1 /*
2 * Copyright (c) 1997, 2023, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/javaClasses.inline.hpp"
27 #include "classfile/moduleEntry.hpp"
28 #include "classfile/packageEntry.hpp"
29 #include "classfile/stringTable.hpp"
30 #include "classfile/verifier.hpp"
31 #include "classfile/vmClasses.hpp"
32 #include "classfile/vmSymbols.hpp"
33 #include "interpreter/linkResolver.hpp"
34 #include "jvm.h"
35 #include "logging/log.hpp"
36 #include "memory/oopFactory.hpp"
37 #include "memory/resourceArea.hpp"
38 #include "memory/universe.hpp"
39 #include "oops/inlineKlass.inline.hpp"
40 #include "oops/instanceKlass.inline.hpp"
41 #include "oops/klass.inline.hpp"
42 #include "oops/objArrayKlass.hpp"
43 #include "oops/objArrayOop.inline.hpp"
44 #include "oops/oop.inline.hpp"
45 #include "oops/typeArrayOop.inline.hpp"
46 #include "prims/jvmtiExport.hpp"
47 #include "runtime/fieldDescriptor.inline.hpp"
48 #include "runtime/handles.inline.hpp"
49 #include "runtime/javaCalls.hpp"
50 #include "runtime/javaThread.hpp"
51 #include "runtime/reflection.hpp"
52 #include "runtime/reflectionUtils.hpp"
53 #include "runtime/signature.hpp"
54 #include "runtime/vframe.inline.hpp"
55 #include "utilities/formatBuffer.hpp"
56 #include "utilities/globalDefinitions.hpp"
57
58 static void trace_class_resolution(oop mirror) {
59 if (mirror == nullptr || java_lang_Class::is_primitive(mirror)) {
60 return;
61 }
62 Klass* to_class = java_lang_Class::as_Klass(mirror);
63 ResourceMark rm;
64 int line_number = -1;
65 const char * source_file = nullptr;
66 Klass* caller = nullptr;
67 JavaThread* jthread = JavaThread::current();
68 if (jthread->has_last_Java_frame()) {
69 vframeStream vfst(jthread);
70 // skip over any frames belonging to java.lang.Class
71 while (!vfst.at_end() &&
72 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class()) {
73 vfst.next();
74 }
75 if (!vfst.at_end()) {
76 // this frame is a likely suspect
77 caller = vfst.method()->method_holder();
78 line_number = vfst.method()->line_number_from_bci(vfst.bci());
79 Symbol* s = vfst.method()->method_holder()->source_file_name();
80 if (s != nullptr) {
81 source_file = s->as_C_string();
82 }
83 }
84 }
85 if (caller != nullptr) {
86 const char * from = caller->external_name();
87 const char * to = to_class->external_name();
88 // print in a single call to reduce interleaving between threads
89 if (source_file != nullptr) {
90 log_debug(class, resolve)("%s %s %s:%d (reflection)", from, to, source_file, line_number);
91 } else {
92 log_debug(class, resolve)("%s %s (reflection)", from, to);
93 }
94 }
95 }
96
97
98 oop Reflection::box(jvalue* value, BasicType type, TRAPS) {
99 if (type == T_VOID) {
100 return nullptr;
101 }
102 if (is_reference_type(type)) {
103 // regular objects are not boxed
104 return cast_to_oop(value->l);
105 }
106 oop result = java_lang_boxing_object::create(type, value, CHECK_NULL);
107 if (result == nullptr) {
108 THROW_(vmSymbols::java_lang_IllegalArgumentException(), result);
109 }
110 return result;
111 }
112
113
114 BasicType Reflection::unbox_for_primitive(oop box, jvalue* value, TRAPS) {
115 if (box == nullptr) {
116 THROW_(vmSymbols::java_lang_IllegalArgumentException(), T_ILLEGAL);
117 }
118 return java_lang_boxing_object::get_value(box, value);
119 }
120
121 BasicType Reflection::unbox_for_regular_object(oop box, jvalue* value) {
122 // Note: box is really the unboxed oop. It might even be a Short, etc.!
123 value->l = cast_from_oop<jobject>(box);
124 return T_OBJECT;
125 }
126
127
128 void Reflection::widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS) {
129 assert(wide_type != current_type, "widen should not be called with identical types");
130 switch (wide_type) {
131 case T_BOOLEAN:
132 case T_BYTE:
133 case T_CHAR:
134 break; // fail
135 case T_SHORT:
136 switch (current_type) {
137 case T_BYTE:
138 value->s = (jshort) value->b;
139 return;
140 default:
141 break;
142 }
143 break; // fail
144 case T_INT:
145 switch (current_type) {
146 case T_BYTE:
147 value->i = (jint) value->b;
148 return;
149 case T_CHAR:
150 value->i = (jint) value->c;
151 return;
152 case T_SHORT:
153 value->i = (jint) value->s;
154 return;
155 default:
156 break;
157 }
158 break; // fail
159 case T_LONG:
160 switch (current_type) {
161 case T_BYTE:
162 value->j = (jlong) value->b;
163 return;
164 case T_CHAR:
165 value->j = (jlong) value->c;
166 return;
167 case T_SHORT:
168 value->j = (jlong) value->s;
169 return;
170 case T_INT:
171 value->j = (jlong) value->i;
172 return;
173 default:
174 break;
175 }
176 break; // fail
177 case T_FLOAT:
178 switch (current_type) {
179 case T_BYTE:
180 value->f = (jfloat) value->b;
181 return;
182 case T_CHAR:
183 value->f = (jfloat) value->c;
184 return;
185 case T_SHORT:
186 value->f = (jfloat) value->s;
187 return;
188 case T_INT:
189 value->f = (jfloat) value->i;
190 return;
191 case T_LONG:
192 value->f = (jfloat) value->j;
193 return;
194 default:
195 break;
196 }
197 break; // fail
198 case T_DOUBLE:
199 switch (current_type) {
200 case T_BYTE:
201 value->d = (jdouble) value->b;
202 return;
203 case T_CHAR:
204 value->d = (jdouble) value->c;
205 return;
206 case T_SHORT:
207 value->d = (jdouble) value->s;
208 return;
209 case T_INT:
210 value->d = (jdouble) value->i;
211 return;
212 case T_FLOAT:
213 value->d = (jdouble) value->f;
214 return;
215 case T_LONG:
216 value->d = (jdouble) value->j;
217 return;
218 default:
219 break;
220 }
221 break; // fail
222 default:
223 break; // fail
224 }
225 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
226 }
227
228
229 BasicType Reflection::array_get(jvalue* value, arrayOop a, int index, TRAPS) {
230 if (!a->is_within_bounds(index)) {
231 THROW_(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), T_ILLEGAL);
232 }
233 if (a->is_objArray()) {
234 value->l = cast_from_oop<jobject>(objArrayOop(a)->obj_at(index));
235 return T_OBJECT;
236 } else {
237 assert(a->is_typeArray(), "just checking");
238 BasicType type = TypeArrayKlass::cast(a->klass())->element_type();
239 switch (type) {
240 case T_BOOLEAN:
241 value->z = typeArrayOop(a)->bool_at(index);
242 break;
243 case T_CHAR:
244 value->c = typeArrayOop(a)->char_at(index);
245 break;
246 case T_FLOAT:
247 value->f = typeArrayOop(a)->float_at(index);
248 break;
249 case T_DOUBLE:
250 value->d = typeArrayOop(a)->double_at(index);
251 break;
252 case T_BYTE:
253 value->b = typeArrayOop(a)->byte_at(index);
254 break;
255 case T_SHORT:
256 value->s = typeArrayOop(a)->short_at(index);
257 break;
258 case T_INT:
259 value->i = typeArrayOop(a)->int_at(index);
260 break;
261 case T_LONG:
262 value->j = typeArrayOop(a)->long_at(index);
263 break;
264 default:
265 return T_ILLEGAL;
266 }
267 return type;
268 }
269 }
270
271
272 void Reflection::array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS) {
273 if (!a->is_within_bounds(index)) {
274 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
275 }
276 if (a->is_objArray()) {
277 if (value_type == T_OBJECT) {
278 oop obj = cast_to_oop(value->l);
279 if (obj != nullptr) {
280 Klass* element_klass = ObjArrayKlass::cast(a->klass())->element_klass();
281 if (!obj->is_a(element_klass)) {
282 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array element type mismatch");
283 }
284 }
285 objArrayOop(a)->obj_at_put(index, obj);
286 }
287 } else {
288 assert(a->is_typeArray(), "just checking");
289 BasicType array_type = TypeArrayKlass::cast(a->klass())->element_type();
290 if (array_type != value_type) {
291 // The widen operation can potentially throw an exception, but cannot block,
292 // so typeArrayOop a is safe if the call succeeds.
293 widen(value, value_type, array_type, CHECK);
294 }
295 switch (array_type) {
296 case T_BOOLEAN:
297 typeArrayOop(a)->bool_at_put(index, value->z);
298 break;
299 case T_CHAR:
300 typeArrayOop(a)->char_at_put(index, value->c);
301 break;
302 case T_FLOAT:
303 typeArrayOop(a)->float_at_put(index, value->f);
304 break;
305 case T_DOUBLE:
306 typeArrayOop(a)->double_at_put(index, value->d);
307 break;
308 case T_BYTE:
309 typeArrayOop(a)->byte_at_put(index, value->b);
310 break;
311 case T_SHORT:
312 typeArrayOop(a)->short_at_put(index, value->s);
313 break;
314 case T_INT:
315 typeArrayOop(a)->int_at_put(index, value->i);
316 break;
317 case T_LONG:
318 typeArrayOop(a)->long_at_put(index, value->j);
319 break;
320 default:
321 THROW(vmSymbols::java_lang_IllegalArgumentException());
322 }
323 }
324 }
325
326 static Klass* basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS) {
327 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking");
328 BasicType type = java_lang_Class::primitive_type(basic_type_mirror);
329 if (type == T_VOID) {
330 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
331 }
332 else {
333 return Universe::typeArrayKlassObj(type);
334 }
335 }
336
337 arrayOop Reflection::reflect_new_array(oop element_mirror, jint length, TRAPS) {
338 if (element_mirror == nullptr) {
339 THROW_0(vmSymbols::java_lang_NullPointerException());
340 }
341 if (length < 0) {
342 THROW_MSG_0(vmSymbols::java_lang_NegativeArraySizeException(), err_msg("%d", length));
343 }
344 if (java_lang_Class::is_primitive(element_mirror)) {
345 Klass* tak = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL);
346 return TypeArrayKlass::cast(tak)->allocate(length, THREAD);
347 } else {
348 Klass* k = java_lang_Class::as_Klass(element_mirror);
349 if (k->is_array_klass() && ArrayKlass::cast(k)->dimension() >= MAX_DIM) {
350 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
351 }
352 if (k->is_inline_klass() && java_lang_Class::is_secondary_mirror(element_mirror)) {
353 return oopFactory::new_valueArray(k, length, THREAD);
354 } else {
355 return oopFactory::new_objArray(k, length, THREAD);
356 }
357 }
358 }
359
360
361 arrayOop Reflection::reflect_new_multi_array(oop element_mirror, typeArrayOop dim_array, TRAPS) {
362 assert(dim_array->is_typeArray(), "just checking");
363 assert(TypeArrayKlass::cast(dim_array->klass())->element_type() == T_INT, "just checking");
364
365 if (element_mirror == nullptr) {
366 THROW_0(vmSymbols::java_lang_NullPointerException());
367 }
368
369 int len = dim_array->length();
370 if (len <= 0 || len > MAX_DIM) {
371 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
372 }
373
374 jint dimensions[MAX_DIM]; // C array copy of intArrayOop
375 for (int i = 0; i < len; i++) {
376 int d = dim_array->int_at(i);
377 if (d < 0) {
378 THROW_MSG_0(vmSymbols::java_lang_NegativeArraySizeException(), err_msg("%d", d));
379 }
380 dimensions[i] = d;
381 }
382
383 Klass* klass;
384 int dim = len;
385 if (java_lang_Class::is_primitive(element_mirror)) {
386 klass = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL);
387 } else {
388 klass = java_lang_Class::as_Klass(element_mirror);
389 if (klass->is_array_klass()) {
390 int k_dim = ArrayKlass::cast(klass)->dimension();
391 if (k_dim + len > MAX_DIM) {
392 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
393 }
394 dim += k_dim;
395 }
396 }
397 if (klass->is_inline_klass() && java_lang_Class::is_secondary_mirror(element_mirror)) {
398 klass = InlineKlass::cast(klass)->value_array_klass(dim, CHECK_NULL);
399 } else {
400 klass = klass->array_klass(dim, CHECK_NULL);
401 }
402 oop obj = ArrayKlass::cast(klass)->multi_allocate(len, dimensions, CHECK_NULL);
403 assert(obj->is_array(), "just checking");
404 return arrayOop(obj);
405 }
406
407
408 static bool can_relax_access_check_for(const Klass* accessor,
409 const Klass* accessee,
410 bool classloader_only) {
411
412 const InstanceKlass* accessor_ik = InstanceKlass::cast(accessor);
413 const InstanceKlass* accessee_ik = InstanceKlass::cast(accessee);
414
415 if (RelaxAccessControlCheck &&
416 accessor_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION &&
417 accessee_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION) {
418 return classloader_only &&
419 Verifier::relax_access_for(accessor_ik->class_loader()) &&
420 accessor_ik->protection_domain() == accessee_ik->protection_domain() &&
421 accessor_ik->class_loader() == accessee_ik->class_loader();
422 }
423
424 return false;
425 }
426
427 /*
428 Type Accessibility check for public types: Callee Type T is accessible to Caller Type S if:
429
430 Callee T in Callee T in package PT,
431 unnamed module runtime module MT
432 ------------------------------------------------------------------------------------------------
433
434 Caller S in package If MS is loose: YES If same classloader/package (PS == PT): YES
435 PS, runtime module MS If MS can read T's If same runtime module: (MS == MT): YES
436 unnamed module: YES
437 Else if (MS can read MT (establish readability) &&
438 ((MT exports PT to MS or to all modules) ||
439 (MT is open))): YES
440
441 ------------------------------------------------------------------------------------------------
442 Caller S in unnamed YES Readability exists because unnamed module
443 module UM "reads" all modules
444 if (MT exports PT to UM or to all modules): YES
445
446 ------------------------------------------------------------------------------------------------
447
448 Note: a loose module is a module that can read all current and future unnamed modules.
449 */
450 Reflection::VerifyClassAccessResults Reflection::verify_class_access(
451 const Klass* current_class, const InstanceKlass* new_class, bool classloader_only) {
452
453 // Verify that current_class can access new_class. If the classloader_only
454 // flag is set, we automatically allow any accesses in which current_class
455 // doesn't have a classloader.
456 if ((current_class == nullptr) ||
457 (current_class == new_class) ||
458 is_same_class_package(current_class, new_class)) {
459 return ACCESS_OK;
460 }
461 // Allow all accesses from jdk/internal/reflect/MagicAccessorImpl subclasses to
462 // succeed trivially.
463 if (vmClasses::reflect_MagicAccessorImpl_klass_is_loaded() &&
464 current_class->is_subclass_of(vmClasses::reflect_MagicAccessorImpl_klass())) {
465 return ACCESS_OK;
466 }
467
468 // module boundaries
469 if (new_class->is_public()) {
470 // Ignore modules for DumpSharedSpaces because we do not have any package
471 // or module information for modules other than java.base.
472 if (DumpSharedSpaces) {
473 return ACCESS_OK;
474 }
475
476 // Find the module entry for current_class, the accessor
477 ModuleEntry* module_from = current_class->module();
478 // Find the module entry for new_class, the accessee
479 ModuleEntry* module_to = new_class->module();
480
481 // both in same (possibly unnamed) module
482 if (module_from == module_to) {
483 return ACCESS_OK;
484 }
485
486 // Acceptable access to a type in an unnamed module. Note that since
487 // unnamed modules can read all unnamed modules, this also handles the
488 // case where module_from is also unnamed but in a different class loader.
489 if (!module_to->is_named() &&
490 (module_from->can_read_all_unnamed() || module_from->can_read(module_to))) {
491 return ACCESS_OK;
492 }
493
494 // Establish readability, check if module_from is allowed to read module_to.
495 if (!module_from->can_read(module_to)) {
496 return MODULE_NOT_READABLE;
497 }
498
499 // Access is allowed if module_to is open, i.e. all its packages are unqualifiedly exported
500 if (module_to->is_open()) {
501 return ACCESS_OK;
502 }
503
504 PackageEntry* package_to = new_class->package();
505 assert(package_to != nullptr, "can not obtain new_class' package");
506
507 {
508 MutexLocker m1(Module_lock);
509
510 // Once readability is established, if module_to exports T unqualifiedly,
511 // (to all modules), than whether module_from is in the unnamed module
512 // or not does not matter, access is allowed.
513 if (package_to->is_unqual_exported()) {
514 return ACCESS_OK;
515 }
516
517 // Access is allowed if both 1 & 2 hold:
518 // 1. Readability, module_from can read module_to (established above).
519 // 2. Either module_to exports T to module_from qualifiedly.
520 // or
521 // module_to exports T to all unnamed modules and module_from is unnamed.
522 // or
523 // module_to exports T unqualifiedly to all modules (checked above).
524 if (!package_to->is_qexported_to(module_from)) {
525 return TYPE_NOT_EXPORTED;
526 }
527 }
528 return ACCESS_OK;
529 }
530
531 if (can_relax_access_check_for(current_class, new_class, classloader_only)) {
532 return ACCESS_OK;
533 }
534 return OTHER_PROBLEM;
535 }
536
537 // Return an error message specific to the specified Klass*'s and result.
538 // This function must be called from within a block containing a ResourceMark.
539 char* Reflection::verify_class_access_msg(const Klass* current_class,
540 const InstanceKlass* new_class,
541 const VerifyClassAccessResults result) {
542 assert(result != ACCESS_OK, "must be failure result");
543 char * msg = nullptr;
544 if (result != OTHER_PROBLEM && new_class != nullptr && current_class != nullptr) {
545 // Find the module entry for current_class, the accessor
546 ModuleEntry* module_from = current_class->module();
547 const char * module_from_name = module_from->is_named() ? module_from->name()->as_C_string() : UNNAMED_MODULE;
548 const char * current_class_name = current_class->external_name();
549
550 // Find the module entry for new_class, the accessee
551 ModuleEntry* module_to = nullptr;
552 module_to = new_class->module();
553 const char * module_to_name = module_to->is_named() ? module_to->name()->as_C_string() : UNNAMED_MODULE;
554 const char * new_class_name = new_class->external_name();
555
556 if (result == MODULE_NOT_READABLE) {
557 assert(module_from->is_named(), "Unnamed modules can read all modules");
558 if (module_to->is_named()) {
559 size_t len = 100 + strlen(current_class_name) + 2*strlen(module_from_name) +
560 strlen(new_class_name) + 2*strlen(module_to_name);
561 msg = NEW_RESOURCE_ARRAY(char, len);
562 jio_snprintf(msg, len - 1,
563 "class %s (in module %s) cannot access class %s (in module %s) because module %s does not read module %s",
564 current_class_name, module_from_name, new_class_name,
565 module_to_name, module_from_name, module_to_name);
566 } else {
567 oop jlm = module_to->module();
568 assert(jlm != nullptr, "Null jlm in module_to ModuleEntry");
569 intptr_t identity_hash = jlm->identity_hash();
570 size_t len = 160 + strlen(current_class_name) + 2*strlen(module_from_name) +
571 strlen(new_class_name) + 2*sizeof(uintx);
572 msg = NEW_RESOURCE_ARRAY(char, len);
573 jio_snprintf(msg, len - 1,
574 "class %s (in module %s) cannot access class %s (in unnamed module @" SIZE_FORMAT_X ") because module %s does not read unnamed module @" SIZE_FORMAT_X,
575 current_class_name, module_from_name, new_class_name, uintx(identity_hash),
576 module_from_name, uintx(identity_hash));
577 }
578
579 } else if (result == TYPE_NOT_EXPORTED) {
580 assert(new_class->package() != nullptr,
581 "Unnamed packages are always exported");
582 const char * package_name =
583 new_class->package()->name()->as_klass_external_name();
584 assert(module_to->is_named(), "Unnamed modules export all packages");
585 if (module_from->is_named()) {
586 size_t len = 118 + strlen(current_class_name) + 2*strlen(module_from_name) +
587 strlen(new_class_name) + 2*strlen(module_to_name) + strlen(package_name);
588 msg = NEW_RESOURCE_ARRAY(char, len);
589 jio_snprintf(msg, len - 1,
590 "class %s (in module %s) cannot access class %s (in module %s) because module %s does not export %s to module %s",
591 current_class_name, module_from_name, new_class_name,
592 module_to_name, module_to_name, package_name, module_from_name);
593 } else {
594 oop jlm = module_from->module();
595 assert(jlm != nullptr, "Null jlm in module_from ModuleEntry");
596 intptr_t identity_hash = jlm->identity_hash();
597 size_t len = 170 + strlen(current_class_name) + strlen(new_class_name) +
598 2*strlen(module_to_name) + strlen(package_name) + 2*sizeof(uintx);
599 msg = NEW_RESOURCE_ARRAY(char, len);
600 jio_snprintf(msg, len - 1,
601 "class %s (in unnamed module @" SIZE_FORMAT_X ") cannot access class %s (in module %s) because module %s does not export %s to unnamed module @" SIZE_FORMAT_X,
602 current_class_name, uintx(identity_hash), new_class_name, module_to_name,
603 module_to_name, package_name, uintx(identity_hash));
604 }
605 } else {
606 ShouldNotReachHere();
607 }
608 } // result != OTHER_PROBLEM...
609 return msg;
610 }
611
612 bool Reflection::verify_member_access(const Klass* current_class,
613 const Klass* resolved_class,
614 const Klass* member_class,
615 AccessFlags access,
616 bool classloader_only,
617 bool protected_restriction,
618 TRAPS) {
619 // Verify that current_class can access a member of member_class, where that
620 // field's access bits are "access". We assume that we've already verified
621 // that current_class can access member_class.
622 //
623 // If the classloader_only flag is set, we automatically allow any accesses
624 // in which current_class doesn't have a classloader.
625 //
626 // "resolved_class" is the runtime type of "member_class". Sometimes we don't
627 // need this distinction (e.g. if all we have is the runtime type, or during
628 // class file parsing when we only care about the static type); in that case
629 // callers should ensure that resolved_class == member_class.
630 //
631 if ((current_class == nullptr) ||
632 (current_class == member_class) ||
633 access.is_public()) {
634 return true;
635 }
636
637 if (current_class == member_class) {
638 return true;
639 }
640
641 if (access.is_protected()) {
642 if (!protected_restriction) {
643 // See if current_class (or outermost host class) is a subclass of member_class
644 // An interface may not access protected members of j.l.Object
645 if (!current_class->is_interface() && current_class->is_subclass_of(member_class)) {
646 if (access.is_static() || // static fields are ok, see 6622385
647 current_class == resolved_class ||
648 member_class == resolved_class ||
649 current_class->is_subclass_of(resolved_class) ||
650 resolved_class->is_subclass_of(current_class)) {
651 return true;
652 }
653 }
654 }
655 }
656
657 // package access
658 if (!access.is_private() && is_same_class_package(current_class, member_class)) {
659 return true;
660 }
661
662 // private access between different classes needs a nestmate check.
663 if (access.is_private()) {
664 if (current_class->is_instance_klass() && member_class->is_instance_klass() ) {
665 InstanceKlass* cur_ik = const_cast<InstanceKlass*>(InstanceKlass::cast(current_class));
666 InstanceKlass* field_ik = const_cast<InstanceKlass*>(InstanceKlass::cast(member_class));
667 // Nestmate access checks may require resolution and validation of the nest-host.
668 // It is up to the caller to check for pending exceptions and handle appropriately.
669 bool access = cur_ik->has_nestmate_access_to(field_ik, CHECK_false);
670 if (access) {
671 guarantee(resolved_class->is_subclass_of(member_class), "must be!");
672 return true;
673 }
674 }
675 }
676
677 // Allow all accesses from jdk/internal/reflect/MagicAccessorImpl subclasses to
678 // succeed trivially.
679 if (current_class->is_subclass_of(vmClasses::reflect_MagicAccessorImpl_klass())) {
680 return true;
681 }
682
683 // Check for special relaxations
684 return can_relax_access_check_for(current_class, member_class, classloader_only);
685 }
686
687 bool Reflection::is_same_class_package(const Klass* class1, const Klass* class2) {
688 return InstanceKlass::cast(class1)->is_same_class_package(class2);
689 }
690
691 // Checks that the 'outer' klass has declared 'inner' as being an inner klass. If not,
692 // throw an incompatible class change exception
693 // If inner_is_member, require the inner to be a member of the outer.
694 // If !inner_is_member, require the inner to be hidden (non-member).
695 // Caller is responsible for figuring out in advance which case must be true.
696 void Reflection::check_for_inner_class(const InstanceKlass* outer, const InstanceKlass* inner,
697 bool inner_is_member, TRAPS) {
698 InnerClassesIterator iter(outer);
699 constantPoolHandle cp (THREAD, outer->constants());
700 for (; !iter.done(); iter.next()) {
701 int ioff = iter.inner_class_info_index();
702 int ooff = iter.outer_class_info_index();
703
704 if (inner_is_member && ioff != 0 && ooff != 0) {
705 if (cp->klass_name_at_matches(outer, ooff) &&
706 cp->klass_name_at_matches(inner, ioff)) {
707 Klass* o = cp->klass_at(ooff, CHECK);
708 if (o == outer) {
709 Klass* i = cp->klass_at(ioff, CHECK);
710 if (i == inner) {
711 return;
712 }
713 }
714 }
715 }
716
717 if (!inner_is_member && ioff != 0 && ooff == 0 &&
718 cp->klass_name_at_matches(inner, ioff)) {
719 Klass* i = cp->klass_at(ioff, CHECK);
720 if (i == inner) {
721 return;
722 }
723 }
724 }
725
726 // 'inner' not declared as an inner klass in outer
727 ResourceMark rm(THREAD);
728 Exceptions::fthrow(
729 THREAD_AND_LOCATION,
730 vmSymbols::java_lang_IncompatibleClassChangeError(),
731 "%s and %s disagree on InnerClasses attribute",
732 outer->external_name(),
733 inner->external_name()
734 );
735 }
736
737 static objArrayHandle get_parameter_types(const methodHandle& method,
738 int parameter_count,
739 oop* return_type,
740 TRAPS) {
741 objArrayOop m;
742 if (parameter_count == 0) {
743 // Avoid allocating an array for the empty case
744 // Still need to parse the signature for the return type below
745 m = Universe::the_empty_class_array();
746 } else {
747 // Allocate array holding parameter types (java.lang.Class instances)
748 m = oopFactory::new_objArray(vmClasses::Class_klass(), parameter_count, CHECK_(objArrayHandle()));
749 }
750 objArrayHandle mirrors(THREAD, m);
751 int index = 0;
752 // Collect parameter types
753 ResourceMark rm(THREAD);
754 for (ResolvingSignatureStream ss(method()); !ss.is_done(); ss.next()) {
755 oop mirror = ss.as_java_mirror(SignatureStream::NCDFError, CHECK_(objArrayHandle()));
756 if (log_is_enabled(Debug, class, resolve)) {
757 trace_class_resolution(mirror);
758 }
759 if (!ss.at_return_type()) {
760 mirrors->obj_at_put(index++, mirror);
761 } else if (return_type != nullptr) {
762 // Collect return type as well
763 assert(ss.at_return_type(), "return type should be present");
764 *return_type = mirror;
765 }
766 }
767 assert(index == parameter_count, "invalid parameter count");
768 return mirrors;
769 }
770
771 static objArrayHandle get_exception_types(const methodHandle& method, TRAPS) {
772 return method->resolved_checked_exceptions(THREAD);
773 }
774
775 static Handle new_type(Symbol* signature, Klass* k, TRAPS) {
776 ResolvingSignatureStream ss(signature, k, false);
777 oop nt = ss.as_java_mirror(SignatureStream::NCDFError, CHECK_NH);
778 return Handle(THREAD, nt);
779 }
780
781 oop Reflection::new_method(const methodHandle& method, bool for_constant_pool_access, TRAPS) {
782 // Allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods.
783 assert(!method()->name()->starts_with('<') || for_constant_pool_access,
784 "should call new_constructor instead");
785 InstanceKlass* holder = method->method_holder();
786 int slot = method->method_idnum();
787
788 Symbol* signature = method->signature();
789 int parameter_count = ArgumentCount(signature).size();
790 oop return_type_oop = nullptr;
791 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, &return_type_oop, CHECK_NULL);
792 if (parameter_types.is_null() || return_type_oop == nullptr) return nullptr;
793
794 Handle return_type(THREAD, return_type_oop);
795
796 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL);
797 assert(!exception_types.is_null(), "cannot return null");
798
799 Symbol* method_name = method->name();
800 oop name_oop = StringTable::intern(method_name, CHECK_NULL);
801 Handle name = Handle(THREAD, name_oop);
802 if (name == nullptr) return nullptr;
803
804 const int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
805
806 Handle mh = java_lang_reflect_Method::create(CHECK_NULL);
807
808 java_lang_reflect_Method::set_clazz(mh(), holder->java_mirror());
809 java_lang_reflect_Method::set_slot(mh(), slot);
810 java_lang_reflect_Method::set_name(mh(), name());
811 java_lang_reflect_Method::set_return_type(mh(), return_type());
812 java_lang_reflect_Method::set_parameter_types(mh(), parameter_types());
813 java_lang_reflect_Method::set_exception_types(mh(), exception_types());
814 java_lang_reflect_Method::set_modifiers(mh(), modifiers);
815 java_lang_reflect_Method::set_override(mh(), false);
816 if (method->generic_signature() != nullptr) {
817 Symbol* gs = method->generic_signature();
818 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
819 java_lang_reflect_Method::set_signature(mh(), sig());
820 }
821 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL);
822 java_lang_reflect_Method::set_annotations(mh(), an_oop);
823 an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL);
824 java_lang_reflect_Method::set_parameter_annotations(mh(), an_oop);
825 an_oop = Annotations::make_java_array(method->annotation_default(), CHECK_NULL);
826 java_lang_reflect_Method::set_annotation_default(mh(), an_oop);
827 return mh();
828 }
829
830
831 oop Reflection::new_constructor(const methodHandle& method, TRAPS) {
832 assert(method()->is_object_constructor() ||
833 method()->is_static_vnew_factory(),
834 "should call new_method instead");
835
836 InstanceKlass* holder = method->method_holder();
837 int slot = method->method_idnum();
838
839 Symbol* signature = method->signature();
840 int parameter_count = ArgumentCount(signature).size();
841 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, nullptr, CHECK_NULL);
842 if (parameter_types.is_null()) return nullptr;
843
844 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL);
845 assert(!exception_types.is_null(), "cannot return null");
846
847 const int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
848
849 Handle ch = java_lang_reflect_Constructor::create(CHECK_NULL);
850
851 java_lang_reflect_Constructor::set_clazz(ch(), holder->java_mirror());
852 java_lang_reflect_Constructor::set_slot(ch(), slot);
853 java_lang_reflect_Constructor::set_parameter_types(ch(), parameter_types());
854 java_lang_reflect_Constructor::set_exception_types(ch(), exception_types());
855 java_lang_reflect_Constructor::set_modifiers(ch(), modifiers);
856 java_lang_reflect_Constructor::set_override(ch(), false);
857 if (method->generic_signature() != nullptr) {
858 Symbol* gs = method->generic_signature();
859 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
860 java_lang_reflect_Constructor::set_signature(ch(), sig());
861 }
862 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL);
863 java_lang_reflect_Constructor::set_annotations(ch(), an_oop);
864 an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL);
865 java_lang_reflect_Constructor::set_parameter_annotations(ch(), an_oop);
866 return ch();
867 }
868
869
870 oop Reflection::new_field(fieldDescriptor* fd, TRAPS) {
871 Symbol* field_name = fd->name();
872 oop name_oop = StringTable::intern(field_name, CHECK_NULL);
873 Handle name = Handle(THREAD, name_oop);
874 Symbol* signature = fd->signature();
875 InstanceKlass* holder = fd->field_holder();
876 Handle type = new_type(signature, holder, CHECK_NULL);
877 Handle rh = java_lang_reflect_Field::create(CHECK_NULL);
878
879 java_lang_reflect_Field::set_clazz(rh(), fd->field_holder()->java_mirror());
880 java_lang_reflect_Field::set_slot(rh(), fd->index());
881 java_lang_reflect_Field::set_name(rh(), name());
882 java_lang_reflect_Field::set_type(rh(), type());
883 if (fd->is_trusted_final()) {
884 java_lang_reflect_Field::set_trusted_final(rh());
885 }
886 // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here.
887 int modifiers = fd->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS;
888 java_lang_reflect_Field::set_modifiers(rh(), modifiers);
889 java_lang_reflect_Field::set_override(rh(), false);
890 if (fd->has_generic_signature()) {
891 Symbol* gs = fd->generic_signature();
892 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
893 java_lang_reflect_Field::set_signature(rh(), sig());
894 }
895 typeArrayOop an_oop = Annotations::make_java_array(fd->annotations(), CHECK_NULL);
896 java_lang_reflect_Field::set_annotations(rh(), an_oop);
897 return rh();
898 }
899
900 oop Reflection::new_parameter(Handle method, int index, Symbol* sym,
901 int flags, TRAPS) {
902
903 Handle rh = java_lang_reflect_Parameter::create(CHECK_NULL);
904
905 if(nullptr != sym) {
906 Handle name = java_lang_String::create_from_symbol(sym, CHECK_NULL);
907 java_lang_reflect_Parameter::set_name(rh(), name());
908 } else {
909 java_lang_reflect_Parameter::set_name(rh(), nullptr);
910 }
911
912 java_lang_reflect_Parameter::set_modifiers(rh(), flags);
913 java_lang_reflect_Parameter::set_executable(rh(), method());
914 java_lang_reflect_Parameter::set_index(rh(), index);
915 return rh();
916 }
917
918
919 static methodHandle resolve_interface_call(InstanceKlass* klass,
920 const methodHandle& method,
921 Klass* recv_klass,
922 Handle receiver,
923 TRAPS) {
924
925 assert(!method.is_null() , "method should not be null");
926
927 CallInfo info;
928 Symbol* signature = method->signature();
929 Symbol* name = method->name();
930 LinkResolver::resolve_interface_call(info, receiver, recv_klass,
931 LinkInfo(klass, name, signature),
932 true,
933 CHECK_(methodHandle()));
934 return methodHandle(THREAD, info.selected_method());
935 }
936
937 // Conversion
938 static BasicType basic_type_mirror_to_basic_type(oop basic_type_mirror) {
939 assert(java_lang_Class::is_primitive(basic_type_mirror),
940 "just checking");
941 return java_lang_Class::primitive_type(basic_type_mirror);
942 }
943
944 // Narrowing of basic types. Used to create correct jvalues for
945 // boolean, byte, char and short return return values from interpreter
946 // which are returned as ints. Throws IllegalArgumentException.
947 static void narrow(jvalue* value, BasicType narrow_type, TRAPS) {
948 switch (narrow_type) {
949 case T_BOOLEAN:
950 value->z = (jboolean) (value->i & 1);
951 return;
952 case T_BYTE:
953 value->b = (jbyte)value->i;
954 return;
955 case T_CHAR:
956 value->c = (jchar)value->i;
957 return;
958 case T_SHORT:
959 value->s = (jshort)value->i;
960 return;
961 default:
962 break; // fail
963 }
964 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
965 }
966
967
968 // Method call (shared by invoke_method and invoke_constructor)
969 static oop invoke(InstanceKlass* klass,
970 const methodHandle& reflected_method,
971 Handle receiver,
972 bool override,
973 objArrayHandle ptypes,
974 BasicType rtype,
975 objArrayHandle args,
976 bool is_method_invoke,
977 TRAPS) {
978
979 ResourceMark rm(THREAD);
980
981 methodHandle method; // actual method to invoke
982 Klass* target_klass; // target klass, receiver's klass for non-static
983
984 // Ensure klass is initialized
985 klass->initialize(CHECK_NULL);
986
987 bool is_static = reflected_method->is_static();
988 if (is_static) {
989 // ignore receiver argument
990 method = reflected_method;
991 target_klass = klass;
992 } else {
993 // check for null receiver
994 if (receiver.is_null()) {
995 THROW_0(vmSymbols::java_lang_NullPointerException());
996 }
997 // Check class of receiver against class declaring method
998 if (!receiver->is_a(klass)) {
999 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class");
1000 }
1001 // target klass is receiver's klass
1002 target_klass = receiver->klass();
1003 // no need to resolve if method is private, <init> or <vnew>
1004 if (reflected_method->is_private() ||
1005 reflected_method->name() == vmSymbols::object_initializer_name() ||
1006 reflected_method->name() == vmSymbols::inline_factory_name()) {
1007 method = reflected_method;
1008 } else {
1009 // resolve based on the receiver
1010 if (reflected_method->method_holder()->is_interface()) {
1011 // resolve interface call
1012 //
1013 // Match resolution errors with those thrown due to reflection inlining
1014 // Linktime resolution & IllegalAccessCheck already done by Class.getMethod()
1015 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, THREAD);
1016 if (HAS_PENDING_EXCEPTION) {
1017 // Method resolution threw an exception; wrap it in an InvocationTargetException
1018 oop resolution_exception = PENDING_EXCEPTION;
1019 CLEAR_PENDING_EXCEPTION;
1020 // JVMTI has already reported the pending exception
1021 // JVMTI internal flag reset is needed in order to report InvocationTargetException
1022 JvmtiExport::clear_detected_exception(THREAD);
1023 JavaCallArguments args(Handle(THREAD, resolution_exception));
1024 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
1025 vmSymbols::throwable_void_signature(),
1026 &args);
1027 }
1028 } else {
1029 // if the method can be overridden, we resolve using the vtable index.
1030 assert(!reflected_method->has_itable_index(), "");
1031 int index = reflected_method->vtable_index();
1032 method = reflected_method;
1033 if (index != Method::nonvirtual_vtable_index) {
1034 method = methodHandle(THREAD, target_klass->method_at_vtable(index));
1035 }
1036 if (!method.is_null()) {
1037 // Check for abstract methods as well
1038 if (method->is_abstract()) {
1039 // new default: 6531596
1040 ResourceMark rm(THREAD);
1041 stringStream ss;
1042 ss.print("'");
1043 Method::print_external_name(&ss, target_klass, method->name(), method->signature());
1044 ss.print("'");
1045 Handle h_origexception = Exceptions::new_exception(THREAD,
1046 vmSymbols::java_lang_AbstractMethodError(), ss.as_string());
1047 JavaCallArguments args(h_origexception);
1048 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
1049 vmSymbols::throwable_void_signature(),
1050 &args);
1051 }
1052 }
1053 }
1054 }
1055 }
1056
1057 // I believe this is a ShouldNotGetHere case which requires
1058 // an internal vtable bug. If you ever get this please let Karen know.
1059 if (method.is_null()) {
1060 ResourceMark rm(THREAD);
1061 stringStream ss;
1062 ss.print("'");
1063 Method::print_external_name(&ss, klass,
1064 reflected_method->name(),
1065 reflected_method->signature());
1066 ss.print("'");
1067 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), ss.as_string());
1068 }
1069
1070 assert(ptypes->is_objArray(), "just checking");
1071 int args_len = args.is_null() ? 0 : args->length();
1072 // Check number of arguments
1073 if (ptypes->length() != args_len) {
1074 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1075 "wrong number of arguments");
1076 }
1077
1078 // Create object to contain parameters for the JavaCall
1079 JavaCallArguments java_args(method->size_of_parameters());
1080
1081 if (!is_static) {
1082 java_args.push_oop(receiver);
1083 }
1084
1085 for (int i = 0; i < args_len; i++) {
1086 oop type_mirror = ptypes->obj_at(i);
1087 oop arg = args->obj_at(i);
1088 if (java_lang_Class::is_primitive(type_mirror)) {
1089 jvalue value;
1090 BasicType ptype = basic_type_mirror_to_basic_type(type_mirror);
1091 BasicType atype = Reflection::unbox_for_primitive(arg, &value, CHECK_NULL);
1092 if (ptype != atype) {
1093 Reflection::widen(&value, atype, ptype, CHECK_NULL);
1094 }
1095 switch (ptype) {
1096 case T_BOOLEAN: java_args.push_int(value.z); break;
1097 case T_CHAR: java_args.push_int(value.c); break;
1098 case T_BYTE: java_args.push_int(value.b); break;
1099 case T_SHORT: java_args.push_int(value.s); break;
1100 case T_INT: java_args.push_int(value.i); break;
1101 case T_LONG: java_args.push_long(value.j); break;
1102 case T_FLOAT: java_args.push_float(value.f); break;
1103 case T_DOUBLE: java_args.push_double(value.d); break;
1104 default:
1105 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
1106 }
1107 } else {
1108 if (arg != nullptr) {
1109 Klass* k = java_lang_Class::as_Klass(type_mirror);
1110 if (!arg->is_a(k)) {
1111 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1112 "argument type mismatch");
1113 }
1114 }
1115 Handle arg_handle(THREAD, arg); // Create handle for argument
1116 java_args.push_oop(arg_handle); // Push handle
1117 }
1118 }
1119
1120 assert(java_args.size_of_parameters() == method->size_of_parameters(),
1121 "just checking");
1122
1123 // All oops (including receiver) is passed in as Handles. An potential oop is returned as an
1124 // oop (i.e., NOT as an handle)
1125 JavaValue result(rtype);
1126 JavaCalls::call(&result, method, &java_args, THREAD);
1127
1128 if (HAS_PENDING_EXCEPTION) {
1129 // Method threw an exception; wrap it in an InvocationTargetException
1130 oop target_exception = PENDING_EXCEPTION;
1131 CLEAR_PENDING_EXCEPTION;
1132 // JVMTI has already reported the pending exception
1133 // JVMTI internal flag reset is needed in order to report InvocationTargetException
1134 JvmtiExport::clear_detected_exception(THREAD);
1135
1136 JavaCallArguments args(Handle(THREAD, target_exception));
1137 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
1138 vmSymbols::throwable_void_signature(),
1139 &args);
1140 } else {
1141 if (rtype == T_BOOLEAN || rtype == T_BYTE || rtype == T_CHAR || rtype == T_SHORT) {
1142 narrow((jvalue*)result.get_value_addr(), rtype, CHECK_NULL);
1143 }
1144 return Reflection::box((jvalue*)result.get_value_addr(), rtype, THREAD);
1145 }
1146 }
1147
1148 // This would be nicer if, say, java.lang.reflect.Method was a subclass
1149 // of java.lang.reflect.Constructor
1150
1151 oop Reflection::invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS) {
1152 oop mirror = java_lang_reflect_Method::clazz(method_mirror);
1153 int slot = java_lang_reflect_Method::slot(method_mirror);
1154 bool override = java_lang_reflect_Method::override(method_mirror) != 0;
1155 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Method::parameter_types(method_mirror)));
1156
1157 oop return_type_mirror = java_lang_reflect_Method::return_type(method_mirror);
1158 BasicType rtype;
1159 if (java_lang_Class::is_primitive(return_type_mirror)) {
1160 rtype = basic_type_mirror_to_basic_type(return_type_mirror);
1161 } else if (java_lang_Class::as_Klass(return_type_mirror)->is_inline_klass()) {
1162 rtype = java_lang_Class::is_primary_mirror(return_type_mirror) ? T_OBJECT : T_PRIMITIVE_OBJECT;
1163 } else {
1164 rtype = T_OBJECT;
1165 }
1166
1167 InstanceKlass* klass = InstanceKlass::cast(java_lang_Class::as_Klass(mirror));
1168 Method* m = klass->method_with_idnum(slot);
1169 if (m == nullptr) {
1170 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke");
1171 }
1172 methodHandle method(THREAD, m);
1173
1174 return invoke(klass, method, receiver, override, ptypes, rtype, args, true, THREAD);
1175 }
1176
1177
1178 oop Reflection::invoke_constructor(oop constructor_mirror, objArrayHandle args, TRAPS) {
1179 oop mirror = java_lang_reflect_Constructor::clazz(constructor_mirror);
1180 int slot = java_lang_reflect_Constructor::slot(constructor_mirror);
1181 bool override = java_lang_reflect_Constructor::override(constructor_mirror) != 0;
1182 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Constructor::parameter_types(constructor_mirror)));
1183
1184 InstanceKlass* klass = InstanceKlass::cast(java_lang_Class::as_Klass(mirror));
1185 Method* m = klass->method_with_idnum(slot);
1186 if (m == nullptr) {
1187 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke");
1188 }
1189 methodHandle method(THREAD, m);
1190
1191 // Make sure klass gets initialize
1192 klass->initialize(CHECK_NULL);
1193
1194 // Create new instance (the receiver)
1195 klass->check_valid_for_instantiation(false, CHECK_NULL);
1196
1197 // Special case for factory methods
1198 if (!method->signature()->is_void_method_signature()) {
1199 assert(klass->is_inline_klass(), "inline classes must use factory methods");
1200 assert(method->name() == vmSymbols::inline_factory_name(), "wrong factory method name");
1201 Handle no_receiver; // null instead of receiver
1202 BasicType rtype;
1203 if (klass->is_hidden()) {
1204 rtype = T_OBJECT;
1205 } else {
1206 rtype = T_PRIMITIVE_OBJECT;
1207 }
1208 return invoke(klass, method, no_receiver, override, ptypes, rtype, args, false, CHECK_NULL);
1209 }
1210
1211 // main branch of code creates a non-inline object:
1212 assert(!klass->is_inline_klass(), "classic constructors are only for non-inline classes");
1213 assert(method->name() == vmSymbols::object_initializer_name(), "wrong constructor name");
1214 Handle receiver = klass->allocate_instance_handle(CHECK_NULL);
1215
1216 // Ignore result from call and return receiver
1217 invoke(klass, method, receiver, override, ptypes, T_VOID, args, false, CHECK_NULL);
1218 return receiver();
1219 }