Mercurial > hg > truffle
annotate src/share/vm/classfile/verifier.cpp @ 14714:b602356a9cfc
additional canonicalizers for accesses and value nodes (improves number of implicit null checks)
author | Lukas Stadler <lukas.stadler@oracle.com> |
---|---|
date | Thu, 20 Mar 2014 17:15:36 +0100 |
parents | 22eaa15b7960 |
children | ad431bf0de07 aff11567504c 386dd1c71858 |
rev | line source |
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0 | 1 /* |
8060 | 2 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classFileStream.hpp" | |
27 #include "classfile/javaClasses.hpp" | |
28 #include "classfile/stackMapTable.hpp" | |
6605 | 29 #include "classfile/stackMapFrame.hpp" |
30 #include "classfile/stackMapTableFormat.hpp" | |
1972 | 31 #include "classfile/systemDictionary.hpp" |
32 #include "classfile/verifier.hpp" | |
33 #include "classfile/vmSymbols.hpp" | |
6605 | 34 #include "interpreter/bytecodes.hpp" |
1972 | 35 #include "interpreter/bytecodeStream.hpp" |
36 #include "memory/oopFactory.hpp" | |
37 #include "memory/resourceArea.hpp" | |
38 #include "oops/instanceKlass.hpp" | |
39 #include "oops/oop.inline.hpp" | |
40 #include "oops/typeArrayOop.hpp" | |
41 #include "prims/jvm.h" | |
42 #include "runtime/fieldDescriptor.hpp" | |
43 #include "runtime/handles.inline.hpp" | |
44 #include "runtime/interfaceSupport.hpp" | |
45 #include "runtime/javaCalls.hpp" | |
46 #include "runtime/orderAccess.hpp" | |
47 #include "runtime/os.hpp" | |
48 #ifdef TARGET_ARCH_x86 | |
49 # include "bytes_x86.hpp" | |
50 #endif | |
51 #ifdef TARGET_ARCH_sparc | |
52 # include "bytes_sparc.hpp" | |
53 #endif | |
54 #ifdef TARGET_ARCH_zero | |
55 # include "bytes_zero.hpp" | |
56 #endif | |
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57 #ifdef TARGET_ARCH_arm |
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58 # include "bytes_arm.hpp" |
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59 #endif |
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60 #ifdef TARGET_ARCH_ppc |
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61 # include "bytes_ppc.hpp" |
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62 #endif |
0 | 63 |
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64 #define NOFAILOVER_MAJOR_VERSION 51 |
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65 #define NONZERO_PADDING_BYTES_IN_SWITCH_MAJOR_VERSION 51 |
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66 #define STATIC_METHOD_IN_INTERFACE_MAJOR_VERSION 52 |
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67 |
0 | 68 // Access to external entry for VerifyClassCodes - old byte code verifier |
69 | |
70 extern "C" { | |
71 typedef jboolean (*verify_byte_codes_fn_t)(JNIEnv *, jclass, char *, jint); | |
72 typedef jboolean (*verify_byte_codes_fn_new_t)(JNIEnv *, jclass, char *, jint, jint); | |
73 } | |
74 | |
75 static void* volatile _verify_byte_codes_fn = NULL; | |
76 | |
77 static volatile jint _is_new_verify_byte_codes_fn = (jint) true; | |
78 | |
79 static void* verify_byte_codes_fn() { | |
80 if (_verify_byte_codes_fn == NULL) { | |
81 void *lib_handle = os::native_java_library(); | |
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82 void *func = os::dll_lookup(lib_handle, "VerifyClassCodesForMajorVersion"); |
0 | 83 OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
84 if (func == NULL) { | |
85 OrderAccess::release_store(&_is_new_verify_byte_codes_fn, false); | |
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86 func = os::dll_lookup(lib_handle, "VerifyClassCodes"); |
0 | 87 OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
88 } | |
89 } | |
90 return (void*)_verify_byte_codes_fn; | |
91 } | |
92 | |
93 | |
94 // Methods in Verifier | |
95 | |
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96 bool Verifier::should_verify_for(oop class_loader, bool should_verify_class) { |
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97 return (class_loader == NULL || !should_verify_class) ? |
0 | 98 BytecodeVerificationLocal : BytecodeVerificationRemote; |
99 } | |
100 | |
101 bool Verifier::relax_verify_for(oop loader) { | |
102 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
103 bool need_verify = | |
104 // verifyAll | |
105 (BytecodeVerificationLocal && BytecodeVerificationRemote) || | |
106 // verifyRemote | |
107 (!BytecodeVerificationLocal && BytecodeVerificationRemote && !trusted); | |
108 return !need_verify; | |
109 } | |
110 | |
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111 bool Verifier::verify(instanceKlassHandle klass, Verifier::Mode mode, bool should_verify_class, TRAPS) { |
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112 HandleMark hm; |
0 | 113 ResourceMark rm(THREAD); |
114 | |
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115 Symbol* exception_name = NULL; |
0 | 116 const size_t message_buffer_len = klass->name()->utf8_length() + 1024; |
117 char* message_buffer = NEW_RESOURCE_ARRAY(char, message_buffer_len); | |
6605 | 118 char* exception_message = message_buffer; |
0 | 119 |
120 const char* klassName = klass->external_name(); | |
6605 | 121 bool can_failover = FailOverToOldVerifier && |
122 klass->major_version() < NOFAILOVER_MAJOR_VERSION; | |
0 | 123 |
124 // If the class should be verified, first see if we can use the split | |
125 // verifier. If not, or if verification fails and FailOverToOldVerifier | |
126 // is set, then call the inference verifier. | |
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127 if (is_eligible_for_verification(klass, should_verify_class)) { |
0 | 128 if (TraceClassInitialization) { |
129 tty->print_cr("Start class verification for: %s", klassName); | |
130 } | |
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131 if (klass->major_version() >= STACKMAP_ATTRIBUTE_MAJOR_VERSION) { |
6605 | 132 ClassVerifier split_verifier(klass, THREAD); |
133 split_verifier.verify_class(THREAD); | |
134 exception_name = split_verifier.result(); | |
135 if (can_failover && !HAS_PENDING_EXCEPTION && | |
0 | 136 (exception_name == vmSymbols::java_lang_VerifyError() || |
137 exception_name == vmSymbols::java_lang_ClassFormatError())) { | |
6605 | 138 if (TraceClassInitialization || VerboseVerification) { |
0 | 139 tty->print_cr( |
140 "Fail over class verification to old verifier for: %s", klassName); | |
141 } | |
142 exception_name = inference_verify( | |
143 klass, message_buffer, message_buffer_len, THREAD); | |
144 } | |
6605 | 145 if (exception_name != NULL) { |
146 exception_message = split_verifier.exception_message(); | |
147 } | |
0 | 148 } else { |
149 exception_name = inference_verify( | |
150 klass, message_buffer, message_buffer_len, THREAD); | |
151 } | |
152 | |
6605 | 153 if (TraceClassInitialization || VerboseVerification) { |
0 | 154 if (HAS_PENDING_EXCEPTION) { |
155 tty->print("Verification for %s has", klassName); | |
156 tty->print_cr(" exception pending %s ", | |
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157 InstanceKlass::cast(PENDING_EXCEPTION->klass())->external_name()); |
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158 } else if (exception_name != NULL) { |
0 | 159 tty->print_cr("Verification for %s failed", klassName); |
160 } | |
161 tty->print_cr("End class verification for: %s", klassName); | |
162 } | |
163 } | |
164 | |
165 if (HAS_PENDING_EXCEPTION) { | |
166 return false; // use the existing exception | |
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167 } else if (exception_name == NULL) { |
0 | 168 return true; // verifcation succeeded |
169 } else { // VerifyError or ClassFormatError to be created and thrown | |
170 ResourceMark rm(THREAD); | |
171 instanceKlassHandle kls = | |
172 SystemDictionary::resolve_or_fail(exception_name, true, CHECK_false); | |
173 while (!kls.is_null()) { | |
174 if (kls == klass) { | |
175 // If the class being verified is the exception we're creating | |
176 // or one of it's superclasses, we're in trouble and are going | |
177 // to infinitely recurse when we try to initialize the exception. | |
178 // So bail out here by throwing the preallocated VM error. | |
179 THROW_OOP_(Universe::virtual_machine_error_instance(), false); | |
180 } | |
181 kls = kls->super(); | |
182 } | |
183 message_buffer[message_buffer_len - 1] = '\0'; // just to be sure | |
6605 | 184 THROW_MSG_(exception_name, exception_message, false); |
0 | 185 } |
186 } | |
187 | |
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188 bool Verifier::is_eligible_for_verification(instanceKlassHandle klass, bool should_verify_class) { |
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189 Symbol* name = klass->name(); |
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190 Klass* refl_magic_klass = SystemDictionary::reflect_MagicAccessorImpl_klass(); |
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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()) { |
367 ss->print_cr(""); | |
368 ss->print_cr("Exception Details:"); | |
369 location_details(ss, method); | |
370 reason_details(ss); | |
371 frame_details(ss); | |
372 bytecode_details(ss, method); | |
373 handler_details(ss, method); | |
374 stackmap_details(ss, method); | |
375 } | |
376 } | |
377 | |
378 void ErrorContext::reason_details(outputStream* ss) const { | |
379 streamIndentor si(ss); | |
380 ss->indent().print_cr("Reason:"); | |
381 streamIndentor si2(ss); | |
382 ss->indent().print(""); | |
383 switch (_fault) { | |
384 case INVALID_BYTECODE: | |
385 ss->print("Error exists in the bytecode"); | |
386 break; | |
387 case WRONG_TYPE: | |
388 if (_expected.is_valid()) { | |
389 ss->print("Type "); | |
390 _type.details(ss); | |
391 ss->print(" is not assignable to "); | |
392 _expected.details(ss); | |
393 } else { | |
394 ss->print("Invalid type: "); | |
395 _type.details(ss); | |
396 } | |
397 break; | |
398 case FLAGS_MISMATCH: | |
399 if (_expected.is_valid()) { | |
400 ss->print("Current frame's flags are not assignable " | |
401 "to stack map frame's."); | |
402 } else { | |
403 ss->print("Current frame's flags are invalid in this context."); | |
404 } | |
405 break; | |
406 case BAD_CP_INDEX: | |
407 ss->print("Constant pool index %d is invalid", _type.index()); | |
408 break; | |
409 case BAD_LOCAL_INDEX: | |
410 ss->print("Local index %d is invalid", _type.index()); | |
411 break; | |
412 case LOCALS_SIZE_MISMATCH: | |
413 ss->print("Current frame's local size doesn't match stackmap."); | |
414 break; | |
415 case STACK_SIZE_MISMATCH: | |
416 ss->print("Current frame's stack size doesn't match stackmap."); | |
417 break; | |
418 case STACK_OVERFLOW: | |
419 ss->print("Exceeded max stack size."); | |
420 break; | |
421 case STACK_UNDERFLOW: | |
422 ss->print("Attempt to pop empty stack."); | |
423 break; | |
424 case MISSING_STACKMAP: | |
425 ss->print("Expected stackmap frame at this location."); | |
426 break; | |
427 case BAD_STACKMAP: | |
428 ss->print("Invalid stackmap specification."); | |
429 break; | |
430 case UNKNOWN: | |
431 default: | |
432 ShouldNotReachHere(); | |
433 ss->print_cr("Unknown"); | |
434 } | |
435 ss->print_cr(""); | |
436 } | |
437 | |
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438 void ErrorContext::location_details(outputStream* ss, const Method* method) const { |
6605 | 439 if (_bci != -1 && method != NULL) { |
440 streamIndentor si(ss); | |
441 const char* bytecode_name = "<invalid>"; | |
442 if (method->validate_bci_from_bcx(_bci) != -1) { | |
443 Bytecodes::Code code = Bytecodes::code_or_bp_at(method->bcp_from(_bci)); | |
444 if (Bytecodes::is_defined(code)) { | |
445 bytecode_name = Bytecodes::name(code); | |
446 } else { | |
447 bytecode_name = "<illegal>"; | |
448 } | |
449 } | |
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450 InstanceKlass* ik = method->method_holder(); |
6605 | 451 ss->indent().print_cr("Location:"); |
452 streamIndentor si2(ss); | |
453 ss->indent().print_cr("%s.%s%s @%d: %s", | |
454 ik->name()->as_C_string(), method->name()->as_C_string(), | |
455 method->signature()->as_C_string(), _bci, bytecode_name); | |
456 } | |
457 } | |
458 | |
459 void ErrorContext::frame_details(outputStream* ss) const { | |
460 streamIndentor si(ss); | |
461 if (_type.is_valid() && _type.frame() != NULL) { | |
462 ss->indent().print_cr("Current Frame:"); | |
463 streamIndentor si2(ss); | |
464 _type.frame()->print_on(ss); | |
465 } | |
466 if (_expected.is_valid() && _expected.frame() != NULL) { | |
467 ss->indent().print_cr("Stackmap Frame:"); | |
468 streamIndentor si2(ss); | |
469 _expected.frame()->print_on(ss); | |
470 } | |
471 } | |
472 | |
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473 void ErrorContext::bytecode_details(outputStream* ss, const Method* method) const { |
6605 | 474 if (method != NULL) { |
475 streamIndentor si(ss); | |
476 ss->indent().print_cr("Bytecode:"); | |
477 streamIndentor si2(ss); | |
478 ss->print_data(method->code_base(), method->code_size(), false); | |
479 } | |
480 } | |
481 | |
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482 void ErrorContext::handler_details(outputStream* ss, const Method* method) const { |
6605 | 483 if (method != NULL) { |
484 streamIndentor si(ss); | |
485 ExceptionTable table(method); | |
486 if (table.length() > 0) { | |
487 ss->indent().print_cr("Exception Handler Table:"); | |
488 streamIndentor si2(ss); | |
489 for (int i = 0; i < table.length(); ++i) { | |
490 ss->indent().print_cr("bci [%d, %d] => handler: %d", table.start_pc(i), | |
491 table.end_pc(i), table.handler_pc(i)); | |
492 } | |
493 } | |
494 } | |
495 } | |
496 | |
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497 void ErrorContext::stackmap_details(outputStream* ss, const Method* method) const { |
6605 | 498 if (method != NULL && method->has_stackmap_table()) { |
499 streamIndentor si(ss); | |
500 ss->indent().print_cr("Stackmap Table:"); | |
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501 Array<u1>* data = method->stackmap_data(); |
6605 | 502 stack_map_table* sm_table = |
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503 stack_map_table::at((address)data->adr_at(0)); |
6605 | 504 stack_map_frame* sm_frame = sm_table->entries(); |
505 streamIndentor si2(ss); | |
506 int current_offset = -1; | |
507 for (u2 i = 0; i < sm_table->number_of_entries(); ++i) { | |
508 ss->indent(); | |
509 sm_frame->print_on(ss, current_offset); | |
510 ss->print_cr(""); | |
511 current_offset += sm_frame->offset_delta(); | |
512 sm_frame = sm_frame->next(); | |
513 } | |
514 } | |
515 } | |
516 | |
0 | 517 // Methods in ClassVerifier |
518 | |
519 ClassVerifier::ClassVerifier( | |
6605 | 520 instanceKlassHandle klass, TRAPS) |
521 : _thread(THREAD), _exception_type(NULL), _message(NULL), _klass(klass) { | |
0 | 522 _this_type = VerificationType::reference_type(klass->name()); |
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523 // Create list to hold symbols in reference area. |
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524 _symbols = new GrowableArray<Symbol*>(100, 0, NULL); |
0 | 525 } |
526 | |
527 ClassVerifier::~ClassVerifier() { | |
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528 // Decrement the reference count for any symbols created. |
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529 for (int i = 0; i < _symbols->length(); i++) { |
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530 Symbol* s = _symbols->at(i); |
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531 s->decrement_refcount(); |
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532 } |
0 | 533 } |
534 | |
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535 VerificationType ClassVerifier::object_type() const { |
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536 return VerificationType::reference_type(vmSymbols::java_lang_Object()); |
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537 } |
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538 |
6605 | 539 TypeOrigin ClassVerifier::ref_ctx(const char* sig, TRAPS) { |
540 VerificationType vt = VerificationType::reference_type( | |
541 create_temporary_symbol(sig, (int)strlen(sig), THREAD)); | |
542 return TypeOrigin::implicit(vt); | |
543 } | |
544 | |
0 | 545 void ClassVerifier::verify_class(TRAPS) { |
6605 | 546 if (VerboseVerification) { |
0 | 547 tty->print_cr("Verifying class %s with new format", |
548 _klass->external_name()); | |
549 } | |
550 | |
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551 Array<Method*>* methods = _klass->methods(); |
0 | 552 int num_methods = methods->length(); |
553 | |
554 for (int index = 0; index < num_methods; index++) { | |
1570 | 555 // Check for recursive re-verification before each method. |
556 if (was_recursively_verified()) return; | |
557 | |
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558 Method* m = methods->at(index); |
6934 | 559 if (m->is_native() || m->is_abstract() || m->is_overpass()) { |
0 | 560 // If m is native or abstract, skip it. It is checked in class file |
6934 | 561 // parser that methods do not override a final method. Overpass methods |
562 // are trusted since the VM generates them. | |
0 | 563 continue; |
564 } | |
565 verify_method(methodHandle(THREAD, m), CHECK_VERIFY(this)); | |
566 } | |
1570 | 567 |
6605 | 568 if (VerboseVerification || TraceClassInitialization) { |
1570 | 569 if (was_recursively_verified()) |
570 tty->print_cr("Recursive verification detected for: %s", | |
571 _klass->external_name()); | |
572 } | |
0 | 573 } |
574 | |
575 void ClassVerifier::verify_method(methodHandle m, TRAPS) { | |
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576 HandleMark hm(THREAD); |
0 | 577 _method = m; // initialize _method |
6605 | 578 if (VerboseVerification) { |
0 | 579 tty->print_cr("Verifying method %s", m->name_and_sig_as_C_string()); |
580 } | |
581 | |
582 const char* bad_type_msg = "Bad type on operand stack in %s"; | |
583 | |
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584 int32_t max_stack = m->verifier_max_stack(); |
0 | 585 int32_t max_locals = m->max_locals(); |
586 constantPoolHandle cp(THREAD, m->constants()); | |
587 | |
588 if (!SignatureVerifier::is_valid_method_signature(m->signature())) { | |
589 class_format_error("Invalid method signature"); | |
590 return; | |
591 } | |
592 | |
593 // Initial stack map frame: offset is 0, stack is initially empty. | |
594 StackMapFrame current_frame(max_locals, max_stack, this); | |
595 // Set initial locals | |
596 VerificationType return_type = current_frame.set_locals_from_arg( | |
597 m, current_type(), CHECK_VERIFY(this)); | |
598 | |
599 int32_t stackmap_index = 0; // index to the stackmap array | |
600 | |
601 u4 code_length = m->code_size(); | |
602 | |
603 // Scan the bytecode and map each instruction's start offset to a number. | |
604 char* code_data = generate_code_data(m, code_length, CHECK_VERIFY(this)); | |
605 | |
606 int ex_min = code_length; | |
607 int ex_max = -1; | |
608 // Look through each item on the exception table. Each of the fields must refer | |
609 // to a legal instruction. | |
610 verify_exception_handler_table( | |
611 code_length, code_data, ex_min, ex_max, CHECK_VERIFY(this)); | |
612 | |
613 // Look through each entry on the local variable table and make sure | |
614 // its range of code array offsets is valid. (4169817) | |
615 if (m->has_localvariable_table()) { | |
616 verify_local_variable_table(code_length, code_data, CHECK_VERIFY(this)); | |
617 } | |
618 | |
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619 Array<u1>* stackmap_data = m->stackmap_data(); |
0 | 620 StackMapStream stream(stackmap_data); |
621 StackMapReader reader(this, &stream, code_data, code_length, THREAD); | |
622 StackMapTable stackmap_table(&reader, ¤t_frame, max_locals, max_stack, | |
623 code_data, code_length, CHECK_VERIFY(this)); | |
624 | |
6605 | 625 if (VerboseVerification) { |
626 stackmap_table.print_on(tty); | |
0 | 627 } |
628 | |
629 RawBytecodeStream bcs(m); | |
630 | |
631 // Scan the byte code linearly from the start to the end | |
632 bool no_control_flow = false; // Set to true when there is no direct control | |
633 // flow from current instruction to the next | |
634 // instruction in sequence | |
635 Bytecodes::Code opcode; | |
636 while (!bcs.is_last_bytecode()) { | |
1570 | 637 // Check for recursive re-verification before each bytecode. |
638 if (was_recursively_verified()) return; | |
639 | |
0 | 640 opcode = bcs.raw_next(); |
641 u2 bci = bcs.bci(); | |
642 | |
643 // Set current frame's offset to bci | |
644 current_frame.set_offset(bci); | |
6605 | 645 current_frame.set_mark(); |
0 | 646 |
647 // Make sure every offset in stackmap table point to the beginning to | |
648 // an instruction. Match current_frame to stackmap_table entry with | |
649 // the same offset if exists. | |
650 stackmap_index = verify_stackmap_table( | |
651 stackmap_index, bci, ¤t_frame, &stackmap_table, | |
652 no_control_flow, CHECK_VERIFY(this)); | |
653 | |
6605 | 654 |
0 | 655 bool this_uninit = false; // Set to true when invokespecial <init> initialized 'this' |
656 | |
657 // Merge with the next instruction | |
658 { | |
659 u2 index; | |
660 int target; | |
661 VerificationType type, type2; | |
662 VerificationType atype; | |
663 | |
664 #ifndef PRODUCT | |
6605 | 665 if (VerboseVerification) { |
666 current_frame.print_on(tty); | |
0 | 667 tty->print_cr("offset = %d, opcode = %s", bci, Bytecodes::name(opcode)); |
668 } | |
669 #endif | |
670 | |
671 // Make sure wide instruction is in correct format | |
672 if (bcs.is_wide()) { | |
673 if (opcode != Bytecodes::_iinc && opcode != Bytecodes::_iload && | |
674 opcode != Bytecodes::_aload && opcode != Bytecodes::_lload && | |
675 opcode != Bytecodes::_istore && opcode != Bytecodes::_astore && | |
676 opcode != Bytecodes::_lstore && opcode != Bytecodes::_fload && | |
677 opcode != Bytecodes::_dload && opcode != Bytecodes::_fstore && | |
678 opcode != Bytecodes::_dstore) { | |
6605 | 679 /* Unreachable? RawBytecodeStream's raw_next() returns 'illegal' |
680 * if we encounter a wide instruction that modifies an invalid | |
681 * opcode (not one of the ones listed above) */ | |
682 verify_error(ErrorContext::bad_code(bci), "Bad wide instruction"); | |
0 | 683 return; |
684 } | |
685 } | |
686 | |
687 switch (opcode) { | |
688 case Bytecodes::_nop : | |
689 no_control_flow = false; break; | |
690 case Bytecodes::_aconst_null : | |
691 current_frame.push_stack( | |
692 VerificationType::null_type(), CHECK_VERIFY(this)); | |
693 no_control_flow = false; break; | |
694 case Bytecodes::_iconst_m1 : | |
695 case Bytecodes::_iconst_0 : | |
696 case Bytecodes::_iconst_1 : | |
697 case Bytecodes::_iconst_2 : | |
698 case Bytecodes::_iconst_3 : | |
699 case Bytecodes::_iconst_4 : | |
700 case Bytecodes::_iconst_5 : | |
701 current_frame.push_stack( | |
702 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
703 no_control_flow = false; break; | |
704 case Bytecodes::_lconst_0 : | |
705 case Bytecodes::_lconst_1 : | |
706 current_frame.push_stack_2( | |
707 VerificationType::long_type(), | |
708 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
709 no_control_flow = false; break; | |
710 case Bytecodes::_fconst_0 : | |
711 case Bytecodes::_fconst_1 : | |
712 case Bytecodes::_fconst_2 : | |
713 current_frame.push_stack( | |
714 VerificationType::float_type(), CHECK_VERIFY(this)); | |
715 no_control_flow = false; break; | |
716 case Bytecodes::_dconst_0 : | |
717 case Bytecodes::_dconst_1 : | |
718 current_frame.push_stack_2( | |
719 VerificationType::double_type(), | |
720 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
721 no_control_flow = false; break; | |
722 case Bytecodes::_sipush : | |
723 case Bytecodes::_bipush : | |
724 current_frame.push_stack( | |
725 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
726 no_control_flow = false; break; | |
727 case Bytecodes::_ldc : | |
728 verify_ldc( | |
1565 | 729 opcode, bcs.get_index_u1(), ¤t_frame, |
0 | 730 cp, bci, CHECK_VERIFY(this)); |
731 no_control_flow = false; break; | |
732 case Bytecodes::_ldc_w : | |
733 case Bytecodes::_ldc2_w : | |
734 verify_ldc( | |
1565 | 735 opcode, bcs.get_index_u2(), ¤t_frame, |
0 | 736 cp, bci, CHECK_VERIFY(this)); |
737 no_control_flow = false; break; | |
738 case Bytecodes::_iload : | |
739 verify_iload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
740 no_control_flow = false; break; | |
741 case Bytecodes::_iload_0 : | |
742 case Bytecodes::_iload_1 : | |
743 case Bytecodes::_iload_2 : | |
744 case Bytecodes::_iload_3 : | |
745 index = opcode - Bytecodes::_iload_0; | |
746 verify_iload(index, ¤t_frame, CHECK_VERIFY(this)); | |
747 no_control_flow = false; break; | |
748 case Bytecodes::_lload : | |
749 verify_lload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
750 no_control_flow = false; break; | |
751 case Bytecodes::_lload_0 : | |
752 case Bytecodes::_lload_1 : | |
753 case Bytecodes::_lload_2 : | |
754 case Bytecodes::_lload_3 : | |
755 index = opcode - Bytecodes::_lload_0; | |
756 verify_lload(index, ¤t_frame, CHECK_VERIFY(this)); | |
757 no_control_flow = false; break; | |
758 case Bytecodes::_fload : | |
759 verify_fload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
760 no_control_flow = false; break; | |
761 case Bytecodes::_fload_0 : | |
762 case Bytecodes::_fload_1 : | |
763 case Bytecodes::_fload_2 : | |
764 case Bytecodes::_fload_3 : | |
765 index = opcode - Bytecodes::_fload_0; | |
766 verify_fload(index, ¤t_frame, CHECK_VERIFY(this)); | |
767 no_control_flow = false; break; | |
768 case Bytecodes::_dload : | |
769 verify_dload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
770 no_control_flow = false; break; | |
771 case Bytecodes::_dload_0 : | |
772 case Bytecodes::_dload_1 : | |
773 case Bytecodes::_dload_2 : | |
774 case Bytecodes::_dload_3 : | |
775 index = opcode - Bytecodes::_dload_0; | |
776 verify_dload(index, ¤t_frame, CHECK_VERIFY(this)); | |
777 no_control_flow = false; break; | |
778 case Bytecodes::_aload : | |
779 verify_aload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
780 no_control_flow = false; break; | |
781 case Bytecodes::_aload_0 : | |
782 case Bytecodes::_aload_1 : | |
783 case Bytecodes::_aload_2 : | |
784 case Bytecodes::_aload_3 : | |
785 index = opcode - Bytecodes::_aload_0; | |
786 verify_aload(index, ¤t_frame, CHECK_VERIFY(this)); | |
787 no_control_flow = false; break; | |
788 case Bytecodes::_iaload : | |
789 type = current_frame.pop_stack( | |
790 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
791 atype = current_frame.pop_stack( | |
792 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
793 if (!atype.is_int_array()) { | |
6605 | 794 verify_error(ErrorContext::bad_type(bci, |
795 current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), | |
796 bad_type_msg, "iaload"); | |
0 | 797 return; |
798 } | |
799 current_frame.push_stack( | |
800 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
801 no_control_flow = false; break; | |
802 case Bytecodes::_baload : | |
803 type = current_frame.pop_stack( | |
804 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
805 atype = current_frame.pop_stack( | |
806 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
807 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
6605 | 808 verify_error( |
809 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
810 bad_type_msg, "baload"); | |
0 | 811 return; |
812 } | |
813 current_frame.push_stack( | |
814 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
815 no_control_flow = false; break; | |
816 case Bytecodes::_caload : | |
817 type = current_frame.pop_stack( | |
818 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
819 atype = current_frame.pop_stack( | |
820 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
821 if (!atype.is_char_array()) { | |
6605 | 822 verify_error(ErrorContext::bad_type(bci, |
823 current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), | |
824 bad_type_msg, "caload"); | |
0 | 825 return; |
826 } | |
827 current_frame.push_stack( | |
828 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
829 no_control_flow = false; break; | |
830 case Bytecodes::_saload : | |
831 type = current_frame.pop_stack( | |
832 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
833 atype = current_frame.pop_stack( | |
834 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
835 if (!atype.is_short_array()) { | |
6605 | 836 verify_error(ErrorContext::bad_type(bci, |
837 current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), | |
838 bad_type_msg, "saload"); | |
0 | 839 return; |
840 } | |
841 current_frame.push_stack( | |
842 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
843 no_control_flow = false; break; | |
844 case Bytecodes::_laload : | |
845 type = current_frame.pop_stack( | |
846 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
847 atype = current_frame.pop_stack( | |
848 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
849 if (!atype.is_long_array()) { | |
6605 | 850 verify_error(ErrorContext::bad_type(bci, |
851 current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), | |
852 bad_type_msg, "laload"); | |
0 | 853 return; |
854 } | |
855 current_frame.push_stack_2( | |
856 VerificationType::long_type(), | |
857 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
858 no_control_flow = false; break; | |
859 case Bytecodes::_faload : | |
860 type = current_frame.pop_stack( | |
861 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
862 atype = current_frame.pop_stack( | |
863 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
864 if (!atype.is_float_array()) { | |
6605 | 865 verify_error(ErrorContext::bad_type(bci, |
866 current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), | |
867 bad_type_msg, "faload"); | |
0 | 868 return; |
869 } | |
870 current_frame.push_stack( | |
871 VerificationType::float_type(), CHECK_VERIFY(this)); | |
872 no_control_flow = false; break; | |
873 case Bytecodes::_daload : | |
874 type = current_frame.pop_stack( | |
875 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
876 atype = current_frame.pop_stack( | |
877 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
878 if (!atype.is_double_array()) { | |
6605 | 879 verify_error(ErrorContext::bad_type(bci, |
880 current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), | |
881 bad_type_msg, "daload"); | |
0 | 882 return; |
883 } | |
884 current_frame.push_stack_2( | |
885 VerificationType::double_type(), | |
886 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
887 no_control_flow = false; break; | |
888 case Bytecodes::_aaload : { | |
889 type = current_frame.pop_stack( | |
890 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
891 atype = current_frame.pop_stack( | |
892 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
893 if (!atype.is_reference_array()) { | |
6605 | 894 verify_error(ErrorContext::bad_type(bci, |
895 current_frame.stack_top_ctx(), | |
896 TypeOrigin::implicit(VerificationType::reference_check())), | |
897 bad_type_msg, "aaload"); | |
0 | 898 return; |
899 } | |
900 if (atype.is_null()) { | |
901 current_frame.push_stack( | |
902 VerificationType::null_type(), CHECK_VERIFY(this)); | |
903 } else { | |
904 VerificationType component = | |
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905 atype.get_component(this, CHECK_VERIFY(this)); |
0 | 906 current_frame.push_stack(component, CHECK_VERIFY(this)); |
907 } | |
908 no_control_flow = false; break; | |
909 } | |
910 case Bytecodes::_istore : | |
911 verify_istore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
912 no_control_flow = false; break; | |
913 case Bytecodes::_istore_0 : | |
914 case Bytecodes::_istore_1 : | |
915 case Bytecodes::_istore_2 : | |
916 case Bytecodes::_istore_3 : | |
917 index = opcode - Bytecodes::_istore_0; | |
918 verify_istore(index, ¤t_frame, CHECK_VERIFY(this)); | |
919 no_control_flow = false; break; | |
920 case Bytecodes::_lstore : | |
921 verify_lstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
922 no_control_flow = false; break; | |
923 case Bytecodes::_lstore_0 : | |
924 case Bytecodes::_lstore_1 : | |
925 case Bytecodes::_lstore_2 : | |
926 case Bytecodes::_lstore_3 : | |
927 index = opcode - Bytecodes::_lstore_0; | |
928 verify_lstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
929 no_control_flow = false; break; | |
930 case Bytecodes::_fstore : | |
931 verify_fstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
932 no_control_flow = false; break; | |
933 case Bytecodes::_fstore_0 : | |
934 case Bytecodes::_fstore_1 : | |
935 case Bytecodes::_fstore_2 : | |
936 case Bytecodes::_fstore_3 : | |
937 index = opcode - Bytecodes::_fstore_0; | |
938 verify_fstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
939 no_control_flow = false; break; | |
940 case Bytecodes::_dstore : | |
941 verify_dstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
942 no_control_flow = false; break; | |
943 case Bytecodes::_dstore_0 : | |
944 case Bytecodes::_dstore_1 : | |
945 case Bytecodes::_dstore_2 : | |
946 case Bytecodes::_dstore_3 : | |
947 index = opcode - Bytecodes::_dstore_0; | |
948 verify_dstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
949 no_control_flow = false; break; | |
950 case Bytecodes::_astore : | |
951 verify_astore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
952 no_control_flow = false; break; | |
953 case Bytecodes::_astore_0 : | |
954 case Bytecodes::_astore_1 : | |
955 case Bytecodes::_astore_2 : | |
956 case Bytecodes::_astore_3 : | |
957 index = opcode - Bytecodes::_astore_0; | |
958 verify_astore(index, ¤t_frame, CHECK_VERIFY(this)); | |
959 no_control_flow = false; break; | |
960 case Bytecodes::_iastore : | |
961 type = current_frame.pop_stack( | |
962 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
963 type2 = current_frame.pop_stack( | |
964 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
965 atype = current_frame.pop_stack( | |
966 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
967 if (!atype.is_int_array()) { | |
6605 | 968 verify_error(ErrorContext::bad_type(bci, |
969 current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), | |
970 bad_type_msg, "iastore"); | |
0 | 971 return; |
972 } | |
973 no_control_flow = false; break; | |
974 case Bytecodes::_bastore : | |
975 type = current_frame.pop_stack( | |
976 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
977 type2 = current_frame.pop_stack( | |
978 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
979 atype = current_frame.pop_stack( | |
980 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
981 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
6605 | 982 verify_error( |
983 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
984 bad_type_msg, "bastore"); | |
0 | 985 return; |
986 } | |
987 no_control_flow = false; break; | |
988 case Bytecodes::_castore : | |
989 current_frame.pop_stack( | |
990 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
991 current_frame.pop_stack( | |
992 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
993 atype = current_frame.pop_stack( | |
994 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
995 if (!atype.is_char_array()) { | |
6605 | 996 verify_error(ErrorContext::bad_type(bci, |
997 current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), | |
998 bad_type_msg, "castore"); | |
0 | 999 return; |
1000 } | |
1001 no_control_flow = false; break; | |
1002 case Bytecodes::_sastore : | |
1003 current_frame.pop_stack( | |
1004 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1005 current_frame.pop_stack( | |
1006 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1007 atype = current_frame.pop_stack( | |
1008 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1009 if (!atype.is_short_array()) { | |
6605 | 1010 verify_error(ErrorContext::bad_type(bci, |
1011 current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), | |
1012 bad_type_msg, "sastore"); | |
0 | 1013 return; |
1014 } | |
1015 no_control_flow = false; break; | |
1016 case Bytecodes::_lastore : | |
1017 current_frame.pop_stack_2( | |
1018 VerificationType::long2_type(), | |
1019 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1020 current_frame.pop_stack( | |
1021 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1022 atype = current_frame.pop_stack( | |
1023 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1024 if (!atype.is_long_array()) { | |
6605 | 1025 verify_error(ErrorContext::bad_type(bci, |
1026 current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), | |
1027 bad_type_msg, "lastore"); | |
0 | 1028 return; |
1029 } | |
1030 no_control_flow = false; break; | |
1031 case Bytecodes::_fastore : | |
1032 current_frame.pop_stack( | |
1033 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1034 current_frame.pop_stack | |
1035 (VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1036 atype = current_frame.pop_stack( | |
1037 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1038 if (!atype.is_float_array()) { | |
6605 | 1039 verify_error(ErrorContext::bad_type(bci, |
1040 current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), | |
1041 bad_type_msg, "fastore"); | |
0 | 1042 return; |
1043 } | |
1044 no_control_flow = false; break; | |
1045 case Bytecodes::_dastore : | |
1046 current_frame.pop_stack_2( | |
1047 VerificationType::double2_type(), | |
1048 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1049 current_frame.pop_stack( | |
1050 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1051 atype = current_frame.pop_stack( | |
1052 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1053 if (!atype.is_double_array()) { | |
6605 | 1054 verify_error(ErrorContext::bad_type(bci, |
1055 current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), | |
1056 bad_type_msg, "dastore"); | |
0 | 1057 return; |
1058 } | |
1059 no_control_flow = false; break; | |
1060 case Bytecodes::_aastore : | |
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|
1061 type = current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
0 | 1062 type2 = current_frame.pop_stack( |
1063 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1064 atype = current_frame.pop_stack( | |
1065 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1066 // more type-checking is done at runtime | |
1067 if (!atype.is_reference_array()) { | |
6605 | 1068 verify_error(ErrorContext::bad_type(bci, |
1069 current_frame.stack_top_ctx(), | |
1070 TypeOrigin::implicit(VerificationType::reference_check())), | |
1071 bad_type_msg, "aastore"); | |
0 | 1072 return; |
1073 } | |
1074 // 4938384: relaxed constraint in JVMS 3nd edition. | |
1075 no_control_flow = false; break; | |
1076 case Bytecodes::_pop : | |
1077 current_frame.pop_stack( | |
1078 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1079 no_control_flow = false; break; | |
1080 case Bytecodes::_pop2 : | |
1081 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1082 if (type.is_category1()) { | |
1083 current_frame.pop_stack( | |
1084 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1085 } else if (type.is_category2_2nd()) { | |
1086 current_frame.pop_stack( | |
1087 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
1088 } else { | |
6605 | 1089 /* Unreachable? Would need a category2_1st on TOS |
1090 * which does not appear possible. */ | |
1091 verify_error( | |
1092 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
1093 bad_type_msg, "pop2"); | |
0 | 1094 return; |
1095 } | |
1096 no_control_flow = false; break; | |
1097 case Bytecodes::_dup : | |
1098 type = current_frame.pop_stack( | |
1099 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1100 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1101 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1102 no_control_flow = false; break; | |
1103 case Bytecodes::_dup_x1 : | |
1104 type = current_frame.pop_stack( | |
1105 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1106 type2 = current_frame.pop_stack( | |
1107 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1108 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1109 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1110 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1111 no_control_flow = false; break; | |
1112 case Bytecodes::_dup_x2 : | |
1113 { | |
1114 VerificationType type3; | |
1115 type = current_frame.pop_stack( | |
1116 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1117 type2 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1118 if (type2.is_category1()) { | |
1119 type3 = current_frame.pop_stack( | |
1120 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1121 } else if (type2.is_category2_2nd()) { | |
1122 type3 = current_frame.pop_stack( | |
1123 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
1124 } else { | |
6605 | 1125 /* Unreachable? Would need a category2_1st at stack depth 2 with |
1126 * a category1 on TOS which does not appear possible. */ | |
1127 verify_error(ErrorContext::bad_type( | |
1128 bci, current_frame.stack_top_ctx()), bad_type_msg, "dup_x2"); | |
0 | 1129 return; |
1130 } | |
1131 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1132 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
1133 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1134 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1135 no_control_flow = false; break; | |
1136 } | |
1137 case Bytecodes::_dup2 : | |
1138 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1139 if (type.is_category1()) { | |
1140 type2 = current_frame.pop_stack( | |
1141 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1142 } else if (type.is_category2_2nd()) { | |
1143 type2 = current_frame.pop_stack( | |
1144 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
1145 } else { | |
6605 | 1146 /* Unreachable? Would need a category2_1st on TOS which does not |
1147 * appear possible. */ | |
1148 verify_error( | |
1149 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
1150 bad_type_msg, "dup2"); | |
0 | 1151 return; |
1152 } | |
1153 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1154 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1155 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1156 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1157 no_control_flow = false; break; | |
1158 case Bytecodes::_dup2_x1 : | |
1159 { | |
1160 VerificationType type3; | |
1161 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1162 if (type.is_category1()) { | |
1163 type2 = current_frame.pop_stack( | |
1164 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
6605 | 1165 } else if (type.is_category2_2nd()) { |
1166 type2 = current_frame.pop_stack( | |
1167 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
0 | 1168 } else { |
6605 | 1169 /* Unreachable? Would need a category2_1st on TOS which does |
1170 * not appear possible. */ | |
1171 verify_error( | |
1172 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
1173 bad_type_msg, "dup2_x1"); | |
0 | 1174 return; |
1175 } | |
1176 type3 = current_frame.pop_stack( | |
1177 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1178 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1179 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1180 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
1181 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1182 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1183 no_control_flow = false; break; | |
1184 } | |
1185 case Bytecodes::_dup2_x2 : | |
1186 { | |
1187 VerificationType type3, type4; | |
1188 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1189 if (type.is_category1()) { | |
1190 type2 = current_frame.pop_stack( | |
1191 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1192 } else if (type.is_category2_2nd()) { | |
1193 type2 = current_frame.pop_stack( | |
1194 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
1195 } else { | |
6605 | 1196 /* Unreachable? Would need a category2_1st on TOS which does |
1197 * not appear possible. */ | |
1198 verify_error( | |
1199 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
1200 bad_type_msg, "dup2_x2"); | |
0 | 1201 return; |
1202 } | |
1203 type3 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
1204 if (type3.is_category1()) { | |
1205 type4 = current_frame.pop_stack( | |
1206 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1207 } else if (type3.is_category2_2nd()) { | |
1208 type4 = current_frame.pop_stack( | |
1209 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
1210 } else { | |
6605 | 1211 /* Unreachable? Would need a category2_1st on TOS after popping |
1212 * a long/double or two category 1's, which does not | |
1213 * appear possible. */ | |
1214 verify_error( | |
1215 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
1216 bad_type_msg, "dup2_x2"); | |
0 | 1217 return; |
1218 } | |
1219 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1220 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1221 current_frame.push_stack(type4, CHECK_VERIFY(this)); | |
1222 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
1223 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1224 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1225 no_control_flow = false; break; | |
1226 } | |
1227 case Bytecodes::_swap : | |
1228 type = current_frame.pop_stack( | |
1229 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1230 type2 = current_frame.pop_stack( | |
1231 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
1232 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1233 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
1234 no_control_flow = false; break; | |
1235 case Bytecodes::_iadd : | |
1236 case Bytecodes::_isub : | |
1237 case Bytecodes::_imul : | |
1238 case Bytecodes::_idiv : | |
1239 case Bytecodes::_irem : | |
1240 case Bytecodes::_ishl : | |
1241 case Bytecodes::_ishr : | |
1242 case Bytecodes::_iushr : | |
1243 case Bytecodes::_ior : | |
1244 case Bytecodes::_ixor : | |
1245 case Bytecodes::_iand : | |
1246 current_frame.pop_stack( | |
1247 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1248 // fall through | |
1249 case Bytecodes::_ineg : | |
1250 current_frame.pop_stack( | |
1251 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1252 current_frame.push_stack( | |
1253 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1254 no_control_flow = false; break; | |
1255 case Bytecodes::_ladd : | |
1256 case Bytecodes::_lsub : | |
1257 case Bytecodes::_lmul : | |
1258 case Bytecodes::_ldiv : | |
1259 case Bytecodes::_lrem : | |
1260 case Bytecodes::_land : | |
1261 case Bytecodes::_lor : | |
1262 case Bytecodes::_lxor : | |
1263 current_frame.pop_stack_2( | |
1264 VerificationType::long2_type(), | |
1265 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1266 // fall through | |
1267 case Bytecodes::_lneg : | |
1268 current_frame.pop_stack_2( | |
1269 VerificationType::long2_type(), | |
1270 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1271 current_frame.push_stack_2( | |
1272 VerificationType::long_type(), | |
1273 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1274 no_control_flow = false; break; | |
1275 case Bytecodes::_lshl : | |
1276 case Bytecodes::_lshr : | |
1277 case Bytecodes::_lushr : | |
1278 current_frame.pop_stack( | |
1279 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1280 current_frame.pop_stack_2( | |
1281 VerificationType::long2_type(), | |
1282 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1283 current_frame.push_stack_2( | |
1284 VerificationType::long_type(), | |
1285 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1286 no_control_flow = false; break; | |
1287 case Bytecodes::_fadd : | |
1288 case Bytecodes::_fsub : | |
1289 case Bytecodes::_fmul : | |
1290 case Bytecodes::_fdiv : | |
1291 case Bytecodes::_frem : | |
1292 current_frame.pop_stack( | |
1293 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1294 // fall through | |
1295 case Bytecodes::_fneg : | |
1296 current_frame.pop_stack( | |
1297 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1298 current_frame.push_stack( | |
1299 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1300 no_control_flow = false; break; | |
1301 case Bytecodes::_dadd : | |
1302 case Bytecodes::_dsub : | |
1303 case Bytecodes::_dmul : | |
1304 case Bytecodes::_ddiv : | |
1305 case Bytecodes::_drem : | |
1306 current_frame.pop_stack_2( | |
1307 VerificationType::double2_type(), | |
1308 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1309 // fall through | |
1310 case Bytecodes::_dneg : | |
1311 current_frame.pop_stack_2( | |
1312 VerificationType::double2_type(), | |
1313 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1314 current_frame.push_stack_2( | |
1315 VerificationType::double_type(), | |
1316 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
1317 no_control_flow = false; break; | |
1318 case Bytecodes::_iinc : | |
1319 verify_iinc(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
1320 no_control_flow = false; break; | |
1321 case Bytecodes::_i2l : | |
1322 type = current_frame.pop_stack( | |
1323 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1324 current_frame.push_stack_2( | |
1325 VerificationType::long_type(), | |
1326 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1327 no_control_flow = false; break; | |
1328 case Bytecodes::_l2i : | |
1329 current_frame.pop_stack_2( | |
1330 VerificationType::long2_type(), | |
1331 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1332 current_frame.push_stack( | |
1333 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1334 no_control_flow = false; break; | |
1335 case Bytecodes::_i2f : | |
1336 current_frame.pop_stack( | |
1337 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1338 current_frame.push_stack( | |
1339 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1340 no_control_flow = false; break; | |
1341 case Bytecodes::_i2d : | |
1342 current_frame.pop_stack( | |
1343 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1344 current_frame.push_stack_2( | |
1345 VerificationType::double_type(), | |
1346 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
1347 no_control_flow = false; break; | |
1348 case Bytecodes::_l2f : | |
1349 current_frame.pop_stack_2( | |
1350 VerificationType::long2_type(), | |
1351 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1352 current_frame.push_stack( | |
1353 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1354 no_control_flow = false; break; | |
1355 case Bytecodes::_l2d : | |
1356 current_frame.pop_stack_2( | |
1357 VerificationType::long2_type(), | |
1358 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1359 current_frame.push_stack_2( | |
1360 VerificationType::double_type(), | |
1361 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
1362 no_control_flow = false; break; | |
1363 case Bytecodes::_f2i : | |
1364 current_frame.pop_stack( | |
1365 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1366 current_frame.push_stack( | |
1367 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1368 no_control_flow = false; break; | |
1369 case Bytecodes::_f2l : | |
1370 current_frame.pop_stack( | |
1371 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1372 current_frame.push_stack_2( | |
1373 VerificationType::long_type(), | |
1374 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1375 no_control_flow = false; break; | |
1376 case Bytecodes::_f2d : | |
1377 current_frame.pop_stack( | |
1378 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1379 current_frame.push_stack_2( | |
1380 VerificationType::double_type(), | |
1381 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
1382 no_control_flow = false; break; | |
1383 case Bytecodes::_d2i : | |
1384 current_frame.pop_stack_2( | |
1385 VerificationType::double2_type(), | |
1386 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1387 current_frame.push_stack( | |
1388 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1389 no_control_flow = false; break; | |
1390 case Bytecodes::_d2l : | |
1391 current_frame.pop_stack_2( | |
1392 VerificationType::double2_type(), | |
1393 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1394 current_frame.push_stack_2( | |
1395 VerificationType::long_type(), | |
1396 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1397 no_control_flow = false; break; | |
1398 case Bytecodes::_d2f : | |
1399 current_frame.pop_stack_2( | |
1400 VerificationType::double2_type(), | |
1401 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1402 current_frame.push_stack( | |
1403 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1404 no_control_flow = false; break; | |
1405 case Bytecodes::_i2b : | |
1406 case Bytecodes::_i2c : | |
1407 case Bytecodes::_i2s : | |
1408 current_frame.pop_stack( | |
1409 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1410 current_frame.push_stack( | |
1411 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1412 no_control_flow = false; break; | |
1413 case Bytecodes::_lcmp : | |
1414 current_frame.pop_stack_2( | |
1415 VerificationType::long2_type(), | |
1416 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1417 current_frame.pop_stack_2( | |
1418 VerificationType::long2_type(), | |
1419 VerificationType::long_type(), CHECK_VERIFY(this)); | |
1420 current_frame.push_stack( | |
1421 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1422 no_control_flow = false; break; | |
1423 case Bytecodes::_fcmpl : | |
1424 case Bytecodes::_fcmpg : | |
1425 current_frame.pop_stack( | |
1426 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1427 current_frame.pop_stack( | |
1428 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1429 current_frame.push_stack( | |
1430 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1431 no_control_flow = false; break; | |
1432 case Bytecodes::_dcmpl : | |
1433 case Bytecodes::_dcmpg : | |
1434 current_frame.pop_stack_2( | |
1435 VerificationType::double2_type(), | |
1436 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1437 current_frame.pop_stack_2( | |
1438 VerificationType::double2_type(), | |
1439 VerificationType::double_type(), CHECK_VERIFY(this)); | |
1440 current_frame.push_stack( | |
1441 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1442 no_control_flow = false; break; | |
1443 case Bytecodes::_if_icmpeq: | |
1444 case Bytecodes::_if_icmpne: | |
1445 case Bytecodes::_if_icmplt: | |
1446 case Bytecodes::_if_icmpge: | |
1447 case Bytecodes::_if_icmpgt: | |
1448 case Bytecodes::_if_icmple: | |
1449 current_frame.pop_stack( | |
1450 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1451 // fall through | |
1452 case Bytecodes::_ifeq: | |
1453 case Bytecodes::_ifne: | |
1454 case Bytecodes::_iflt: | |
1455 case Bytecodes::_ifge: | |
1456 case Bytecodes::_ifgt: | |
1457 case Bytecodes::_ifle: | |
1458 current_frame.pop_stack( | |
1459 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1460 target = bcs.dest(); | |
1461 stackmap_table.check_jump_target( | |
1462 ¤t_frame, target, CHECK_VERIFY(this)); | |
1463 no_control_flow = false; break; | |
1464 case Bytecodes::_if_acmpeq : | |
1465 case Bytecodes::_if_acmpne : | |
1466 current_frame.pop_stack( | |
1467 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1468 // fall through | |
1469 case Bytecodes::_ifnull : | |
1470 case Bytecodes::_ifnonnull : | |
1471 current_frame.pop_stack( | |
1472 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1473 target = bcs.dest(); | |
1474 stackmap_table.check_jump_target | |
1475 (¤t_frame, target, CHECK_VERIFY(this)); | |
1476 no_control_flow = false; break; | |
1477 case Bytecodes::_goto : | |
1478 target = bcs.dest(); | |
1479 stackmap_table.check_jump_target( | |
1480 ¤t_frame, target, CHECK_VERIFY(this)); | |
1481 no_control_flow = true; break; | |
1482 case Bytecodes::_goto_w : | |
1483 target = bcs.dest_w(); | |
1484 stackmap_table.check_jump_target( | |
1485 ¤t_frame, target, CHECK_VERIFY(this)); | |
1486 no_control_flow = true; break; | |
1487 case Bytecodes::_tableswitch : | |
1488 case Bytecodes::_lookupswitch : | |
1489 verify_switch( | |
1490 &bcs, code_length, code_data, ¤t_frame, | |
1491 &stackmap_table, CHECK_VERIFY(this)); | |
1492 no_control_flow = true; break; | |
1493 case Bytecodes::_ireturn : | |
1494 type = current_frame.pop_stack( | |
1495 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
6605 | 1496 verify_return_value(return_type, type, bci, |
1497 ¤t_frame, CHECK_VERIFY(this)); | |
0 | 1498 no_control_flow = true; break; |
1499 case Bytecodes::_lreturn : | |
1500 type2 = current_frame.pop_stack( | |
1501 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1502 type = current_frame.pop_stack( | |
1503 VerificationType::long_type(), CHECK_VERIFY(this)); | |
6605 | 1504 verify_return_value(return_type, type, bci, |
1505 ¤t_frame, CHECK_VERIFY(this)); | |
0 | 1506 no_control_flow = true; break; |
1507 case Bytecodes::_freturn : | |
1508 type = current_frame.pop_stack( | |
1509 VerificationType::float_type(), CHECK_VERIFY(this)); | |
6605 | 1510 verify_return_value(return_type, type, bci, |
1511 ¤t_frame, CHECK_VERIFY(this)); | |
0 | 1512 no_control_flow = true; break; |
1513 case Bytecodes::_dreturn : | |
1514 type2 = current_frame.pop_stack( | |
1515 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
1516 type = current_frame.pop_stack( | |
1517 VerificationType::double_type(), CHECK_VERIFY(this)); | |
6605 | 1518 verify_return_value(return_type, type, bci, |
1519 ¤t_frame, CHECK_VERIFY(this)); | |
0 | 1520 no_control_flow = true; break; |
1521 case Bytecodes::_areturn : | |
1522 type = current_frame.pop_stack( | |
1523 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
6605 | 1524 verify_return_value(return_type, type, bci, |
1525 ¤t_frame, CHECK_VERIFY(this)); | |
0 | 1526 no_control_flow = true; break; |
1527 case Bytecodes::_return : | |
1528 if (return_type != VerificationType::bogus_type()) { | |
6605 | 1529 verify_error(ErrorContext::bad_code(bci), |
1530 "Method expects a return value"); | |
0 | 1531 return; |
1532 } | |
1533 // Make sure "this" has been initialized if current method is an | |
1534 // <init> | |
1535 if (_method->name() == vmSymbols::object_initializer_name() && | |
1536 current_frame.flag_this_uninit()) { | |
6605 | 1537 verify_error(ErrorContext::bad_code(bci), |
1538 "Constructor must call super() or this() " | |
1539 "before return"); | |
0 | 1540 return; |
1541 } | |
1542 no_control_flow = true; break; | |
1543 case Bytecodes::_getstatic : | |
1544 case Bytecodes::_putstatic : | |
1545 case Bytecodes::_getfield : | |
1546 case Bytecodes::_putfield : | |
1547 verify_field_instructions( | |
1548 &bcs, ¤t_frame, cp, CHECK_VERIFY(this)); | |
1549 no_control_flow = false; break; | |
1550 case Bytecodes::_invokevirtual : | |
1551 case Bytecodes::_invokespecial : | |
1552 case Bytecodes::_invokestatic : | |
1553 verify_invoke_instructions( | |
1554 &bcs, code_length, ¤t_frame, | |
1555 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
1556 no_control_flow = false; break; | |
1557 case Bytecodes::_invokeinterface : | |
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1558 case Bytecodes::_invokedynamic : |
0 | 1559 verify_invoke_instructions( |
1560 &bcs, code_length, ¤t_frame, | |
1561 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
1562 no_control_flow = false; break; | |
1563 case Bytecodes::_new : | |
1564 { | |
1565 | 1565 index = bcs.get_index_u2(); |
6605 | 1566 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
0 | 1567 VerificationType new_class_type = |
1568 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
1569 if (!new_class_type.is_object()) { | |
6605 | 1570 verify_error(ErrorContext::bad_type(bci, |
1571 TypeOrigin::cp(index, new_class_type)), | |
1572 "Illegal new instruction"); | |
0 | 1573 return; |
1574 } | |
1575 type = VerificationType::uninitialized_type(bci); | |
1576 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1577 no_control_flow = false; break; | |
1578 } | |
1579 case Bytecodes::_newarray : | |
1580 type = get_newarray_type(bcs.get_index(), bci, CHECK_VERIFY(this)); | |
1581 current_frame.pop_stack( | |
1582 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1583 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
1584 no_control_flow = false; break; | |
1585 case Bytecodes::_anewarray : | |
1586 verify_anewarray( | |
6605 | 1587 bci, bcs.get_index_u2(), cp, ¤t_frame, CHECK_VERIFY(this)); |
0 | 1588 no_control_flow = false; break; |
1589 case Bytecodes::_arraylength : | |
1590 type = current_frame.pop_stack( | |
1591 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
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1592 if (!(type.is_null() || type.is_array())) { |
6605 | 1593 verify_error(ErrorContext::bad_type( |
1594 bci, current_frame.stack_top_ctx()), | |
1595 bad_type_msg, "arraylength"); | |
0 | 1596 } |
1597 current_frame.push_stack( | |
1598 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1599 no_control_flow = false; break; | |
1600 case Bytecodes::_checkcast : | |
1601 { | |
1565 | 1602 index = bcs.get_index_u2(); |
6605 | 1603 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
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1604 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
0 | 1605 VerificationType klass_type = cp_index_to_type( |
1606 index, cp, CHECK_VERIFY(this)); | |
1607 current_frame.push_stack(klass_type, CHECK_VERIFY(this)); | |
1608 no_control_flow = false; break; | |
1609 } | |
1610 case Bytecodes::_instanceof : { | |
1565 | 1611 index = bcs.get_index_u2(); |
6605 | 1612 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
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1613 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
0 | 1614 current_frame.push_stack( |
1615 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1616 no_control_flow = false; break; | |
1617 } | |
1618 case Bytecodes::_monitorenter : | |
1619 case Bytecodes::_monitorexit : | |
1620 current_frame.pop_stack( | |
1621 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
1622 no_control_flow = false; break; | |
1623 case Bytecodes::_multianewarray : | |
1624 { | |
1565 | 1625 index = bcs.get_index_u2(); |
0 | 1626 u2 dim = *(bcs.bcp()+3); |
6605 | 1627 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
0 | 1628 VerificationType new_array_type = |
1629 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
1630 if (!new_array_type.is_array()) { | |
6605 | 1631 verify_error(ErrorContext::bad_type(bci, |
1632 TypeOrigin::cp(index, new_array_type)), | |
1633 "Illegal constant pool index in multianewarray instruction"); | |
0 | 1634 return; |
1635 } | |
1636 if (dim < 1 || new_array_type.dimensions() < dim) { | |
6605 | 1637 verify_error(ErrorContext::bad_code(bci), |
1638 "Illegal dimension in multianewarray instruction: %d", dim); | |
0 | 1639 return; |
1640 } | |
1641 for (int i = 0; i < dim; i++) { | |
1642 current_frame.pop_stack( | |
1643 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1644 } | |
1645 current_frame.push_stack(new_array_type, CHECK_VERIFY(this)); | |
1646 no_control_flow = false; break; | |
1647 } | |
1648 case Bytecodes::_athrow : | |
1649 type = VerificationType::reference_type( | |
1650 vmSymbols::java_lang_Throwable()); | |
1651 current_frame.pop_stack(type, CHECK_VERIFY(this)); | |
1652 no_control_flow = true; break; | |
1653 default: | |
1654 // We only need to check the valid bytecodes in class file. | |
1655 // And jsr and ret are not in the new class file format in JDK1.5. | |
6605 | 1656 verify_error(ErrorContext::bad_code(bci), |
1657 "Bad instruction: %02x", opcode); | |
0 | 1658 no_control_flow = false; |
1659 return; | |
1660 } // end switch | |
1661 } // end Merge with the next instruction | |
1662 | |
1663 // Look for possible jump target in exception handlers and see if it | |
1664 // matches current_frame | |
1665 if (bci >= ex_min && bci < ex_max) { | |
1666 verify_exception_handler_targets( | |
1667 bci, this_uninit, ¤t_frame, &stackmap_table, CHECK_VERIFY(this)); | |
1668 } | |
1669 } // end while | |
1670 | |
1671 // Make sure that control flow does not fall through end of the method | |
1672 if (!no_control_flow) { | |
6605 | 1673 verify_error(ErrorContext::bad_code(code_length), |
1674 "Control flow falls through code end"); | |
0 | 1675 return; |
1676 } | |
1677 } | |
1678 | |
1679 char* ClassVerifier::generate_code_data(methodHandle m, u4 code_length, TRAPS) { | |
1680 char* code_data = NEW_RESOURCE_ARRAY(char, code_length); | |
1681 memset(code_data, 0, sizeof(char) * code_length); | |
1682 RawBytecodeStream bcs(m); | |
1683 | |
1684 while (!bcs.is_last_bytecode()) { | |
1685 if (bcs.raw_next() != Bytecodes::_illegal) { | |
1686 int bci = bcs.bci(); | |
1565 | 1687 if (bcs.raw_code() == Bytecodes::_new) { |
0 | 1688 code_data[bci] = NEW_OFFSET; |
1689 } else { | |
1690 code_data[bci] = BYTECODE_OFFSET; | |
1691 } | |
1692 } else { | |
6605 | 1693 verify_error(ErrorContext::bad_code(bcs.bci()), "Bad instruction"); |
0 | 1694 return NULL; |
1695 } | |
1696 } | |
1697 | |
1698 return code_data; | |
1699 } | |
1700 | |
1701 void ClassVerifier::verify_exception_handler_table(u4 code_length, char* code_data, int& min, int& max, TRAPS) { | |
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1702 ExceptionTable exhandlers(_method()); |
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1703 int exlength = exhandlers.length(); |
0 | 1704 constantPoolHandle cp (THREAD, _method->constants()); |
1705 | |
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1706 for(int i = 0; i < exlength; i++) { |
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1707 //reacquire the table in case a GC happened |
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1708 ExceptionTable exhandlers(_method()); |
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1709 u2 start_pc = exhandlers.start_pc(i); |
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1710 u2 end_pc = exhandlers.end_pc(i); |
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1711 u2 handler_pc = exhandlers.handler_pc(i); |
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1712 if (start_pc >= code_length || code_data[start_pc] == 0) { |
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1713 class_format_error("Illegal exception table start_pc %d", start_pc); |
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1714 return; |
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1715 } |
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1716 if (end_pc != code_length) { // special case: end_pc == code_length |
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1717 if (end_pc > code_length || code_data[end_pc] == 0) { |
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1718 class_format_error("Illegal exception table end_pc %d", end_pc); |
0 | 1719 return; |
1720 } | |
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1721 } |
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1722 if (handler_pc >= code_length || code_data[handler_pc] == 0) { |
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1723 class_format_error("Illegal exception table handler_pc %d", handler_pc); |
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1724 return; |
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|
1725 } |
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1726 int catch_type_index = exhandlers.catch_type_index(i); |
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1727 if (catch_type_index != 0) { |
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1728 VerificationType catch_type = cp_index_to_type( |
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1729 catch_type_index, cp, CHECK_VERIFY(this)); |
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1730 VerificationType throwable = |
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1731 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
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1732 bool is_subclass = throwable.is_assignable_from( |
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1733 catch_type, this, CHECK_VERIFY(this)); |
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1734 if (!is_subclass) { |
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1735 // 4286534: should throw VerifyError according to recent spec change |
6605 | 1736 verify_error(ErrorContext::bad_type(handler_pc, |
1737 TypeOrigin::cp(catch_type_index, catch_type), | |
1738 TypeOrigin::implicit(throwable)), | |
1739 "Catch type is not a subclass " | |
1740 "of Throwable in exception handler %d", handler_pc); | |
0 | 1741 return; |
1742 } | |
1743 } | |
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1744 if (start_pc < min) min = start_pc; |
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1745 if (end_pc > max) max = end_pc; |
0 | 1746 } |
1747 } | |
1748 | |
1749 void ClassVerifier::verify_local_variable_table(u4 code_length, char* code_data, TRAPS) { | |
1750 int localvariable_table_length = _method()->localvariable_table_length(); | |
1751 if (localvariable_table_length > 0) { | |
1752 LocalVariableTableElement* table = _method()->localvariable_table_start(); | |
1753 for (int i = 0; i < localvariable_table_length; i++) { | |
1754 u2 start_bci = table[i].start_bci; | |
1755 u2 length = table[i].length; | |
1756 | |
1757 if (start_bci >= code_length || code_data[start_bci] == 0) { | |
1758 class_format_error( | |
1759 "Illegal local variable table start_pc %d", start_bci); | |
1760 return; | |
1761 } | |
1762 u4 end_bci = (u4)(start_bci + length); | |
1763 if (end_bci != code_length) { | |
1764 if (end_bci >= code_length || code_data[end_bci] == 0) { | |
1765 class_format_error( "Illegal local variable table length %d", length); | |
1766 return; | |
1767 } | |
1768 } | |
1769 } | |
1770 } | |
1771 } | |
1772 | |
1773 u2 ClassVerifier::verify_stackmap_table(u2 stackmap_index, u2 bci, | |
1774 StackMapFrame* current_frame, | |
1775 StackMapTable* stackmap_table, | |
1776 bool no_control_flow, TRAPS) { | |
1777 if (stackmap_index < stackmap_table->get_frame_count()) { | |
1778 u2 this_offset = stackmap_table->get_offset(stackmap_index); | |
1779 if (no_control_flow && this_offset > bci) { | |
6605 | 1780 verify_error(ErrorContext::missing_stackmap(bci), |
1781 "Expecting a stack map frame"); | |
0 | 1782 return 0; |
1783 } | |
1784 if (this_offset == bci) { | |
6605 | 1785 ErrorContext ctx; |
0 | 1786 // See if current stack map can be assigned to the frame in table. |
1787 // current_frame is the stackmap frame got from the last instruction. | |
1788 // If matched, current_frame will be updated by this method. | |
6605 | 1789 bool matches = stackmap_table->match_stackmap( |
0 | 1790 current_frame, this_offset, stackmap_index, |
6605 | 1791 !no_control_flow, true, &ctx, CHECK_VERIFY_(this, 0)); |
1792 if (!matches) { | |
0 | 1793 // report type error |
6605 | 1794 verify_error(ctx, "Instruction type does not match stack map"); |
0 | 1795 return 0; |
1796 } | |
1797 stackmap_index++; | |
1798 } else if (this_offset < bci) { | |
1799 // current_offset should have met this_offset. | |
1800 class_format_error("Bad stack map offset %d", this_offset); | |
1801 return 0; | |
1802 } | |
1803 } else if (no_control_flow) { | |
6605 | 1804 verify_error(ErrorContext::bad_code(bci), "Expecting a stack map frame"); |
0 | 1805 return 0; |
1806 } | |
1807 return stackmap_index; | |
1808 } | |
1809 | |
1810 void ClassVerifier::verify_exception_handler_targets(u2 bci, bool this_uninit, StackMapFrame* current_frame, | |
1811 StackMapTable* stackmap_table, TRAPS) { | |
1812 constantPoolHandle cp (THREAD, _method->constants()); | |
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1813 ExceptionTable exhandlers(_method()); |
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1814 int exlength = exhandlers.length(); |
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1815 for(int i = 0; i < exlength; i++) { |
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1816 //reacquire the table in case a GC happened |
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1817 ExceptionTable exhandlers(_method()); |
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1818 u2 start_pc = exhandlers.start_pc(i); |
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1819 u2 end_pc = exhandlers.end_pc(i); |
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1820 u2 handler_pc = exhandlers.handler_pc(i); |
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1821 int catch_type_index = exhandlers.catch_type_index(i); |
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1822 if(bci >= start_pc && bci < end_pc) { |
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1823 u1 flags = current_frame->flags(); |
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1824 if (this_uninit) { flags |= FLAG_THIS_UNINIT; } |
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1825 StackMapFrame* new_frame = current_frame->frame_in_exception_handler(flags); |
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1826 if (catch_type_index != 0) { |
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1827 // We know that this index refers to a subclass of Throwable |
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1828 VerificationType catch_type = cp_index_to_type( |
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1829 catch_type_index, cp, CHECK_VERIFY(this)); |
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1830 new_frame->push_stack(catch_type, CHECK_VERIFY(this)); |
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1831 } else { |
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1832 VerificationType throwable = |
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1833 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
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1834 new_frame->push_stack(throwable, CHECK_VERIFY(this)); |
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1835 } |
6605 | 1836 ErrorContext ctx; |
1837 bool matches = stackmap_table->match_stackmap( | |
1838 new_frame, handler_pc, true, false, &ctx, CHECK_VERIFY(this)); | |
1839 if (!matches) { | |
1840 verify_error(ctx, "Stack map does not match the one at " | |
1841 "exception handler %d", handler_pc); | |
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1842 return; |
0 | 1843 } |
1844 } | |
1845 } | |
1846 } | |
1847 | |
6605 | 1848 void ClassVerifier::verify_cp_index( |
1849 u2 bci, constantPoolHandle cp, int index, TRAPS) { | |
0 | 1850 int nconstants = cp->length(); |
1851 if ((index <= 0) || (index >= nconstants)) { | |
6605 | 1852 verify_error(ErrorContext::bad_cp_index(bci, index), |
1853 "Illegal constant pool index %d in class %s", | |
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1854 index, cp->pool_holder()->external_name()); |
0 | 1855 return; |
1856 } | |
1857 } | |
1858 | |
1859 void ClassVerifier::verify_cp_type( | |
6605 | 1860 u2 bci, int index, constantPoolHandle cp, unsigned int types, TRAPS) { |
0 | 1861 |
1862 // In some situations, bytecode rewriting may occur while we're verifying. | |
1863 // In this case, a constant pool cache exists and some indices refer to that | |
1570 | 1864 // instead. Be sure we don't pick up such indices by accident. |
1865 // We must check was_recursively_verified() before we get here. | |
1866 guarantee(cp->cache() == NULL, "not rewritten yet"); | |
0 | 1867 |
6605 | 1868 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); |
0 | 1869 unsigned int tag = cp->tag_at(index).value(); |
1870 if ((types & (1 << tag)) == 0) { | |
6605 | 1871 verify_error(ErrorContext::bad_cp_index(bci, index), |
0 | 1872 "Illegal type at constant pool entry %d in class %s", |
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1873 index, cp->pool_holder()->external_name()); |
0 | 1874 return; |
1875 } | |
1876 } | |
1877 | |
1878 void ClassVerifier::verify_cp_class_type( | |
6605 | 1879 u2 bci, int index, constantPoolHandle cp, TRAPS) { |
1880 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); | |
0 | 1881 constantTag tag = cp->tag_at(index); |
1882 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
6605 | 1883 verify_error(ErrorContext::bad_cp_index(bci, index), |
1884 "Illegal type at constant pool entry %d in class %s", | |
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1885 index, cp->pool_holder()->external_name()); |
0 | 1886 return; |
1887 } | |
1888 } | |
1889 | |
6605 | 1890 void ClassVerifier::verify_error(ErrorContext ctx, const char* msg, ...) { |
1891 stringStream ss; | |
0 | 1892 |
6605 | 1893 ctx.reset_frames(); |
0 | 1894 _exception_type = vmSymbols::java_lang_VerifyError(); |
6605 | 1895 _error_context = ctx; |
0 | 1896 va_list va; |
6605 | 1897 va_start(va, msg); |
1898 ss.vprint(msg, va); | |
0 | 1899 va_end(va); |
6605 | 1900 _message = ss.as_string(); |
1901 #ifdef ASSERT | |
1902 ResourceMark rm; | |
1903 const char* exception_name = _exception_type->as_C_string(); | |
1904 Exceptions::debug_check_abort(exception_name, NULL); | |
1905 #endif // ndef ASSERT | |
0 | 1906 } |
1907 | |
1908 void ClassVerifier::class_format_error(const char* msg, ...) { | |
6605 | 1909 stringStream ss; |
0 | 1910 _exception_type = vmSymbols::java_lang_ClassFormatError(); |
1911 va_list va; | |
1912 va_start(va, msg); | |
6605 | 1913 ss.vprint(msg, va); |
0 | 1914 va_end(va); |
6605 | 1915 if (!_method.is_null()) { |
1916 ss.print(" in method %s", _method->name_and_sig_as_C_string()); | |
1917 } | |
1918 _message = ss.as_string(); | |
0 | 1919 } |
1920 | |
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1921 Klass* ClassVerifier::load_class(Symbol* name, TRAPS) { |
0 | 1922 // Get current loader and protection domain first. |
1923 oop loader = current_class()->class_loader(); | |
1924 oop protection_domain = current_class()->protection_domain(); | |
1925 | |
1926 return SystemDictionary::resolve_or_fail( | |
1927 name, Handle(THREAD, loader), Handle(THREAD, protection_domain), | |
1928 true, CHECK_NULL); | |
1929 } | |
1930 | |
1931 bool ClassVerifier::is_protected_access(instanceKlassHandle this_class, | |
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1932 Klass* target_class, |
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1933 Symbol* field_name, |
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1934 Symbol* field_sig, |
0 | 1935 bool is_method) { |
1936 No_Safepoint_Verifier nosafepoint; | |
1937 | |
1938 // If target class isn't a super class of this class, we don't worry about this case | |
1939 if (!this_class->is_subclass_of(target_class)) { | |
1940 return false; | |
1941 } | |
1942 // Check if the specified method or field is protected | |
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1943 InstanceKlass* target_instance = InstanceKlass::cast(target_class); |
0 | 1944 fieldDescriptor fd; |
1945 if (is_method) { | |
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1946 Method* m = target_instance->uncached_lookup_method(field_name, field_sig); |
0 | 1947 if (m != NULL && m->is_protected()) { |
1948 if (!this_class->is_same_class_package(m->method_holder())) { | |
1949 return true; | |
1950 } | |
1951 } | |
1952 } else { | |
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1953 Klass* member_klass = target_instance->find_field(field_name, field_sig, &fd); |
6605 | 1954 if (member_klass != NULL && fd.is_protected()) { |
0 | 1955 if (!this_class->is_same_class_package(member_klass)) { |
1956 return true; | |
1957 } | |
1958 } | |
1959 } | |
1960 return false; | |
1961 } | |
1962 | |
1963 void ClassVerifier::verify_ldc( | |
6605 | 1964 int opcode, u2 index, StackMapFrame* current_frame, |
1965 constantPoolHandle cp, u2 bci, TRAPS) { | |
1966 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); | |
0 | 1967 constantTag tag = cp->tag_at(index); |
1968 unsigned int types; | |
1969 if (opcode == Bytecodes::_ldc || opcode == Bytecodes::_ldc_w) { | |
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1970 if (!tag.is_unresolved_klass()) { |
0 | 1971 types = (1 << JVM_CONSTANT_Integer) | (1 << JVM_CONSTANT_Float) |
1602 | 1972 | (1 << JVM_CONSTANT_String) | (1 << JVM_CONSTANT_Class) |
1973 | (1 << JVM_CONSTANT_MethodHandle) | (1 << JVM_CONSTANT_MethodType); | |
1974 // Note: The class file parser already verified the legality of | |
1975 // MethodHandle and MethodType constants. | |
6605 | 1976 verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
0 | 1977 } |
1978 } else { | |
1979 assert(opcode == Bytecodes::_ldc2_w, "must be ldc2_w"); | |
1980 types = (1 << JVM_CONSTANT_Double) | (1 << JVM_CONSTANT_Long); | |
6605 | 1981 verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
0 | 1982 } |
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1983 if (tag.is_string() && cp->is_pseudo_string_at(index)) { |
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1984 current_frame->push_stack(object_type(), CHECK_VERIFY(this)); |
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1985 } else if (tag.is_string()) { |
0 | 1986 current_frame->push_stack( |
1987 VerificationType::reference_type( | |
1988 vmSymbols::java_lang_String()), CHECK_VERIFY(this)); | |
1989 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
1990 current_frame->push_stack( | |
1991 VerificationType::reference_type( | |
1992 vmSymbols::java_lang_Class()), CHECK_VERIFY(this)); | |
1993 } else if (tag.is_int()) { | |
1994 current_frame->push_stack( | |
1995 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1996 } else if (tag.is_float()) { | |
1997 current_frame->push_stack( | |
1998 VerificationType::float_type(), CHECK_VERIFY(this)); | |
1999 } else if (tag.is_double()) { | |
2000 current_frame->push_stack_2( | |
2001 VerificationType::double_type(), | |
2002 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
2003 } else if (tag.is_long()) { | |
2004 current_frame->push_stack_2( | |
2005 VerificationType::long_type(), | |
2006 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
1602 | 2007 } else if (tag.is_method_handle()) { |
2008 current_frame->push_stack( | |
2009 VerificationType::reference_type( | |
2460 | 2010 vmSymbols::java_lang_invoke_MethodHandle()), CHECK_VERIFY(this)); |
1602 | 2011 } else if (tag.is_method_type()) { |
2012 current_frame->push_stack( | |
2013 VerificationType::reference_type( | |
2460 | 2014 vmSymbols::java_lang_invoke_MethodType()), CHECK_VERIFY(this)); |
0 | 2015 } else { |
6605 | 2016 /* Unreachable? verify_cp_type has already validated the cp type. */ |
2017 verify_error( | |
2018 ErrorContext::bad_cp_index(bci, index), "Invalid index in ldc"); | |
0 | 2019 return; |
2020 } | |
2021 } | |
2022 | |
2023 void ClassVerifier::verify_switch( | |
2024 RawBytecodeStream* bcs, u4 code_length, char* code_data, | |
2025 StackMapFrame* current_frame, StackMapTable* stackmap_table, TRAPS) { | |
2026 int bci = bcs->bci(); | |
2027 address bcp = bcs->bcp(); | |
2028 address aligned_bcp = (address) round_to((intptr_t)(bcp + 1), jintSize); | |
2029 | |
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2030 if (_klass->major_version() < NONZERO_PADDING_BYTES_IN_SWITCH_MAJOR_VERSION) { |
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2031 // 4639449 & 4647081: padding bytes must be 0 |
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2032 u2 padding_offset = 1; |
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2033 while ((bcp + padding_offset) < aligned_bcp) { |
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2034 if(*(bcp + padding_offset) != 0) { |
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2035 verify_error(ErrorContext::bad_code(bci), |
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2036 "Nonzero padding byte in lookswitch or tableswitch"); |
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2037 return; |
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2038 } |
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2039 padding_offset++; |
0 | 2040 } |
2041 } | |
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|
2042 |
0 | 2043 int default_offset = (int) Bytes::get_Java_u4(aligned_bcp); |
2044 int keys, delta; | |
2045 current_frame->pop_stack( | |
2046 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
1565 | 2047 if (bcs->raw_code() == Bytecodes::_tableswitch) { |
0 | 2048 jint low = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize); |
2049 jint high = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize); | |
2050 if (low > high) { | |
6605 | 2051 verify_error(ErrorContext::bad_code(bci), |
2052 "low must be less than or equal to high in tableswitch"); | |
0 | 2053 return; |
2054 } | |
2055 keys = high - low + 1; | |
2056 if (keys < 0) { | |
6605 | 2057 verify_error(ErrorContext::bad_code(bci), "too many keys in tableswitch"); |
0 | 2058 return; |
2059 } | |
2060 delta = 1; | |
2061 } else { | |
2062 keys = (int)Bytes::get_Java_u4(aligned_bcp + jintSize); | |
2063 if (keys < 0) { | |
6605 | 2064 verify_error(ErrorContext::bad_code(bci), |
2065 "number of keys in lookupswitch less than 0"); | |
0 | 2066 return; |
2067 } | |
2068 delta = 2; | |
2069 // Make sure that the lookupswitch items are sorted | |
2070 for (int i = 0; i < (keys - 1); i++) { | |
2071 jint this_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i)*jintSize); | |
2072 jint next_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i+2)*jintSize); | |
2073 if (this_key >= next_key) { | |
6605 | 2074 verify_error(ErrorContext::bad_code(bci), |
2075 "Bad lookupswitch instruction"); | |
0 | 2076 return; |
2077 } | |
2078 } | |
2079 } | |
2080 int target = bci + default_offset; | |
2081 stackmap_table->check_jump_target(current_frame, target, CHECK_VERIFY(this)); | |
2082 for (int i = 0; i < keys; i++) { | |
6118 | 2083 // Because check_jump_target() may safepoint, the bytecode could have |
2084 // moved, which means 'aligned_bcp' is no good and needs to be recalculated. | |
2085 aligned_bcp = (address)round_to((intptr_t)(bcs->bcp() + 1), jintSize); | |
0 | 2086 target = bci + (jint)Bytes::get_Java_u4(aligned_bcp+(3+i*delta)*jintSize); |
2087 stackmap_table->check_jump_target( | |
2088 current_frame, target, CHECK_VERIFY(this)); | |
2089 } | |
6118 | 2090 NOT_PRODUCT(aligned_bcp = NULL); // no longer valid at this point |
0 | 2091 } |
2092 | |
2093 bool ClassVerifier::name_in_supers( | |
2177
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2094 Symbol* ref_name, instanceKlassHandle current) { |
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2095 Klass* super = current->super(); |
0 | 2096 while (super != NULL) { |
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2097 if (super->name() == ref_name) { |
0 | 2098 return true; |
2099 } | |
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2100 super = super->super(); |
0 | 2101 } |
2102 return false; | |
2103 } | |
2104 | |
2105 void ClassVerifier::verify_field_instructions(RawBytecodeStream* bcs, | |
2106 StackMapFrame* current_frame, | |
2107 constantPoolHandle cp, | |
2108 TRAPS) { | |
1565 | 2109 u2 index = bcs->get_index_u2(); |
6605 | 2110 verify_cp_type(bcs->bci(), index, cp, |
2111 1 << JVM_CONSTANT_Fieldref, CHECK_VERIFY(this)); | |
0 | 2112 |
2113 // Get field name and signature | |
2177
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2114 Symbol* field_name = cp->name_ref_at(index); |
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2115 Symbol* field_sig = cp->signature_ref_at(index); |
0 | 2116 |
2117 if (!SignatureVerifier::is_valid_type_signature(field_sig)) { | |
2118 class_format_error( | |
2119 "Invalid signature for field in class %s referenced " | |
2120 "from constant pool index %d", _klass->external_name(), index); | |
2121 return; | |
2122 } | |
2123 | |
2124 // Get referenced class type | |
2125 VerificationType ref_class_type = cp_ref_index_to_type( | |
2126 index, cp, CHECK_VERIFY(this)); | |
2127 if (!ref_class_type.is_object()) { | |
6605 | 2128 /* Unreachable? Class file parser verifies Fieldref contents */ |
2129 verify_error(ErrorContext::bad_type(bcs->bci(), | |
2130 TypeOrigin::cp(index, ref_class_type)), | |
2131 "Expecting reference to class in class %s at constant pool index %d", | |
2132 _klass->external_name(), index); | |
0 | 2133 return; |
2134 } | |
2135 VerificationType target_class_type = ref_class_type; | |
2136 | |
2137 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
2138 "buffer type must match VerificationType size"); | |
2139 uintptr_t field_type_buffer[2]; | |
2140 VerificationType* field_type = (VerificationType*)field_type_buffer; | |
2141 // If we make a VerificationType[2] array directly, the compiler calls | |
2142 // to the c-runtime library to do the allocation instead of just | |
2143 // stack allocating it. Plus it would run constructors. This shows up | |
2144 // in performance profiles. | |
2145 | |
2146 SignatureStream sig_stream(field_sig, false); | |
2147 VerificationType stack_object_type; | |
2148 int n = change_sig_to_verificationType( | |
2149 &sig_stream, field_type, CHECK_VERIFY(this)); | |
2150 u2 bci = bcs->bci(); | |
2151 bool is_assignable; | |
1565 | 2152 switch (bcs->raw_code()) { |
0 | 2153 case Bytecodes::_getstatic: { |
2154 for (int i = 0; i < n; i++) { | |
2155 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
2156 } | |
2157 break; | |
2158 } | |
2159 case Bytecodes::_putstatic: { | |
2160 for (int i = n - 1; i >= 0; i--) { | |
2161 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
2162 } | |
2163 break; | |
2164 } | |
2165 case Bytecodes::_getfield: { | |
2166 stack_object_type = current_frame->pop_stack( | |
2167 target_class_type, CHECK_VERIFY(this)); | |
2168 for (int i = 0; i < n; i++) { | |
2169 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
2170 } | |
2171 goto check_protected; | |
2172 } | |
2173 case Bytecodes::_putfield: { | |
2174 for (int i = n - 1; i >= 0; i--) { | |
2175 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
2176 } | |
2177 stack_object_type = current_frame->pop_stack(CHECK_VERIFY(this)); | |
2178 | |
2179 // The JVMS 2nd edition allows field initialization before the superclass | |
2180 // initializer, if the field is defined within the current class. | |
2181 fieldDescriptor fd; | |
2182 if (stack_object_type == VerificationType::uninitialized_this_type() && | |
2183 target_class_type.equals(current_type()) && | |
2177
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2184 _klass->find_local_field(field_name, field_sig, &fd)) { |
0 | 2185 stack_object_type = current_type(); |
2186 } | |
2187 is_assignable = target_class_type.is_assignable_from( | |
2177
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2188 stack_object_type, this, CHECK_VERIFY(this)); |
0 | 2189 if (!is_assignable) { |
6605 | 2190 verify_error(ErrorContext::bad_type(bci, |
2191 current_frame->stack_top_ctx(), | |
2192 TypeOrigin::cp(index, target_class_type)), | |
2193 "Bad type on operand stack in putfield"); | |
0 | 2194 return; |
2195 } | |
2196 } | |
2197 check_protected: { | |
2198 if (_this_type == stack_object_type) | |
2199 break; // stack_object_type must be assignable to _current_class_type | |
2177
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|
2200 Symbol* ref_class_name = |
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|
2201 cp->klass_name_at(cp->klass_ref_index_at(index)); |
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diff
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|
2202 if (!name_in_supers(ref_class_name, current_class())) |
0 | 2203 // stack_object_type must be assignable to _current_class_type since: |
2204 // 1. stack_object_type must be assignable to ref_class. | |
2205 // 2. ref_class must be _current_class or a subclass of it. It can't | |
2206 // be a superclass of it. See revised JVMS 5.4.4. | |
2207 break; | |
2208 | |
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|
2209 Klass* ref_class_oop = load_class(ref_class_name, CHECK); |
2177
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diff
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|
2210 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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|
2211 field_sig, false)) { |
0 | 2212 // It's protected access, check if stack object is assignable to |
2213 // current class. | |
2214 is_assignable = current_type().is_assignable_from( | |
2177
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|
2215 stack_object_type, this, CHECK_VERIFY(this)); |
0 | 2216 if (!is_assignable) { |
6605 | 2217 verify_error(ErrorContext::bad_type(bci, |
2218 current_frame->stack_top_ctx(), | |
2219 TypeOrigin::implicit(current_type())), | |
2220 "Bad access to protected data in getfield"); | |
0 | 2221 return; |
2222 } | |
2223 } | |
2224 break; | |
2225 } | |
2226 default: ShouldNotReachHere(); | |
2227 } | |
2228 } | |
2229 | |
2230 void ClassVerifier::verify_invoke_init( | |
6605 | 2231 RawBytecodeStream* bcs, u2 ref_class_index, VerificationType ref_class_type, |
0 | 2232 StackMapFrame* current_frame, u4 code_length, bool *this_uninit, |
2233 constantPoolHandle cp, TRAPS) { | |
2234 u2 bci = bcs->bci(); | |
2235 VerificationType type = current_frame->pop_stack( | |
2236 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
2237 if (type == VerificationType::uninitialized_this_type()) { | |
6155 | 2238 // The method must be an <init> method of this class or its superclass |
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|
2239 Klass* superk = current_class()->super(); |
1677 | 2240 if (ref_class_type.name() != current_class()->name() && |
6725
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|
2241 ref_class_type.name() != superk->name()) { |
6605 | 2242 verify_error(ErrorContext::bad_type(bci, |
2243 TypeOrigin::implicit(ref_class_type), | |
2244 TypeOrigin::implicit(current_type())), | |
2245 "Bad <init> method call"); | |
0 | 2246 return; |
2247 } | |
2248 current_frame->initialize_object(type, current_type()); | |
2249 *this_uninit = true; | |
2250 } else if (type.is_uninitialized()) { | |
2251 u2 new_offset = type.bci(); | |
2252 address new_bcp = bcs->bcp() - bci + new_offset; | |
2253 if (new_offset > (code_length - 3) || (*new_bcp) != Bytecodes::_new) { | |
6605 | 2254 /* Unreachable? Stack map parsing ensures valid type and new |
2255 * instructions have a valid BCI. */ | |
2256 verify_error(ErrorContext::bad_code(new_offset), | |
2257 "Expecting new instruction"); | |
0 | 2258 return; |
2259 } | |
2260 u2 new_class_index = Bytes::get_Java_u2(new_bcp + 1); | |
6605 | 2261 verify_cp_class_type(bci, new_class_index, cp, CHECK_VERIFY(this)); |
0 | 2262 |
2263 // The method must be an <init> method of the indicated class | |
2264 VerificationType new_class_type = cp_index_to_type( | |
2265 new_class_index, cp, CHECK_VERIFY(this)); | |
2266 if (!new_class_type.equals(ref_class_type)) { | |
6605 | 2267 verify_error(ErrorContext::bad_type(bci, |
2268 TypeOrigin::cp(new_class_index, new_class_type), | |
2269 TypeOrigin::cp(ref_class_index, ref_class_type)), | |
2270 "Call to wrong <init> method"); | |
0 | 2271 return; |
2272 } | |
2273 // According to the VM spec, if the referent class is a superclass of the | |
2274 // current class, and is in a different runtime package, and the method is | |
2275 // protected, then the objectref must be the current class or a subclass | |
2276 // of the current class. | |
2277 VerificationType objectref_type = new_class_type; | |
2278 if (name_in_supers(ref_class_type.name(), current_class())) { | |
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|
2279 Klass* ref_klass = load_class( |
0 | 2280 ref_class_type.name(), CHECK_VERIFY(this)); |
6725
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changeset
|
2281 Method* m = InstanceKlass::cast(ref_klass)->uncached_lookup_method( |
0 | 2282 vmSymbols::object_initializer_name(), |
1565 | 2283 cp->signature_ref_at(bcs->get_index_u2())); |
0 | 2284 instanceKlassHandle mh(THREAD, m->method_holder()); |
2285 if (m->is_protected() && !mh->is_same_class_package(_klass())) { | |
2286 bool assignable = current_type().is_assignable_from( | |
2177
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|
2287 objectref_type, this, CHECK_VERIFY(this)); |
0 | 2288 if (!assignable) { |
6605 | 2289 verify_error(ErrorContext::bad_type(bci, |
2290 TypeOrigin::cp(new_class_index, objectref_type), | |
2291 TypeOrigin::implicit(current_type())), | |
2292 "Bad access to protected <init> method"); | |
0 | 2293 return; |
2294 } | |
2295 } | |
2296 } | |
2297 current_frame->initialize_object(type, new_class_type); | |
2298 } else { | |
6605 | 2299 verify_error(ErrorContext::bad_type(bci, current_frame->stack_top_ctx()), |
2300 "Bad operand type when invoking <init>"); | |
0 | 2301 return; |
2302 } | |
2303 } | |
2304 | |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
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|
2305 bool ClassVerifier::is_same_or_direct_interface( |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
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|
2306 instanceKlassHandle klass, |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
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|
2307 VerificationType klass_type, |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
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diff
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|
2308 VerificationType ref_class_type) { |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2309 if (ref_class_type.equals(klass_type)) return true; |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2310 Array<Klass*>* local_interfaces = klass->local_interfaces(); |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2311 if (local_interfaces != NULL) { |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2312 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
|
2313 Klass* k = local_interfaces->at(x); |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2314 assert (k != NULL && k->is_interface(), "invalid interface"); |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
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13385
diff
changeset
|
2315 if (ref_class_type.equals(VerificationType::reference_type(k->name()))) { |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2316 return true; |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2317 } |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2318 } |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2319 } |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2320 return false; |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
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13385
diff
changeset
|
2321 } |
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|
2322 |
0 | 2323 void ClassVerifier::verify_invoke_instructions( |
2324 RawBytecodeStream* bcs, u4 code_length, StackMapFrame* current_frame, | |
2325 bool *this_uninit, VerificationType return_type, | |
2326 constantPoolHandle cp, TRAPS) { | |
2327 // Make sure the constant pool item is the right type | |
1565 | 2328 u2 index = bcs->get_index_u2(); |
2329 Bytecodes::Code opcode = bcs->raw_code(); | |
6934 | 2330 unsigned int types; |
2331 switch (opcode) { | |
2332 case Bytecodes::_invokeinterface: | |
2333 types = 1 << JVM_CONSTANT_InterfaceMethodref; | |
2334 break; | |
2335 case Bytecodes::_invokedynamic: | |
2336 types = 1 << JVM_CONSTANT_InvokeDynamic; | |
2337 break; | |
2338 case Bytecodes::_invokespecial: | |
9066
09b0d3e9ba6c
8011671: JCK tests on static interface methods fail under b84: Illegal type at constant pool entry 5
bharadwaj
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8819
diff
changeset
|
2339 case Bytecodes::_invokestatic: |
09b0d3e9ba6c
8011671: JCK tests on static interface methods fail under b84: Illegal type at constant pool entry 5
bharadwaj
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8819
diff
changeset
|
2340 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
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8819
diff
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|
2341 (1 << JVM_CONSTANT_Methodref) : |
09b0d3e9ba6c
8011671: JCK tests on static interface methods fail under b84: Illegal type at constant pool entry 5
bharadwaj
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8819
diff
changeset
|
2342 ((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
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8819
diff
changeset
|
2343 break; |
6934 | 2344 default: |
2345 types = 1 << JVM_CONSTANT_Methodref; | |
2346 } | |
6605 | 2347 verify_cp_type(bcs->bci(), index, cp, types, CHECK_VERIFY(this)); |
0 | 2348 |
2349 // Get method name and signature | |
2177
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diff
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2350 Symbol* method_name = cp->name_ref_at(index); |
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diff
changeset
|
2351 Symbol* method_sig = cp->signature_ref_at(index); |
0 | 2352 |
2353 if (!SignatureVerifier::is_valid_method_signature(method_sig)) { | |
2354 class_format_error( | |
2355 "Invalid method signature in class %s referenced " | |
2356 "from constant pool index %d", _klass->external_name(), index); | |
2357 return; | |
2358 } | |
2359 | |
2360 // Get referenced class type | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2361 VerificationType ref_class_type; |
be93aad57795
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jrose
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431
diff
changeset
|
2362 if (opcode == Bytecodes::_invokedynamic) { |
1602 | 2363 if (!EnableInvokeDynamic || |
2364 _klass->major_version() < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { | |
726
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6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2365 class_format_error( |
1602 | 2366 (!EnableInvokeDynamic ? |
2367 "invokedynamic instructions not enabled in this JVM" : | |
2368 "invokedynamic instructions not supported by this class file version"), | |
726
be93aad57795
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jrose
parents:
431
diff
changeset
|
2369 _klass->external_name()); |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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431
diff
changeset
|
2370 return; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
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diff
changeset
|
2371 } |
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6655646: dynamic languages need dynamically linked call sites
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parents:
431
diff
changeset
|
2372 } else { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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diff
changeset
|
2373 ref_class_type = cp_ref_index_to_type(index, cp, CHECK_VERIFY(this)); |
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6655646: dynamic languages need dynamically linked call sites
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diff
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|
2374 } |
0 | 2375 |
2376 // For a small signature length, we just allocate 128 bytes instead | |
2377 // of parsing the signature once to find its size. | |
2378 // -3 is for '(', ')' and return descriptor; multiply by 2 is for | |
2379 // longs/doubles to be consertive. | |
2380 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
2381 "buffer type must match VerificationType size"); | |
2382 uintptr_t on_stack_sig_types_buffer[128]; | |
2383 // If we make a VerificationType[128] array directly, the compiler calls | |
2384 // to the c-runtime library to do the allocation instead of just | |
2385 // stack allocating it. Plus it would run constructors. This shows up | |
2386 // in performance profiles. | |
2387 | |
2388 VerificationType* sig_types; | |
2389 int size = (method_sig->utf8_length() - 3) * 2; | |
2390 if (size > 128) { | |
2391 // Long and double occupies two slots here. | |
2392 ArgumentSizeComputer size_it(method_sig); | |
2393 size = size_it.size(); | |
2394 sig_types = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, VerificationType, size); | |
2395 } else{ | |
2396 sig_types = (VerificationType*)on_stack_sig_types_buffer; | |
2397 } | |
2398 SignatureStream sig_stream(method_sig); | |
2399 int sig_i = 0; | |
2400 while (!sig_stream.at_return_type()) { | |
2401 sig_i += change_sig_to_verificationType( | |
2402 &sig_stream, &sig_types[sig_i], CHECK_VERIFY(this)); | |
2403 sig_stream.next(); | |
2404 } | |
2405 int nargs = sig_i; | |
2406 | |
2407 #ifdef ASSERT | |
2408 { | |
2409 ArgumentSizeComputer size_it(method_sig); | |
2410 assert(nargs == size_it.size(), "Argument sizes do not match"); | |
2411 assert(nargs <= (method_sig->utf8_length() - 3) * 2, "estimate of max size isn't conservative enough"); | |
2412 } | |
2413 #endif | |
2414 | |
2415 // Check instruction operands | |
2416 u2 bci = bcs->bci(); | |
2417 if (opcode == Bytecodes::_invokeinterface) { | |
2418 address bcp = bcs->bcp(); | |
2419 // 4905268: count operand in invokeinterface should be nargs+1, not nargs. | |
2420 // JSR202 spec: The count operand of an invokeinterface instruction is valid if it is | |
2421 // the difference between the size of the operand stack before and after the instruction | |
2422 // executes. | |
2423 if (*(bcp+3) != (nargs+1)) { | |
6605 | 2424 verify_error(ErrorContext::bad_code(bci), |
2425 "Inconsistent args count operand in invokeinterface"); | |
0 | 2426 return; |
2427 } | |
2428 if (*(bcp+4) != 0) { | |
6605 | 2429 verify_error(ErrorContext::bad_code(bci), |
2430 "Fourth operand byte of invokeinterface must be zero"); | |
0 | 2431 return; |
2432 } | |
2433 } | |
2434 | |
726
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6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2435 if (opcode == Bytecodes::_invokedynamic) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
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diff
changeset
|
2436 address bcp = bcs->bcp(); |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2437 if (*(bcp+3) != 0 || *(bcp+4) != 0) { |
6605 | 2438 verify_error(ErrorContext::bad_code(bci), |
2439 "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
|
2440 return; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2441 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2442 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2443 |
0 | 2444 if (method_name->byte_at(0) == '<') { |
2445 // Make sure <init> can only be invoked by invokespecial | |
2446 if (opcode != Bytecodes::_invokespecial || | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2447 method_name != vmSymbols::object_initializer_name()) { |
6605 | 2448 verify_error(ErrorContext::bad_code(bci), |
2449 "Illegal call to internal method"); | |
0 | 2450 return; |
2451 } | |
2452 } else if (opcode == Bytecodes::_invokespecial | |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2453 && !is_same_or_direct_interface(current_class(), current_type(), ref_class_type) |
0 | 2454 && !ref_class_type.equals(VerificationType::reference_type( |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6608
diff
changeset
|
2455 current_class()->super()->name()))) { |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2456 bool subtype = false; |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2457 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
|
2458 if (!current_class()->is_anonymous()) { |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2459 subtype = ref_class_type.is_assignable_from( |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2460 current_type(), this, CHECK_VERIFY(this)); |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2461 } else { |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2462 VerificationType host_klass_type = |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2463 VerificationType::reference_type(current_class()->host_klass()->name()); |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2464 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
|
2465 |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2466 // 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
|
2467 // direct interface relative to the host class |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2468 have_imr_indirect = (have_imr_indirect && |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2469 !is_same_or_direct_interface( |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2470 InstanceKlass::cast(current_class()->host_klass()), |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2471 host_klass_type, ref_class_type)); |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2472 } |
0 | 2473 if (!subtype) { |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2474 verify_error(ErrorContext::bad_code(bci), |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2475 "Bad invokespecial instruction: " |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2476 "current class isn't assignable to reference class."); |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2477 return; |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2478 } else if (have_imr_indirect) { |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2479 verify_error(ErrorContext::bad_code(bci), |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2480 "Bad invokespecial instruction: " |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2481 "interface method reference is in an indirect superinterface."); |
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2482 return; |
0 | 2483 } |
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2484 |
0 | 2485 } |
2486 // Match method descriptor with operand stack | |
2487 for (int i = nargs - 1; i >= 0; i--) { // Run backwards | |
2488 current_frame->pop_stack(sig_types[i], CHECK_VERIFY(this)); | |
2489 } | |
2490 // Check objectref on operand stack | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2491 if (opcode != Bytecodes::_invokestatic && |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2492 opcode != Bytecodes::_invokedynamic) { |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2493 if (method_name == vmSymbols::object_initializer_name()) { // <init> method |
6605 | 2494 verify_invoke_init(bcs, index, ref_class_type, current_frame, |
0 | 2495 code_length, this_uninit, cp, CHECK_VERIFY(this)); |
2496 } else { // other methods | |
2497 // Ensures that target class is assignable to method class. | |
2498 if (opcode == Bytecodes::_invokespecial) { | |
12827
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2499 if (!current_class()->is_anonymous()) { |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2500 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
|
2501 } else { |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2502 // anonymous class invokespecial calls: check if the |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2503 // 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
|
2504 // 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
|
2505 VerificationType top = current_frame->pop_stack(CHECK_VERIFY(this)); |
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2506 VerificationType hosttype = |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2507 VerificationType::reference_type(current_class()->host_klass()->name()); |
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2508 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
|
2509 if (!subtype) { |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2510 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
|
2511 current_frame->stack_top_ctx(), |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2512 TypeOrigin::implicit(top)), |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2513 "Bad type on operand stack"); |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2514 return; |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2515 } |
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2516 } |
0 | 2517 } else if (opcode == Bytecodes::_invokevirtual) { |
2518 VerificationType stack_object_type = | |
2519 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
2520 if (current_type() != stack_object_type) { | |
2521 assert(cp->cache() == NULL, "not rewritten yet"); | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2522 Symbol* ref_class_name = |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2523 cp->klass_name_at(cp->klass_ref_index_at(index)); |
0 | 2524 // See the comments in verify_field_instructions() for |
2525 // the rationale behind this. | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2526 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
|
2527 Klass* ref_class = load_class(ref_class_name, CHECK); |
0 | 2528 if (is_protected_access( |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2529 _klass, ref_class, method_name, method_sig, true)) { |
0 | 2530 // It's protected access, check if stack object is |
2531 // assignable to current class. | |
2532 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
|
2533 stack_object_type, this, CHECK_VERIFY(this)); |
0 | 2534 if (!is_assignable) { |
2535 if (ref_class_type.name() == vmSymbols::java_lang_Object() | |
2536 && stack_object_type.is_array() | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2537 && method_name == vmSymbols::clone_name()) { |
0 | 2538 // Special case: arrays pretend to implement public Object |
2539 // clone(). | |
2540 } else { | |
6605 | 2541 verify_error(ErrorContext::bad_type(bci, |
2542 current_frame->stack_top_ctx(), | |
2543 TypeOrigin::implicit(current_type())), | |
2544 "Bad access to protected data in invokevirtual"); | |
0 | 2545 return; |
2546 } | |
2547 } | |
2548 } | |
2549 } | |
2550 } | |
2551 } else { | |
2552 assert(opcode == Bytecodes::_invokeinterface, "Unexpected opcode encountered"); | |
2553 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
2554 } | |
2555 } | |
2556 } | |
2557 // Push the result type. | |
2558 if (sig_stream.type() != T_VOID) { | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2559 if (method_name == vmSymbols::object_initializer_name()) { |
0 | 2560 // <init> method must have a void return type |
6605 | 2561 /* Unreachable? Class file parser verifies that methods with '<' have |
2562 * void return */ | |
2563 verify_error(ErrorContext::bad_code(bci), | |
2564 "Return type must be void in <init> method"); | |
0 | 2565 return; |
2566 } | |
2567 VerificationType return_type[2]; | |
2568 int n = change_sig_to_verificationType( | |
2569 &sig_stream, return_type, CHECK_VERIFY(this)); | |
2570 for (int i = 0; i < n; i++) { | |
2571 current_frame->push_stack(return_type[i], CHECK_VERIFY(this)); // push types backwards | |
2572 } | |
2573 } | |
2574 } | |
2575 | |
2576 VerificationType ClassVerifier::get_newarray_type( | |
2577 u2 index, u2 bci, TRAPS) { | |
2578 const char* from_bt[] = { | |
2579 NULL, NULL, NULL, NULL, "[Z", "[C", "[F", "[D", "[B", "[S", "[I", "[J", | |
2580 }; | |
2581 if (index < T_BOOLEAN || index > T_LONG) { | |
6605 | 2582 verify_error(ErrorContext::bad_code(bci), "Illegal newarray instruction"); |
0 | 2583 return VerificationType::bogus_type(); |
2584 } | |
2585 | |
2586 // from_bt[index] contains the array signature which has a length of 2 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2587 Symbol* sig = create_temporary_symbol( |
0 | 2588 from_bt[index], 2, CHECK_(VerificationType::bogus_type())); |
2589 return VerificationType::reference_type(sig); | |
2590 } | |
2591 | |
2592 void ClassVerifier::verify_anewarray( | |
6605 | 2593 u2 bci, u2 index, constantPoolHandle cp, |
2594 StackMapFrame* current_frame, TRAPS) { | |
2595 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); | |
0 | 2596 current_frame->pop_stack( |
2597 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2598 | |
2599 VerificationType component_type = | |
2600 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
2601 int length; | |
2602 char* arr_sig_str; | |
2603 if (component_type.is_array()) { // it's an array | |
2604 const char* component_name = component_type.name()->as_utf8(); | |
2605 // add one dimension to component | |
2606 length = (int)strlen(component_name) + 1; | |
2607 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
2608 arr_sig_str[0] = '['; | |
2609 strncpy(&arr_sig_str[1], component_name, length - 1); | |
2610 } else { // it's an object or interface | |
2611 const char* component_name = component_type.name()->as_utf8(); | |
2612 // add one dimension to component with 'L' prepended and ';' postpended. | |
2613 length = (int)strlen(component_name) + 3; | |
2614 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
2615 arr_sig_str[0] = '['; | |
2616 arr_sig_str[1] = 'L'; | |
2617 strncpy(&arr_sig_str[2], component_name, length - 2); | |
2618 arr_sig_str[length - 1] = ';'; | |
2619 } | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2620 Symbol* arr_sig = create_temporary_symbol( |
0 | 2621 arr_sig_str, length, CHECK_VERIFY(this)); |
2622 VerificationType new_array_type = VerificationType::reference_type(arr_sig); | |
2623 current_frame->push_stack(new_array_type, CHECK_VERIFY(this)); | |
2624 } | |
2625 | |
2626 void ClassVerifier::verify_iload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2627 current_frame->get_local( | |
2628 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2629 current_frame->push_stack( | |
2630 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2631 } | |
2632 | |
2633 void ClassVerifier::verify_lload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2634 current_frame->get_local_2( | |
2635 index, VerificationType::long_type(), | |
2636 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
2637 current_frame->push_stack_2( | |
2638 VerificationType::long_type(), | |
2639 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
2640 } | |
2641 | |
2642 void ClassVerifier::verify_fload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2643 current_frame->get_local( | |
2644 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
2645 current_frame->push_stack( | |
2646 VerificationType::float_type(), CHECK_VERIFY(this)); | |
2647 } | |
2648 | |
2649 void ClassVerifier::verify_dload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2650 current_frame->get_local_2( | |
2651 index, VerificationType::double_type(), | |
2652 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
2653 current_frame->push_stack_2( | |
2654 VerificationType::double_type(), | |
2655 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
2656 } | |
2657 | |
2658 void ClassVerifier::verify_aload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2659 VerificationType type = current_frame->get_local( | |
2660 index, VerificationType::reference_check(), CHECK_VERIFY(this)); | |
2661 current_frame->push_stack(type, CHECK_VERIFY(this)); | |
2662 } | |
2663 | |
2664 void ClassVerifier::verify_istore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2665 current_frame->pop_stack( | |
2666 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2667 current_frame->set_local( | |
2668 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2669 } | |
2670 | |
2671 void ClassVerifier::verify_lstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2672 current_frame->pop_stack_2( | |
2673 VerificationType::long2_type(), | |
2674 VerificationType::long_type(), CHECK_VERIFY(this)); | |
2675 current_frame->set_local_2( | |
2676 index, VerificationType::long_type(), | |
2677 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
2678 } | |
2679 | |
2680 void ClassVerifier::verify_fstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2681 current_frame->pop_stack(VerificationType::float_type(), CHECK_VERIFY(this)); | |
2682 current_frame->set_local( | |
2683 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
2684 } | |
2685 | |
2686 void ClassVerifier::verify_dstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2687 current_frame->pop_stack_2( | |
2688 VerificationType::double2_type(), | |
2689 VerificationType::double_type(), CHECK_VERIFY(this)); | |
2690 current_frame->set_local_2( | |
2691 index, VerificationType::double_type(), | |
2692 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
2693 } | |
2694 | |
2695 void ClassVerifier::verify_astore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2696 VerificationType type = current_frame->pop_stack( | |
2697 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
2698 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
2699 } | |
2700 | |
2701 void ClassVerifier::verify_iinc(u2 index, StackMapFrame* current_frame, TRAPS) { | |
2702 VerificationType type = current_frame->get_local( | |
2703 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
2704 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
2705 } | |
2706 | |
2707 void ClassVerifier::verify_return_value( | |
6605 | 2708 VerificationType return_type, VerificationType type, u2 bci, |
2709 StackMapFrame* current_frame, TRAPS) { | |
0 | 2710 if (return_type == VerificationType::bogus_type()) { |
6605 | 2711 verify_error(ErrorContext::bad_type(bci, |
2712 current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), | |
2713 "Method expects a return value"); | |
0 | 2714 return; |
2715 } | |
2177
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2716 bool match = return_type.is_assignable_from(type, this, CHECK_VERIFY(this)); |
0 | 2717 if (!match) { |
6605 | 2718 verify_error(ErrorContext::bad_type(bci, |
2719 current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), | |
2720 "Bad return type"); | |
0 | 2721 return; |
2722 } | |
2723 } | |
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2724 |
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2725 // The verifier creates symbols which are substrings of Symbols. |
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2726 // These are stored in the verifier until the end of verification so that |
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2727 // they can be reference counted. |
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2728 Symbol* ClassVerifier::create_temporary_symbol(const Symbol *s, int begin, |
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2729 int end, TRAPS) { |
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2730 Symbol* sym = SymbolTable::new_symbol(s, begin, end, CHECK_NULL); |
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2731 _symbols->push(sym); |
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2732 return sym; |
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2733 } |
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2734 |
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2735 Symbol* ClassVerifier::create_temporary_symbol(const char *s, int length, TRAPS) { |
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2736 Symbol* sym = SymbolTable::new_symbol(s, length, CHECK_NULL); |
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2737 _symbols->push(sym); |
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2738 return sym; |
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2739 } |