1 /*
2 * Copyright (c) 1997, 2016, 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/systemDictionary.hpp"
28 #include "classfile/vmSymbols.hpp"
29 #include "code/codeCache.hpp"
30 #include "code/codeCacheExtensions.hpp"
31 #include "compiler/compileBroker.hpp"
32 #include "compiler/disassembler.hpp"
33 #include "gc/shared/collectedHeap.hpp"
34 #include "interpreter/interpreter.hpp"
35 #include "interpreter/interpreterRuntime.hpp"
36 #include "interpreter/linkResolver.hpp"
37 #include "interpreter/templateTable.hpp"
38 #include "logging/log.hpp"
39 #include "memory/oopFactory.hpp"
40 #include "memory/universe.inline.hpp"
41 #include "oops/constantPool.hpp"
42 #include "oops/instanceKlass.hpp"
43 #include "oops/methodData.hpp"
44 #include "oops/objArrayKlass.hpp"
45 #include "oops/objArrayOop.inline.hpp"
46 #include "oops/oop.inline.hpp"
47 #include "oops/symbol.hpp"
48 #include "oops/valueKlass.hpp"
49 #include "oops/valueArrayKlass.hpp"
50 #include "oops/valueArrayOop.hpp"
51 #include "prims/jvmtiExport.hpp"
52 #include "prims/nativeLookup.hpp"
53 #include "runtime/atomic.inline.hpp"
54 #include "runtime/biasedLocking.hpp"
55 #include "runtime/compilationPolicy.hpp"
56 #include "runtime/deoptimization.hpp"
57 #include "runtime/fieldDescriptor.hpp"
58 #include "runtime/handles.inline.hpp"
59 #include "runtime/icache.hpp"
60 #include "runtime/interfaceSupport.hpp"
61 #include "runtime/java.hpp"
62 #include "runtime/jfieldIDWorkaround.hpp"
63 #include "runtime/osThread.hpp"
64 #include "runtime/sharedRuntime.hpp"
65 #include "runtime/stubRoutines.hpp"
66 #include "runtime/synchronizer.hpp"
67 #include "runtime/threadCritical.hpp"
68 #include "utilities/events.hpp"
69 #include "utilities/globalDefinitions.hpp"
70 #ifdef COMPILER2
71 #include "opto/runtime.hpp"
72 #endif
73
74 class UnlockFlagSaver {
75 private:
76 JavaThread* _thread;
77 bool _do_not_unlock;
78 public:
79 UnlockFlagSaver(JavaThread* t) {
80 _thread = t;
81 _do_not_unlock = t->do_not_unlock_if_synchronized();
82 t->set_do_not_unlock_if_synchronized(false);
83 }
84 ~UnlockFlagSaver() {
85 _thread->set_do_not_unlock_if_synchronized(_do_not_unlock);
86 }
87 };
88
89 //------------------------------------------------------------------------------------------------------------------------
90 // State accessors
91
92 void InterpreterRuntime::set_bcp_and_mdp(address bcp, JavaThread *thread) {
93 last_frame(thread).interpreter_frame_set_bcp(bcp);
94 if (ProfileInterpreter) {
95 // ProfileTraps uses MDOs independently of ProfileInterpreter.
96 // That is why we must check both ProfileInterpreter and mdo != NULL.
97 MethodData* mdo = last_frame(thread).interpreter_frame_method()->method_data();
98 if (mdo != NULL) {
99 NEEDS_CLEANUP;
100 last_frame(thread).interpreter_frame_set_mdp(mdo->bci_to_dp(last_frame(thread).interpreter_frame_bci()));
101 }
102 }
103 }
104
105 //------------------------------------------------------------------------------------------------------------------------
106 // Constants
107
108
109 IRT_ENTRY(void, InterpreterRuntime::ldc(JavaThread* thread, bool wide))
110 // access constant pool
111 ConstantPool* pool = method(thread)->constants();
112 int index = wide ? get_index_u2(thread, Bytecodes::_ldc_w) : get_index_u1(thread, Bytecodes::_ldc);
113 constantTag tag = pool->tag_at(index);
114
115 assert (tag.is_unresolved_klass() || tag.is_klass(), "wrong ldc call");
116 Klass* klass = pool->klass_at(index, CHECK);
117 oop java_class = klass->java_mirror();
118 thread->set_vm_result(java_class);
119 IRT_END
120
121 IRT_ENTRY(void, InterpreterRuntime::resolve_ldc(JavaThread* thread, Bytecodes::Code bytecode)) {
122 assert(bytecode == Bytecodes::_fast_aldc ||
123 bytecode == Bytecodes::_fast_aldc_w, "wrong bc");
124 ResourceMark rm(thread);
125 methodHandle m (thread, method(thread));
126 Bytecode_loadconstant ldc(m, bci(thread));
127 oop result = ldc.resolve_constant(CHECK);
128 #ifdef ASSERT
129 {
130 // The bytecode wrappers aren't GC-safe so construct a new one
131 Bytecode_loadconstant ldc2(m, bci(thread));
132 oop coop = m->constants()->resolved_references()->obj_at(ldc2.cache_index());
133 assert(result == coop, "expected result for assembly code");
134 }
135 #endif
136 thread->set_vm_result(result);
137 }
138 IRT_END
139
140
141 //------------------------------------------------------------------------------------------------------------------------
142 // Allocation
143
144 IRT_ENTRY(void, InterpreterRuntime::_new(JavaThread* thread, ConstantPool* pool, int index))
145 Klass* k_oop = pool->klass_at(index, CHECK);
146 instanceKlassHandle klass (THREAD, k_oop);
147
148 // Make sure we are not instantiating an abstract klass
149 klass->check_valid_for_instantiation(true, CHECK);
150
151 // Make sure klass is initialized
152 klass->initialize(CHECK);
153
154 // At this point the class may not be fully initialized
155 // because of recursive initialization. If it is fully
156 // initialized & has_finalized is not set, we rewrite
157 // it into its fast version (Note: no locking is needed
158 // here since this is an atomic byte write and can be
159 // done more than once).
160 //
161 // Note: In case of classes with has_finalized we don't
162 // rewrite since that saves us an extra check in
163 // the fast version which then would call the
164 // slow version anyway (and do a call back into
165 // Java).
166 // If we have a breakpoint, then we don't rewrite
167 // because the _breakpoint bytecode would be lost.
168 oop obj = klass->allocate_instance(CHECK);
169 thread->set_vm_result(obj);
170 IRT_END
171
172 void copy_primitive_argument(HeapWord* addr, Handle instance, int offset, BasicType type) {
173 switch (type) {
174 case T_BOOLEAN:
175 instance()->bool_field_put(offset, (jboolean)*((int*)addr));
176 break;
177 case T_CHAR:
178 instance()->char_field_put(offset, (jchar) *((int*)addr));
179 break;
180 case T_FLOAT:
181 instance()->float_field_put(offset, (jfloat)*((float*)addr));
182 break;
183 case T_DOUBLE:
184 instance()->double_field_put(offset, (jdouble)*((double*)addr));
185 break;
186 case T_BYTE:
187 instance()->byte_field_put(offset, (jbyte)*((int*)addr));
188 break;
189 case T_SHORT:
190 instance()->short_field_put(offset, (jshort)*((int*)addr));
191 break;
192 case T_INT:
193 instance()->int_field_put(offset, (jint)*((int*)addr));
194 break;
195 case T_LONG:
196 instance()->long_field_put(offset, (jlong)*((long*)addr)); // Is it correct on 32 and 64 bits?
197 break;
198 case T_OBJECT:
199 case T_ARRAY:
200 fatal("Not supported yet");
201 break;
202 case T_VALUETYPE:
203 fatal("Should not be handled with this method");
204 break;
205 default:
206 fatal("Unsupported BasicType");
207 }
208 }
209
210 IRT_ENTRY(int, InterpreterRuntime::_vnew(JavaThread* thread, ConstantPool* pool, int index, address sp))
211 valueKlassHandle vklass_h(ValueKlass::cast(pool->pool_holder()));
212 vklass_h->initialize(THREAD);
213 methodHandle factory_h(vklass_h->factory_method());
214
215 #ifdef DEBUG
216 assert(pool->tag_at(index).value() == JVM_CONSTANT_Methodref, "Invalid CP reference for factory");
217 int class_index = pool->uncached_klass_ref_index_at(index);
218 Symbol* classname = pool->klass_name_at(class_index);
219 assert(classname == vklass_h->name(), "klass mismatch in value factory description");
220 int method_index = pool->uncached_name_and_type_ref_index_at(index);
221 int method_name_index = pool->name_ref_index_at(method_index);
222 Symbol* method_name = pool->name_ref_at(method_name_index);
223 assert(method_name == factory_h->name(), "factory name mismatch");
224 #endif
225
226 if (factory_h() == NULL) {
227 THROW_0(vmSymbols::java_lang_InstantiationException());
228 }
229 int nargs = factory_h->constMethod()->valuefactory_parameter_mapping_length();
230 HeapWord* arg_ptr = (HeapWord*)sp;
231 int cursor = 0;
232 // allocate instance
233 instanceOop value = vklass_h->allocate_instance(CHECK_0);
234 Handle value_h = Handle(THREAD, value);
235 assert(value->is_value(), "Sanity check");
236 // Initializing fields
237 for (int i = nargs - 1 ; i >= 0 ; i--) {
238 int index = factory_h->constMethod()->valuefactory_parameter_mapping_start()[i].data.field_index;
239 int offset = vklass_h->field_offset(index);
240 Symbol* signature = vklass_h->field_signature(index);
241 BasicType type = vmSymbols::signature_type(signature);
242 if (type == T_OBJECT || type == T_ARRAY) {
243 #if 0
244 // Horrible hack to test oop map iterator...
245 value_h()->obj_field_put(offset, *(oop*)&arg_ptr[cursor]);
246 #else
247 fatal("Objects and arrays not supported in value types yet");
248 #endif
249 } else if (type == T_VALUETYPE) {
250 ResourceMark rm(THREAD);
251 Symbol* field_klassname = SignatureStream(signature, false).as_symbol(CHECK_0);
252 // It would be better to have another way to retrieve the field klass
253 // than doing a lookup in the SystemDictionary
254 Klass* field_k = SystemDictionary::resolve_or_null(field_klassname,
255 Handle(vklass_h->class_loader()), Handle(vklass_h->protection_domain()), CHECK_0);
256 if (field_k == NULL) {
257 ResourceMark rm(THREAD);
258 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), vklass_h->field_name(index)->as_C_string());
259 }
260 ValueKlass* field_vk = ValueKlass::cast(field_k);
261 int size = field_vk->layout_helper_size_in_bytes(field_vk->layout_helper());
262 memcpy(((char*)(oopDesc*)value_h()) + offset,
263 (char*)(oopDesc*)*(oop*)&arg_ptr[cursor] + field_vk->first_field_offset(),
264 size - field_vk->first_field_offset());
265 } else {
266 copy_primitive_argument(&arg_ptr[cursor], value_h, offset, type);
267 }
268 if (type == T_LONG || type == T_DOUBLE) {
269 cursor += 2;
270 } else {
271 cursor += 1;
272 }
273 }
274 thread->set_vm_result(value);
275 // Note: don't forget to pop arguments out of the stack before pushing
276 // the result of the value creation
277 return cursor * Interpreter::stackElementSize;
278 IRT_END
279
280 IRT_ENTRY(void, InterpreterRuntime::vbox(JavaThread* thread, ConstantPool* pool, int index, oopDesc* value))
281 guarantee(value, "Value Type NULL");
282
283 // Since the verifier is probably disabled, a few extra type check
284 Klass* target_klass = pool->klass_at(index, CHECK);
285 if (target_klass->is_value()) {
286 THROW_MSG(vmSymbols::java_lang_ClassCastException(), "vbox target is value type");
287 }
288 Klass* klass = value->klass();
289 if (!klass->is_value()) {
290 THROW_MSG(vmSymbols::java_lang_ClassCastException(), "vbox not from value type");
291 }
292 ValueKlass* vtklass = ValueKlass::cast(klass);
293 if (vtklass->derive_value_type_klass() != target_klass) {
294 THROW_MSG(vmSymbols::java_lang_ClassCastException(), "vbox target is not derive value type box");
295 }
296
297 oop boxed = vtklass->derive_value_type_copy(Handle(value),
298 instanceKlassHandle(target_klass),
299 CHECK);
300 thread->set_vm_result(boxed);
301 IRT_END
302
303 IRT_ENTRY(void, InterpreterRuntime::vunbox(JavaThread* thread, ConstantPool* pool, int index, oopDesc* obj))
304 if (obj == NULL) {
305 THROW(vmSymbols::java_lang_NullPointerException());
306 }
307 Klass* target_klass = pool->klass_at(index, CHECK);
308 if (!target_klass->is_value()) {
309 THROW_MSG(vmSymbols::java_lang_ClassCastException(), "vunbox target is not value type");
310 }
311 Klass* klass = obj->klass();
312 if ((!klass->is_instance_klass()) || klass->is_value()) {
313 THROW_MSG(vmSymbols::java_lang_ClassCastException(), "vunbox source is not an instance");
314 }
315 InstanceKlass* dvtklass = InstanceKlass::cast(klass)->derive_value_type_klass();
316 if (dvtklass != target_klass) {
317 THROW_MSG(vmSymbols::java_lang_ClassCastException(), "vunbox target is not derive value type");
318 }
319 oop value = ValueKlass::cast(dvtklass)->derive_value_type_copy(Handle(obj),
320 instanceKlassHandle(target_klass),
321 CHECK);
322 thread->set_vm_result(value);
323 IRT_END
324
325 IRT_ENTRY(void, InterpreterRuntime::qgetfield(JavaThread* thread, oopDesc* value, ConstantPoolCacheEntry* cp_entry))
326 Handle value_h(value);
327 assert(cp_entry->is_valuetype(), "Safety check");
328 instanceKlassHandle klass_h(cp_entry->f1_as_klass());
329 int offset = cp_entry->f2_as_index();
330
331 fieldDescriptor fd;
332 klass_h->find_field_from_offset(offset, false, &fd);
333 Symbol* field_signature = fd.signature();
334 Symbol* field_klassname = SignatureStream(field_signature, false).as_symbol(CHECK);
335 // It would be better to have another way to retrieve the field klass
336 // than doing a lookup in the SystemDictionary
337 Klass* field_k = SystemDictionary::resolve_or_null(field_klassname,
338 Handle(klass_h->class_loader()), Handle(klass_h->protection_domain()), CHECK);
339 if (field_k == NULL) {
340 ResourceMark rm(THREAD);
341 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), fd.name()->as_C_string());
342 }
343 valueKlassHandle field_vklass_h(field_k);
344 // allocate instance
345 instanceOop res = field_vklass_h->allocate_instance(CHECK);
346 // copy value
347 int size = field_vklass_h->layout_helper_size_in_bytes(field_vklass_h->layout_helper());
348 field_vklass_h->value_store(((char*)(oopDesc*)value_h()) + offset,
349 ((char*)(oopDesc*)res) + field_vklass_h->first_field_offset(),true, false);
350 thread->set_vm_result(res);
351 IRT_END
352
353 IRT_ENTRY(void, InterpreterRuntime::qputfield(JavaThread* thread, oopDesc* obj, oopDesc* value, ConstantPoolCacheEntry* cp_entry))
354 Handle value_h(value);
355 Handle obj_h(obj);
356 assert(cp_entry->is_valuetype(), "Safety check");
357 instanceKlassHandle klass_h(cp_entry->f1_as_klass());
358 int offset = cp_entry->f2_as_index();
359
360 fieldDescriptor fd;
361 klass_h->find_field_from_offset(offset, false, &fd);
362 Symbol* field_signature = fd.signature();
363 Symbol* field_klassname = SignatureStream(field_signature, false).as_symbol(CHECK);
364 // It would be better to have another way to retrieve the field klass
365 // than doing a lookup in the SystemDictionary
366 Klass* field_k = SystemDictionary::resolve_or_null(field_klassname,
367 Handle(klass_h->class_loader()), Handle(klass_h->protection_domain()), CHECK);
368 if (field_k == NULL) {
369 ResourceMark rm(THREAD);
370 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), fd.name()->as_C_string());
371 }
372 valueKlassHandle field_vklass_h(field_k);
373 // copy value
374 int size = field_vklass_h->layout_helper_size_in_bytes(field_vklass_h->layout_helper());
375 field_vklass_h->value_store(((char*)(oopDesc*)value_h()) + field_vklass_h->first_field_offset(),
376 ((char*)(oopDesc*)obj_h()) + cp_entry->f2_as_offset(), true, false);
377 IRT_END
378
379 IRT_ENTRY(void, InterpreterRuntime::newarray(JavaThread* thread, BasicType type, jint size))
380 oop obj = oopFactory::new_typeArray(type, size, CHECK);
381 thread->set_vm_result(obj);
382 IRT_END
383
384
385 IRT_ENTRY(void, InterpreterRuntime::anewarray(JavaThread* thread, ConstantPool* pool, int index, jint size))
386 // Note: no oopHandle for pool & klass needed since they are not used
387 // anymore after new_objArray() and no GC can happen before.
388 // (This may have to change if this code changes!)
389 Klass* klass = pool->klass_at(index, CHECK);
390 objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK);
391 thread->set_vm_result(obj);
392
393 IRT_END
394 IRT_ENTRY(void, InterpreterRuntime::vnewarray(JavaThread* thread, ConstantPool* pool, int index, jint size))
395 Klass* klass = pool->klass_at(index, CHECK);
396 arrayOop obj = oopFactory::new_valueArray(klass, size, CHECK);
397 thread->set_vm_result(obj);
398 IRT_END
399
400 IRT_ENTRY(void, InterpreterRuntime::value_array_load(JavaThread* thread, arrayOopDesc* array, int index))
401 Klass* klass = array->klass();
402 assert(klass->is_valueArray_klass() || klass->is_objArray_klass(), "expected value or object array oop");
403
404 if (klass->is_objArray_klass()) {
405 thread->set_vm_result(((objArrayOop) array)->obj_at(index));
406 }
407 else {
408 // Early prototype: we don't have valorind support...just allocate aref and copy
409 ValueArrayKlass* vaklass = ValueArrayKlass::cast(klass);
410 valueKlassHandle vklass_h(vaklass->element_klass());;
411 arrayHandle ah(array);
412 instanceOop value_holder = vklass_h->allocate_instance(CHECK);
413 void* src = ((valueArrayOop)ah())->value_at_addr(index, vaklass->layout_helper());
414 vklass_h->value_store_to_oop(src, value_holder, true);
415 thread->set_vm_result(value_holder);
416 }
417 IRT_END
418
419 IRT_ENTRY(void, InterpreterRuntime::value_array_store(JavaThread* thread, arrayOopDesc* array, int index, void* val))
420 Klass* klass = array->klass();
421 assert(klass->is_valueArray_klass() || klass->is_objArray_klass(), "expected value or object array oop");
422 if (klass->is_objArray_klass()) {
423 ((objArrayOop) array)->obj_at_put(index, (oop)val);
424 }
425 else {
426 valueArrayOop varray = (valueArrayOop)array;
427 ValueArrayKlass* vaklass = ValueArrayKlass::cast(klass);
428 ValueKlass* vklass = vaklass->element_klass();
429 const int lh = vaklass->layout_helper();
430 vklass->value_store_from_oop((oop) val, varray->value_at_addr(index, lh), true, false);
431 }
432 IRT_END
433
434
435 IRT_ENTRY(void, InterpreterRuntime::multianewarray(JavaThread* thread, jint* first_size_address))
436 // We may want to pass in more arguments - could make this slightly faster
437 ConstantPool* constants = method(thread)->constants();
438 int i = get_index_u2(thread, Bytecodes::_multianewarray);
439 Klass* klass = constants->klass_at(i, CHECK);
440 int nof_dims = number_of_dimensions(thread);
441 assert(klass->is_klass(), "not a class");
442 assert(nof_dims >= 1, "multianewarray rank must be nonzero");
443
444 // We must create an array of jints to pass to multi_allocate.
445 ResourceMark rm(thread);
446 const int small_dims = 10;
447 jint dim_array[small_dims];
448 jint *dims = &dim_array[0];
449 if (nof_dims > small_dims) {
450 dims = (jint*) NEW_RESOURCE_ARRAY(jint, nof_dims);
451 }
452 for (int index = 0; index < nof_dims; index++) {
453 // offset from first_size_address is addressed as local[index]
454 int n = Interpreter::local_offset_in_bytes(index)/jintSize;
455 dims[index] = first_size_address[n];
456 }
457 oop obj = ArrayKlass::cast(klass)->multi_allocate(nof_dims, dims, CHECK);
458 thread->set_vm_result(obj);
459 IRT_END
460
461
462 IRT_ENTRY(void, InterpreterRuntime::register_finalizer(JavaThread* thread, oopDesc* obj))
463 assert(obj->is_oop(), "must be a valid oop");
464 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
465 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
466 IRT_END
467
468
469 // Quicken instance-of and check-cast bytecodes
470 IRT_ENTRY(void, InterpreterRuntime::quicken_io_cc(JavaThread* thread))
471 // Force resolving; quicken the bytecode
472 int which = get_index_u2(thread, Bytecodes::_checkcast);
473 ConstantPool* cpool = method(thread)->constants();
474 // We'd expect to assert that we're only here to quicken bytecodes, but in a multithreaded
475 // program we might have seen an unquick'd bytecode in the interpreter but have another
476 // thread quicken the bytecode before we get here.
477 // assert( cpool->tag_at(which).is_unresolved_klass(), "should only come here to quicken bytecodes" );
478 Klass* klass = cpool->klass_at(which, CHECK);
479 thread->set_vm_result_2(klass);
480 IRT_END
481
482
483 //------------------------------------------------------------------------------------------------------------------------
484 // Exceptions
485
486 void InterpreterRuntime::note_trap_inner(JavaThread* thread, int reason,
487 methodHandle trap_method, int trap_bci, TRAPS) {
488 if (trap_method.not_null()) {
489 MethodData* trap_mdo = trap_method->method_data();
490 if (trap_mdo == NULL) {
491 Method::build_interpreter_method_data(trap_method, THREAD);
492 if (HAS_PENDING_EXCEPTION) {
493 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())),
494 "we expect only an OOM error here");
495 CLEAR_PENDING_EXCEPTION;
496 }
497 trap_mdo = trap_method->method_data();
498 // and fall through...
499 }
500 if (trap_mdo != NULL) {
501 // Update per-method count of trap events. The interpreter
502 // is updating the MDO to simulate the effect of compiler traps.
503 Deoptimization::update_method_data_from_interpreter(trap_mdo, trap_bci, reason);
504 }
505 }
506 }
507
508 // Assume the compiler is (or will be) interested in this event.
509 // If necessary, create an MDO to hold the information, and record it.
510 void InterpreterRuntime::note_trap(JavaThread* thread, int reason, TRAPS) {
511 assert(ProfileTraps, "call me only if profiling");
512 methodHandle trap_method(thread, method(thread));
513 int trap_bci = trap_method->bci_from(bcp(thread));
514 note_trap_inner(thread, reason, trap_method, trap_bci, THREAD);
515 }
516
517 #ifdef CC_INTERP
518 // As legacy note_trap, but we have more arguments.
519 IRT_ENTRY(void, InterpreterRuntime::note_trap(JavaThread* thread, int reason, Method *method, int trap_bci))
520 methodHandle trap_method(method);
521 note_trap_inner(thread, reason, trap_method, trap_bci, THREAD);
522 IRT_END
523
524 // Class Deoptimization is not visible in BytecodeInterpreter, so we need a wrapper
525 // for each exception.
526 void InterpreterRuntime::note_nullCheck_trap(JavaThread* thread, Method *method, int trap_bci)
527 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_null_check, method, trap_bci); }
528 void InterpreterRuntime::note_div0Check_trap(JavaThread* thread, Method *method, int trap_bci)
529 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_div0_check, method, trap_bci); }
530 void InterpreterRuntime::note_rangeCheck_trap(JavaThread* thread, Method *method, int trap_bci)
531 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_range_check, method, trap_bci); }
532 void InterpreterRuntime::note_classCheck_trap(JavaThread* thread, Method *method, int trap_bci)
533 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_class_check, method, trap_bci); }
534 void InterpreterRuntime::note_arrayCheck_trap(JavaThread* thread, Method *method, int trap_bci)
535 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_array_check, method, trap_bci); }
536 #endif // CC_INTERP
537
538
539 static Handle get_preinitialized_exception(Klass* k, TRAPS) {
540 // get klass
541 InstanceKlass* klass = InstanceKlass::cast(k);
542 assert(klass->is_initialized(),
543 "this klass should have been initialized during VM initialization");
544 // create instance - do not call constructor since we may have no
545 // (java) stack space left (should assert constructor is empty)
546 Handle exception;
547 oop exception_oop = klass->allocate_instance(CHECK_(exception));
548 exception = Handle(THREAD, exception_oop);
549 if (StackTraceInThrowable) {
550 java_lang_Throwable::fill_in_stack_trace(exception);
551 }
552 return exception;
553 }
554
555 // Special handling for stack overflow: since we don't have any (java) stack
556 // space left we use the pre-allocated & pre-initialized StackOverflowError
557 // klass to create an stack overflow error instance. We do not call its
558 // constructor for the same reason (it is empty, anyway).
559 IRT_ENTRY(void, InterpreterRuntime::throw_StackOverflowError(JavaThread* thread))
560 Handle exception = get_preinitialized_exception(
561 SystemDictionary::StackOverflowError_klass(),
562 CHECK);
563 // Increment counter for hs_err file reporting
564 Atomic::inc(&Exceptions::_stack_overflow_errors);
565 THROW_HANDLE(exception);
566 IRT_END
567
568 IRT_ENTRY(address, InterpreterRuntime::check_ReservedStackAccess_annotated_methods(JavaThread* thread))
569 frame fr = thread->last_frame();
570 assert(fr.is_java_frame(), "Must be a Java frame");
571 frame activation = SharedRuntime::look_for_reserved_stack_annotated_method(thread, fr);
572 if (activation.sp() != NULL) {
573 thread->disable_stack_reserved_zone();
574 thread->set_reserved_stack_activation((address)activation.unextended_sp());
575 }
576 return (address)activation.sp();
577 IRT_END
578
579 IRT_ENTRY(void, InterpreterRuntime::throw_delayed_StackOverflowError(JavaThread* thread))
580 Handle exception = get_preinitialized_exception(
581 SystemDictionary::StackOverflowError_klass(),
582 CHECK);
583 java_lang_Throwable::set_message(exception(),
584 Universe::delayed_stack_overflow_error_message());
585 // Increment counter for hs_err file reporting
586 Atomic::inc(&Exceptions::_stack_overflow_errors);
587 THROW_HANDLE(exception);
588 IRT_END
589
590 IRT_ENTRY(void, InterpreterRuntime::create_exception(JavaThread* thread, char* name, char* message))
591 // lookup exception klass
592 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK);
593 if (ProfileTraps) {
594 if (s == vmSymbols::java_lang_ArithmeticException()) {
595 note_trap(thread, Deoptimization::Reason_div0_check, CHECK);
596 } else if (s == vmSymbols::java_lang_NullPointerException()) {
597 note_trap(thread, Deoptimization::Reason_null_check, CHECK);
598 }
599 }
600 // create exception
601 Handle exception = Exceptions::new_exception(thread, s, message);
602 thread->set_vm_result(exception());
603 IRT_END
604
605
606 IRT_ENTRY(void, InterpreterRuntime::create_klass_exception(JavaThread* thread, char* name, oopDesc* obj))
607 ResourceMark rm(thread);
608 const char* klass_name = obj->klass()->external_name();
609 // lookup exception klass
610 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK);
611 if (ProfileTraps) {
612 note_trap(thread, Deoptimization::Reason_class_check, CHECK);
613 }
614 // create exception, with klass name as detail message
615 Handle exception = Exceptions::new_exception(thread, s, klass_name);
616 thread->set_vm_result(exception());
617 IRT_END
618
619
620 IRT_ENTRY(void, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index))
621 char message[jintAsStringSize];
622 // lookup exception klass
623 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK);
624 if (ProfileTraps) {
625 note_trap(thread, Deoptimization::Reason_range_check, CHECK);
626 }
627 // create exception
628 sprintf(message, "%d", index);
629 THROW_MSG(s, message);
630 IRT_END
631
632 IRT_ENTRY(void, InterpreterRuntime::throw_ClassCastException(
633 JavaThread* thread, oopDesc* obj))
634
635 ResourceMark rm(thread);
636 char* message = SharedRuntime::generate_class_cast_message(
637 thread, obj->klass()->external_name());
638
639 if (ProfileTraps) {
640 note_trap(thread, Deoptimization::Reason_class_check, CHECK);
641 }
642
643 // create exception
644 THROW_MSG(vmSymbols::java_lang_ClassCastException(), message);
645 IRT_END
646
647 // exception_handler_for_exception(...) returns the continuation address,
648 // the exception oop (via TLS) and sets the bci/bcp for the continuation.
649 // The exception oop is returned to make sure it is preserved over GC (it
650 // is only on the stack if the exception was thrown explicitly via athrow).
651 // During this operation, the expression stack contains the values for the
652 // bci where the exception happened. If the exception was propagated back
653 // from a call, the expression stack contains the values for the bci at the
654 // invoke w/o arguments (i.e., as if one were inside the call).
655 IRT_ENTRY(address, InterpreterRuntime::exception_handler_for_exception(JavaThread* thread, oopDesc* exception))
656
657 Handle h_exception(thread, exception);
658 methodHandle h_method (thread, method(thread));
659 constantPoolHandle h_constants(thread, h_method->constants());
660 bool should_repeat;
661 int handler_bci;
662 int current_bci = bci(thread);
663
664 if (thread->frames_to_pop_failed_realloc() > 0) {
665 // Allocation of scalar replaced object used in this frame
666 // failed. Unconditionally pop the frame.
667 thread->dec_frames_to_pop_failed_realloc();
668 thread->set_vm_result(h_exception());
669 // If the method is synchronized we already unlocked the monitor
670 // during deoptimization so the interpreter needs to skip it when
671 // the frame is popped.
672 thread->set_do_not_unlock_if_synchronized(true);
673 #ifdef CC_INTERP
674 return (address) -1;
675 #else
676 return Interpreter::remove_activation_entry();
677 #endif
678 }
679
680 // Need to do this check first since when _do_not_unlock_if_synchronized
681 // is set, we don't want to trigger any classloading which may make calls
682 // into java, or surprisingly find a matching exception handler for bci 0
683 // since at this moment the method hasn't been "officially" entered yet.
684 if (thread->do_not_unlock_if_synchronized()) {
685 ResourceMark rm;
686 assert(current_bci == 0, "bci isn't zero for do_not_unlock_if_synchronized");
687 thread->set_vm_result(exception);
688 #ifdef CC_INTERP
689 return (address) -1;
690 #else
691 return Interpreter::remove_activation_entry();
692 #endif
693 }
694
695 do {
696 should_repeat = false;
697
698 // assertions
699 #ifdef ASSERT
700 assert(h_exception.not_null(), "NULL exceptions should be handled by athrow");
701 assert(h_exception->is_oop(), "just checking");
702 // Check that exception is a subclass of Throwable, otherwise we have a VerifyError
703 if (!(h_exception->is_a(SystemDictionary::Throwable_klass()))) {
704 if (ExitVMOnVerifyError) vm_exit(-1);
705 ShouldNotReachHere();
706 }
707 #endif
708
709 // tracing
710 if (log_is_enabled(Info, exceptions)) {
711 ResourceMark rm(thread);
712 stringStream tempst;
713 tempst.print("interpreter method <%s>\n"
714 " at bci %d for thread " INTPTR_FORMAT,
715 h_method->print_value_string(), current_bci, p2i(thread));
716 Exceptions::log_exception(h_exception, tempst);
717 }
718 // Don't go paging in something which won't be used.
719 // else if (extable->length() == 0) {
720 // // disabled for now - interpreter is not using shortcut yet
721 // // (shortcut is not to call runtime if we have no exception handlers)
722 // // warning("performance bug: should not call runtime if method has no exception handlers");
723 // }
724 // for AbortVMOnException flag
725 Exceptions::debug_check_abort(h_exception);
726
727 // exception handler lookup
728 KlassHandle h_klass(THREAD, h_exception->klass());
729 handler_bci = Method::fast_exception_handler_bci_for(h_method, h_klass, current_bci, THREAD);
730 if (HAS_PENDING_EXCEPTION) {
731 // We threw an exception while trying to find the exception handler.
732 // Transfer the new exception to the exception handle which will
733 // be set into thread local storage, and do another lookup for an
734 // exception handler for this exception, this time starting at the
735 // BCI of the exception handler which caused the exception to be
736 // thrown (bug 4307310).
737 h_exception = Handle(THREAD, PENDING_EXCEPTION);
738 CLEAR_PENDING_EXCEPTION;
739 if (handler_bci >= 0) {
740 current_bci = handler_bci;
741 should_repeat = true;
742 }
743 }
744 } while (should_repeat == true);
745
746 #if INCLUDE_JVMCI
747 if (EnableJVMCI && h_method->method_data() != NULL) {
748 ResourceMark rm(thread);
749 ProfileData* pdata = h_method->method_data()->allocate_bci_to_data(current_bci, NULL);
750 if (pdata != NULL && pdata->is_BitData()) {
751 BitData* bit_data = (BitData*) pdata;
752 bit_data->set_exception_seen();
753 }
754 }
755 #endif
756
757 // notify JVMTI of an exception throw; JVMTI will detect if this is a first
758 // time throw or a stack unwinding throw and accordingly notify the debugger
759 if (JvmtiExport::can_post_on_exceptions()) {
760 JvmtiExport::post_exception_throw(thread, h_method(), bcp(thread), h_exception());
761 }
762
763 #ifdef CC_INTERP
764 address continuation = (address)(intptr_t) handler_bci;
765 #else
766 address continuation = NULL;
767 #endif
768 address handler_pc = NULL;
769 if (handler_bci < 0 || !thread->reguard_stack((address) &continuation)) {
770 // Forward exception to callee (leaving bci/bcp untouched) because (a) no
771 // handler in this method, or (b) after a stack overflow there is not yet
772 // enough stack space available to reprotect the stack.
773 #ifndef CC_INTERP
774 continuation = Interpreter::remove_activation_entry();
775 #endif
776 // Count this for compilation purposes
777 h_method->interpreter_throwout_increment(THREAD);
778 } else {
779 // handler in this method => change bci/bcp to handler bci/bcp and continue there
780 handler_pc = h_method->code_base() + handler_bci;
781 #ifndef CC_INTERP
782 set_bcp_and_mdp(handler_pc, thread);
783 continuation = Interpreter::dispatch_table(vtos)[*handler_pc];
784 #endif
785 }
786 // notify debugger of an exception catch
787 // (this is good for exceptions caught in native methods as well)
788 if (JvmtiExport::can_post_on_exceptions()) {
789 JvmtiExport::notice_unwind_due_to_exception(thread, h_method(), handler_pc, h_exception(), (handler_pc != NULL));
790 }
791
792 thread->set_vm_result(h_exception());
793 return continuation;
794 IRT_END
795
796
797 IRT_ENTRY(void, InterpreterRuntime::throw_pending_exception(JavaThread* thread))
798 assert(thread->has_pending_exception(), "must only ne called if there's an exception pending");
799 // nothing to do - eventually we should remove this code entirely (see comments @ call sites)
800 IRT_END
801
802
803 IRT_ENTRY(void, InterpreterRuntime::throw_AbstractMethodError(JavaThread* thread))
804 THROW(vmSymbols::java_lang_AbstractMethodError());
805 IRT_END
806
807
808 IRT_ENTRY(void, InterpreterRuntime::throw_IncompatibleClassChangeError(JavaThread* thread))
809 THROW(vmSymbols::java_lang_IncompatibleClassChangeError());
810 IRT_END
811
812
813 //------------------------------------------------------------------------------------------------------------------------
814 // Fields
815 //
816
817 void InterpreterRuntime::resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode) {
818 Thread* THREAD = thread;
819 // resolve field
820 fieldDescriptor info;
821 constantPoolHandle pool(thread, method(thread)->constants());
822 bool is_put = (bytecode == Bytecodes::_putfield || bytecode == Bytecodes::_nofast_putfield ||
823 bytecode == Bytecodes::_putstatic);
824 bool is_static = (bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic);
825
826 {
827 JvmtiHideSingleStepping jhss(thread);
828 LinkResolver::resolve_field_access(info, pool, get_index_u2_cpcache(thread, bytecode),
829 bytecode, CHECK);
830 } // end JvmtiHideSingleStepping
831
832 // check if link resolution caused cpCache to be updated
833 ConstantPoolCacheEntry* cp_cache_entry = cache_entry(thread);
834 if (cp_cache_entry->is_resolved(bytecode)) return;
835
836 // compute auxiliary field attributes
837 TosState state = as_TosState(info.field_type());
838
839 // We need to delay resolving put instructions on final fields
840 // until we actually invoke one. This is required so we throw
841 // exceptions at the correct place. If we do not resolve completely
842 // in the current pass, leaving the put_code set to zero will
843 // cause the next put instruction to reresolve.
844 Bytecodes::Code put_code = (Bytecodes::Code)0;
845
846 // We also need to delay resolving getstatic instructions until the
847 // class is intitialized. This is required so that access to the static
848 // field will call the initialization function every time until the class
849 // is completely initialized ala. in 2.17.5 in JVM Specification.
850 InstanceKlass* klass = InstanceKlass::cast(info.field_holder());
851 bool uninitialized_static = ((bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic) &&
852 !klass->is_initialized());
853 Bytecodes::Code get_code = (Bytecodes::Code)0;
854
855 if (!uninitialized_static) {
856 get_code = ((is_static) ? Bytecodes::_getstatic : Bytecodes::_getfield);
857 if (is_put || !info.access_flags().is_final()) {
858 put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_putfield);
859 }
860 }
861
862 cp_cache_entry->set_field(
863 get_code,
864 put_code,
865 info.field_holder(),
866 info.index(),
867 info.offset(),
868 state,
869 info.access_flags().is_final(),
870 info.access_flags().is_volatile(),
871 pool->pool_holder()
872 );
873 }
874
875
876 //------------------------------------------------------------------------------------------------------------------------
877 // Synchronization
878 //
879 // The interpreter's synchronization code is factored out so that it can
880 // be shared by method invocation and synchronized blocks.
881 //%note synchronization_3
882
883 //%note monitor_1
884 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorenter(JavaThread* thread, BasicObjectLock* elem))
885 #ifdef ASSERT
886 thread->last_frame().interpreter_frame_verify_monitor(elem);
887 #endif
888 if (PrintBiasedLockingStatistics) {
889 Atomic::inc(BiasedLocking::slow_path_entry_count_addr());
890 }
891 Handle h_obj(thread, elem->obj());
892 assert(Universe::heap()->is_in_reserved_or_null(h_obj()),
893 "must be NULL or an object");
894 if (UseBiasedLocking) {
895 // Retry fast entry if bias is revoked to avoid unnecessary inflation
896 ObjectSynchronizer::fast_enter(h_obj, elem->lock(), true, CHECK);
897 } else {
898 ObjectSynchronizer::slow_enter(h_obj, elem->lock(), CHECK);
899 }
900 assert(Universe::heap()->is_in_reserved_or_null(elem->obj()),
901 "must be NULL or an object");
902 #ifdef ASSERT
903 thread->last_frame().interpreter_frame_verify_monitor(elem);
904 #endif
905 IRT_END
906
907
908 //%note monitor_1
909 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorexit(JavaThread* thread, BasicObjectLock* elem))
910 #ifdef ASSERT
911 thread->last_frame().interpreter_frame_verify_monitor(elem);
912 #endif
913 Handle h_obj(thread, elem->obj());
914 assert(Universe::heap()->is_in_reserved_or_null(h_obj()),
915 "must be NULL or an object");
916 if (elem == NULL || h_obj()->is_unlocked()) {
917 THROW(vmSymbols::java_lang_IllegalMonitorStateException());
918 }
919 ObjectSynchronizer::slow_exit(h_obj(), elem->lock(), thread);
920 // Free entry. This must be done here, since a pending exception might be installed on
921 // exit. If it is not cleared, the exception handling code will try to unlock the monitor again.
922 elem->set_obj(NULL);
923 #ifdef ASSERT
924 thread->last_frame().interpreter_frame_verify_monitor(elem);
925 #endif
926 IRT_END
927
928
929 IRT_ENTRY(void, InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* thread))
930 THROW(vmSymbols::java_lang_IllegalMonitorStateException());
931 IRT_END
932
933
934 IRT_ENTRY(void, InterpreterRuntime::new_illegal_monitor_state_exception(JavaThread* thread))
935 // Returns an illegal exception to install into the current thread. The
936 // pending_exception flag is cleared so normal exception handling does not
937 // trigger. Any current installed exception will be overwritten. This
938 // method will be called during an exception unwind.
939
940 assert(!HAS_PENDING_EXCEPTION, "no pending exception");
941 Handle exception(thread, thread->vm_result());
942 assert(exception() != NULL, "vm result should be set");
943 thread->set_vm_result(NULL); // clear vm result before continuing (may cause memory leaks and assert failures)
944 if (!exception->is_a(SystemDictionary::ThreadDeath_klass())) {
945 exception = get_preinitialized_exception(
946 SystemDictionary::IllegalMonitorStateException_klass(),
947 CATCH);
948 }
949 thread->set_vm_result(exception());
950 IRT_END
951
952
953 //------------------------------------------------------------------------------------------------------------------------
954 // Invokes
955
956 IRT_ENTRY(Bytecodes::Code, InterpreterRuntime::get_original_bytecode_at(JavaThread* thread, Method* method, address bcp))
957 return method->orig_bytecode_at(method->bci_from(bcp));
958 IRT_END
959
960 IRT_ENTRY(void, InterpreterRuntime::set_original_bytecode_at(JavaThread* thread, Method* method, address bcp, Bytecodes::Code new_code))
961 method->set_orig_bytecode_at(method->bci_from(bcp), new_code);
962 IRT_END
963
964 IRT_ENTRY(void, InterpreterRuntime::_breakpoint(JavaThread* thread, Method* method, address bcp))
965 JvmtiExport::post_raw_breakpoint(thread, method, bcp);
966 IRT_END
967
968 void InterpreterRuntime::resolve_invoke(JavaThread* thread, Bytecodes::Code bytecode) {
969 Thread* THREAD = thread;
970 // extract receiver from the outgoing argument list if necessary
971 Handle receiver(thread, NULL);
972 if (bytecode == Bytecodes::_invokevirtual ||
973 bytecode == Bytecodes::_invokeinterface ||
974 bytecode == Bytecodes::_invokedirect) {
975 ResourceMark rm(thread);
976 methodHandle m (thread, method(thread));
977 Bytecode_invoke call(m, bci(thread));
978 Symbol* signature = call.signature();
979 receiver = Handle(thread,
980 thread->last_frame().interpreter_callee_receiver(signature));
981 assert(Universe::heap()->is_in_reserved_or_null(receiver()),
982 "sanity check");
983 assert(receiver.is_null() ||
984 !Universe::heap()->is_in_reserved(receiver->klass()),
985 "sanity check");
986 }
987
988 // resolve method
989 CallInfo info;
990 constantPoolHandle pool(thread, method(thread)->constants());
991
992 {
993 JvmtiHideSingleStepping jhss(thread);
994 LinkResolver::resolve_invoke(info, receiver, pool,
995 get_index_u2_cpcache(thread, bytecode), bytecode,
996 CHECK);
997 if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
998 int retry_count = 0;
999 while (info.resolved_method()->is_old()) {
1000 // It is very unlikely that method is redefined more than 100 times
1001 // in the middle of resolve. If it is looping here more than 100 times
1002 // means then there could be a bug here.
1003 guarantee((retry_count++ < 100),
1004 "Could not resolve to latest version of redefined method");
1005 // method is redefined in the middle of resolve so re-try.
1006 LinkResolver::resolve_invoke(info, receiver, pool,
1007 get_index_u2_cpcache(thread, bytecode), bytecode,
1008 CHECK);
1009 }
1010 }
1011 } // end JvmtiHideSingleStepping
1012
1013 assert(!(bytecode == Bytecodes::_invokedirect && info.call_kind() != CallInfo::direct_call),
1014 "the target of a invokedirect bytecode must be a direct call");
1015
1016 // check if link resolution caused cpCache to be updated
1017 ConstantPoolCacheEntry* cp_cache_entry = cache_entry(thread);
1018 if (cp_cache_entry->is_resolved(bytecode)) return;
1019
1020 #ifdef ASSERT
1021 if (bytecode == Bytecodes::_invokeinterface) {
1022 if (info.resolved_method()->method_holder() ==
1023 SystemDictionary::Object_klass()) {
1024 // NOTE: THIS IS A FIX FOR A CORNER CASE in the JVM spec
1025 // (see also CallInfo::set_interface for details)
1026 assert(info.call_kind() == CallInfo::vtable_call ||
1027 info.call_kind() == CallInfo::direct_call, "");
1028 methodHandle rm = info.resolved_method();
1029 assert(rm->is_final() || info.has_vtable_index(),
1030 "should have been set already");
1031 } else if (!info.resolved_method()->has_itable_index()) {
1032 // Resolved something like CharSequence.toString. Use vtable not itable.
1033 assert(info.call_kind() != CallInfo::itable_call, "");
1034 } else {
1035 // Setup itable entry
1036 assert(info.call_kind() == CallInfo::itable_call, "");
1037 int index = info.resolved_method()->itable_index();
1038 assert(info.itable_index() == index, "");
1039 }
1040 } else {
1041 assert(info.call_kind() == CallInfo::direct_call ||
1042 info.call_kind() == CallInfo::vtable_call, "");
1043 }
1044 #endif
1045 switch (info.call_kind()) {
1046 case CallInfo::direct_call:
1047 cp_cache_entry->set_direct_call(
1048 bytecode,
1049 info.resolved_method());
1050 break;
1051 case CallInfo::vtable_call:
1052 cp_cache_entry->set_vtable_call(
1053 bytecode,
1054 info.resolved_method(),
1055 info.vtable_index());
1056 break;
1057 case CallInfo::itable_call:
1058 cp_cache_entry->set_itable_call(
1059 bytecode,
1060 info.resolved_method(),
1061 info.itable_index());
1062 break;
1063 default: ShouldNotReachHere();
1064 }
1065 }
1066
1067
1068 // First time execution: Resolve symbols, create a permanent MethodType object.
1069 void InterpreterRuntime::resolve_invokehandle(JavaThread* thread) {
1070 Thread* THREAD = thread;
1071 const Bytecodes::Code bytecode = Bytecodes::_invokehandle;
1072
1073 // resolve method
1074 CallInfo info;
1075 constantPoolHandle pool(thread, method(thread)->constants());
1076 {
1077 JvmtiHideSingleStepping jhss(thread);
1078 LinkResolver::resolve_invoke(info, Handle(), pool,
1079 get_index_u2_cpcache(thread, bytecode), bytecode,
1080 CHECK);
1081 } // end JvmtiHideSingleStepping
1082
1083 ConstantPoolCacheEntry* cp_cache_entry = cache_entry(thread);
1084 cp_cache_entry->set_method_handle(pool, info);
1085 }
1086
1087 // First time execution: Resolve symbols, create a permanent CallSite object.
1088 void InterpreterRuntime::resolve_invokedynamic(JavaThread* thread) {
1089 Thread* THREAD = thread;
1090 const Bytecodes::Code bytecode = Bytecodes::_invokedynamic;
1091
1092 //TO DO: consider passing BCI to Java.
1093 // int caller_bci = method(thread)->bci_from(bcp(thread));
1094
1095 // resolve method
1096 CallInfo info;
1097 constantPoolHandle pool(thread, method(thread)->constants());
1098 int index = get_index_u4(thread, bytecode);
1099 {
1100 JvmtiHideSingleStepping jhss(thread);
1101 LinkResolver::resolve_invoke(info, Handle(), pool,
1102 index, bytecode, CHECK);
1103 } // end JvmtiHideSingleStepping
1104
1105 ConstantPoolCacheEntry* cp_cache_entry = pool->invokedynamic_cp_cache_entry_at(index);
1106 cp_cache_entry->set_dynamic_call(pool, info);
1107 }
1108
1109 // This function is the interface to the assembly code. It returns the resolved
1110 // cpCache entry. This doesn't safepoint, but the helper routines safepoint.
1111 // This function will check for redefinition!
1112 IRT_ENTRY(void, InterpreterRuntime::resolve_from_cache(JavaThread* thread, Bytecodes::Code bytecode)) {
1113 switch (bytecode) {
1114 case Bytecodes::_getstatic:
1115 case Bytecodes::_putstatic:
1116 case Bytecodes::_getfield:
1117 case Bytecodes::_putfield:
1118 case Bytecodes::_vgetfield:
1119 resolve_get_put(thread, bytecode);
1120 break;
1121 case Bytecodes::_invokevirtual:
1122 case Bytecodes::_invokedirect:
1123 case Bytecodes::_invokespecial:
1124 case Bytecodes::_invokestatic:
1125 case Bytecodes::_invokeinterface:
1126 resolve_invoke(thread, bytecode);
1127 break;
1128 case Bytecodes::_invokehandle:
1129 resolve_invokehandle(thread);
1130 break;
1131 case Bytecodes::_invokedynamic:
1132 resolve_invokedynamic(thread);
1133 break;
1134 default:
1135 fatal("unexpected bytecode: %s", Bytecodes::name(bytecode));
1136 break;
1137 }
1138 }
1139 IRT_END
1140
1141 //------------------------------------------------------------------------------------------------------------------------
1142 // Miscellaneous
1143
1144
1145 nmethod* InterpreterRuntime::frequency_counter_overflow(JavaThread* thread, address branch_bcp) {
1146 nmethod* nm = frequency_counter_overflow_inner(thread, branch_bcp);
1147 assert(branch_bcp != NULL || nm == NULL, "always returns null for non OSR requests");
1148 if (branch_bcp != NULL && nm != NULL) {
1149 // This was a successful request for an OSR nmethod. Because
1150 // frequency_counter_overflow_inner ends with a safepoint check,
1151 // nm could have been unloaded so look it up again. It's unsafe
1152 // to examine nm directly since it might have been freed and used
1153 // for something else.
1154 frame fr = thread->last_frame();
1155 Method* method = fr.interpreter_frame_method();
1156 int bci = method->bci_from(fr.interpreter_frame_bcp());
1157 nm = method->lookup_osr_nmethod_for(bci, CompLevel_none, false);
1158 }
1159 #ifndef PRODUCT
1160 if (TraceOnStackReplacement) {
1161 if (nm != NULL) {
1162 tty->print("OSR entry @ pc: " INTPTR_FORMAT ": ", p2i(nm->osr_entry()));
1163 nm->print();
1164 }
1165 }
1166 #endif
1167 return nm;
1168 }
1169
1170 IRT_ENTRY(nmethod*,
1171 InterpreterRuntime::frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp))
1172 // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized
1173 // flag, in case this method triggers classloading which will call into Java.
1174 UnlockFlagSaver fs(thread);
1175
1176 frame fr = thread->last_frame();
1177 assert(fr.is_interpreted_frame(), "must come from interpreter");
1178 methodHandle method(thread, fr.interpreter_frame_method());
1179 const int branch_bci = branch_bcp != NULL ? method->bci_from(branch_bcp) : InvocationEntryBci;
1180 const int bci = branch_bcp != NULL ? method->bci_from(fr.interpreter_frame_bcp()) : InvocationEntryBci;
1181
1182 assert(!HAS_PENDING_EXCEPTION, "Should not have any exceptions pending");
1183 nmethod* osr_nm = CompilationPolicy::policy()->event(method, method, branch_bci, bci, CompLevel_none, NULL, thread);
1184 assert(!HAS_PENDING_EXCEPTION, "Event handler should not throw any exceptions");
1185
1186 if (osr_nm != NULL) {
1187 // We may need to do on-stack replacement which requires that no
1188 // monitors in the activation are biased because their
1189 // BasicObjectLocks will need to migrate during OSR. Force
1190 // unbiasing of all monitors in the activation now (even though
1191 // the OSR nmethod might be invalidated) because we don't have a
1192 // safepoint opportunity later once the migration begins.
1193 if (UseBiasedLocking) {
1194 ResourceMark rm;
1195 GrowableArray<Handle>* objects_to_revoke = new GrowableArray<Handle>();
1196 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end();
1197 kptr < fr.interpreter_frame_monitor_begin();
1198 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) {
1199 if( kptr->obj() != NULL ) {
1200 objects_to_revoke->append(Handle(THREAD, kptr->obj()));
1201 }
1202 }
1203 BiasedLocking::revoke(objects_to_revoke);
1204 }
1205 }
1206 return osr_nm;
1207 IRT_END
1208
1209 IRT_LEAF(jint, InterpreterRuntime::bcp_to_di(Method* method, address cur_bcp))
1210 assert(ProfileInterpreter, "must be profiling interpreter");
1211 int bci = method->bci_from(cur_bcp);
1212 MethodData* mdo = method->method_data();
1213 if (mdo == NULL) return 0;
1214 return mdo->bci_to_di(bci);
1215 IRT_END
1216
1217 IRT_ENTRY(void, InterpreterRuntime::profile_method(JavaThread* thread))
1218 // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized
1219 // flag, in case this method triggers classloading which will call into Java.
1220 UnlockFlagSaver fs(thread);
1221
1222 assert(ProfileInterpreter, "must be profiling interpreter");
1223 frame fr = thread->last_frame();
1224 assert(fr.is_interpreted_frame(), "must come from interpreter");
1225 methodHandle method(thread, fr.interpreter_frame_method());
1226 Method::build_interpreter_method_data(method, THREAD);
1227 if (HAS_PENDING_EXCEPTION) {
1228 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here");
1229 CLEAR_PENDING_EXCEPTION;
1230 // and fall through...
1231 }
1232 IRT_END
1233
1234
1235 #ifdef ASSERT
1236 IRT_LEAF(void, InterpreterRuntime::verify_mdp(Method* method, address bcp, address mdp))
1237 assert(ProfileInterpreter, "must be profiling interpreter");
1238
1239 MethodData* mdo = method->method_data();
1240 assert(mdo != NULL, "must not be null");
1241
1242 int bci = method->bci_from(bcp);
1243
1244 address mdp2 = mdo->bci_to_dp(bci);
1245 if (mdp != mdp2) {
1246 ResourceMark rm;
1247 ResetNoHandleMark rnm; // In a LEAF entry.
1248 HandleMark hm;
1249 tty->print_cr("FAILED verify : actual mdp %p expected mdp %p @ bci %d", mdp, mdp2, bci);
1250 int current_di = mdo->dp_to_di(mdp);
1251 int expected_di = mdo->dp_to_di(mdp2);
1252 tty->print_cr(" actual di %d expected di %d", current_di, expected_di);
1253 int expected_approx_bci = mdo->data_at(expected_di)->bci();
1254 int approx_bci = -1;
1255 if (current_di >= 0) {
1256 approx_bci = mdo->data_at(current_di)->bci();
1257 }
1258 tty->print_cr(" actual bci is %d expected bci %d", approx_bci, expected_approx_bci);
1259 mdo->print_on(tty);
1260 method->print_codes();
1261 }
1262 assert(mdp == mdp2, "wrong mdp");
1263 IRT_END
1264 #endif // ASSERT
1265
1266 IRT_ENTRY(void, InterpreterRuntime::update_mdp_for_ret(JavaThread* thread, int return_bci))
1267 assert(ProfileInterpreter, "must be profiling interpreter");
1268 ResourceMark rm(thread);
1269 HandleMark hm(thread);
1270 frame fr = thread->last_frame();
1271 assert(fr.is_interpreted_frame(), "must come from interpreter");
1272 MethodData* h_mdo = fr.interpreter_frame_method()->method_data();
1273
1274 // Grab a lock to ensure atomic access to setting the return bci and
1275 // the displacement. This can block and GC, invalidating all naked oops.
1276 MutexLocker ml(RetData_lock);
1277
1278 // ProfileData is essentially a wrapper around a derived oop, so we
1279 // need to take the lock before making any ProfileData structures.
1280 ProfileData* data = h_mdo->data_at(h_mdo->dp_to_di(fr.interpreter_frame_mdp()));
1281 RetData* rdata = data->as_RetData();
1282 address new_mdp = rdata->fixup_ret(return_bci, h_mdo);
1283 fr.interpreter_frame_set_mdp(new_mdp);
1284 IRT_END
1285
1286 IRT_ENTRY(MethodCounters*, InterpreterRuntime::build_method_counters(JavaThread* thread, Method* m))
1287 MethodCounters* mcs = Method::build_method_counters(m, thread);
1288 if (HAS_PENDING_EXCEPTION) {
1289 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here");
1290 CLEAR_PENDING_EXCEPTION;
1291 }
1292 return mcs;
1293 IRT_END
1294
1295
1296 IRT_ENTRY(void, InterpreterRuntime::at_safepoint(JavaThread* thread))
1297 // We used to need an explict preserve_arguments here for invoke bytecodes. However,
1298 // stack traversal automatically takes care of preserving arguments for invoke, so
1299 // this is no longer needed.
1300
1301 // IRT_END does an implicit safepoint check, hence we are guaranteed to block
1302 // if this is called during a safepoint
1303
1304 if (JvmtiExport::should_post_single_step()) {
1305 // We are called during regular safepoints and when the VM is
1306 // single stepping. If any thread is marked for single stepping,
1307 // then we may have JVMTI work to do.
1308 JvmtiExport::at_single_stepping_point(thread, method(thread), bcp(thread));
1309 }
1310 IRT_END
1311
1312 IRT_ENTRY(void, InterpreterRuntime::post_field_access(JavaThread *thread, oopDesc* obj,
1313 ConstantPoolCacheEntry *cp_entry))
1314
1315 // check the access_flags for the field in the klass
1316
1317 InstanceKlass* ik = InstanceKlass::cast(cp_entry->f1_as_klass());
1318 int index = cp_entry->field_index();
1319 if ((ik->field_access_flags(index) & JVM_ACC_FIELD_ACCESS_WATCHED) == 0) return;
1320
1321 bool is_static = (obj == NULL);
1322 HandleMark hm(thread);
1323
1324 Handle h_obj;
1325 if (!is_static) {
1326 // non-static field accessors have an object, but we need a handle
1327 h_obj = Handle(thread, obj);
1328 }
1329 instanceKlassHandle h_cp_entry_f1(thread, (Klass*)cp_entry->f1_as_klass());
1330 jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_cp_entry_f1, cp_entry->f2_as_index(), is_static);
1331 JvmtiExport::post_field_access(thread, method(thread), bcp(thread), h_cp_entry_f1, h_obj, fid);
1332 IRT_END
1333
1334 IRT_ENTRY(void, InterpreterRuntime::post_field_modification(JavaThread *thread,
1335 oopDesc* obj, ConstantPoolCacheEntry *cp_entry, jvalue *value))
1336
1337 Klass* k = (Klass*)cp_entry->f1_as_klass();
1338
1339 // check the access_flags for the field in the klass
1340 InstanceKlass* ik = InstanceKlass::cast(k);
1341 int index = cp_entry->field_index();
1342 // bail out if field modifications are not watched
1343 if ((ik->field_access_flags(index) & JVM_ACC_FIELD_MODIFICATION_WATCHED) == 0) return;
1344
1345 char sig_type = '\0';
1346
1347 switch(cp_entry->flag_state()) {
1348 case btos: sig_type = 'Z'; break;
1349 case ctos: sig_type = 'C'; break;
1350 case stos: sig_type = 'S'; break;
1351 case itos: sig_type = 'I'; break;
1352 case ftos: sig_type = 'F'; break;
1353 case atos: sig_type = 'L'; break;
1354 case ltos: sig_type = 'J'; break;
1355 case dtos: sig_type = 'D'; break;
1356 default: ShouldNotReachHere(); return;
1357 }
1358 bool is_static = (obj == NULL);
1359
1360 HandleMark hm(thread);
1361 instanceKlassHandle h_klass(thread, k);
1362 jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_klass, cp_entry->f2_as_index(), is_static);
1363 jvalue fvalue;
1364 #ifdef _LP64
1365 fvalue = *value;
1366 #else
1367 // Long/double values are stored unaligned and also noncontiguously with
1368 // tagged stacks. We can't just do a simple assignment even in the non-
1369 // J/D cases because a C++ compiler is allowed to assume that a jvalue is
1370 // 8-byte aligned, and interpreter stack slots are only 4-byte aligned.
1371 // We assume that the two halves of longs/doubles are stored in interpreter
1372 // stack slots in platform-endian order.
1373 jlong_accessor u;
1374 jint* newval = (jint*)value;
1375 u.words[0] = newval[0];
1376 u.words[1] = newval[Interpreter::stackElementWords]; // skip if tag
1377 fvalue.j = u.long_value;
1378 #endif // _LP64
1379
1380 Handle h_obj;
1381 if (!is_static) {
1382 // non-static field accessors have an object, but we need a handle
1383 h_obj = Handle(thread, obj);
1384 }
1385
1386 JvmtiExport::post_raw_field_modification(thread, method(thread), bcp(thread), h_klass, h_obj,
1387 fid, sig_type, &fvalue);
1388 IRT_END
1389
1390 IRT_ENTRY(void, InterpreterRuntime::post_method_entry(JavaThread *thread))
1391 JvmtiExport::post_method_entry(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread));
1392 IRT_END
1393
1394
1395 IRT_ENTRY(void, InterpreterRuntime::post_method_exit(JavaThread *thread))
1396 JvmtiExport::post_method_exit(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread));
1397 IRT_END
1398
1399 IRT_LEAF(int, InterpreterRuntime::interpreter_contains(address pc))
1400 {
1401 return (Interpreter::contains(pc) ? 1 : 0);
1402 }
1403 IRT_END
1404
1405
1406 // Implementation of SignatureHandlerLibrary
1407
1408 #ifndef SHARING_FAST_NATIVE_FINGERPRINTS
1409 // Dummy definition (else normalization method is defined in CPU
1410 // dependant code)
1411 uint64_t InterpreterRuntime::normalize_fast_native_fingerprint(uint64_t fingerprint) {
1412 return fingerprint;
1413 }
1414 #endif
1415
1416 address SignatureHandlerLibrary::set_handler_blob() {
1417 BufferBlob* handler_blob = BufferBlob::create("native signature handlers", blob_size);
1418 if (handler_blob == NULL) {
1419 return NULL;
1420 }
1421 address handler = handler_blob->code_begin();
1422 _handler_blob = handler_blob;
1423 _handler = handler;
1424 return handler;
1425 }
1426
1427 void SignatureHandlerLibrary::initialize() {
1428 if (_fingerprints != NULL) {
1429 return;
1430 }
1431 if (set_handler_blob() == NULL) {
1432 vm_exit_out_of_memory(blob_size, OOM_MALLOC_ERROR, "native signature handlers");
1433 }
1434
1435 BufferBlob* bb = BufferBlob::create("Signature Handler Temp Buffer",
1436 SignatureHandlerLibrary::buffer_size);
1437 _buffer = bb->code_begin();
1438
1439 _fingerprints = new(ResourceObj::C_HEAP, mtCode)GrowableArray<uint64_t>(32, true);
1440 _handlers = new(ResourceObj::C_HEAP, mtCode)GrowableArray<address>(32, true);
1441 }
1442
1443 address SignatureHandlerLibrary::set_handler(CodeBuffer* buffer) {
1444 address handler = _handler;
1445 int insts_size = buffer->pure_insts_size();
1446 if (handler + insts_size > _handler_blob->code_end()) {
1447 // get a new handler blob
1448 handler = set_handler_blob();
1449 }
1450 if (handler != NULL) {
1451 memcpy(handler, buffer->insts_begin(), insts_size);
1452 pd_set_handler(handler);
1453 ICache::invalidate_range(handler, insts_size);
1454 _handler = handler + insts_size;
1455 }
1456 CodeCacheExtensions::handle_generated_handler(handler, buffer->name(), _handler);
1457 return handler;
1458 }
1459
1460 void SignatureHandlerLibrary::add(const methodHandle& method) {
1461 if (method->signature_handler() == NULL) {
1462 // use slow signature handler if we can't do better
1463 int handler_index = -1;
1464 // check if we can use customized (fast) signature handler
1465 if (UseFastSignatureHandlers && CodeCacheExtensions::support_fast_signature_handlers() && method->size_of_parameters() <= Fingerprinter::max_size_of_parameters) {
1466 // use customized signature handler
1467 MutexLocker mu(SignatureHandlerLibrary_lock);
1468 // make sure data structure is initialized
1469 initialize();
1470 // lookup method signature's fingerprint
1471 uint64_t fingerprint = Fingerprinter(method).fingerprint();
1472 // allow CPU dependant code to optimize the fingerprints for the fast handler
1473 fingerprint = InterpreterRuntime::normalize_fast_native_fingerprint(fingerprint);
1474 handler_index = _fingerprints->find(fingerprint);
1475 // create handler if necessary
1476 if (handler_index < 0) {
1477 ResourceMark rm;
1478 ptrdiff_t align_offset = (address)
1479 round_to((intptr_t)_buffer, CodeEntryAlignment) - (address)_buffer;
1480 CodeBuffer buffer((address)(_buffer + align_offset),
1481 SignatureHandlerLibrary::buffer_size - align_offset);
1482 if (!CodeCacheExtensions::support_dynamic_code()) {
1483 // we need a name for the signature (for lookups or saving)
1484 const int SYMBOL_SIZE = 50;
1485 char *symbolName = NEW_RESOURCE_ARRAY(char, SYMBOL_SIZE);
1486 // support for named signatures
1487 jio_snprintf(symbolName, SYMBOL_SIZE,
1488 "native_" UINT64_FORMAT, fingerprint);
1489 buffer.set_name(symbolName);
1490 }
1491 InterpreterRuntime::SignatureHandlerGenerator(method, &buffer).generate(fingerprint);
1492 // copy into code heap
1493 address handler = set_handler(&buffer);
1494 if (handler == NULL) {
1495 // use slow signature handler (without memorizing it in the fingerprints)
1496 } else {
1497 // debugging suppport
1498 if (PrintSignatureHandlers && (handler != Interpreter::slow_signature_handler())) {
1499 ttyLocker ttyl;
1500 tty->cr();
1501 tty->print_cr("argument handler #%d for: %s %s (fingerprint = " UINT64_FORMAT ", %d bytes generated)",
1502 _handlers->length(),
1503 (method->is_static() ? "static" : "receiver"),
1504 method->name_and_sig_as_C_string(),
1505 fingerprint,
1506 buffer.insts_size());
1507 if (buffer.insts_size() > 0) {
1508 // buffer may be empty for pregenerated handlers
1509 Disassembler::decode(handler, handler + buffer.insts_size());
1510 }
1511 #ifndef PRODUCT
1512 address rh_begin = Interpreter::result_handler(method()->result_type());
1513 if (CodeCache::contains(rh_begin)) {
1514 // else it might be special platform dependent values
1515 tty->print_cr(" --- associated result handler ---");
1516 address rh_end = rh_begin;
1517 while (*(int*)rh_end != 0) {
1518 rh_end += sizeof(int);
1519 }
1520 Disassembler::decode(rh_begin, rh_end);
1521 } else {
1522 tty->print_cr(" associated result handler: " PTR_FORMAT, p2i(rh_begin));
1523 }
1524 #endif
1525 }
1526 // add handler to library
1527 _fingerprints->append(fingerprint);
1528 _handlers->append(handler);
1529 // set handler index
1530 assert(_fingerprints->length() == _handlers->length(), "sanity check");
1531 handler_index = _fingerprints->length() - 1;
1532 }
1533 }
1534 // Set handler under SignatureHandlerLibrary_lock
1535 if (handler_index < 0) {
1536 // use generic signature handler
1537 method->set_signature_handler(Interpreter::slow_signature_handler());
1538 } else {
1539 // set handler
1540 method->set_signature_handler(_handlers->at(handler_index));
1541 }
1542 } else {
1543 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());
1544 // use generic signature handler
1545 method->set_signature_handler(Interpreter::slow_signature_handler());
1546 }
1547 }
1548 #ifdef ASSERT
1549 int handler_index = -1;
1550 int fingerprint_index = -2;
1551 {
1552 // '_handlers' and '_fingerprints' are 'GrowableArray's and are NOT synchronized
1553 // in any way if accessed from multiple threads. To avoid races with another
1554 // thread which may change the arrays in the above, mutex protected block, we
1555 // have to protect this read access here with the same mutex as well!
1556 MutexLocker mu(SignatureHandlerLibrary_lock);
1557 if (_handlers != NULL) {
1558 handler_index = _handlers->find(method->signature_handler());
1559 uint64_t fingerprint = Fingerprinter(method).fingerprint();
1560 fingerprint = InterpreterRuntime::normalize_fast_native_fingerprint(fingerprint);
1561 fingerprint_index = _fingerprints->find(fingerprint);
1562 }
1563 }
1564 assert(method->signature_handler() == Interpreter::slow_signature_handler() ||
1565 handler_index == fingerprint_index, "sanity check");
1566 #endif // ASSERT
1567 }
1568
1569 void SignatureHandlerLibrary::add(uint64_t fingerprint, address handler) {
1570 int handler_index = -1;
1571 // use customized signature handler
1572 MutexLocker mu(SignatureHandlerLibrary_lock);
1573 // make sure data structure is initialized
1574 initialize();
1575 fingerprint = InterpreterRuntime::normalize_fast_native_fingerprint(fingerprint);
1576 handler_index = _fingerprints->find(fingerprint);
1577 // create handler if necessary
1578 if (handler_index < 0) {
1579 if (PrintSignatureHandlers && (handler != Interpreter::slow_signature_handler())) {
1580 tty->cr();
1581 tty->print_cr("argument handler #%d at " PTR_FORMAT " for fingerprint " UINT64_FORMAT,
1582 _handlers->length(),
1583 p2i(handler),
1584 fingerprint);
1585 }
1586 _fingerprints->append(fingerprint);
1587 _handlers->append(handler);
1588 } else {
1589 if (PrintSignatureHandlers) {
1590 tty->cr();
1591 tty->print_cr("duplicate argument handler #%d for fingerprint " UINT64_FORMAT "(old: " PTR_FORMAT ", new : " PTR_FORMAT ")",
1592 _handlers->length(),
1593 fingerprint,
1594 p2i(_handlers->at(handler_index)),
1595 p2i(handler));
1596 }
1597 }
1598 }
1599
1600
1601 BufferBlob* SignatureHandlerLibrary::_handler_blob = NULL;
1602 address SignatureHandlerLibrary::_handler = NULL;
1603 GrowableArray<uint64_t>* SignatureHandlerLibrary::_fingerprints = NULL;
1604 GrowableArray<address>* SignatureHandlerLibrary::_handlers = NULL;
1605 address SignatureHandlerLibrary::_buffer = NULL;
1606
1607
1608 IRT_ENTRY(void, InterpreterRuntime::prepare_native_call(JavaThread* thread, Method* method))
1609 methodHandle m(thread, method);
1610 assert(m->is_native(), "sanity check");
1611 // lookup native function entry point if it doesn't exist
1612 bool in_base_library;
1613 if (!m->has_native_function()) {
1614 NativeLookup::lookup(m, in_base_library, CHECK);
1615 }
1616 // make sure signature handler is installed
1617 SignatureHandlerLibrary::add(m);
1618 // The interpreter entry point checks the signature handler first,
1619 // before trying to fetch the native entry point and klass mirror.
1620 // We must set the signature handler last, so that multiple processors
1621 // preparing the same method will be sure to see non-null entry & mirror.
1622 IRT_END
1623
1624 #if defined(IA32) || defined(AMD64) || defined(ARM)
1625 IRT_LEAF(void, InterpreterRuntime::popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address))
1626 if (src_address == dest_address) {
1627 return;
1628 }
1629 ResetNoHandleMark rnm; // In a LEAF entry.
1630 HandleMark hm;
1631 ResourceMark rm;
1632 frame fr = thread->last_frame();
1633 assert(fr.is_interpreted_frame(), "");
1634 jint bci = fr.interpreter_frame_bci();
1635 methodHandle mh(thread, fr.interpreter_frame_method());
1636 Bytecode_invoke invoke(mh, bci);
1637 ArgumentSizeComputer asc(invoke.signature());
1638 int size_of_arguments = (asc.size() + (invoke.has_receiver() ? 1 : 0)); // receiver
1639 Copy::conjoint_jbytes(src_address, dest_address,
1640 size_of_arguments * Interpreter::stackElementSize);
1641 IRT_END
1642 #endif
1643
1644 #if INCLUDE_JVMTI
1645 // This is a support of the JVMTI PopFrame interface.
1646 // Make sure it is an invokestatic of a polymorphic intrinsic that has a member_name argument
1647 // and return it as a vm_result so that it can be reloaded in the list of invokestatic parameters.
1648 // The member_name argument is a saved reference (in local#0) to the member_name.
1649 // For backward compatibility with some JDK versions (7, 8) it can also be a direct method handle.
1650 // FIXME: remove DMH case after j.l.i.InvokerBytecodeGenerator code shape is updated.
1651 IRT_ENTRY(void, InterpreterRuntime::member_name_arg_or_null(JavaThread* thread, address member_name,
1652 Method* method, address bcp))
1653 Bytecodes::Code code = Bytecodes::code_at(method, bcp);
1654 if (code != Bytecodes::_invokestatic) {
1655 return;
1656 }
1657 ConstantPool* cpool = method->constants();
1658 int cp_index = Bytes::get_native_u2(bcp + 1) + ConstantPool::CPCACHE_INDEX_TAG;
1659 Symbol* cname = cpool->klass_name_at(cpool->klass_ref_index_at(cp_index));
1660 Symbol* mname = cpool->name_ref_at(cp_index);
1661
1662 if (MethodHandles::has_member_arg(cname, mname)) {
1663 oop member_name_oop = (oop) member_name;
1664 if (java_lang_invoke_DirectMethodHandle::is_instance(member_name_oop)) {
1665 // FIXME: remove after j.l.i.InvokerBytecodeGenerator code shape is updated.
1666 member_name_oop = java_lang_invoke_DirectMethodHandle::member(member_name_oop);
1667 }
1668 thread->set_vm_result(member_name_oop);
1669 } else {
1670 thread->set_vm_result(NULL);
1671 }
1672 IRT_END
1673 #endif // INCLUDE_JVMTI