interpreter_common.cc revision 7b078e8c04f3e1451dbdd18543c8b9692b5b067e 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "interpreter_common.h"
18
19#include "field_helper.h"
20#include "mirror/array-inl.h"
21
22namespace art {
23namespace interpreter {
24
25void ThrowNullPointerExceptionFromInterpreter(const ShadowFrame& shadow_frame) {
26  ThrowNullPointerExceptionFromDexPC(shadow_frame.GetCurrentLocationForThrow());
27}
28
29template<FindFieldType find_type, Primitive::Type field_type, bool do_access_check>
30bool DoFieldGet(Thread* self, ShadowFrame& shadow_frame, const Instruction* inst,
31                uint16_t inst_data) {
32  const bool is_static = (find_type == StaticObjectRead) || (find_type == StaticPrimitiveRead);
33  const uint32_t field_idx = is_static ? inst->VRegB_21c() : inst->VRegC_22c();
34  ArtField* f = FindFieldFromCode<find_type, do_access_check>(field_idx, shadow_frame.GetMethod(), self,
35                                                              Primitive::ComponentSize(field_type));
36  if (UNLIKELY(f == nullptr)) {
37    CHECK(self->IsExceptionPending());
38    return false;
39  }
40  Object* obj;
41  if (is_static) {
42    obj = f->GetDeclaringClass();
43  } else {
44    obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data));
45    if (UNLIKELY(obj == nullptr)) {
46      ThrowNullPointerExceptionForFieldAccess(shadow_frame.GetCurrentLocationForThrow(), f, true);
47      return false;
48    }
49  }
50  f->GetDeclaringClass()->AssertInitializedOrInitializingInThread(self);
51  // Report this field access to instrumentation if needed.
52  instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation();
53  if (UNLIKELY(instrumentation->HasFieldReadListeners())) {
54    Object* this_object = f->IsStatic() ? nullptr : obj;
55    instrumentation->FieldReadEvent(self, this_object, shadow_frame.GetMethod(),
56                                    shadow_frame.GetDexPC(), f);
57  }
58  uint32_t vregA = is_static ? inst->VRegA_21c(inst_data) : inst->VRegA_22c(inst_data);
59  switch (field_type) {
60    case Primitive::kPrimBoolean:
61      shadow_frame.SetVReg(vregA, f->GetBoolean(obj));
62      break;
63    case Primitive::kPrimByte:
64      shadow_frame.SetVReg(vregA, f->GetByte(obj));
65      break;
66    case Primitive::kPrimChar:
67      shadow_frame.SetVReg(vregA, f->GetChar(obj));
68      break;
69    case Primitive::kPrimShort:
70      shadow_frame.SetVReg(vregA, f->GetShort(obj));
71      break;
72    case Primitive::kPrimInt:
73      shadow_frame.SetVReg(vregA, f->GetInt(obj));
74      break;
75    case Primitive::kPrimLong:
76      shadow_frame.SetVRegLong(vregA, f->GetLong(obj));
77      break;
78    case Primitive::kPrimNot:
79      shadow_frame.SetVRegReference(vregA, f->GetObject(obj));
80      break;
81    default:
82      LOG(FATAL) << "Unreachable: " << field_type;
83  }
84  return true;
85}
86
87// Explicitly instantiate all DoFieldGet functions.
88#define EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL(_find_type, _field_type, _do_check) \
89  template bool DoFieldGet<_find_type, _field_type, _do_check>(Thread* self, \
90                                                               ShadowFrame& shadow_frame, \
91                                                               const Instruction* inst, \
92                                                               uint16_t inst_data)
93
94#define EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(_find_type, _field_type)  \
95    EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL(_find_type, _field_type, false);  \
96    EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL(_find_type, _field_type, true);
97
98// iget-XXX
99EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimBoolean);
100EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimByte);
101EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimChar);
102EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimShort);
103EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimInt);
104EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimLong);
105EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstanceObjectRead, Primitive::kPrimNot);
106
107// sget-XXX
108EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimBoolean);
109EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimByte);
110EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimChar);
111EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimShort);
112EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimInt);
113EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimLong);
114EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticObjectRead, Primitive::kPrimNot);
115
116#undef EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL
117#undef EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL
118
119// Handles iget-quick, iget-wide-quick and iget-object-quick instructions.
120// Returns true on success, otherwise throws an exception and returns false.
121template<Primitive::Type field_type>
122bool DoIGetQuick(ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data) {
123  Object* obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data));
124  if (UNLIKELY(obj == nullptr)) {
125    // We lost the reference to the field index so we cannot get a more
126    // precised exception message.
127    ThrowNullPointerExceptionFromDexPC(shadow_frame.GetCurrentLocationForThrow());
128    return false;
129  }
130  MemberOffset field_offset(inst->VRegC_22c());
131  // Report this field access to instrumentation if needed. Since we only have the offset of
132  // the field from the base of the object, we need to look for it first.
133  instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation();
134  if (UNLIKELY(instrumentation->HasFieldReadListeners())) {
135    ArtField* f = ArtField::FindInstanceFieldWithOffset(obj->GetClass(),
136                                                        field_offset.Uint32Value());
137    DCHECK(f != nullptr);
138    DCHECK(!f->IsStatic());
139    instrumentation->FieldReadEvent(Thread::Current(), obj, shadow_frame.GetMethod(),
140                                    shadow_frame.GetDexPC(), f);
141  }
142  // Note: iget-x-quick instructions are only for non-volatile fields.
143  const uint32_t vregA = inst->VRegA_22c(inst_data);
144  switch (field_type) {
145    case Primitive::kPrimInt:
146      shadow_frame.SetVReg(vregA, static_cast<int32_t>(obj->GetField32(field_offset)));
147      break;
148    case Primitive::kPrimLong:
149      shadow_frame.SetVRegLong(vregA, static_cast<int64_t>(obj->GetField64(field_offset)));
150      break;
151    case Primitive::kPrimNot:
152      shadow_frame.SetVRegReference(vregA, obj->GetFieldObject<mirror::Object>(field_offset));
153      break;
154    default:
155      LOG(FATAL) << "Unreachable: " << field_type;
156  }
157  return true;
158}
159
160// Explicitly instantiate all DoIGetQuick functions.
161#define EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(_field_type) \
162  template bool DoIGetQuick<_field_type>(ShadowFrame& shadow_frame, const Instruction* inst, \
163                                         uint16_t inst_data)
164
165EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimInt);    // iget-quick.
166EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimLong);   // iget-wide-quick.
167EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimNot);    // iget-object-quick.
168#undef EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL
169
170template<Primitive::Type field_type>
171static JValue GetFieldValue(const ShadowFrame& shadow_frame, uint32_t vreg)
172    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
173  JValue field_value;
174  switch (field_type) {
175    case Primitive::kPrimBoolean:
176      field_value.SetZ(static_cast<uint8_t>(shadow_frame.GetVReg(vreg)));
177      break;
178    case Primitive::kPrimByte:
179      field_value.SetB(static_cast<int8_t>(shadow_frame.GetVReg(vreg)));
180      break;
181    case Primitive::kPrimChar:
182      field_value.SetC(static_cast<uint16_t>(shadow_frame.GetVReg(vreg)));
183      break;
184    case Primitive::kPrimShort:
185      field_value.SetS(static_cast<int16_t>(shadow_frame.GetVReg(vreg)));
186      break;
187    case Primitive::kPrimInt:
188      field_value.SetI(shadow_frame.GetVReg(vreg));
189      break;
190    case Primitive::kPrimLong:
191      field_value.SetJ(shadow_frame.GetVRegLong(vreg));
192      break;
193    case Primitive::kPrimNot:
194      field_value.SetL(shadow_frame.GetVRegReference(vreg));
195      break;
196    default:
197      LOG(FATAL) << "Unreachable: " << field_type;
198      break;
199  }
200  return field_value;
201}
202
203template<FindFieldType find_type, Primitive::Type field_type, bool do_access_check,
204         bool transaction_active>
205bool DoFieldPut(Thread* self, const ShadowFrame& shadow_frame, const Instruction* inst,
206                uint16_t inst_data) {
207  bool do_assignability_check = do_access_check;
208  bool is_static = (find_type == StaticObjectWrite) || (find_type == StaticPrimitiveWrite);
209  uint32_t field_idx = is_static ? inst->VRegB_21c() : inst->VRegC_22c();
210  ArtField* f = FindFieldFromCode<find_type, do_access_check>(field_idx, shadow_frame.GetMethod(), self,
211                                                              Primitive::ComponentSize(field_type));
212  if (UNLIKELY(f == nullptr)) {
213    CHECK(self->IsExceptionPending());
214    return false;
215  }
216  Object* obj;
217  if (is_static) {
218    obj = f->GetDeclaringClass();
219  } else {
220    obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data));
221    if (UNLIKELY(obj == nullptr)) {
222      ThrowNullPointerExceptionForFieldAccess(shadow_frame.GetCurrentLocationForThrow(),
223                                              f, false);
224      return false;
225    }
226  }
227  f->GetDeclaringClass()->AssertInitializedOrInitializingInThread(self);
228  uint32_t vregA = is_static ? inst->VRegA_21c(inst_data) : inst->VRegA_22c(inst_data);
229  // Report this field access to instrumentation if needed. Since we only have the offset of
230  // the field from the base of the object, we need to look for it first.
231  instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation();
232  if (UNLIKELY(instrumentation->HasFieldWriteListeners())) {
233    JValue field_value = GetFieldValue<field_type>(shadow_frame, vregA);
234    Object* this_object = f->IsStatic() ? nullptr : obj;
235    instrumentation->FieldWriteEvent(self, this_object, shadow_frame.GetMethod(),
236                                     shadow_frame.GetDexPC(), f, field_value);
237  }
238  switch (field_type) {
239    case Primitive::kPrimBoolean:
240      f->SetBoolean<transaction_active>(obj, shadow_frame.GetVReg(vregA));
241      break;
242    case Primitive::kPrimByte:
243      f->SetByte<transaction_active>(obj, shadow_frame.GetVReg(vregA));
244      break;
245    case Primitive::kPrimChar:
246      f->SetChar<transaction_active>(obj, shadow_frame.GetVReg(vregA));
247      break;
248    case Primitive::kPrimShort:
249      f->SetShort<transaction_active>(obj, shadow_frame.GetVReg(vregA));
250      break;
251    case Primitive::kPrimInt:
252      f->SetInt<transaction_active>(obj, shadow_frame.GetVReg(vregA));
253      break;
254    case Primitive::kPrimLong:
255      f->SetLong<transaction_active>(obj, shadow_frame.GetVRegLong(vregA));
256      break;
257    case Primitive::kPrimNot: {
258      Object* reg = shadow_frame.GetVRegReference(vregA);
259      if (do_assignability_check && reg != nullptr) {
260        // FieldHelper::GetType can resolve classes, use a handle wrapper which will restore the
261        // object in the destructor.
262        Class* field_class;
263        {
264          StackHandleScope<3> hs(self);
265          HandleWrapper<mirror::ArtField> h_f(hs.NewHandleWrapper(&f));
266          HandleWrapper<mirror::Object> h_reg(hs.NewHandleWrapper(&reg));
267          HandleWrapper<mirror::Object> h_obj(hs.NewHandleWrapper(&obj));
268          FieldHelper fh(h_f);
269          field_class = fh.GetType();
270        }
271        if (!reg->VerifierInstanceOf(field_class)) {
272          // This should never happen.
273          std::string temp1, temp2, temp3;
274          self->ThrowNewExceptionF(self->GetCurrentLocationForThrow(),
275                                   "Ljava/lang/VirtualMachineError;",
276                                   "Put '%s' that is not instance of field '%s' in '%s'",
277                                   reg->GetClass()->GetDescriptor(&temp1),
278                                   field_class->GetDescriptor(&temp2),
279                                   f->GetDeclaringClass()->GetDescriptor(&temp3));
280          return false;
281        }
282      }
283      f->SetObj<transaction_active>(obj, reg);
284      break;
285    }
286    default:
287      LOG(FATAL) << "Unreachable: " << field_type;
288  }
289  return true;
290}
291
292// Explicitly instantiate all DoFieldPut functions.
293#define EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, _do_check, _transaction_active) \
294  template bool DoFieldPut<_find_type, _field_type, _do_check, _transaction_active>(Thread* self, \
295      const ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data)
296
297#define EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(_find_type, _field_type)  \
298    EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, false, false);  \
299    EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, true, false);  \
300    EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, false, true);  \
301    EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, true, true);
302
303// iput-XXX
304EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimBoolean);
305EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimByte);
306EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimChar);
307EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimShort);
308EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimInt);
309EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimLong);
310EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstanceObjectWrite, Primitive::kPrimNot);
311
312// sput-XXX
313EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimBoolean);
314EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimByte);
315EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimChar);
316EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimShort);
317EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimInt);
318EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimLong);
319EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticObjectWrite, Primitive::kPrimNot);
320
321#undef EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL
322#undef EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL
323
324template<Primitive::Type field_type, bool transaction_active>
325bool DoIPutQuick(const ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data) {
326  Object* obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data));
327  if (UNLIKELY(obj == nullptr)) {
328    // We lost the reference to the field index so we cannot get a more
329    // precised exception message.
330    ThrowNullPointerExceptionFromDexPC(shadow_frame.GetCurrentLocationForThrow());
331    return false;
332  }
333  MemberOffset field_offset(inst->VRegC_22c());
334  const uint32_t vregA = inst->VRegA_22c(inst_data);
335  // Report this field modification to instrumentation if needed. Since we only have the offset of
336  // the field from the base of the object, we need to look for it first.
337  instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation();
338  if (UNLIKELY(instrumentation->HasFieldWriteListeners())) {
339    ArtField* f = ArtField::FindInstanceFieldWithOffset(obj->GetClass(),
340                                                        field_offset.Uint32Value());
341    DCHECK(f != nullptr);
342    DCHECK(!f->IsStatic());
343    JValue field_value = GetFieldValue<field_type>(shadow_frame, vregA);
344    instrumentation->FieldWriteEvent(Thread::Current(), obj, shadow_frame.GetMethod(),
345                                     shadow_frame.GetDexPC(), f, field_value);
346  }
347  // Note: iput-x-quick instructions are only for non-volatile fields.
348  switch (field_type) {
349    case Primitive::kPrimBoolean:
350      obj->SetFieldBoolean<transaction_active>(field_offset, shadow_frame.GetVReg(vregA));
351      break;
352    case Primitive::kPrimByte:
353      obj->SetFieldByte<transaction_active>(field_offset, shadow_frame.GetVReg(vregA));
354      break;
355    case Primitive::kPrimChar:
356      obj->SetFieldChar<transaction_active>(field_offset, shadow_frame.GetVReg(vregA));
357      break;
358    case Primitive::kPrimShort:
359      obj->SetFieldShort<transaction_active>(field_offset, shadow_frame.GetVReg(vregA));
360      break;
361    case Primitive::kPrimInt:
362      obj->SetField32<transaction_active>(field_offset, shadow_frame.GetVReg(vregA));
363      break;
364    case Primitive::kPrimLong:
365      obj->SetField64<transaction_active>(field_offset, shadow_frame.GetVRegLong(vregA));
366      break;
367    case Primitive::kPrimNot:
368      obj->SetFieldObject<transaction_active>(field_offset, shadow_frame.GetVRegReference(vregA));
369      break;
370    default:
371      LOG(FATAL) << "Unreachable: " << field_type;
372  }
373  return true;
374}
375
376// Explicitly instantiate all DoIPutQuick functions.
377#define EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL(_field_type, _transaction_active) \
378  template bool DoIPutQuick<_field_type, _transaction_active>(const ShadowFrame& shadow_frame, \
379                                                              const Instruction* inst, \
380                                                              uint16_t inst_data)
381
382#define EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(_field_type)   \
383  EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL(_field_type, false);     \
384  EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL(_field_type, true);
385
386EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimInt);  // iput-quick.
387EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimBoolean);  // iput-boolean-quick.
388EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimByte);  // iput-byte-quick.
389EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimChar);  // iput-char-quick.
390EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimShort);  // iput-short-quick.
391EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimLong);  // iput-wide-quick.
392EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimNot);  // iput-object-quick.
393#undef EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL
394#undef EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL
395
396/**
397 * Finds the location where this exception will be caught. We search until we reach either the top
398 * frame or a native frame, in which cases this exception is considered uncaught.
399 */
400class CatchLocationFinder : public StackVisitor {
401 public:
402  explicit CatchLocationFinder(Thread* self, Handle<mirror::Throwable>* exception)
403      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)
404    : StackVisitor(self, nullptr), self_(self), handle_scope_(self), exception_(exception),
405      catch_method_(handle_scope_.NewHandle<mirror::ArtMethod>(nullptr)),
406      catch_dex_pc_(DexFile::kDexNoIndex), clear_exception_(false) {
407  }
408
409  bool VisitFrame() OVERRIDE SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
410    mirror::ArtMethod* method = GetMethod();
411    if (method == nullptr) {
412      return true;
413    }
414    if (method->IsRuntimeMethod()) {
415      // Ignore callee save method.
416      DCHECK(method->IsCalleeSaveMethod());
417      return true;
418    }
419    if (method->IsNative()) {
420      return false;  // End stack walk.
421    }
422    DCHECK(!method->IsNative());
423    uint32_t dex_pc = GetDexPc();
424    if (dex_pc != DexFile::kDexNoIndex) {
425      uint32_t found_dex_pc;
426      {
427        StackHandleScope<3> hs(self_);
428        Handle<mirror::Class> exception_class(hs.NewHandle((*exception_)->GetClass()));
429        Handle<mirror::ArtMethod> h_method(hs.NewHandle(method));
430        found_dex_pc = mirror::ArtMethod::FindCatchBlock(h_method, exception_class, dex_pc,
431                                                         &clear_exception_);
432      }
433      if (found_dex_pc != DexFile::kDexNoIndex) {
434        catch_method_.Assign(method);
435        catch_dex_pc_ = found_dex_pc;
436        return false;  // End stack walk.
437      }
438    }
439    return true;  // Continue stack walk.
440  }
441
442  ArtMethod* GetCatchMethod() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
443    return catch_method_.Get();
444  }
445
446  uint32_t GetCatchDexPc() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
447    return catch_dex_pc_;
448  }
449
450  bool NeedClearException() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
451    return clear_exception_;
452  }
453
454 private:
455  Thread* const self_;
456  StackHandleScope<1> handle_scope_;
457  Handle<mirror::Throwable>* exception_;
458  Handle<mirror::ArtMethod> catch_method_;
459  uint32_t catch_dex_pc_;
460  bool clear_exception_;
461
462
463  DISALLOW_COPY_AND_ASSIGN(CatchLocationFinder);
464};
465
466uint32_t FindNextInstructionFollowingException(Thread* self,
467                                               ShadowFrame& shadow_frame,
468                                               uint32_t dex_pc,
469                                               const instrumentation::Instrumentation* instrumentation) {
470  self->VerifyStack();
471  ThrowLocation throw_location;
472  StackHandleScope<3> hs(self);
473  Handle<mirror::Throwable> exception(hs.NewHandle(self->GetException(&throw_location)));
474  if (!self->IsExceptionReportedToInstrumentation() && instrumentation->HasExceptionCaughtListeners()) {
475    CatchLocationFinder clf(self, &exception);
476    clf.WalkStack(false);
477    instrumentation->ExceptionCaughtEvent(self, throw_location, clf.GetCatchMethod(),
478                                          clf.GetCatchDexPc(), exception.Get());
479    self->SetExceptionReportedToInstrumentation(true);
480  }
481  bool clear_exception = false;
482  uint32_t found_dex_pc;
483  {
484    Handle<mirror::Class> exception_class(hs.NewHandle(exception->GetClass()));
485    Handle<mirror::ArtMethod> h_method(hs.NewHandle(shadow_frame.GetMethod()));
486    found_dex_pc = mirror::ArtMethod::FindCatchBlock(h_method, exception_class, dex_pc,
487                                                     &clear_exception);
488  }
489  if (found_dex_pc == DexFile::kDexNoIndex) {
490    instrumentation->MethodUnwindEvent(self, shadow_frame.GetThisObject(),
491                                       shadow_frame.GetMethod(), dex_pc);
492  } else {
493    if (self->IsExceptionReportedToInstrumentation()) {
494      instrumentation->MethodUnwindEvent(self, shadow_frame.GetThisObject(),
495                                         shadow_frame.GetMethod(), dex_pc);
496    }
497    if (clear_exception) {
498      self->ClearException();
499    }
500  }
501  return found_dex_pc;
502}
503
504void UnexpectedOpcode(const Instruction* inst, MethodHelper& mh) {
505  LOG(FATAL) << "Unexpected instruction: " << inst->DumpString(mh.GetMethod()->GetDexFile());
506  exit(0);  // Unreachable, keep GCC happy.
507}
508
509static void UnstartedRuntimeInvoke(Thread* self, MethodHelper& mh,
510                                   const DexFile::CodeItem* code_item, ShadowFrame* shadow_frame,
511                                   JValue* result, size_t arg_offset)
512    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
513
514// Assign register 'src_reg' from shadow_frame to register 'dest_reg' into new_shadow_frame.
515static inline void AssignRegister(ShadowFrame* new_shadow_frame, const ShadowFrame& shadow_frame,
516                                  size_t dest_reg, size_t src_reg)
517    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
518  // If both register locations contains the same value, the register probably holds a reference.
519  // Uint required, so that sign extension does not make this wrong on 64b systems
520  uint32_t src_value = shadow_frame.GetVReg(src_reg);
521  mirror::Object* o = shadow_frame.GetVRegReference<kVerifyNone>(src_reg);
522  if (src_value == reinterpret_cast<uintptr_t>(o)) {
523    new_shadow_frame->SetVRegReference(dest_reg, o);
524  } else {
525    new_shadow_frame->SetVReg(dest_reg, src_value);
526  }
527}
528
529void AbortTransaction(Thread* self, const char* fmt, ...) {
530  CHECK(Runtime::Current()->IsActiveTransaction());
531  // Throw an exception so we can abort the transaction and undo every change.
532  va_list args;
533  va_start(args, fmt);
534  self->ThrowNewExceptionV(self->GetCurrentLocationForThrow(), "Ljava/lang/InternalError;", fmt,
535                           args);
536  va_end(args);
537}
538
539template<bool is_range, bool do_assignability_check>
540bool DoCall(ArtMethod* method, Thread* self, ShadowFrame& shadow_frame,
541            const Instruction* inst, uint16_t inst_data, JValue* result) {
542  // Compute method information.
543  const DexFile::CodeItem* code_item = method->GetCodeItem();
544  const uint16_t num_ins = (is_range) ? inst->VRegA_3rc(inst_data) : inst->VRegA_35c(inst_data);
545  uint16_t num_regs;
546  if (LIKELY(code_item != NULL)) {
547    num_regs = code_item->registers_size_;
548    DCHECK_EQ(num_ins, code_item->ins_size_);
549  } else {
550    DCHECK(method->IsNative() || method->IsProxyMethod());
551    num_regs = num_ins;
552  }
553
554  // Allocate shadow frame on the stack.
555  const char* old_cause = self->StartAssertNoThreadSuspension("DoCall");
556  void* memory = alloca(ShadowFrame::ComputeSize(num_regs));
557  ShadowFrame* new_shadow_frame(ShadowFrame::Create(num_regs, &shadow_frame, method, 0, memory));
558
559  // Initialize new shadow frame.
560  const size_t first_dest_reg = num_regs - num_ins;
561  StackHandleScope<1> hs(self);
562  MethodHelper mh(hs.NewHandle(method));
563  if (do_assignability_check) {
564    // Slow path.
565    // We might need to do class loading, which incurs a thread state change to kNative. So
566    // register the shadow frame as under construction and allow suspension again.
567    self->SetShadowFrameUnderConstruction(new_shadow_frame);
568    self->EndAssertNoThreadSuspension(old_cause);
569
570    // We need to do runtime check on reference assignment. We need to load the shorty
571    // to get the exact type of each reference argument.
572    const DexFile::TypeList* params = method->GetParameterTypeList();
573    uint32_t shorty_len = 0;
574    const char* shorty = method->GetShorty(&shorty_len);
575
576    // TODO: find a cleaner way to separate non-range and range information without duplicating code.
577    uint32_t arg[5];  // only used in invoke-XXX.
578    uint32_t vregC;   // only used in invoke-XXX-range.
579    if (is_range) {
580      vregC = inst->VRegC_3rc();
581    } else {
582      inst->GetVarArgs(arg, inst_data);
583    }
584
585    // Handle receiver apart since it's not part of the shorty.
586    size_t dest_reg = first_dest_reg;
587    size_t arg_offset = 0;
588    if (!method->IsStatic()) {
589      size_t receiver_reg = is_range ? vregC : arg[0];
590      new_shadow_frame->SetVRegReference(dest_reg, shadow_frame.GetVRegReference(receiver_reg));
591      ++dest_reg;
592      ++arg_offset;
593    }
594    for (uint32_t shorty_pos = 0; dest_reg < num_regs; ++shorty_pos, ++dest_reg, ++arg_offset) {
595      DCHECK_LT(shorty_pos + 1, shorty_len);
596      const size_t src_reg = (is_range) ? vregC + arg_offset : arg[arg_offset];
597      switch (shorty[shorty_pos + 1]) {
598        case 'L': {
599          Object* o = shadow_frame.GetVRegReference(src_reg);
600          if (do_assignability_check && o != NULL) {
601            Class* arg_type = mh.GetClassFromTypeIdx(params->GetTypeItem(shorty_pos).type_idx_);
602            if (arg_type == NULL) {
603              CHECK(self->IsExceptionPending());
604              return false;
605            }
606            if (!o->VerifierInstanceOf(arg_type)) {
607              // This should never happen.
608              std::string temp1, temp2;
609              self->ThrowNewExceptionF(self->GetCurrentLocationForThrow(),
610                                       "Ljava/lang/VirtualMachineError;",
611                                       "Invoking %s with bad arg %d, type '%s' not instance of '%s'",
612                                       method->GetName(), shorty_pos,
613                                       o->GetClass()->GetDescriptor(&temp1),
614                                       arg_type->GetDescriptor(&temp2));
615              return false;
616            }
617          }
618          new_shadow_frame->SetVRegReference(dest_reg, o);
619          break;
620        }
621        case 'J': case 'D': {
622          uint64_t wide_value = (static_cast<uint64_t>(shadow_frame.GetVReg(src_reg + 1)) << 32) |
623                                static_cast<uint32_t>(shadow_frame.GetVReg(src_reg));
624          new_shadow_frame->SetVRegLong(dest_reg, wide_value);
625          ++dest_reg;
626          ++arg_offset;
627          break;
628        }
629        default:
630          new_shadow_frame->SetVReg(dest_reg, shadow_frame.GetVReg(src_reg));
631          break;
632      }
633    }
634    // We're done with the construction.
635    self->ClearShadowFrameUnderConstruction();
636  } else {
637    // Fast path: no extra checks.
638    if (is_range) {
639      const uint16_t first_src_reg = inst->VRegC_3rc();
640      for (size_t src_reg = first_src_reg, dest_reg = first_dest_reg; dest_reg < num_regs;
641          ++dest_reg, ++src_reg) {
642        AssignRegister(new_shadow_frame, shadow_frame, dest_reg, src_reg);
643      }
644    } else {
645      DCHECK_LE(num_ins, 5U);
646      uint16_t regList = inst->Fetch16(2);
647      uint16_t count = num_ins;
648      if (count == 5) {
649        AssignRegister(new_shadow_frame, shadow_frame, first_dest_reg + 4U, (inst_data >> 8) & 0x0f);
650        --count;
651       }
652      for (size_t arg_index = 0; arg_index < count; ++arg_index, regList >>= 4) {
653        AssignRegister(new_shadow_frame, shadow_frame, first_dest_reg + arg_index, regList & 0x0f);
654      }
655    }
656    self->EndAssertNoThreadSuspension(old_cause);
657  }
658
659  // Do the call now.
660  if (LIKELY(Runtime::Current()->IsStarted())) {
661    if (kIsDebugBuild && method->GetEntryPointFromInterpreter() == nullptr) {
662      LOG(FATAL) << "Attempt to invoke non-executable method: " << PrettyMethod(method);
663    }
664    if (kIsDebugBuild && Runtime::Current()->GetInstrumentation()->IsForcedInterpretOnly() &&
665        !method->IsNative() && !method->IsProxyMethod() &&
666        method->GetEntryPointFromInterpreter() == artInterpreterToCompiledCodeBridge) {
667      LOG(FATAL) << "Attempt to call compiled code when -Xint: " << PrettyMethod(method);
668    }
669    (method->GetEntryPointFromInterpreter())(self, mh, code_item, new_shadow_frame, result);
670  } else {
671    UnstartedRuntimeInvoke(self, mh, code_item, new_shadow_frame, result, first_dest_reg);
672  }
673  return !self->IsExceptionPending();
674}
675
676template <bool is_range, bool do_access_check, bool transaction_active>
677bool DoFilledNewArray(const Instruction* inst, const ShadowFrame& shadow_frame,
678                      Thread* self, JValue* result) {
679  DCHECK(inst->Opcode() == Instruction::FILLED_NEW_ARRAY ||
680         inst->Opcode() == Instruction::FILLED_NEW_ARRAY_RANGE);
681  const int32_t length = is_range ? inst->VRegA_3rc() : inst->VRegA_35c();
682  if (!is_range) {
683    // Checks FILLED_NEW_ARRAY's length does not exceed 5 arguments.
684    CHECK_LE(length, 5);
685  }
686  if (UNLIKELY(length < 0)) {
687    ThrowNegativeArraySizeException(length);
688    return false;
689  }
690  uint16_t type_idx = is_range ? inst->VRegB_3rc() : inst->VRegB_35c();
691  Class* arrayClass = ResolveVerifyAndClinit(type_idx, shadow_frame.GetMethod(),
692                                             self, false, do_access_check);
693  if (UNLIKELY(arrayClass == NULL)) {
694    DCHECK(self->IsExceptionPending());
695    return false;
696  }
697  CHECK(arrayClass->IsArrayClass());
698  Class* componentClass = arrayClass->GetComponentType();
699  if (UNLIKELY(componentClass->IsPrimitive() && !componentClass->IsPrimitiveInt())) {
700    if (componentClass->IsPrimitiveLong() || componentClass->IsPrimitiveDouble()) {
701      ThrowRuntimeException("Bad filled array request for type %s",
702                            PrettyDescriptor(componentClass).c_str());
703    } else {
704      self->ThrowNewExceptionF(shadow_frame.GetCurrentLocationForThrow(),
705                               "Ljava/lang/InternalError;",
706                               "Found type %s; filled-new-array not implemented for anything but 'int'",
707                               PrettyDescriptor(componentClass).c_str());
708    }
709    return false;
710  }
711  Object* newArray = Array::Alloc<true>(self, arrayClass, length, arrayClass->GetComponentSize(),
712                                        Runtime::Current()->GetHeap()->GetCurrentAllocator());
713  if (UNLIKELY(newArray == NULL)) {
714    DCHECK(self->IsExceptionPending());
715    return false;
716  }
717  uint32_t arg[5];  // only used in filled-new-array.
718  uint32_t vregC;   // only used in filled-new-array-range.
719  if (is_range) {
720    vregC = inst->VRegC_3rc();
721  } else {
722    inst->GetVarArgs(arg);
723  }
724  const bool is_primitive_int_component = componentClass->IsPrimitiveInt();
725  for (int32_t i = 0; i < length; ++i) {
726    size_t src_reg = is_range ? vregC + i : arg[i];
727    if (is_primitive_int_component) {
728      newArray->AsIntArray()->SetWithoutChecks<transaction_active>(i, shadow_frame.GetVReg(src_reg));
729    } else {
730      newArray->AsObjectArray<Object>()->SetWithoutChecks<transaction_active>(i, shadow_frame.GetVRegReference(src_reg));
731    }
732  }
733
734  result->SetL(newArray);
735  return true;
736}
737
738// TODO fix thread analysis: should be SHARED_LOCKS_REQUIRED(Locks::mutator_lock_).
739template<typename T>
740static void RecordArrayElementsInTransactionImpl(mirror::PrimitiveArray<T>* array, int32_t count)
741    NO_THREAD_SAFETY_ANALYSIS {
742  Runtime* runtime = Runtime::Current();
743  for (int32_t i = 0; i < count; ++i) {
744    runtime->RecordWriteArray(array, i, array->GetWithoutChecks(i));
745  }
746}
747
748void RecordArrayElementsInTransaction(mirror::Array* array, int32_t count)
749    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
750  DCHECK(Runtime::Current()->IsActiveTransaction());
751  DCHECK(array != nullptr);
752  DCHECK_LE(count, array->GetLength());
753  Primitive::Type primitive_component_type = array->GetClass()->GetComponentType()->GetPrimitiveType();
754  switch (primitive_component_type) {
755    case Primitive::kPrimBoolean:
756      RecordArrayElementsInTransactionImpl(array->AsBooleanArray(), count);
757      break;
758    case Primitive::kPrimByte:
759      RecordArrayElementsInTransactionImpl(array->AsByteArray(), count);
760      break;
761    case Primitive::kPrimChar:
762      RecordArrayElementsInTransactionImpl(array->AsCharArray(), count);
763      break;
764    case Primitive::kPrimShort:
765      RecordArrayElementsInTransactionImpl(array->AsShortArray(), count);
766      break;
767    case Primitive::kPrimInt:
768    case Primitive::kPrimFloat:
769      RecordArrayElementsInTransactionImpl(array->AsIntArray(), count);
770      break;
771    case Primitive::kPrimLong:
772    case Primitive::kPrimDouble:
773      RecordArrayElementsInTransactionImpl(array->AsLongArray(), count);
774      break;
775    default:
776      LOG(FATAL) << "Unsupported primitive type " << primitive_component_type
777                 << " in fill-array-data";
778      break;
779  }
780}
781
782// Helper function to deal with class loading in an unstarted runtime.
783static void UnstartedRuntimeFindClass(Thread* self, ConstHandle<mirror::String> className,
784                                      ConstHandle<mirror::ClassLoader> class_loader, JValue* result,
785                                      const std::string& method_name, bool initialize_class,
786                                      bool abort_if_not_found)
787    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
788  CHECK(className.Get() != nullptr);
789  std::string descriptor(DotToDescriptor(className->ToModifiedUtf8().c_str()));
790  ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
791
792  Class* found = class_linker->FindClass(self, descriptor.c_str(), class_loader);
793  if (found == nullptr && abort_if_not_found) {
794    if (!self->IsExceptionPending()) {
795      AbortTransaction(self, "%s failed in un-started runtime for class: %s",
796                       method_name.c_str(), PrettyDescriptor(descriptor.c_str()).c_str());
797    }
798    return;
799  }
800  if (found != nullptr && initialize_class) {
801    StackHandleScope<1> hs(self);
802    Handle<mirror::Class> h_class(hs.NewHandle(found));
803    if (!class_linker->EnsureInitialized(self, h_class, true, true)) {
804      CHECK(self->IsExceptionPending());
805      return;
806    }
807  }
808  result->SetL(found);
809}
810
811static void UnstartedRuntimeInvoke(Thread* self, MethodHelper& mh,
812                                   const DexFile::CodeItem* code_item, ShadowFrame* shadow_frame,
813                                   JValue* result, size_t arg_offset) {
814  // In a runtime that's not started we intercept certain methods to avoid complicated dependency
815  // problems in core libraries.
816  std::string name(PrettyMethod(shadow_frame->GetMethod()));
817  if (name == "java.lang.Class java.lang.Class.forName(java.lang.String)") {
818    // TODO: Support for the other variants that take more arguments should also be added.
819    mirror::String* class_name = shadow_frame->GetVRegReference(arg_offset)->AsString();
820    StackHandleScope<1> hs(self);
821    Handle<mirror::String> h_class_name(hs.NewHandle(class_name));
822    UnstartedRuntimeFindClass(self, h_class_name, NullHandle<mirror::ClassLoader>(), result, name,
823                              true, true);
824  } else if (name == "java.lang.Class java.lang.VMClassLoader.loadClass(java.lang.String, boolean)") {
825    mirror::String* class_name = shadow_frame->GetVRegReference(arg_offset)->AsString();
826    StackHandleScope<1> hs(self);
827    Handle<mirror::String> h_class_name(hs.NewHandle(class_name));
828    UnstartedRuntimeFindClass(self, h_class_name, NullHandle<mirror::ClassLoader>(), result, name,
829                              false, true);
830  } else if (name == "java.lang.Class java.lang.VMClassLoader.findLoadedClass(java.lang.ClassLoader, java.lang.String)") {
831    mirror::String* class_name = shadow_frame->GetVRegReference(arg_offset + 1)->AsString();
832    mirror::ClassLoader* class_loader =
833        down_cast<mirror::ClassLoader*>(shadow_frame->GetVRegReference(arg_offset));
834    StackHandleScope<2> hs(self);
835    Handle<mirror::String> h_class_name(hs.NewHandle(class_name));
836    Handle<mirror::ClassLoader> h_class_loader(hs.NewHandle(class_loader));
837    UnstartedRuntimeFindClass(self, h_class_name, h_class_loader, result, name, false, false);
838  } else if (name == "java.lang.Class java.lang.Void.lookupType()") {
839    result->SetL(Runtime::Current()->GetClassLinker()->FindPrimitiveClass('V'));
840  } else if (name == "java.lang.Object java.lang.Class.newInstance()") {
841    Class* klass = shadow_frame->GetVRegReference(arg_offset)->AsClass();
842    ArtMethod* c = klass->FindDeclaredDirectMethod("<init>", "()V");
843    CHECK(c != NULL);
844    StackHandleScope<1> hs(self);
845    Handle<Object> obj(hs.NewHandle(klass->AllocObject(self)));
846    CHECK(obj.Get() != NULL);
847    EnterInterpreterFromInvoke(self, c, obj.Get(), NULL, NULL);
848    result->SetL(obj.Get());
849  } else if (name == "java.lang.reflect.Field java.lang.Class.getDeclaredField(java.lang.String)") {
850    // Special managed code cut-out to allow field lookup in a un-started runtime that'd fail
851    // going the reflective Dex way.
852    Class* klass = shadow_frame->GetVRegReference(arg_offset)->AsClass();
853    String* name = shadow_frame->GetVRegReference(arg_offset + 1)->AsString();
854    ArtField* found = NULL;
855    ObjectArray<ArtField>* fields = klass->GetIFields();
856    for (int32_t i = 0; i < fields->GetLength() && found == NULL; ++i) {
857      ArtField* f = fields->Get(i);
858      if (name->Equals(f->GetName())) {
859        found = f;
860      }
861    }
862    if (found == NULL) {
863      fields = klass->GetSFields();
864      for (int32_t i = 0; i < fields->GetLength() && found == NULL; ++i) {
865        ArtField* f = fields->Get(i);
866        if (name->Equals(f->GetName())) {
867          found = f;
868        }
869      }
870    }
871    CHECK(found != NULL)
872      << "Failed to find field in Class.getDeclaredField in un-started runtime. name="
873      << name->ToModifiedUtf8() << " class=" << PrettyDescriptor(klass);
874    // TODO: getDeclaredField calls GetType once the field is found to ensure a
875    //       NoClassDefFoundError is thrown if the field's type cannot be resolved.
876    Class* jlr_Field = self->DecodeJObject(WellKnownClasses::java_lang_reflect_Field)->AsClass();
877    StackHandleScope<1> hs(self);
878    Handle<Object> field(hs.NewHandle(jlr_Field->AllocNonMovableObject(self)));
879    CHECK(field.Get() != NULL);
880    ArtMethod* c = jlr_Field->FindDeclaredDirectMethod("<init>", "(Ljava/lang/reflect/ArtField;)V");
881    uint32_t args[1];
882    args[0] = StackReference<mirror::Object>::FromMirrorPtr(found).AsVRegValue();
883    EnterInterpreterFromInvoke(self, c, field.Get(), args, NULL);
884    result->SetL(field.Get());
885  } else if (name == "int java.lang.Object.hashCode()") {
886    Object* obj = shadow_frame->GetVRegReference(arg_offset);
887    result->SetI(obj->IdentityHashCode());
888  } else if (name == "java.lang.String java.lang.reflect.ArtMethod.getMethodName(java.lang.reflect.ArtMethod)") {
889    StackHandleScope<1> hs(self);
890    MethodHelper mh(hs.NewHandle(shadow_frame->GetVRegReference(arg_offset)->AsArtMethod()));
891    result->SetL(mh.GetNameAsString(self));
892  } else if (name == "void java.lang.System.arraycopy(java.lang.Object, int, java.lang.Object, int, int)" ||
893             name == "void java.lang.System.arraycopy(char[], int, char[], int, int)") {
894    // Special case array copying without initializing System.
895    Class* ctype = shadow_frame->GetVRegReference(arg_offset)->GetClass()->GetComponentType();
896    jint srcPos = shadow_frame->GetVReg(arg_offset + 1);
897    jint dstPos = shadow_frame->GetVReg(arg_offset + 3);
898    jint length = shadow_frame->GetVReg(arg_offset + 4);
899    if (!ctype->IsPrimitive()) {
900      ObjectArray<Object>* src = shadow_frame->GetVRegReference(arg_offset)->AsObjectArray<Object>();
901      ObjectArray<Object>* dst = shadow_frame->GetVRegReference(arg_offset + 2)->AsObjectArray<Object>();
902      for (jint i = 0; i < length; ++i) {
903        dst->Set(dstPos + i, src->Get(srcPos + i));
904      }
905    } else if (ctype->IsPrimitiveChar()) {
906      CharArray* src = shadow_frame->GetVRegReference(arg_offset)->AsCharArray();
907      CharArray* dst = shadow_frame->GetVRegReference(arg_offset + 2)->AsCharArray();
908      for (jint i = 0; i < length; ++i) {
909        dst->Set(dstPos + i, src->Get(srcPos + i));
910      }
911    } else if (ctype->IsPrimitiveInt()) {
912      IntArray* src = shadow_frame->GetVRegReference(arg_offset)->AsIntArray();
913      IntArray* dst = shadow_frame->GetVRegReference(arg_offset + 2)->AsIntArray();
914      for (jint i = 0; i < length; ++i) {
915        dst->Set(dstPos + i, src->Get(srcPos + i));
916      }
917    } else {
918      self->ThrowNewExceptionF(self->GetCurrentLocationForThrow(), "Ljava/lang/InternalError;",
919                               "Unimplemented System.arraycopy for type '%s'",
920                               PrettyDescriptor(ctype).c_str());
921    }
922  } else  if (name == "java.lang.Object java.lang.ThreadLocal.get()") {
923    std::string caller(PrettyMethod(shadow_frame->GetLink()->GetMethod()));
924    if (caller == "java.lang.String java.lang.IntegralToString.convertInt(java.lang.AbstractStringBuilder, int)") {
925      // Allocate non-threadlocal buffer.
926      result->SetL(mirror::CharArray::Alloc(self, 11));
927    } else {
928      self->ThrowNewException(self->GetCurrentLocationForThrow(), "Ljava/lang/InternalError;",
929                              "Unimplemented ThreadLocal.get");
930    }
931  } else {
932    // Not special, continue with regular interpreter execution.
933    artInterpreterToInterpreterBridge(self, mh, code_item, shadow_frame, result);
934  }
935}
936
937// Explicit DoCall template function declarations.
938#define EXPLICIT_DO_CALL_TEMPLATE_DECL(_is_range, _do_assignability_check)                      \
939  template SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)                                          \
940  bool DoCall<_is_range, _do_assignability_check>(ArtMethod* method, Thread* self,              \
941                                                  ShadowFrame& shadow_frame,                    \
942                                                  const Instruction* inst, uint16_t inst_data,  \
943                                                  JValue* result)
944EXPLICIT_DO_CALL_TEMPLATE_DECL(false, false);
945EXPLICIT_DO_CALL_TEMPLATE_DECL(false, true);
946EXPLICIT_DO_CALL_TEMPLATE_DECL(true, false);
947EXPLICIT_DO_CALL_TEMPLATE_DECL(true, true);
948#undef EXPLICIT_DO_CALL_TEMPLATE_DECL
949
950// Explicit DoFilledNewArray template function declarations.
951#define EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL(_is_range_, _check, _transaction_active)       \
952  template SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)                                            \
953  bool DoFilledNewArray<_is_range_, _check, _transaction_active>(const Instruction* inst,         \
954                                                                 const ShadowFrame& shadow_frame, \
955                                                                 Thread* self, JValue* result)
956#define EXPLICIT_DO_FILLED_NEW_ARRAY_ALL_TEMPLATE_DECL(_transaction_active)       \
957  EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL(false, false, _transaction_active);  \
958  EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL(false, true, _transaction_active);   \
959  EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL(true, false, _transaction_active);   \
960  EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL(true, true, _transaction_active)
961EXPLICIT_DO_FILLED_NEW_ARRAY_ALL_TEMPLATE_DECL(false);
962EXPLICIT_DO_FILLED_NEW_ARRAY_ALL_TEMPLATE_DECL(true);
963#undef EXPLICIT_DO_FILLED_NEW_ARRAY_ALL_TEMPLATE_DECL
964#undef EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL
965
966}  // namespace interpreter
967}  // namespace art
968