Mercurial > hg > graal-compiler
annotate src/share/vm/classfile/verifier.cpp @ 20740:7c9925f21c25 jdk8u20-b31
8051012: Regression in verifier for <init> method call from inside of a branch
Summary: Fix stackmap matching for branches.
Reviewed-by: coleenp, lfoltan, acorn
author | hseigel |
---|---|
date | Sat, 02 Aug 2014 16:28:59 -0400 |
parents | d6fcbd1e1075 |
children | 7ebfc4557ca5 |
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 |
0 | 637 Bytecodes::Code opcode; |
638 while (!bcs.is_last_bytecode()) { | |
1570 | 639 // Check for recursive re-verification before each bytecode. |
640 if (was_recursively_verified()) return; | |
641 | |
0 | 642 opcode = bcs.raw_next(); |
643 u2 bci = bcs.bci(); | |
644 | |
645 // Set current frame's offset to bci | |
646 current_frame.set_offset(bci); | |
6605 | 647 current_frame.set_mark(); |
0 | 648 |
649 // Make sure every offset in stackmap table point to the beginning to | |
650 // an instruction. Match current_frame to stackmap_table entry with | |
651 // the same offset if exists. | |
652 stackmap_index = verify_stackmap_table( | |
653 stackmap_index, bci, ¤t_frame, &stackmap_table, | |
654 no_control_flow, CHECK_VERIFY(this)); | |
655 | |
6605 | 656 |
0 | 657 bool this_uninit = false; // Set to true when invokespecial <init> initialized 'this' |
658 | |
659 // Merge with the next instruction | |
660 { | |
661 u2 index; | |
662 int target; | |
663 VerificationType type, type2; | |
664 VerificationType atype; | |
665 | |
666 #ifndef PRODUCT | |
6605 | 667 if (VerboseVerification) { |
668 current_frame.print_on(tty); | |
0 | 669 tty->print_cr("offset = %d, opcode = %s", bci, Bytecodes::name(opcode)); |
670 } | |
671 #endif | |
672 | |
673 // Make sure wide instruction is in correct format | |
674 if (bcs.is_wide()) { | |
675 if (opcode != Bytecodes::_iinc && opcode != Bytecodes::_iload && | |
676 opcode != Bytecodes::_aload && opcode != Bytecodes::_lload && | |
677 opcode != Bytecodes::_istore && opcode != Bytecodes::_astore && | |
678 opcode != Bytecodes::_lstore && opcode != Bytecodes::_fload && | |
679 opcode != Bytecodes::_dload && opcode != Bytecodes::_fstore && | |
680 opcode != Bytecodes::_dstore) { | |
6605 | 681 /* Unreachable? RawBytecodeStream's raw_next() returns 'illegal' |
682 * if we encounter a wide instruction that modifies an invalid | |
683 * opcode (not one of the ones listed above) */ | |
684 verify_error(ErrorContext::bad_code(bci), "Bad wide instruction"); | |
0 | 685 return; |
686 } | |
687 } | |
688 | |
689 switch (opcode) { | |
690 case Bytecodes::_nop : | |
691 no_control_flow = false; break; | |
692 case Bytecodes::_aconst_null : | |
693 current_frame.push_stack( | |
694 VerificationType::null_type(), CHECK_VERIFY(this)); | |
695 no_control_flow = false; break; | |
696 case Bytecodes::_iconst_m1 : | |
697 case Bytecodes::_iconst_0 : | |
698 case Bytecodes::_iconst_1 : | |
699 case Bytecodes::_iconst_2 : | |
700 case Bytecodes::_iconst_3 : | |
701 case Bytecodes::_iconst_4 : | |
702 case Bytecodes::_iconst_5 : | |
703 current_frame.push_stack( | |
704 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
705 no_control_flow = false; break; | |
706 case Bytecodes::_lconst_0 : | |
707 case Bytecodes::_lconst_1 : | |
708 current_frame.push_stack_2( | |
709 VerificationType::long_type(), | |
710 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
711 no_control_flow = false; break; | |
712 case Bytecodes::_fconst_0 : | |
713 case Bytecodes::_fconst_1 : | |
714 case Bytecodes::_fconst_2 : | |
715 current_frame.push_stack( | |
716 VerificationType::float_type(), CHECK_VERIFY(this)); | |
717 no_control_flow = false; break; | |
718 case Bytecodes::_dconst_0 : | |
719 case Bytecodes::_dconst_1 : | |
720 current_frame.push_stack_2( | |
721 VerificationType::double_type(), | |
722 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
723 no_control_flow = false; break; | |
724 case Bytecodes::_sipush : | |
725 case Bytecodes::_bipush : | |
726 current_frame.push_stack( | |
727 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
728 no_control_flow = false; break; | |
729 case Bytecodes::_ldc : | |
730 verify_ldc( | |
1565 | 731 opcode, bcs.get_index_u1(), ¤t_frame, |
0 | 732 cp, bci, CHECK_VERIFY(this)); |
733 no_control_flow = false; break; | |
734 case Bytecodes::_ldc_w : | |
735 case Bytecodes::_ldc2_w : | |
736 verify_ldc( | |
1565 | 737 opcode, bcs.get_index_u2(), ¤t_frame, |
0 | 738 cp, bci, CHECK_VERIFY(this)); |
739 no_control_flow = false; break; | |
740 case Bytecodes::_iload : | |
741 verify_iload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
742 no_control_flow = false; break; | |
743 case Bytecodes::_iload_0 : | |
744 case Bytecodes::_iload_1 : | |
745 case Bytecodes::_iload_2 : | |
746 case Bytecodes::_iload_3 : | |
747 index = opcode - Bytecodes::_iload_0; | |
748 verify_iload(index, ¤t_frame, CHECK_VERIFY(this)); | |
749 no_control_flow = false; break; | |
750 case Bytecodes::_lload : | |
751 verify_lload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
752 no_control_flow = false; break; | |
753 case Bytecodes::_lload_0 : | |
754 case Bytecodes::_lload_1 : | |
755 case Bytecodes::_lload_2 : | |
756 case Bytecodes::_lload_3 : | |
757 index = opcode - Bytecodes::_lload_0; | |
758 verify_lload(index, ¤t_frame, CHECK_VERIFY(this)); | |
759 no_control_flow = false; break; | |
760 case Bytecodes::_fload : | |
761 verify_fload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
762 no_control_flow = false; break; | |
763 case Bytecodes::_fload_0 : | |
764 case Bytecodes::_fload_1 : | |
765 case Bytecodes::_fload_2 : | |
766 case Bytecodes::_fload_3 : | |
767 index = opcode - Bytecodes::_fload_0; | |
768 verify_fload(index, ¤t_frame, CHECK_VERIFY(this)); | |
769 no_control_flow = false; break; | |
770 case Bytecodes::_dload : | |
771 verify_dload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
772 no_control_flow = false; break; | |
773 case Bytecodes::_dload_0 : | |
774 case Bytecodes::_dload_1 : | |
775 case Bytecodes::_dload_2 : | |
776 case Bytecodes::_dload_3 : | |
777 index = opcode - Bytecodes::_dload_0; | |
778 verify_dload(index, ¤t_frame, CHECK_VERIFY(this)); | |
779 no_control_flow = false; break; | |
780 case Bytecodes::_aload : | |
781 verify_aload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
782 no_control_flow = false; break; | |
783 case Bytecodes::_aload_0 : | |
784 case Bytecodes::_aload_1 : | |
785 case Bytecodes::_aload_2 : | |
786 case Bytecodes::_aload_3 : | |
787 index = opcode - Bytecodes::_aload_0; | |
788 verify_aload(index, ¤t_frame, CHECK_VERIFY(this)); | |
789 no_control_flow = false; break; | |
790 case Bytecodes::_iaload : | |
791 type = current_frame.pop_stack( | |
792 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
793 atype = current_frame.pop_stack( | |
794 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
795 if (!atype.is_int_array()) { | |
6605 | 796 verify_error(ErrorContext::bad_type(bci, |
797 current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), | |
798 bad_type_msg, "iaload"); | |
0 | 799 return; |
800 } | |
801 current_frame.push_stack( | |
802 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
803 no_control_flow = false; break; | |
804 case Bytecodes::_baload : | |
805 type = current_frame.pop_stack( | |
806 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
807 atype = current_frame.pop_stack( | |
808 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
809 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
6605 | 810 verify_error( |
811 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
812 bad_type_msg, "baload"); | |
0 | 813 return; |
814 } | |
815 current_frame.push_stack( | |
816 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
817 no_control_flow = false; break; | |
818 case Bytecodes::_caload : | |
819 type = current_frame.pop_stack( | |
820 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
821 atype = current_frame.pop_stack( | |
822 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
823 if (!atype.is_char_array()) { | |
6605 | 824 verify_error(ErrorContext::bad_type(bci, |
825 current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), | |
826 bad_type_msg, "caload"); | |
0 | 827 return; |
828 } | |
829 current_frame.push_stack( | |
830 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
831 no_control_flow = false; break; | |
832 case Bytecodes::_saload : | |
833 type = current_frame.pop_stack( | |
834 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
835 atype = current_frame.pop_stack( | |
836 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
837 if (!atype.is_short_array()) { | |
6605 | 838 verify_error(ErrorContext::bad_type(bci, |
839 current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), | |
840 bad_type_msg, "saload"); | |
0 | 841 return; |
842 } | |
843 current_frame.push_stack( | |
844 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
845 no_control_flow = false; break; | |
846 case Bytecodes::_laload : | |
847 type = current_frame.pop_stack( | |
848 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
849 atype = current_frame.pop_stack( | |
850 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
851 if (!atype.is_long_array()) { | |
6605 | 852 verify_error(ErrorContext::bad_type(bci, |
853 current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), | |
854 bad_type_msg, "laload"); | |
0 | 855 return; |
856 } | |
857 current_frame.push_stack_2( | |
858 VerificationType::long_type(), | |
859 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
860 no_control_flow = false; break; | |
861 case Bytecodes::_faload : | |
862 type = current_frame.pop_stack( | |
863 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
864 atype = current_frame.pop_stack( | |
865 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
866 if (!atype.is_float_array()) { | |
6605 | 867 verify_error(ErrorContext::bad_type(bci, |
868 current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), | |
869 bad_type_msg, "faload"); | |
0 | 870 return; |
871 } | |
872 current_frame.push_stack( | |
873 VerificationType::float_type(), CHECK_VERIFY(this)); | |
874 no_control_flow = false; break; | |
875 case Bytecodes::_daload : | |
876 type = current_frame.pop_stack( | |
877 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
878 atype = current_frame.pop_stack( | |
879 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
880 if (!atype.is_double_array()) { | |
6605 | 881 verify_error(ErrorContext::bad_type(bci, |
882 current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), | |
883 bad_type_msg, "daload"); | |
0 | 884 return; |
885 } | |
886 current_frame.push_stack_2( | |
887 VerificationType::double_type(), | |
888 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
889 no_control_flow = false; break; | |
890 case Bytecodes::_aaload : { | |
891 type = current_frame.pop_stack( | |
892 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
893 atype = current_frame.pop_stack( | |
894 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
895 if (!atype.is_reference_array()) { | |
6605 | 896 verify_error(ErrorContext::bad_type(bci, |
897 current_frame.stack_top_ctx(), | |
898 TypeOrigin::implicit(VerificationType::reference_check())), | |
899 bad_type_msg, "aaload"); | |
0 | 900 return; |
901 } | |
902 if (atype.is_null()) { | |
903 current_frame.push_stack( | |
904 VerificationType::null_type(), CHECK_VERIFY(this)); | |
905 } else { | |
906 VerificationType component = | |
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907 atype.get_component(this, CHECK_VERIFY(this)); |
0 | 908 current_frame.push_stack(component, CHECK_VERIFY(this)); |
909 } | |
910 no_control_flow = false; break; | |
911 } | |
912 case Bytecodes::_istore : | |
913 verify_istore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
914 no_control_flow = false; break; | |
915 case Bytecodes::_istore_0 : | |
916 case Bytecodes::_istore_1 : | |
917 case Bytecodes::_istore_2 : | |
918 case Bytecodes::_istore_3 : | |
919 index = opcode - Bytecodes::_istore_0; | |
920 verify_istore(index, ¤t_frame, CHECK_VERIFY(this)); | |
921 no_control_flow = false; break; | |
922 case Bytecodes::_lstore : | |
923 verify_lstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
924 no_control_flow = false; break; | |
925 case Bytecodes::_lstore_0 : | |
926 case Bytecodes::_lstore_1 : | |
927 case Bytecodes::_lstore_2 : | |
928 case Bytecodes::_lstore_3 : | |
929 index = opcode - Bytecodes::_lstore_0; | |
930 verify_lstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
931 no_control_flow = false; break; | |
932 case Bytecodes::_fstore : | |
933 verify_fstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
934 no_control_flow = false; break; | |
935 case Bytecodes::_fstore_0 : | |
936 case Bytecodes::_fstore_1 : | |
937 case Bytecodes::_fstore_2 : | |
938 case Bytecodes::_fstore_3 : | |
939 index = opcode - Bytecodes::_fstore_0; | |
940 verify_fstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
941 no_control_flow = false; break; | |
942 case Bytecodes::_dstore : | |
943 verify_dstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
944 no_control_flow = false; break; | |
945 case Bytecodes::_dstore_0 : | |
946 case Bytecodes::_dstore_1 : | |
947 case Bytecodes::_dstore_2 : | |
948 case Bytecodes::_dstore_3 : | |
949 index = opcode - Bytecodes::_dstore_0; | |
950 verify_dstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
951 no_control_flow = false; break; | |
952 case Bytecodes::_astore : | |
953 verify_astore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
954 no_control_flow = false; break; | |
955 case Bytecodes::_astore_0 : | |
956 case Bytecodes::_astore_1 : | |
957 case Bytecodes::_astore_2 : | |
958 case Bytecodes::_astore_3 : | |
959 index = opcode - Bytecodes::_astore_0; | |
960 verify_astore(index, ¤t_frame, CHECK_VERIFY(this)); | |
961 no_control_flow = false; break; | |
962 case Bytecodes::_iastore : | |
963 type = current_frame.pop_stack( | |
964 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
965 type2 = current_frame.pop_stack( | |
966 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
967 atype = current_frame.pop_stack( | |
968 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
969 if (!atype.is_int_array()) { | |
6605 | 970 verify_error(ErrorContext::bad_type(bci, |
971 current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), | |
972 bad_type_msg, "iastore"); | |
0 | 973 return; |
974 } | |
975 no_control_flow = false; break; | |
976 case Bytecodes::_bastore : | |
977 type = current_frame.pop_stack( | |
978 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
979 type2 = current_frame.pop_stack( | |
980 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
981 atype = current_frame.pop_stack( | |
982 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
983 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
6605 | 984 verify_error( |
985 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
986 bad_type_msg, "bastore"); | |
0 | 987 return; |
988 } | |
989 no_control_flow = false; break; | |
990 case Bytecodes::_castore : | |
991 current_frame.pop_stack( | |
992 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
993 current_frame.pop_stack( | |
994 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
995 atype = current_frame.pop_stack( | |
996 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
997 if (!atype.is_char_array()) { | |
6605 | 998 verify_error(ErrorContext::bad_type(bci, |
999 current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), | |
1000 bad_type_msg, "castore"); | |
0 | 1001 return; |
1002 } | |
1003 no_control_flow = false; break; | |
1004 case Bytecodes::_sastore : | |
1005 current_frame.pop_stack( | |
1006 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1007 current_frame.pop_stack( | |
1008 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1009 atype = current_frame.pop_stack( | |
1010 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1011 if (!atype.is_short_array()) { | |
6605 | 1012 verify_error(ErrorContext::bad_type(bci, |
1013 current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), | |
1014 bad_type_msg, "sastore"); | |
0 | 1015 return; |
1016 } | |
1017 no_control_flow = false; break; | |
1018 case Bytecodes::_lastore : | |
1019 current_frame.pop_stack_2( | |
1020 VerificationType::long2_type(), | |
1021 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1022 current_frame.pop_stack( | |
1023 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1024 atype = current_frame.pop_stack( | |
1025 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1026 if (!atype.is_long_array()) { | |
6605 | 1027 verify_error(ErrorContext::bad_type(bci, |
1028 current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), | |
1029 bad_type_msg, "lastore"); | |
0 | 1030 return; |
1031 } | |
1032 no_control_flow = false; break; | |
1033 case Bytecodes::_fastore : | |
1034 current_frame.pop_stack( | |
1035 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1036 current_frame.pop_stack | |
1037 (VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1038 atype = current_frame.pop_stack( | |
1039 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1040 if (!atype.is_float_array()) { | |
6605 | 1041 verify_error(ErrorContext::bad_type(bci, |
1042 current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), | |
1043 bad_type_msg, "fastore"); | |
0 | 1044 return; |
1045 } | |
1046 no_control_flow = false; break; | |
1047 case Bytecodes::_dastore : | |
1048 current_frame.pop_stack_2( | |
1049 VerificationType::double2_type(), | |
1050 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1051 current_frame.pop_stack( | |
1052 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1053 atype = current_frame.pop_stack( | |
1054 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1055 if (!atype.is_double_array()) { | |
6605 | 1056 verify_error(ErrorContext::bad_type(bci, |
1057 current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), | |
1058 bad_type_msg, "dastore"); | |
0 | 1059 return; |
1060 } | |
1061 no_control_flow = false; break; | |
1062 case Bytecodes::_aastore : | |
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|
1063 type = current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
0 | 1064 type2 = current_frame.pop_stack( |
1065 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1066 atype = current_frame.pop_stack( | |
1067 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1068 // more type-checking is done at runtime | |
1069 if (!atype.is_reference_array()) { | |
6605 | 1070 verify_error(ErrorContext::bad_type(bci, |
1071 current_frame.stack_top_ctx(), | |
1072 TypeOrigin::implicit(VerificationType::reference_check())), | |
1073 bad_type_msg, "aastore"); | |
0 | 1074 return; |
1075 } | |
1076 // 4938384: relaxed constraint in JVMS 3nd edition. | |
1077 no_control_flow = false; break; | |
1078 case Bytecodes::_pop : | |
1079 current_frame.pop_stack( | |
1080 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1081 no_control_flow = false; break; | |
1082 case Bytecodes::_pop2 : | |
1083 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1084 if (type.is_category1()) { | |
1085 current_frame.pop_stack( | |
1086 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1087 } else if (type.is_category2_2nd()) { | |
1088 current_frame.pop_stack( | |
1089 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
1090 } else { | |
6605 | 1091 /* Unreachable? Would need a category2_1st on TOS |
1092 * which does not appear possible. */ | |
1093 verify_error( | |
1094 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
1095 bad_type_msg, "pop2"); | |
0 | 1096 return; |
1097 } | |
1098 no_control_flow = false; break; | |
1099 case Bytecodes::_dup : | |
1100 type = current_frame.pop_stack( | |
1101 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1102 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1103 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1104 no_control_flow = false; break; | |
1105 case Bytecodes::_dup_x1 : | |
1106 type = current_frame.pop_stack( | |
1107 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1108 type2 = current_frame.pop_stack( | |
1109 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1110 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1111 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1112 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1113 no_control_flow = false; break; | |
1114 case Bytecodes::_dup_x2 : | |
1115 { | |
1116 VerificationType type3; | |
1117 type = current_frame.pop_stack( | |
1118 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1119 type2 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1120 if (type2.is_category1()) { | |
1121 type3 = current_frame.pop_stack( | |
1122 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1123 } else if (type2.is_category2_2nd()) { | |
1124 type3 = current_frame.pop_stack( | |
1125 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
1126 } else { | |
6605 | 1127 /* Unreachable? Would need a category2_1st at stack depth 2 with |
1128 * a category1 on TOS which does not appear possible. */ | |
1129 verify_error(ErrorContext::bad_type( | |
1130 bci, current_frame.stack_top_ctx()), bad_type_msg, "dup_x2"); | |
0 | 1131 return; |
1132 } | |
1133 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1134 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
1135 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1136 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1137 no_control_flow = false; break; | |
1138 } | |
1139 case Bytecodes::_dup2 : | |
1140 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1141 if (type.is_category1()) { | |
1142 type2 = current_frame.pop_stack( | |
1143 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1144 } else if (type.is_category2_2nd()) { | |
1145 type2 = current_frame.pop_stack( | |
1146 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
1147 } else { | |
6605 | 1148 /* Unreachable? Would need a category2_1st on TOS which does not |
1149 * appear possible. */ | |
1150 verify_error( | |
1151 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
1152 bad_type_msg, "dup2"); | |
0 | 1153 return; |
1154 } | |
1155 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1156 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1157 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1158 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1159 no_control_flow = false; break; | |
1160 case Bytecodes::_dup2_x1 : | |
1161 { | |
1162 VerificationType type3; | |
1163 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1164 if (type.is_category1()) { | |
1165 type2 = current_frame.pop_stack( | |
1166 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
6605 | 1167 } else if (type.is_category2_2nd()) { |
1168 type2 = current_frame.pop_stack( | |
1169 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
0 | 1170 } else { |
6605 | 1171 /* Unreachable? Would need a category2_1st on TOS which does |
1172 * not appear possible. */ | |
1173 verify_error( | |
1174 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
1175 bad_type_msg, "dup2_x1"); | |
0 | 1176 return; |
1177 } | |
1178 type3 = current_frame.pop_stack( | |
1179 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1180 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1181 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1182 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
1183 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1184 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1185 no_control_flow = false; break; | |
1186 } | |
1187 case Bytecodes::_dup2_x2 : | |
1188 { | |
1189 VerificationType type3, type4; | |
1190 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1191 if (type.is_category1()) { | |
1192 type2 = current_frame.pop_stack( | |
1193 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1194 } else if (type.is_category2_2nd()) { | |
1195 type2 = current_frame.pop_stack( | |
1196 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
1197 } else { | |
6605 | 1198 /* Unreachable? Would need a category2_1st on TOS which does |
1199 * not appear possible. */ | |
1200 verify_error( | |
1201 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
1202 bad_type_msg, "dup2_x2"); | |
0 | 1203 return; |
1204 } | |
1205 type3 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1206 if (type3.is_category1()) { | |
1207 type4 = current_frame.pop_stack( | |
1208 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1209 } else if (type3.is_category2_2nd()) { | |
1210 type4 = current_frame.pop_stack( | |
1211 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
1212 } else { | |
6605 | 1213 /* Unreachable? Would need a category2_1st on TOS after popping |
1214 * a long/double or two category 1's, which does not | |
1215 * appear possible. */ | |
1216 verify_error( | |
1217 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
1218 bad_type_msg, "dup2_x2"); | |
0 | 1219 return; |
1220 } | |
1221 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1222 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1223 current_frame.push_stack(type4, CHECK_VERIFY(this)); | |
1224 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
1225 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1226 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1227 no_control_flow = false; break; | |
1228 } | |
1229 case Bytecodes::_swap : | |
1230 type = current_frame.pop_stack( | |
1231 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1232 type2 = current_frame.pop_stack( | |
1233 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1234 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1235 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1236 no_control_flow = false; break; | |
1237 case Bytecodes::_iadd : | |
1238 case Bytecodes::_isub : | |
1239 case Bytecodes::_imul : | |
1240 case Bytecodes::_idiv : | |
1241 case Bytecodes::_irem : | |
1242 case Bytecodes::_ishl : | |
1243 case Bytecodes::_ishr : | |
1244 case Bytecodes::_iushr : | |
1245 case Bytecodes::_ior : | |
1246 case Bytecodes::_ixor : | |
1247 case Bytecodes::_iand : | |
1248 current_frame.pop_stack( | |
1249 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1250 // fall through | |
1251 case Bytecodes::_ineg : | |
1252 current_frame.pop_stack( | |
1253 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1254 current_frame.push_stack( | |
1255 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1256 no_control_flow = false; break; | |
1257 case Bytecodes::_ladd : | |
1258 case Bytecodes::_lsub : | |
1259 case Bytecodes::_lmul : | |
1260 case Bytecodes::_ldiv : | |
1261 case Bytecodes::_lrem : | |
1262 case Bytecodes::_land : | |
1263 case Bytecodes::_lor : | |
1264 case Bytecodes::_lxor : | |
1265 current_frame.pop_stack_2( | |
1266 VerificationType::long2_type(), | |
1267 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1268 // fall through | |
1269 case Bytecodes::_lneg : | |
1270 current_frame.pop_stack_2( | |
1271 VerificationType::long2_type(), | |
1272 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1273 current_frame.push_stack_2( | |
1274 VerificationType::long_type(), | |
1275 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1276 no_control_flow = false; break; | |
1277 case Bytecodes::_lshl : | |
1278 case Bytecodes::_lshr : | |
1279 case Bytecodes::_lushr : | |
1280 current_frame.pop_stack( | |
1281 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1282 current_frame.pop_stack_2( | |
1283 VerificationType::long2_type(), | |
1284 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1285 current_frame.push_stack_2( | |
1286 VerificationType::long_type(), | |
1287 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1288 no_control_flow = false; break; | |
1289 case Bytecodes::_fadd : | |
1290 case Bytecodes::_fsub : | |
1291 case Bytecodes::_fmul : | |
1292 case Bytecodes::_fdiv : | |
1293 case Bytecodes::_frem : | |
1294 current_frame.pop_stack( | |
1295 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1296 // fall through | |
1297 case Bytecodes::_fneg : | |
1298 current_frame.pop_stack( | |
1299 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1300 current_frame.push_stack( | |
1301 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1302 no_control_flow = false; break; | |
1303 case Bytecodes::_dadd : | |
1304 case Bytecodes::_dsub : | |
1305 case Bytecodes::_dmul : | |
1306 case Bytecodes::_ddiv : | |
1307 case Bytecodes::_drem : | |
1308 current_frame.pop_stack_2( | |
1309 VerificationType::double2_type(), | |
1310 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1311 // fall through | |
1312 case Bytecodes::_dneg : | |
1313 current_frame.pop_stack_2( | |
1314 VerificationType::double2_type(), | |
1315 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1316 current_frame.push_stack_2( | |
1317 VerificationType::double_type(), | |
1318 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
1319 no_control_flow = false; break; | |
1320 case Bytecodes::_iinc : | |
1321 verify_iinc(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
1322 no_control_flow = false; break; | |
1323 case Bytecodes::_i2l : | |
1324 type = current_frame.pop_stack( | |
1325 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1326 current_frame.push_stack_2( | |
1327 VerificationType::long_type(), | |
1328 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1329 no_control_flow = false; break; | |
1330 case Bytecodes::_l2i : | |
1331 current_frame.pop_stack_2( | |
1332 VerificationType::long2_type(), | |
1333 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1334 current_frame.push_stack( | |
1335 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1336 no_control_flow = false; break; | |
1337 case Bytecodes::_i2f : | |
1338 current_frame.pop_stack( | |
1339 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1340 current_frame.push_stack( | |
1341 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1342 no_control_flow = false; break; | |
1343 case Bytecodes::_i2d : | |
1344 current_frame.pop_stack( | |
1345 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1346 current_frame.push_stack_2( | |
1347 VerificationType::double_type(), | |
1348 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
1349 no_control_flow = false; break; | |
1350 case Bytecodes::_l2f : | |
1351 current_frame.pop_stack_2( | |
1352 VerificationType::long2_type(), | |
1353 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1354 current_frame.push_stack( | |
1355 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1356 no_control_flow = false; break; | |
1357 case Bytecodes::_l2d : | |
1358 current_frame.pop_stack_2( | |
1359 VerificationType::long2_type(), | |
1360 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1361 current_frame.push_stack_2( | |
1362 VerificationType::double_type(), | |
1363 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
1364 no_control_flow = false; break; | |
1365 case Bytecodes::_f2i : | |
1366 current_frame.pop_stack( | |
1367 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1368 current_frame.push_stack( | |
1369 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1370 no_control_flow = false; break; | |
1371 case Bytecodes::_f2l : | |
1372 current_frame.pop_stack( | |
1373 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1374 current_frame.push_stack_2( | |
1375 VerificationType::long_type(), | |
1376 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1377 no_control_flow = false; break; | |
1378 case Bytecodes::_f2d : | |
1379 current_frame.pop_stack( | |
1380 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1381 current_frame.push_stack_2( | |
1382 VerificationType::double_type(), | |
1383 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
1384 no_control_flow = false; break; | |
1385 case Bytecodes::_d2i : | |
1386 current_frame.pop_stack_2( | |
1387 VerificationType::double2_type(), | |
1388 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1389 current_frame.push_stack( | |
1390 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1391 no_control_flow = false; break; | |
1392 case Bytecodes::_d2l : | |
1393 current_frame.pop_stack_2( | |
1394 VerificationType::double2_type(), | |
1395 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1396 current_frame.push_stack_2( | |
1397 VerificationType::long_type(), | |
1398 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1399 no_control_flow = false; break; | |
1400 case Bytecodes::_d2f : | |
1401 current_frame.pop_stack_2( | |
1402 VerificationType::double2_type(), | |
1403 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1404 current_frame.push_stack( | |
1405 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1406 no_control_flow = false; break; | |
1407 case Bytecodes::_i2b : | |
1408 case Bytecodes::_i2c : | |
1409 case Bytecodes::_i2s : | |
1410 current_frame.pop_stack( | |
1411 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1412 current_frame.push_stack( | |
1413 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1414 no_control_flow = false; break; | |
1415 case Bytecodes::_lcmp : | |
1416 current_frame.pop_stack_2( | |
1417 VerificationType::long2_type(), | |
1418 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1419 current_frame.pop_stack_2( | |
1420 VerificationType::long2_type(), | |
1421 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1422 current_frame.push_stack( | |
1423 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1424 no_control_flow = false; break; | |
1425 case Bytecodes::_fcmpl : | |
1426 case Bytecodes::_fcmpg : | |
1427 current_frame.pop_stack( | |
1428 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1429 current_frame.pop_stack( | |
1430 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1431 current_frame.push_stack( | |
1432 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1433 no_control_flow = false; break; | |
1434 case Bytecodes::_dcmpl : | |
1435 case Bytecodes::_dcmpg : | |
1436 current_frame.pop_stack_2( | |
1437 VerificationType::double2_type(), | |
1438 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1439 current_frame.pop_stack_2( | |
1440 VerificationType::double2_type(), | |
1441 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1442 current_frame.push_stack( | |
1443 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1444 no_control_flow = false; break; | |
1445 case Bytecodes::_if_icmpeq: | |
1446 case Bytecodes::_if_icmpne: | |
1447 case Bytecodes::_if_icmplt: | |
1448 case Bytecodes::_if_icmpge: | |
1449 case Bytecodes::_if_icmpgt: | |
1450 case Bytecodes::_if_icmple: | |
1451 current_frame.pop_stack( | |
1452 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1453 // fall through | |
1454 case Bytecodes::_ifeq: | |
1455 case Bytecodes::_ifne: | |
1456 case Bytecodes::_iflt: | |
1457 case Bytecodes::_ifge: | |
1458 case Bytecodes::_ifgt: | |
1459 case Bytecodes::_ifle: | |
1460 current_frame.pop_stack( | |
1461 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1462 target = bcs.dest(); | |
1463 stackmap_table.check_jump_target( | |
1464 ¤t_frame, target, CHECK_VERIFY(this)); | |
1465 no_control_flow = false; break; | |
1466 case Bytecodes::_if_acmpeq : | |
1467 case Bytecodes::_if_acmpne : | |
1468 current_frame.pop_stack( | |
1469 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1470 // fall through | |
1471 case Bytecodes::_ifnull : | |
1472 case Bytecodes::_ifnonnull : | |
1473 current_frame.pop_stack( | |
1474 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1475 target = bcs.dest(); | |
1476 stackmap_table.check_jump_target | |
1477 (¤t_frame, target, CHECK_VERIFY(this)); | |
1478 no_control_flow = false; break; | |
1479 case Bytecodes::_goto : | |
1480 target = bcs.dest(); | |
1481 stackmap_table.check_jump_target( | |
1482 ¤t_frame, target, CHECK_VERIFY(this)); | |
1483 no_control_flow = true; break; | |
1484 case Bytecodes::_goto_w : | |
1485 target = bcs.dest_w(); | |
1486 stackmap_table.check_jump_target( | |
1487 ¤t_frame, target, CHECK_VERIFY(this)); | |
1488 no_control_flow = true; break; | |
1489 case Bytecodes::_tableswitch : | |
1490 case Bytecodes::_lookupswitch : | |
1491 verify_switch( | |
1492 &bcs, code_length, code_data, ¤t_frame, | |
1493 &stackmap_table, CHECK_VERIFY(this)); | |
1494 no_control_flow = true; break; | |
1495 case Bytecodes::_ireturn : | |
1496 type = current_frame.pop_stack( | |
1497 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
6605 | 1498 verify_return_value(return_type, type, bci, |
1499 ¤t_frame, CHECK_VERIFY(this)); | |
0 | 1500 no_control_flow = true; break; |
1501 case Bytecodes::_lreturn : | |
1502 type2 = current_frame.pop_stack( | |
1503 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1504 type = current_frame.pop_stack( | |
1505 VerificationType::long_type(), CHECK_VERIFY(this)); | |
6605 | 1506 verify_return_value(return_type, type, bci, |
1507 ¤t_frame, CHECK_VERIFY(this)); | |
0 | 1508 no_control_flow = true; break; |
1509 case Bytecodes::_freturn : | |
1510 type = current_frame.pop_stack( | |
1511 VerificationType::float_type(), CHECK_VERIFY(this)); | |
6605 | 1512 verify_return_value(return_type, type, bci, |
1513 ¤t_frame, CHECK_VERIFY(this)); | |
0 | 1514 no_control_flow = true; break; |
1515 case Bytecodes::_dreturn : | |
1516 type2 = current_frame.pop_stack( | |
1517 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
1518 type = current_frame.pop_stack( | |
1519 VerificationType::double_type(), CHECK_VERIFY(this)); | |
6605 | 1520 verify_return_value(return_type, type, bci, |
1521 ¤t_frame, CHECK_VERIFY(this)); | |
0 | 1522 no_control_flow = true; break; |
1523 case Bytecodes::_areturn : | |
1524 type = current_frame.pop_stack( | |
1525 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
6605 | 1526 verify_return_value(return_type, type, bci, |
1527 ¤t_frame, CHECK_VERIFY(this)); | |
0 | 1528 no_control_flow = true; break; |
1529 case Bytecodes::_return : | |
1530 if (return_type != VerificationType::bogus_type()) { | |
6605 | 1531 verify_error(ErrorContext::bad_code(bci), |
1532 "Method expects a return value"); | |
0 | 1533 return; |
1534 } | |
1535 // Make sure "this" has been initialized if current method is an | |
1536 // <init> | |
1537 if (_method->name() == vmSymbols::object_initializer_name() && | |
1538 current_frame.flag_this_uninit()) { | |
6605 | 1539 verify_error(ErrorContext::bad_code(bci), |
1540 "Constructor must call super() or this() " | |
1541 "before return"); | |
0 | 1542 return; |
1543 } | |
1544 no_control_flow = true; break; | |
1545 case Bytecodes::_getstatic : | |
1546 case Bytecodes::_putstatic : | |
1547 case Bytecodes::_getfield : | |
1548 case Bytecodes::_putfield : | |
1549 verify_field_instructions( | |
1550 &bcs, ¤t_frame, cp, CHECK_VERIFY(this)); | |
1551 no_control_flow = false; break; | |
1552 case Bytecodes::_invokevirtual : | |
1553 case Bytecodes::_invokespecial : | |
1554 case Bytecodes::_invokestatic : | |
1555 verify_invoke_instructions( | |
1556 &bcs, code_length, ¤t_frame, | |
1557 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
1558 no_control_flow = false; break; | |
1559 case Bytecodes::_invokeinterface : | |
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1560 case Bytecodes::_invokedynamic : |
0 | 1561 verify_invoke_instructions( |
1562 &bcs, code_length, ¤t_frame, | |
1563 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
1564 no_control_flow = false; break; | |
1565 case Bytecodes::_new : | |
1566 { | |
1565 | 1567 index = bcs.get_index_u2(); |
6605 | 1568 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
0 | 1569 VerificationType new_class_type = |
1570 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
1571 if (!new_class_type.is_object()) { | |
6605 | 1572 verify_error(ErrorContext::bad_type(bci, |
1573 TypeOrigin::cp(index, new_class_type)), | |
1574 "Illegal new instruction"); | |
0 | 1575 return; |
1576 } | |
1577 type = VerificationType::uninitialized_type(bci); | |
1578 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1579 no_control_flow = false; break; | |
1580 } | |
1581 case Bytecodes::_newarray : | |
1582 type = get_newarray_type(bcs.get_index(), bci, CHECK_VERIFY(this)); | |
1583 current_frame.pop_stack( | |
1584 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1585 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1586 no_control_flow = false; break; | |
1587 case Bytecodes::_anewarray : | |
1588 verify_anewarray( | |
6605 | 1589 bci, bcs.get_index_u2(), cp, ¤t_frame, CHECK_VERIFY(this)); |
0 | 1590 no_control_flow = false; break; |
1591 case Bytecodes::_arraylength : | |
1592 type = current_frame.pop_stack( | |
1593 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
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1594 if (!(type.is_null() || type.is_array())) { |
6605 | 1595 verify_error(ErrorContext::bad_type( |
1596 bci, current_frame.stack_top_ctx()), | |
1597 bad_type_msg, "arraylength"); | |
0 | 1598 } |
1599 current_frame.push_stack( | |
1600 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1601 no_control_flow = false; break; | |
1602 case Bytecodes::_checkcast : | |
1603 { | |
1565 | 1604 index = bcs.get_index_u2(); |
6605 | 1605 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
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1606 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
0 | 1607 VerificationType klass_type = cp_index_to_type( |
1608 index, cp, CHECK_VERIFY(this)); | |
1609 current_frame.push_stack(klass_type, CHECK_VERIFY(this)); | |
1610 no_control_flow = false; break; | |
1611 } | |
1612 case Bytecodes::_instanceof : { | |
1565 | 1613 index = bcs.get_index_u2(); |
6605 | 1614 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
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1615 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
0 | 1616 current_frame.push_stack( |
1617 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1618 no_control_flow = false; break; | |
1619 } | |
1620 case Bytecodes::_monitorenter : | |
1621 case Bytecodes::_monitorexit : | |
1622 current_frame.pop_stack( | |
1623 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1624 no_control_flow = false; break; | |
1625 case Bytecodes::_multianewarray : | |
1626 { | |
1565 | 1627 index = bcs.get_index_u2(); |
0 | 1628 u2 dim = *(bcs.bcp()+3); |
6605 | 1629 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
0 | 1630 VerificationType new_array_type = |
1631 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
1632 if (!new_array_type.is_array()) { | |
6605 | 1633 verify_error(ErrorContext::bad_type(bci, |
1634 TypeOrigin::cp(index, new_array_type)), | |
1635 "Illegal constant pool index in multianewarray instruction"); | |
0 | 1636 return; |
1637 } | |
1638 if (dim < 1 || new_array_type.dimensions() < dim) { | |
6605 | 1639 verify_error(ErrorContext::bad_code(bci), |
1640 "Illegal dimension in multianewarray instruction: %d", dim); | |
0 | 1641 return; |
1642 } | |
1643 for (int i = 0; i < dim; i++) { | |
1644 current_frame.pop_stack( | |
1645 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1646 } | |
1647 current_frame.push_stack(new_array_type, CHECK_VERIFY(this)); | |
1648 no_control_flow = false; break; | |
1649 } | |
1650 case Bytecodes::_athrow : | |
1651 type = VerificationType::reference_type( | |
1652 vmSymbols::java_lang_Throwable()); | |
1653 current_frame.pop_stack(type, CHECK_VERIFY(this)); | |
1654 no_control_flow = true; break; | |
1655 default: | |
1656 // We only need to check the valid bytecodes in class file. | |
1657 // And jsr and ret are not in the new class file format in JDK1.5. | |
6605 | 1658 verify_error(ErrorContext::bad_code(bci), |
1659 "Bad instruction: %02x", opcode); | |
0 | 1660 no_control_flow = false; |
1661 return; | |
1662 } // end switch | |
1663 } // end Merge with the next instruction | |
1664 | |
1665 // Look for possible jump target in exception handlers and see if it | |
1666 // matches current_frame | |
1667 if (bci >= ex_min && bci < ex_max) { | |
1668 verify_exception_handler_targets( | |
1669 bci, this_uninit, ¤t_frame, &stackmap_table, CHECK_VERIFY(this)); | |
1670 } | |
1671 } // end while | |
1672 | |
1673 // Make sure that control flow does not fall through end of the method | |
1674 if (!no_control_flow) { | |
6605 | 1675 verify_error(ErrorContext::bad_code(code_length), |
1676 "Control flow falls through code end"); | |
0 | 1677 return; |
1678 } | |
1679 } | |
1680 | |
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1681 #undef bad_type_message |
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1682 |
0 | 1683 char* ClassVerifier::generate_code_data(methodHandle m, u4 code_length, TRAPS) { |
1684 char* code_data = NEW_RESOURCE_ARRAY(char, code_length); | |
1685 memset(code_data, 0, sizeof(char) * code_length); | |
1686 RawBytecodeStream bcs(m); | |
1687 | |
1688 while (!bcs.is_last_bytecode()) { | |
1689 if (bcs.raw_next() != Bytecodes::_illegal) { | |
1690 int bci = bcs.bci(); | |
1565 | 1691 if (bcs.raw_code() == Bytecodes::_new) { |
0 | 1692 code_data[bci] = NEW_OFFSET; |
1693 } else { | |
1694 code_data[bci] = BYTECODE_OFFSET; | |
1695 } | |
1696 } else { | |
6605 | 1697 verify_error(ErrorContext::bad_code(bcs.bci()), "Bad instruction"); |
0 | 1698 return NULL; |
1699 } | |
1700 } | |
1701 | |
1702 return code_data; | |
1703 } | |
1704 | |
1705 void ClassVerifier::verify_exception_handler_table(u4 code_length, char* code_data, int& min, int& max, TRAPS) { | |
6213
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1706 ExceptionTable exhandlers(_method()); |
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1707 int exlength = exhandlers.length(); |
0 | 1708 constantPoolHandle cp (THREAD, _method->constants()); |
1709 | |
6213
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1710 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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1711 //reacquire the table in case a GC happened |
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1712 ExceptionTable exhandlers(_method()); |
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1713 u2 start_pc = exhandlers.start_pc(i); |
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1714 u2 end_pc = exhandlers.end_pc(i); |
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1715 u2 handler_pc = exhandlers.handler_pc(i); |
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1716 if (start_pc >= code_length || code_data[start_pc] == 0) { |
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|
1717 class_format_error("Illegal exception table start_pc %d", start_pc); |
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7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
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|
1718 return; |
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|
1719 } |
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|
1720 if (end_pc != code_length) { // special case: end_pc == code_length |
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1721 if (end_pc > code_length || code_data[end_pc] == 0) { |
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|
1722 class_format_error("Illegal exception table end_pc %d", end_pc); |
0 | 1723 return; |
1724 } | |
6213
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|
1725 } |
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|
1726 if (handler_pc >= code_length || code_data[handler_pc] == 0) { |
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7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
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1727 class_format_error("Illegal exception table handler_pc %d", handler_pc); |
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1728 return; |
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1729 } |
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1730 int catch_type_index = exhandlers.catch_type_index(i); |
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1731 if (catch_type_index != 0) { |
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1732 VerificationType catch_type = cp_index_to_type( |
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1733 catch_type_index, cp, CHECK_VERIFY(this)); |
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1734 VerificationType throwable = |
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1735 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
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1736 bool is_subclass = throwable.is_assignable_from( |
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1737 catch_type, this, CHECK_VERIFY(this)); |
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1738 if (!is_subclass) { |
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1739 // 4286534: should throw VerifyError according to recent spec change |
6605 | 1740 verify_error(ErrorContext::bad_type(handler_pc, |
1741 TypeOrigin::cp(catch_type_index, catch_type), | |
1742 TypeOrigin::implicit(throwable)), | |
1743 "Catch type is not a subclass " | |
1744 "of Throwable in exception handler %d", handler_pc); | |
0 | 1745 return; |
1746 } | |
1747 } | |
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1748 if (start_pc < min) min = start_pc; |
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1749 if (end_pc > max) max = end_pc; |
0 | 1750 } |
1751 } | |
1752 | |
1753 void ClassVerifier::verify_local_variable_table(u4 code_length, char* code_data, TRAPS) { | |
1754 int localvariable_table_length = _method()->localvariable_table_length(); | |
1755 if (localvariable_table_length > 0) { | |
1756 LocalVariableTableElement* table = _method()->localvariable_table_start(); | |
1757 for (int i = 0; i < localvariable_table_length; i++) { | |
1758 u2 start_bci = table[i].start_bci; | |
1759 u2 length = table[i].length; | |
1760 | |
1761 if (start_bci >= code_length || code_data[start_bci] == 0) { | |
1762 class_format_error( | |
1763 "Illegal local variable table start_pc %d", start_bci); | |
1764 return; | |
1765 } | |
1766 u4 end_bci = (u4)(start_bci + length); | |
1767 if (end_bci != code_length) { | |
1768 if (end_bci >= code_length || code_data[end_bci] == 0) { | |
1769 class_format_error( "Illegal local variable table length %d", length); | |
1770 return; | |
1771 } | |
1772 } | |
1773 } | |
1774 } | |
1775 } | |
1776 | |
1777 u2 ClassVerifier::verify_stackmap_table(u2 stackmap_index, u2 bci, | |
1778 StackMapFrame* current_frame, | |
1779 StackMapTable* stackmap_table, | |
1780 bool no_control_flow, TRAPS) { | |
1781 if (stackmap_index < stackmap_table->get_frame_count()) { | |
1782 u2 this_offset = stackmap_table->get_offset(stackmap_index); | |
1783 if (no_control_flow && this_offset > bci) { | |
6605 | 1784 verify_error(ErrorContext::missing_stackmap(bci), |
1785 "Expecting a stack map frame"); | |
0 | 1786 return 0; |
1787 } | |
1788 if (this_offset == bci) { | |
6605 | 1789 ErrorContext ctx; |
0 | 1790 // See if current stack map can be assigned to the frame in table. |
1791 // current_frame is the stackmap frame got from the last instruction. | |
1792 // If matched, current_frame will be updated by this method. | |
6605 | 1793 bool matches = stackmap_table->match_stackmap( |
0 | 1794 current_frame, this_offset, stackmap_index, |
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1795 !no_control_flow, true, false, &ctx, CHECK_VERIFY_(this, 0)); |
6605 | 1796 if (!matches) { |
0 | 1797 // report type error |
6605 | 1798 verify_error(ctx, "Instruction type does not match stack map"); |
0 | 1799 return 0; |
1800 } | |
1801 stackmap_index++; | |
1802 } else if (this_offset < bci) { | |
1803 // current_offset should have met this_offset. | |
1804 class_format_error("Bad stack map offset %d", this_offset); | |
1805 return 0; | |
1806 } | |
1807 } else if (no_control_flow) { | |
6605 | 1808 verify_error(ErrorContext::bad_code(bci), "Expecting a stack map frame"); |
0 | 1809 return 0; |
1810 } | |
1811 return stackmap_index; | |
1812 } | |
1813 | |
1814 void ClassVerifier::verify_exception_handler_targets(u2 bci, bool this_uninit, StackMapFrame* current_frame, | |
1815 StackMapTable* stackmap_table, TRAPS) { | |
1816 constantPoolHandle cp (THREAD, _method->constants()); | |
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1817 ExceptionTable exhandlers(_method()); |
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1818 int exlength = exhandlers.length(); |
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1819 for(int i = 0; i < exlength; i++) { |
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1820 //reacquire the table in case a GC happened |
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1821 ExceptionTable exhandlers(_method()); |
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1822 u2 start_pc = exhandlers.start_pc(i); |
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1823 u2 end_pc = exhandlers.end_pc(i); |
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1824 u2 handler_pc = exhandlers.handler_pc(i); |
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1825 int catch_type_index = exhandlers.catch_type_index(i); |
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1826 if(bci >= start_pc && bci < end_pc) { |
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1827 u1 flags = current_frame->flags(); |
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1828 if (this_uninit) { flags |= FLAG_THIS_UNINIT; } |
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1829 StackMapFrame* new_frame = current_frame->frame_in_exception_handler(flags); |
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1830 if (catch_type_index != 0) { |
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1831 // We know that this index refers to a subclass of Throwable |
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1832 VerificationType catch_type = cp_index_to_type( |
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1833 catch_type_index, cp, CHECK_VERIFY(this)); |
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1834 new_frame->push_stack(catch_type, CHECK_VERIFY(this)); |
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1835 } else { |
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1836 VerificationType throwable = |
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1837 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
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1838 new_frame->push_stack(throwable, CHECK_VERIFY(this)); |
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1839 } |
6605 | 1840 ErrorContext ctx; |
1841 bool matches = stackmap_table->match_stackmap( | |
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1842 new_frame, handler_pc, true, false, true, &ctx, CHECK_VERIFY(this)); |
6605 | 1843 if (!matches) { |
1844 verify_error(ctx, "Stack map does not match the one at " | |
1845 "exception handler %d", handler_pc); | |
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1846 return; |
0 | 1847 } |
1848 } | |
1849 } | |
1850 } | |
1851 | |
6605 | 1852 void ClassVerifier::verify_cp_index( |
1853 u2 bci, constantPoolHandle cp, int index, TRAPS) { | |
0 | 1854 int nconstants = cp->length(); |
1855 if ((index <= 0) || (index >= nconstants)) { | |
6605 | 1856 verify_error(ErrorContext::bad_cp_index(bci, index), |
1857 "Illegal constant pool index %d in class %s", | |
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1858 index, cp->pool_holder()->external_name()); |
0 | 1859 return; |
1860 } | |
1861 } | |
1862 | |
1863 void ClassVerifier::verify_cp_type( | |
6605 | 1864 u2 bci, int index, constantPoolHandle cp, unsigned int types, TRAPS) { |
0 | 1865 |
1866 // In some situations, bytecode rewriting may occur while we're verifying. | |
1867 // In this case, a constant pool cache exists and some indices refer to that | |
1570 | 1868 // instead. Be sure we don't pick up such indices by accident. |
1869 // We must check was_recursively_verified() before we get here. | |
1870 guarantee(cp->cache() == NULL, "not rewritten yet"); | |
0 | 1871 |
6605 | 1872 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); |
0 | 1873 unsigned int tag = cp->tag_at(index).value(); |
1874 if ((types & (1 << tag)) == 0) { | |
6605 | 1875 verify_error(ErrorContext::bad_cp_index(bci, index), |
0 | 1876 "Illegal type at constant pool entry %d in class %s", |
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1877 index, cp->pool_holder()->external_name()); |
0 | 1878 return; |
1879 } | |
1880 } | |
1881 | |
1882 void ClassVerifier::verify_cp_class_type( | |
6605 | 1883 u2 bci, int index, constantPoolHandle cp, TRAPS) { |
1884 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); | |
0 | 1885 constantTag tag = cp->tag_at(index); |
1886 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
6605 | 1887 verify_error(ErrorContext::bad_cp_index(bci, index), |
1888 "Illegal type at constant pool entry %d in class %s", | |
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1889 index, cp->pool_holder()->external_name()); |
0 | 1890 return; |
1891 } | |
1892 } | |
1893 | |
6605 | 1894 void ClassVerifier::verify_error(ErrorContext ctx, const char* msg, ...) { |
1895 stringStream ss; | |
0 | 1896 |
6605 | 1897 ctx.reset_frames(); |
0 | 1898 _exception_type = vmSymbols::java_lang_VerifyError(); |
6605 | 1899 _error_context = ctx; |
0 | 1900 va_list va; |
6605 | 1901 va_start(va, msg); |
1902 ss.vprint(msg, va); | |
0 | 1903 va_end(va); |
6605 | 1904 _message = ss.as_string(); |
1905 #ifdef ASSERT | |
1906 ResourceMark rm; | |
1907 const char* exception_name = _exception_type->as_C_string(); | |
1908 Exceptions::debug_check_abort(exception_name, NULL); | |
1909 #endif // ndef ASSERT | |
0 | 1910 } |
1911 | |
1912 void ClassVerifier::class_format_error(const char* msg, ...) { | |
6605 | 1913 stringStream ss; |
0 | 1914 _exception_type = vmSymbols::java_lang_ClassFormatError(); |
1915 va_list va; | |
1916 va_start(va, msg); | |
6605 | 1917 ss.vprint(msg, va); |
0 | 1918 va_end(va); |
6605 | 1919 if (!_method.is_null()) { |
1920 ss.print(" in method %s", _method->name_and_sig_as_C_string()); | |
1921 } | |
1922 _message = ss.as_string(); | |
0 | 1923 } |
1924 | |
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1925 Klass* ClassVerifier::load_class(Symbol* name, TRAPS) { |
0 | 1926 // Get current loader and protection domain first. |
1927 oop loader = current_class()->class_loader(); | |
1928 oop protection_domain = current_class()->protection_domain(); | |
1929 | |
1930 return SystemDictionary::resolve_or_fail( | |
1931 name, Handle(THREAD, loader), Handle(THREAD, protection_domain), | |
1932 true, CHECK_NULL); | |
1933 } | |
1934 | |
1935 bool ClassVerifier::is_protected_access(instanceKlassHandle this_class, | |
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1936 Klass* target_class, |
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1937 Symbol* field_name, |
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1938 Symbol* field_sig, |
0 | 1939 bool is_method) { |
1940 No_Safepoint_Verifier nosafepoint; | |
1941 | |
1942 // If target class isn't a super class of this class, we don't worry about this case | |
1943 if (!this_class->is_subclass_of(target_class)) { | |
1944 return false; | |
1945 } | |
1946 // Check if the specified method or field is protected | |
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1947 InstanceKlass* target_instance = InstanceKlass::cast(target_class); |
0 | 1948 fieldDescriptor fd; |
1949 if (is_method) { | |
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1950 Method* m = target_instance->uncached_lookup_method(field_name, field_sig, Klass::normal); |
0 | 1951 if (m != NULL && m->is_protected()) { |
1952 if (!this_class->is_same_class_package(m->method_holder())) { | |
1953 return true; | |
1954 } | |
1955 } | |
1956 } else { | |
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1957 Klass* member_klass = target_instance->find_field(field_name, field_sig, &fd); |
6605 | 1958 if (member_klass != NULL && fd.is_protected()) { |
0 | 1959 if (!this_class->is_same_class_package(member_klass)) { |
1960 return true; | |
1961 } | |
1962 } | |
1963 } | |
1964 return false; | |
1965 } | |
1966 | |
1967 void ClassVerifier::verify_ldc( | |
6605 | 1968 int opcode, u2 index, StackMapFrame* current_frame, |
1969 constantPoolHandle cp, u2 bci, TRAPS) { | |
1970 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); | |
0 | 1971 constantTag tag = cp->tag_at(index); |
1972 unsigned int types; | |
1973 if (opcode == Bytecodes::_ldc || opcode == Bytecodes::_ldc_w) { | |
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1974 if (!tag.is_unresolved_klass()) { |
0 | 1975 types = (1 << JVM_CONSTANT_Integer) | (1 << JVM_CONSTANT_Float) |
1602 | 1976 | (1 << JVM_CONSTANT_String) | (1 << JVM_CONSTANT_Class) |
1977 | (1 << JVM_CONSTANT_MethodHandle) | (1 << JVM_CONSTANT_MethodType); | |
1978 // Note: The class file parser already verified the legality of | |
1979 // MethodHandle and MethodType constants. | |
6605 | 1980 verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
0 | 1981 } |
1982 } else { | |
1983 assert(opcode == Bytecodes::_ldc2_w, "must be ldc2_w"); | |
1984 types = (1 << JVM_CONSTANT_Double) | (1 << JVM_CONSTANT_Long); | |
6605 | 1985 verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
0 | 1986 } |
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1987 if (tag.is_string() && cp->is_pseudo_string_at(index)) { |
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1988 current_frame->push_stack(object_type(), CHECK_VERIFY(this)); |
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1989 } else if (tag.is_string()) { |
0 | 1990 current_frame->push_stack( |
1991 VerificationType::reference_type( | |
1992 vmSymbols::java_lang_String()), CHECK_VERIFY(this)); | |
1993 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
1994 current_frame->push_stack( | |
1995 VerificationType::reference_type( | |
1996 vmSymbols::java_lang_Class()), CHECK_VERIFY(this)); | |
1997 } else if (tag.is_int()) { | |
1998 current_frame->push_stack( | |
1999 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2000 } else if (tag.is_float()) { | |
2001 current_frame->push_stack( | |
2002 VerificationType::float_type(), CHECK_VERIFY(this)); | |
2003 } else if (tag.is_double()) { | |
2004 current_frame->push_stack_2( | |
2005 VerificationType::double_type(), | |
2006 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
2007 } else if (tag.is_long()) { | |
2008 current_frame->push_stack_2( | |
2009 VerificationType::long_type(), | |
2010 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1602 | 2011 } else if (tag.is_method_handle()) { |
2012 current_frame->push_stack( | |
2013 VerificationType::reference_type( | |
2460 | 2014 vmSymbols::java_lang_invoke_MethodHandle()), CHECK_VERIFY(this)); |
1602 | 2015 } else if (tag.is_method_type()) { |
2016 current_frame->push_stack( | |
2017 VerificationType::reference_type( | |
2460 | 2018 vmSymbols::java_lang_invoke_MethodType()), CHECK_VERIFY(this)); |
0 | 2019 } else { |
6605 | 2020 /* Unreachable? verify_cp_type has already validated the cp type. */ |
2021 verify_error( | |
2022 ErrorContext::bad_cp_index(bci, index), "Invalid index in ldc"); | |
0 | 2023 return; |
2024 } | |
2025 } | |
2026 | |
2027 void ClassVerifier::verify_switch( | |
2028 RawBytecodeStream* bcs, u4 code_length, char* code_data, | |
2029 StackMapFrame* current_frame, StackMapTable* stackmap_table, TRAPS) { | |
2030 int bci = bcs->bci(); | |
2031 address bcp = bcs->bcp(); | |
2032 address aligned_bcp = (address) round_to((intptr_t)(bcp + 1), jintSize); | |
2033 | |
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2034 if (_klass->major_version() < NONZERO_PADDING_BYTES_IN_SWITCH_MAJOR_VERSION) { |
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2035 // 4639449 & 4647081: padding bytes must be 0 |
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2036 u2 padding_offset = 1; |
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|
2037 while ((bcp + padding_offset) < aligned_bcp) { |
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|
2038 if(*(bcp + padding_offset) != 0) { |
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8010667: Non-zero padding is not allowed in splitverifier for tableswitch/lookupswitch instructions.
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|
2039 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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|
2040 "Nonzero padding byte in lookswitch or tableswitch"); |
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|
2041 return; |
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|
2042 } |
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|
2043 padding_offset++; |
0 | 2044 } |
2045 } | |
8816
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|
2046 |
0 | 2047 int default_offset = (int) Bytes::get_Java_u4(aligned_bcp); |
2048 int keys, delta; | |
2049 current_frame->pop_stack( | |
2050 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1565 | 2051 if (bcs->raw_code() == Bytecodes::_tableswitch) { |
0 | 2052 jint low = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize); |
2053 jint high = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize); | |
2054 if (low > high) { | |
6605 | 2055 verify_error(ErrorContext::bad_code(bci), |
2056 "low must be less than or equal to high in tableswitch"); | |
0 | 2057 return; |
2058 } | |
2059 keys = high - low + 1; | |
2060 if (keys < 0) { | |
6605 | 2061 verify_error(ErrorContext::bad_code(bci), "too many keys in tableswitch"); |
0 | 2062 return; |
2063 } | |
2064 delta = 1; | |
2065 } else { | |
2066 keys = (int)Bytes::get_Java_u4(aligned_bcp + jintSize); | |
2067 if (keys < 0) { | |
6605 | 2068 verify_error(ErrorContext::bad_code(bci), |
2069 "number of keys in lookupswitch less than 0"); | |
0 | 2070 return; |
2071 } | |
2072 delta = 2; | |
2073 // Make sure that the lookupswitch items are sorted | |
2074 for (int i = 0; i < (keys - 1); i++) { | |
2075 jint this_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i)*jintSize); | |
2076 jint next_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i+2)*jintSize); | |
2077 if (this_key >= next_key) { | |
6605 | 2078 verify_error(ErrorContext::bad_code(bci), |
2079 "Bad lookupswitch instruction"); | |
0 | 2080 return; |
2081 } | |
2082 } | |
2083 } | |
2084 int target = bci + default_offset; | |
2085 stackmap_table->check_jump_target(current_frame, target, CHECK_VERIFY(this)); | |
2086 for (int i = 0; i < keys; i++) { | |
6118 | 2087 // Because check_jump_target() may safepoint, the bytecode could have |
2088 // moved, which means 'aligned_bcp' is no good and needs to be recalculated. | |
2089 aligned_bcp = (address)round_to((intptr_t)(bcs->bcp() + 1), jintSize); | |
0 | 2090 target = bci + (jint)Bytes::get_Java_u4(aligned_bcp+(3+i*delta)*jintSize); |
2091 stackmap_table->check_jump_target( | |
2092 current_frame, target, CHECK_VERIFY(this)); | |
2093 } | |
6118 | 2094 NOT_PRODUCT(aligned_bcp = NULL); // no longer valid at this point |
0 | 2095 } |
2096 | |
2097 bool ClassVerifier::name_in_supers( | |
2177
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2098 Symbol* ref_name, instanceKlassHandle current) { |
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2099 Klass* super = current->super(); |
0 | 2100 while (super != NULL) { |
6725
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2101 if (super->name() == ref_name) { |
0 | 2102 return true; |
2103 } | |
6725
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2104 super = super->super(); |
0 | 2105 } |
2106 return false; | |
2107 } | |
2108 | |
2109 void ClassVerifier::verify_field_instructions(RawBytecodeStream* bcs, | |
2110 StackMapFrame* current_frame, | |
2111 constantPoolHandle cp, | |
2112 TRAPS) { | |
1565 | 2113 u2 index = bcs->get_index_u2(); |
6605 | 2114 verify_cp_type(bcs->bci(), index, cp, |
2115 1 << JVM_CONSTANT_Fieldref, CHECK_VERIFY(this)); | |
0 | 2116 |
2117 // Get field name and signature | |
2177
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2118 Symbol* field_name = cp->name_ref_at(index); |
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|
2119 Symbol* field_sig = cp->signature_ref_at(index); |
0 | 2120 |
2121 if (!SignatureVerifier::is_valid_type_signature(field_sig)) { | |
2122 class_format_error( | |
2123 "Invalid signature for field in class %s referenced " | |
2124 "from constant pool index %d", _klass->external_name(), index); | |
2125 return; | |
2126 } | |
2127 | |
2128 // Get referenced class type | |
2129 VerificationType ref_class_type = cp_ref_index_to_type( | |
2130 index, cp, CHECK_VERIFY(this)); | |
2131 if (!ref_class_type.is_object()) { | |
6605 | 2132 /* Unreachable? Class file parser verifies Fieldref contents */ |
2133 verify_error(ErrorContext::bad_type(bcs->bci(), | |
2134 TypeOrigin::cp(index, ref_class_type)), | |
2135 "Expecting reference to class in class %s at constant pool index %d", | |
2136 _klass->external_name(), index); | |
0 | 2137 return; |
2138 } | |
2139 VerificationType target_class_type = ref_class_type; | |
2140 | |
2141 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
2142 "buffer type must match VerificationType size"); | |
2143 uintptr_t field_type_buffer[2]; | |
2144 VerificationType* field_type = (VerificationType*)field_type_buffer; | |
2145 // If we make a VerificationType[2] array directly, the compiler calls | |
2146 // to the c-runtime library to do the allocation instead of just | |
2147 // stack allocating it. Plus it would run constructors. This shows up | |
2148 // in performance profiles. | |
2149 | |
2150 SignatureStream sig_stream(field_sig, false); | |
2151 VerificationType stack_object_type; | |
2152 int n = change_sig_to_verificationType( | |
2153 &sig_stream, field_type, CHECK_VERIFY(this)); | |
2154 u2 bci = bcs->bci(); | |
2155 bool is_assignable; | |
1565 | 2156 switch (bcs->raw_code()) { |
0 | 2157 case Bytecodes::_getstatic: { |
2158 for (int i = 0; i < n; i++) { | |
2159 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
2160 } | |
2161 break; | |
2162 } | |
2163 case Bytecodes::_putstatic: { | |
2164 for (int i = n - 1; i >= 0; i--) { | |
2165 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
2166 } | |
2167 break; | |
2168 } | |
2169 case Bytecodes::_getfield: { | |
2170 stack_object_type = current_frame->pop_stack( | |
2171 target_class_type, CHECK_VERIFY(this)); | |
2172 for (int i = 0; i < n; i++) { | |
2173 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
2174 } | |
2175 goto check_protected; | |
2176 } | |
2177 case Bytecodes::_putfield: { | |
2178 for (int i = n - 1; i >= 0; i--) { | |
2179 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
2180 } | |
2181 stack_object_type = current_frame->pop_stack(CHECK_VERIFY(this)); | |
2182 | |
2183 // The JVMS 2nd edition allows field initialization before the superclass | |
2184 // initializer, if the field is defined within the current class. | |
2185 fieldDescriptor fd; | |
2186 if (stack_object_type == VerificationType::uninitialized_this_type() && | |
2187 target_class_type.equals(current_type()) && | |
2177
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2188 _klass->find_local_field(field_name, field_sig, &fd)) { |
0 | 2189 stack_object_type = current_type(); |
2190 } | |
2191 is_assignable = target_class_type.is_assignable_from( | |
2177
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|
2192 stack_object_type, this, CHECK_VERIFY(this)); |
0 | 2193 if (!is_assignable) { |
6605 | 2194 verify_error(ErrorContext::bad_type(bci, |
2195 current_frame->stack_top_ctx(), | |
2196 TypeOrigin::cp(index, target_class_type)), | |
2197 "Bad type on operand stack in putfield"); | |
0 | 2198 return; |
2199 } | |
2200 } | |
2201 check_protected: { | |
2202 if (_this_type == stack_object_type) | |
2203 break; // stack_object_type must be assignable to _current_class_type | |
2177
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|
2204 Symbol* ref_class_name = |
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diff
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|
2205 cp->klass_name_at(cp->klass_ref_index_at(index)); |
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diff
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|
2206 if (!name_in_supers(ref_class_name, current_class())) |
0 | 2207 // stack_object_type must be assignable to _current_class_type since: |
2208 // 1. stack_object_type must be assignable to ref_class. | |
2209 // 2. ref_class must be _current_class or a subclass of it. It can't | |
2210 // be a superclass of it. See revised JVMS 5.4.4. | |
2211 break; | |
2212 | |
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|
2213 Klass* ref_class_oop = load_class(ref_class_name, CHECK); |
2177
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diff
changeset
|
2214 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
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|
2215 field_sig, false)) { |
0 | 2216 // It's protected access, check if stack object is assignable to |
2217 // current class. | |
2218 is_assignable = current_type().is_assignable_from( | |
2177
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|
2219 stack_object_type, this, CHECK_VERIFY(this)); |
0 | 2220 if (!is_assignable) { |
6605 | 2221 verify_error(ErrorContext::bad_type(bci, |
2222 current_frame->stack_top_ctx(), | |
2223 TypeOrigin::implicit(current_type())), | |
2224 "Bad access to protected data in getfield"); | |
0 | 2225 return; |
2226 } | |
2227 } | |
2228 break; | |
2229 } | |
2230 default: ShouldNotReachHere(); | |
2231 } | |
2232 } | |
2233 | |
2234 void ClassVerifier::verify_invoke_init( | |
6605 | 2235 RawBytecodeStream* bcs, u2 ref_class_index, VerificationType ref_class_type, |
0 | 2236 StackMapFrame* current_frame, u4 code_length, bool *this_uninit, |
2237 constantPoolHandle cp, TRAPS) { | |
2238 u2 bci = bcs->bci(); | |
2239 VerificationType type = current_frame->pop_stack( | |
2240 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
2241 if (type == VerificationType::uninitialized_this_type()) { | |
6155 | 2242 // The method must be an <init> method of this class or its superclass |
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|
2243 Klass* superk = current_class()->super(); |
1677 | 2244 if (ref_class_type.name() != current_class()->name() && |
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diff
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|
2245 ref_class_type.name() != superk->name()) { |
6605 | 2246 verify_error(ErrorContext::bad_type(bci, |
2247 TypeOrigin::implicit(ref_class_type), | |
2248 TypeOrigin::implicit(current_type())), | |
2249 "Bad <init> method call"); | |
0 | 2250 return; |
2251 } | |
17573 | 2252 |
2253 // Make sure that this call is not done from within a TRY block because | |
2254 // that can result in returning an incomplete object. Simply checking | |
2255 // (bci >= start_pc) also ensures that this call is not done after a TRY | |
2256 // block. That is also illegal because this call must be the first Java | |
2257 // statement in the constructor. | |
2258 ExceptionTable exhandlers(_method()); | |
2259 int exlength = exhandlers.length(); | |
2260 for(int i = 0; i < exlength; i++) { | |
2261 if (bci >= exhandlers.start_pc(i)) { | |
2262 verify_error(ErrorContext::bad_code(bci), | |
2263 "Bad <init> method call from after the start of a try block"); | |
2264 return; | |
2265 } | |
2266 } | |
2267 | |
0 | 2268 current_frame->initialize_object(type, current_type()); |
2269 *this_uninit = true; | |
2270 } else if (type.is_uninitialized()) { | |
2271 u2 new_offset = type.bci(); | |
2272 address new_bcp = bcs->bcp() - bci + new_offset; | |
2273 if (new_offset > (code_length - 3) || (*new_bcp) != Bytecodes::_new) { | |
6605 | 2274 /* Unreachable? Stack map parsing ensures valid type and new |
2275 * instructions have a valid BCI. */ | |
2276 verify_error(ErrorContext::bad_code(new_offset), | |
2277 "Expecting new instruction"); | |
0 | 2278 return; |
2279 } | |
2280 u2 new_class_index = Bytes::get_Java_u2(new_bcp + 1); | |
6605 | 2281 verify_cp_class_type(bci, new_class_index, cp, CHECK_VERIFY(this)); |
0 | 2282 |
2283 // The method must be an <init> method of the indicated class | |
2284 VerificationType new_class_type = cp_index_to_type( | |
2285 new_class_index, cp, CHECK_VERIFY(this)); | |
2286 if (!new_class_type.equals(ref_class_type)) { | |
6605 | 2287 verify_error(ErrorContext::bad_type(bci, |
2288 TypeOrigin::cp(new_class_index, new_class_type), | |
2289 TypeOrigin::cp(ref_class_index, ref_class_type)), | |
2290 "Call to wrong <init> method"); | |
0 | 2291 return; |
2292 } | |
2293 // According to the VM spec, if the referent class is a superclass of the | |
2294 // current class, and is in a different runtime package, and the method is | |
2295 // protected, then the objectref must be the current class or a subclass | |
2296 // of the current class. | |
2297 VerificationType objectref_type = new_class_type; | |
2298 if (name_in_supers(ref_class_type.name(), current_class())) { | |
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|
2299 Klass* ref_klass = load_class( |
0 | 2300 ref_class_type.name(), CHECK_VERIFY(this)); |
6725
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|
2301 Method* m = InstanceKlass::cast(ref_klass)->uncached_lookup_method( |
0 | 2302 vmSymbols::object_initializer_name(), |
18007 | 2303 cp->signature_ref_at(bcs->get_index_u2()), Klass::normal); |
17593
e6b738407432
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|
2304 // Do nothing if method is not found. Let resolution detect the error. |
e6b738407432
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diff
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|
2305 if (m != NULL) { |
e6b738407432
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hseigel
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diff
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|
2306 instanceKlassHandle mh(THREAD, m->method_holder()); |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
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diff
changeset
|
2307 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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diff
changeset
|
2308 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
|
2309 objectref_type, this, CHECK_VERIFY(this)); |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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diff
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|
2310 if (!assignable) { |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
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diff
changeset
|
2311 verify_error(ErrorContext::bad_type(bci, |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
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diff
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|
2312 TypeOrigin::cp(new_class_index, objectref_type), |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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diff
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|
2313 TypeOrigin::implicit(current_type())), |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
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diff
changeset
|
2314 "Bad access to protected <init> method"); |
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
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diff
changeset
|
2315 return; |
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|
2316 } |
0 | 2317 } |
2318 } | |
2319 } | |
2320 current_frame->initialize_object(type, new_class_type); | |
2321 } else { | |
6605 | 2322 verify_error(ErrorContext::bad_type(bci, current_frame->stack_top_ctx()), |
2323 "Bad operand type when invoking <init>"); | |
0 | 2324 return; |
2325 } | |
2326 } | |
2327 | |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
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diff
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|
2328 bool ClassVerifier::is_same_or_direct_interface( |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
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|
2329 instanceKlassHandle klass, |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
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diff
changeset
|
2330 VerificationType klass_type, |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2331 VerificationType ref_class_type) { |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2332 if (ref_class_type.equals(klass_type)) return true; |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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diff
changeset
|
2333 Array<Klass*>* local_interfaces = klass->local_interfaces(); |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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diff
changeset
|
2334 if (local_interfaces != NULL) { |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
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13385
diff
changeset
|
2335 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
|
2336 Klass* k = local_interfaces->at(x); |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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diff
changeset
|
2337 assert (k != NULL && k->is_interface(), "invalid interface"); |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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diff
changeset
|
2338 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
|
2339 return true; |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2340 } |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
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13385
diff
changeset
|
2341 } |
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13385
diff
changeset
|
2342 } |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2343 return false; |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2344 } |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2345 |
0 | 2346 void ClassVerifier::verify_invoke_instructions( |
2347 RawBytecodeStream* bcs, u4 code_length, StackMapFrame* current_frame, | |
2348 bool *this_uninit, VerificationType return_type, | |
2349 constantPoolHandle cp, TRAPS) { | |
2350 // Make sure the constant pool item is the right type | |
1565 | 2351 u2 index = bcs->get_index_u2(); |
2352 Bytecodes::Code opcode = bcs->raw_code(); | |
6934 | 2353 unsigned int types; |
2354 switch (opcode) { | |
2355 case Bytecodes::_invokeinterface: | |
2356 types = 1 << JVM_CONSTANT_InterfaceMethodref; | |
2357 break; | |
2358 case Bytecodes::_invokedynamic: | |
2359 types = 1 << JVM_CONSTANT_InvokeDynamic; | |
2360 break; | |
2361 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
|
2362 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
|
2363 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
|
2364 (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
|
2365 ((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
|
2366 break; |
6934 | 2367 default: |
2368 types = 1 << JVM_CONSTANT_Methodref; | |
2369 } | |
6605 | 2370 verify_cp_type(bcs->bci(), index, cp, types, CHECK_VERIFY(this)); |
0 | 2371 |
2372 // Get method name and signature | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2373 Symbol* method_name = cp->name_ref_at(index); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2374 Symbol* method_sig = cp->signature_ref_at(index); |
0 | 2375 |
2376 if (!SignatureVerifier::is_valid_method_signature(method_sig)) { | |
2377 class_format_error( | |
2378 "Invalid method signature in class %s referenced " | |
2379 "from constant pool index %d", _klass->external_name(), index); | |
2380 return; | |
2381 } | |
2382 | |
2383 // Get referenced class type | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2384 VerificationType ref_class_type; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2385 if (opcode == Bytecodes::_invokedynamic) { |
1602 | 2386 if (!EnableInvokeDynamic || |
2387 _klass->major_version() < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { | |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2388 if (!EnableInvokeDynamic) { |
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2389 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
|
2390 } else { |
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2391 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
|
2392 _klass->major_version(), _klass->external_name()); |
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2393 } |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2394 return; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2395 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2396 } else { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2397 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
|
2398 } |
0 | 2399 |
2400 // For a small signature length, we just allocate 128 bytes instead | |
2401 // of parsing the signature once to find its size. | |
2402 // -3 is for '(', ')' and return descriptor; multiply by 2 is for | |
2403 // longs/doubles to be consertive. | |
2404 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
2405 "buffer type must match VerificationType size"); | |
2406 uintptr_t on_stack_sig_types_buffer[128]; | |
2407 // If we make a VerificationType[128] array directly, the compiler calls | |
2408 // to the c-runtime library to do the allocation instead of just | |
2409 // stack allocating it. Plus it would run constructors. This shows up | |
2410 // in performance profiles. | |
2411 | |
2412 VerificationType* sig_types; | |
2413 int size = (method_sig->utf8_length() - 3) * 2; | |
2414 if (size > 128) { | |
2415 // Long and double occupies two slots here. | |
2416 ArgumentSizeComputer size_it(method_sig); | |
2417 size = size_it.size(); | |
2418 sig_types = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, VerificationType, size); | |
2419 } else{ | |
2420 sig_types = (VerificationType*)on_stack_sig_types_buffer; | |
2421 } | |
2422 SignatureStream sig_stream(method_sig); | |
2423 int sig_i = 0; | |
2424 while (!sig_stream.at_return_type()) { | |
2425 sig_i += change_sig_to_verificationType( | |
2426 &sig_stream, &sig_types[sig_i], CHECK_VERIFY(this)); | |
2427 sig_stream.next(); | |
2428 } | |
2429 int nargs = sig_i; | |
2430 | |
2431 #ifdef ASSERT | |
2432 { | |
2433 ArgumentSizeComputer size_it(method_sig); | |
2434 assert(nargs == size_it.size(), "Argument sizes do not match"); | |
2435 assert(nargs <= (method_sig->utf8_length() - 3) * 2, "estimate of max size isn't conservative enough"); | |
2436 } | |
2437 #endif | |
2438 | |
2439 // Check instruction operands | |
2440 u2 bci = bcs->bci(); | |
2441 if (opcode == Bytecodes::_invokeinterface) { | |
2442 address bcp = bcs->bcp(); | |
2443 // 4905268: count operand in invokeinterface should be nargs+1, not nargs. | |
2444 // JSR202 spec: The count operand of an invokeinterface instruction is valid if it is | |
2445 // the difference between the size of the operand stack before and after the instruction | |
2446 // executes. | |
2447 if (*(bcp+3) != (nargs+1)) { | |
6605 | 2448 verify_error(ErrorContext::bad_code(bci), |
2449 "Inconsistent args count operand in invokeinterface"); | |
0 | 2450 return; |
2451 } | |
2452 if (*(bcp+4) != 0) { | |
6605 | 2453 verify_error(ErrorContext::bad_code(bci), |
2454 "Fourth operand byte of invokeinterface must be zero"); | |
0 | 2455 return; |
2456 } | |
2457 } | |
2458 | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2459 if (opcode == Bytecodes::_invokedynamic) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2460 address bcp = bcs->bcp(); |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2461 if (*(bcp+3) != 0 || *(bcp+4) != 0) { |
6605 | 2462 verify_error(ErrorContext::bad_code(bci), |
2463 "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
|
2464 return; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2465 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2466 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2467 |
0 | 2468 if (method_name->byte_at(0) == '<') { |
2469 // Make sure <init> can only be invoked by invokespecial | |
2470 if (opcode != Bytecodes::_invokespecial || | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2471 method_name != vmSymbols::object_initializer_name()) { |
6605 | 2472 verify_error(ErrorContext::bad_code(bci), |
2473 "Illegal call to internal method"); | |
0 | 2474 return; |
2475 } | |
2476 } else if (opcode == Bytecodes::_invokespecial | |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2477 && !is_same_or_direct_interface(current_class(), current_type(), ref_class_type) |
0 | 2478 && !ref_class_type.equals(VerificationType::reference_type( |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6608
diff
changeset
|
2479 current_class()->super()->name()))) { |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2480 bool subtype = false; |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2481 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
|
2482 if (!current_class()->is_anonymous()) { |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2483 subtype = ref_class_type.is_assignable_from( |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2484 current_type(), this, CHECK_VERIFY(this)); |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2485 } else { |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2486 VerificationType host_klass_type = |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2487 VerificationType::reference_type(current_class()->host_klass()->name()); |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2488 subtype = ref_class_type.is_assignable_from(host_klass_type, this, CHECK_VERIFY(this)); |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2489 |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2490 // 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
|
2491 // direct interface relative to the host class |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2492 have_imr_indirect = (have_imr_indirect && |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2493 !is_same_or_direct_interface( |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2494 InstanceKlass::cast(current_class()->host_klass()), |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2495 host_klass_type, ref_class_type)); |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2496 } |
0 | 2497 if (!subtype) { |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2498 verify_error(ErrorContext::bad_code(bci), |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2499 "Bad invokespecial instruction: " |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2500 "current class isn't assignable to reference class."); |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2501 return; |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2502 } else if (have_imr_indirect) { |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2503 verify_error(ErrorContext::bad_code(bci), |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2504 "Bad invokespecial instruction: " |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2505 "interface method reference is in an indirect superinterface."); |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2506 return; |
0 | 2507 } |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2508 |
0 | 2509 } |
2510 // Match method descriptor with operand stack | |
2511 for (int i = nargs - 1; i >= 0; i--) { // Run backwards | |
2512 current_frame->pop_stack(sig_types[i], CHECK_VERIFY(this)); | |
2513 } | |
2514 // Check objectref on operand stack | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2515 if (opcode != Bytecodes::_invokestatic && |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2516 opcode != Bytecodes::_invokedynamic) { |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2517 if (method_name == vmSymbols::object_initializer_name()) { // <init> method |
6605 | 2518 verify_invoke_init(bcs, index, ref_class_type, current_frame, |
0 | 2519 code_length, this_uninit, cp, CHECK_VERIFY(this)); |
2520 } else { // other methods | |
2521 // Ensures that target class is assignable to method class. | |
2522 if (opcode == Bytecodes::_invokespecial) { | |
12827
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2523 if (!current_class()->is_anonymous()) { |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2524 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
|
2525 } else { |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2526 // anonymous class invokespecial calls: check if the |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2527 // 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
|
2528 // 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
|
2529 VerificationType top = current_frame->pop_stack(CHECK_VERIFY(this)); |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2530 VerificationType hosttype = |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2531 VerificationType::reference_type(current_class()->host_klass()->name()); |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2532 bool subtype = hosttype.is_assignable_from(top, this, CHECK_VERIFY(this)); |
12827
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2533 if (!subtype) { |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2534 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
|
2535 current_frame->stack_top_ctx(), |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2536 TypeOrigin::implicit(top)), |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2537 "Bad type on operand stack"); |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2538 return; |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2539 } |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2540 } |
0 | 2541 } else if (opcode == Bytecodes::_invokevirtual) { |
2542 VerificationType stack_object_type = | |
2543 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
2544 if (current_type() != stack_object_type) { | |
2545 assert(cp->cache() == NULL, "not rewritten yet"); | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2546 Symbol* ref_class_name = |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2547 cp->klass_name_at(cp->klass_ref_index_at(index)); |
0 | 2548 // See the comments in verify_field_instructions() for |
2549 // the rationale behind this. | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2550 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
|
2551 Klass* ref_class = load_class(ref_class_name, CHECK); |
0 | 2552 if (is_protected_access( |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2553 _klass, ref_class, method_name, method_sig, true)) { |
0 | 2554 // It's protected access, check if stack object is |
2555 // assignable to current class. | |
2556 bool is_assignable = current_type().is_assignable_from( | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2557 stack_object_type, this, CHECK_VERIFY(this)); |
0 | 2558 if (!is_assignable) { |
2559 if (ref_class_type.name() == vmSymbols::java_lang_Object() | |
2560 && stack_object_type.is_array() | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2561 && method_name == vmSymbols::clone_name()) { |
0 | 2562 // Special case: arrays pretend to implement public Object |
2563 // clone(). | |
2564 } else { | |
6605 | 2565 verify_error(ErrorContext::bad_type(bci, |
2566 current_frame->stack_top_ctx(), | |
2567 TypeOrigin::implicit(current_type())), | |
2568 "Bad access to protected data in invokevirtual"); | |
0 | 2569 return; |
2570 } | |
2571 } | |
2572 } | |
2573 } | |
2574 } | |
2575 } else { | |
2576 assert(opcode == Bytecodes::_invokeinterface, "Unexpected opcode encountered"); | |
2577 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
2578 } | |
2579 } | |
2580 } | |
2581 // Push the result type. | |
2582 if (sig_stream.type() != T_VOID) { | |
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2583 if (method_name == vmSymbols::object_initializer_name()) { |
0 | 2584 // <init> method must have a void return type |
6605 | 2585 /* Unreachable? Class file parser verifies that methods with '<' have |
2586 * void return */ | |
2587 verify_error(ErrorContext::bad_code(bci), | |
2588 "Return type must be void in <init> method"); | |
0 | 2589 return; |
2590 } | |
2591 VerificationType return_type[2]; | |
2592 int n = change_sig_to_verificationType( | |
2593 &sig_stream, return_type, CHECK_VERIFY(this)); | |
2594 for (int i = 0; i < n; i++) { | |
2595 current_frame->push_stack(return_type[i], CHECK_VERIFY(this)); // push types backwards | |
2596 } | |
2597 } | |
2598 } | |
2599 | |
2600 VerificationType ClassVerifier::get_newarray_type( | |
2601 u2 index, u2 bci, TRAPS) { | |
2602 const char* from_bt[] = { | |
2603 NULL, NULL, NULL, NULL, "[Z", "[C", "[F", "[D", "[B", "[S", "[I", "[J", | |
2604 }; | |
2605 if (index < T_BOOLEAN || index > T_LONG) { | |
6605 | 2606 verify_error(ErrorContext::bad_code(bci), "Illegal newarray instruction"); |
0 | 2607 return VerificationType::bogus_type(); |
2608 } | |
2609 | |
2610 // from_bt[index] contains the array signature which has a length of 2 | |
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2611 Symbol* sig = create_temporary_symbol( |
0 | 2612 from_bt[index], 2, CHECK_(VerificationType::bogus_type())); |
2613 return VerificationType::reference_type(sig); | |
2614 } | |
2615 | |
2616 void ClassVerifier::verify_anewarray( | |
6605 | 2617 u2 bci, u2 index, constantPoolHandle cp, |
2618 StackMapFrame* current_frame, TRAPS) { | |
2619 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); | |
0 | 2620 current_frame->pop_stack( |
2621 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2622 | |
2623 VerificationType component_type = | |
2624 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
2625 int length; | |
2626 char* arr_sig_str; | |
2627 if (component_type.is_array()) { // it's an array | |
2628 const char* component_name = component_type.name()->as_utf8(); | |
2629 // add one dimension to component | |
2630 length = (int)strlen(component_name) + 1; | |
2631 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
2632 arr_sig_str[0] = '['; | |
2633 strncpy(&arr_sig_str[1], component_name, length - 1); | |
2634 } else { // it's an object or interface | |
2635 const char* component_name = component_type.name()->as_utf8(); | |
2636 // add one dimension to component with 'L' prepended and ';' postpended. | |
2637 length = (int)strlen(component_name) + 3; | |
2638 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
2639 arr_sig_str[0] = '['; | |
2640 arr_sig_str[1] = 'L'; | |
2641 strncpy(&arr_sig_str[2], component_name, length - 2); | |
2642 arr_sig_str[length - 1] = ';'; | |
2643 } | |
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2644 Symbol* arr_sig = create_temporary_symbol( |
0 | 2645 arr_sig_str, length, CHECK_VERIFY(this)); |
2646 VerificationType new_array_type = VerificationType::reference_type(arr_sig); | |
2647 current_frame->push_stack(new_array_type, CHECK_VERIFY(this)); | |
2648 } | |
2649 | |
2650 void ClassVerifier::verify_iload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2651 current_frame->get_local( | |
2652 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2653 current_frame->push_stack( | |
2654 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2655 } | |
2656 | |
2657 void ClassVerifier::verify_lload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2658 current_frame->get_local_2( | |
2659 index, VerificationType::long_type(), | |
2660 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
2661 current_frame->push_stack_2( | |
2662 VerificationType::long_type(), | |
2663 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
2664 } | |
2665 | |
2666 void ClassVerifier::verify_fload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2667 current_frame->get_local( | |
2668 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
2669 current_frame->push_stack( | |
2670 VerificationType::float_type(), CHECK_VERIFY(this)); | |
2671 } | |
2672 | |
2673 void ClassVerifier::verify_dload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2674 current_frame->get_local_2( | |
2675 index, VerificationType::double_type(), | |
2676 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
2677 current_frame->push_stack_2( | |
2678 VerificationType::double_type(), | |
2679 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
2680 } | |
2681 | |
2682 void ClassVerifier::verify_aload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2683 VerificationType type = current_frame->get_local( | |
2684 index, VerificationType::reference_check(), CHECK_VERIFY(this)); | |
2685 current_frame->push_stack(type, CHECK_VERIFY(this)); | |
2686 } | |
2687 | |
2688 void ClassVerifier::verify_istore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2689 current_frame->pop_stack( | |
2690 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2691 current_frame->set_local( | |
2692 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2693 } | |
2694 | |
2695 void ClassVerifier::verify_lstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2696 current_frame->pop_stack_2( | |
2697 VerificationType::long2_type(), | |
2698 VerificationType::long_type(), CHECK_VERIFY(this)); | |
2699 current_frame->set_local_2( | |
2700 index, VerificationType::long_type(), | |
2701 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
2702 } | |
2703 | |
2704 void ClassVerifier::verify_fstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2705 current_frame->pop_stack(VerificationType::float_type(), CHECK_VERIFY(this)); | |
2706 current_frame->set_local( | |
2707 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
2708 } | |
2709 | |
2710 void ClassVerifier::verify_dstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2711 current_frame->pop_stack_2( | |
2712 VerificationType::double2_type(), | |
2713 VerificationType::double_type(), CHECK_VERIFY(this)); | |
2714 current_frame->set_local_2( | |
2715 index, VerificationType::double_type(), | |
2716 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
2717 } | |
2718 | |
2719 void ClassVerifier::verify_astore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2720 VerificationType type = current_frame->pop_stack( | |
2721 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
2722 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
2723 } | |
2724 | |
2725 void ClassVerifier::verify_iinc(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2726 VerificationType type = current_frame->get_local( | |
2727 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2728 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
2729 } | |
2730 | |
2731 void ClassVerifier::verify_return_value( | |
6605 | 2732 VerificationType return_type, VerificationType type, u2 bci, |
2733 StackMapFrame* current_frame, TRAPS) { | |
0 | 2734 if (return_type == VerificationType::bogus_type()) { |
6605 | 2735 verify_error(ErrorContext::bad_type(bci, |
2736 current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), | |
2737 "Method expects a return value"); | |
0 | 2738 return; |
2739 } | |
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2740 bool match = return_type.is_assignable_from(type, this, CHECK_VERIFY(this)); |
0 | 2741 if (!match) { |
6605 | 2742 verify_error(ErrorContext::bad_type(bci, |
2743 current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), | |
2744 "Bad return type"); | |
0 | 2745 return; |
2746 } | |
2747 } | |
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2748 |
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2749 // The verifier creates symbols which are substrings of Symbols. |
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2750 // These are stored in the verifier until the end of verification so that |
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2751 // they can be reference counted. |
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2752 Symbol* ClassVerifier::create_temporary_symbol(const Symbol *s, int begin, |
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2753 int end, TRAPS) { |
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2754 Symbol* sym = SymbolTable::new_symbol(s, begin, end, CHECK_NULL); |
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2755 _symbols->push(sym); |
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2756 return sym; |
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2757 } |
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2758 |
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2759 Symbol* ClassVerifier::create_temporary_symbol(const char *s, int length, TRAPS) { |
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2760 Symbol* sym = SymbolTable::new_symbol(s, length, CHECK_NULL); |
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2761 _symbols->push(sym); |
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2762 return sym; |
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2763 } |