // anonymous class invokespecial calls: check if the |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2536 // objectref is a subtype of the host_klass of the current class |
12827
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2537 // to allow an anonymous class to reference methods in the host_klass |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2538 VerificationType top = current_frame->pop_stack(CHECK_VERIFY(this)); |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2539 VerificationType hosttype = |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2540 VerificationType::reference_type(current_class()->host_klass()->name()); |
18052 | 2541 bool subtype = hosttype.is_assignable_from(top, this, false, CHECK_VERIFY(this)); |
12827
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2542 if (!subtype) { |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2543 verify_error( ErrorContext::bad_type(current_frame->offset(), |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2544 current_frame->stack_top_ctx(), |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2545 TypeOrigin::implicit(top)), |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2546 "Bad type on operand stack"); |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2547 return; |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2548 } |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2549 } |
0 | 2550 } else if (opcode == Bytecodes::_invokevirtual) { |
2551 VerificationType stack_object_type = | |
2552 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
2553 if (current_type() != stack_object_type) { | |
2554 assert(cp->cache() == NULL, "not rewritten yet"); | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2555 Symbol* ref_class_name = |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2556 cp->klass_name_at(cp->klass_ref_index_at(index)); |
0 | 2557 // See the comments in verify_field_instructions() for |
2558 // the rationale behind this. | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2559 if (name_in_supers(ref_class_name, current_class())) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6608
diff
changeset
|
2560 Klass* ref_class = load_class(ref_class_name, CHECK); |
0 | 2561 if (is_protected_access( |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2562 _klass, ref_class, method_name, method_sig, true)) { |
0 | 2563 // It's protected access, check if stack object is |
2564 // assignable to current class. | |
2565 bool is_assignable = current_type().is_assignable_from( | |
18052 | 2566 stack_object_type, this, true, CHECK_VERIFY(this)); |
0 | 2567 if (!is_assignable) { |
2568 if (ref_class_type.name() == vmSymbols::java_lang_Object() | |
2569 && stack_object_type.is_array() | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2570 && method_name == vmSymbols::clone_name()) { |
0 | 2571 // Special case: arrays pretend to implement public Object |
2572 // clone(). | |
2573 } else { | |
6605 | 2574 verify_error(ErrorContext::bad_type(bci, |
2575 current_frame->stack_top_ctx(), | |
2576 TypeOrigin::implicit(current_type())), | |
2577 "Bad access to protected data in invokevirtual"); | |
0 | 2578 return; |
2579 } | |
2580 } | |
2581 } | |
2582 } | |
2583 } | |
2584 } else { | |
2585 assert(opcode == Bytecodes::_invokeinterface, "Unexpected opcode encountered"); | |
2586 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
2587 } | |
2588 } | |
2589 } | |
2590 // Push the result type. | |
2591 if (sig_stream.type() != T_VOID) { | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2592 if (method_name == vmSymbols::object_initializer_name()) { |
0 | 2593 // <init> method must have a void return type |
6605 | 2594 /* Unreachable? Class file parser verifies that methods with '<' have |
2595 * void return */ | |
2596 verify_error(ErrorContext::bad_code(bci), | |
2597 "Return type must be void in <init> method"); | |
0 | 2598 return; |
2599 } | |
2600 VerificationType return_type[2]; | |
2601 int n = change_sig_to_verificationType( | |
2602 &sig_stream, return_type, CHECK_VERIFY(this)); | |
2603 for (int i = 0; i < n; i++) { | |
2604 current_frame->push_stack(return_type[i], CHECK_VERIFY(this)); // push types backwards | |
2605 } | |
2606 } | |
2607 } | |
2608 | |
2609 VerificationType ClassVerifier::get_newarray_type( | |
2610 u2 index, u2 bci, TRAPS) { | |
2611 const char* from_bt[] = { | |
2612 NULL, NULL, NULL, NULL, "[Z", "[C", "[F", "[D", "[B", "[S", "[I", "[J", | |
2613 }; | |
2614 if (index < T_BOOLEAN || index > T_LONG) { | |
6605 | 2615 verify_error(ErrorContext::bad_code(bci), "Illegal newarray instruction"); |
0 | 2616 return VerificationType::bogus_type(); |
2617 } | |
2618 | |
2619 // from_bt[index] contains the array signature which has a length of 2 | |
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2620 Symbol* sig = create_temporary_symbol( |
0 | 2621 from_bt[index], 2, CHECK_(VerificationType::bogus_type())); |
2622 return VerificationType::reference_type(sig); | |
2623 } | |
2624 | |
2625 void ClassVerifier::verify_anewarray( | |
6605 | 2626 u2 bci, u2 index, constantPoolHandle cp, |
2627 StackMapFrame* current_frame, TRAPS) { | |
2628 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); | |
0 | 2629 current_frame->pop_stack( |
2630 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2631 | |
2632 VerificationType component_type = | |
2633 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
2634 int length; | |
2635 char* arr_sig_str; | |
2636 if (component_type.is_array()) { // it's an array | |
2637 const char* component_name = component_type.name()->as_utf8(); | |
2638 // add one dimension to component | |
2639 length = (int)strlen(component_name) + 1; | |
2640 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
2641 arr_sig_str[0] = '['; | |
2642 strncpy(&arr_sig_str[1], component_name, length - 1); | |
2643 } else { // it's an object or interface | |
2644 const char* component_name = component_type.name()->as_utf8(); | |
2645 // add one dimension to component with 'L' prepended and ';' postpended. | |
2646 length = (int)strlen(component_name) + 3; | |
2647 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
2648 arr_sig_str[0] = '['; | |
2649 arr_sig_str[1] = 'L'; | |
2650 strncpy(&arr_sig_str[2], component_name, length - 2); | |
2651 arr_sig_str[length - 1] = ';'; | |
2652 } | |
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2653 Symbol* arr_sig = create_temporary_symbol( |
0 | 2654 arr_sig_str, length, CHECK_VERIFY(this)); |
2655 VerificationType new_array_type = VerificationType::reference_type(arr_sig); | |
2656 current_frame->push_stack(new_array_type, CHECK_VERIFY(this)); | |
2657 } | |
2658 | |
2659 void ClassVerifier::verify_iload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2660 current_frame->get_local( | |
2661 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2662 current_frame->push_stack( | |
2663 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2664 } | |
2665 | |
2666 void ClassVerifier::verify_lload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2667 current_frame->get_local_2( | |
2668 index, VerificationType::long_type(), | |
2669 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
2670 current_frame->push_stack_2( | |
2671 VerificationType::long_type(), | |
2672 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
2673 } | |
2674 | |
2675 void ClassVerifier::verify_fload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2676 current_frame->get_local( | |
2677 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
2678 current_frame->push_stack( | |
2679 VerificationType::float_type(), CHECK_VERIFY(this)); | |
2680 } | |
2681 | |
2682 void ClassVerifier::verify_dload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2683 current_frame->get_local_2( | |
2684 index, VerificationType::double_type(), | |
2685 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
2686 current_frame->push_stack_2( | |
2687 VerificationType::double_type(), | |
2688 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
2689 } | |
2690 | |
2691 void ClassVerifier::verify_aload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2692 VerificationType type = current_frame->get_local( | |
2693 index, VerificationType::reference_check(), CHECK_VERIFY(this)); | |
2694 current_frame->push_stack(type, CHECK_VERIFY(this)); | |
2695 } | |
2696 | |
2697 void ClassVerifier::verify_istore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2698 current_frame->pop_stack( | |
2699 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2700 current_frame->set_local( | |
2701 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2702 } | |
2703 | |
2704 void ClassVerifier::verify_lstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2705 current_frame->pop_stack_2( | |
2706 VerificationType::long2_type(), | |
2707 VerificationType::long_type(), CHECK_VERIFY(this)); | |
2708 current_frame->set_local_2( | |
2709 index, VerificationType::long_type(), | |
2710 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
2711 } | |
2712 | |
2713 void ClassVerifier::verify_fstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2714 current_frame->pop_stack(VerificationType::float_type(), CHECK_VERIFY(this)); | |
2715 current_frame->set_local( | |
2716 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
2717 } | |
2718 | |
2719 void ClassVerifier::verify_dstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2720 current_frame->pop_stack_2( | |
2721 VerificationType::double2_type(), | |
2722 VerificationType::double_type(), CHECK_VERIFY(this)); | |
2723 current_frame->set_local_2( | |
2724 index, VerificationType::double_type(), | |
2725 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
2726 } | |
2727 | |
2728 void ClassVerifier::verify_astore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2729 VerificationType type = current_frame->pop_stack( | |
2730 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
2731 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
2732 } | |
2733 | |
2734 void ClassVerifier::verify_iinc(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2735 VerificationType type = current_frame->get_local( | |
2736 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2737 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
2738 } | |
2739 | |
2740 void ClassVerifier::verify_return_value( | |
6605 | 2741 VerificationType return_type, VerificationType type, u2 bci, |
2742 StackMapFrame* current_frame, TRAPS) { | |
0 | 2743 if (return_type == VerificationType::bogus_type()) { |
6605 | 2744 verify_error(ErrorContext::bad_type(bci, |
2745 current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), | |
2746 "Method expects a return value"); | |
0 | 2747 return; |
2748 } | |
18052 | 2749 bool match = return_type.is_assignable_from(type, this, false, CHECK_VERIFY(this)); |
0 | 2750 if (!match) { |
6605 | 2751 verify_error(ErrorContext::bad_type(bci, |
2752 current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), | |
2753 "Bad return type"); | |
0 | 2754 return; |
2755 } | |
2756 } | |
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2757 |
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2758 // The verifier creates symbols which are substrings of Symbols. |
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2759 // These are stored in the verifier until the end of verification so that |
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2760 // they can be reference counted. |
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2761 Symbol* ClassVerifier::create_temporary_symbol(const Symbol *s, int begin, |
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2762 int end, TRAPS) { |
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2763 Symbol* sym = SymbolTable::new_symbol(s, begin, end, CHECK_NULL); |
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2764 _symbols->push(sym); |
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2765 return sym; |
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2766 } |
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2767 |
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2768 Symbol* ClassVerifier::create_temporary_symbol(const char *s, int length, TRAPS) { |
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2769 Symbol* sym = SymbolTable::new_symbol(s, length, CHECK_NULL); |
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2770 _symbols->push(sym); |
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2771 return sym; |
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2772 } |