interpreter_common.cc revision 9651d9b4ce938e49788e83d38d410eccee54ac90
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 <cmath> 20 21#include "debugger.h" 22#include "mirror/array-inl.h" 23#include "unstarted_runtime.h" 24#include "verifier/method_verifier.h" 25 26namespace art { 27namespace interpreter { 28 29void ThrowNullPointerExceptionFromInterpreter() { 30 ThrowNullPointerExceptionFromDexPC(); 31} 32 33template<FindFieldType find_type, Primitive::Type field_type, bool do_access_check> 34bool DoFieldGet(Thread* self, ShadowFrame& shadow_frame, const Instruction* inst, 35 uint16_t inst_data) { 36 const bool is_static = (find_type == StaticObjectRead) || (find_type == StaticPrimitiveRead); 37 const uint32_t field_idx = is_static ? inst->VRegB_21c() : inst->VRegC_22c(); 38 ArtField* f = FindFieldFromCode<find_type, do_access_check>(field_idx, shadow_frame.GetMethod(), self, 39 Primitive::ComponentSize(field_type)); 40 if (UNLIKELY(f == nullptr)) { 41 CHECK(self->IsExceptionPending()); 42 return false; 43 } 44 Object* obj; 45 if (is_static) { 46 obj = f->GetDeclaringClass(); 47 } else { 48 obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data)); 49 if (UNLIKELY(obj == nullptr)) { 50 ThrowNullPointerExceptionForFieldAccess(f, true); 51 return false; 52 } 53 } 54 f->GetDeclaringClass()->AssertInitializedOrInitializingInThread(self); 55 // Report this field access to instrumentation if needed. 56 instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); 57 if (UNLIKELY(instrumentation->HasFieldReadListeners())) { 58 Object* this_object = f->IsStatic() ? nullptr : obj; 59 instrumentation->FieldReadEvent(self, this_object, shadow_frame.GetMethod(), 60 shadow_frame.GetDexPC(), f); 61 } 62 uint32_t vregA = is_static ? inst->VRegA_21c(inst_data) : inst->VRegA_22c(inst_data); 63 switch (field_type) { 64 case Primitive::kPrimBoolean: 65 shadow_frame.SetVReg(vregA, f->GetBoolean(obj)); 66 break; 67 case Primitive::kPrimByte: 68 shadow_frame.SetVReg(vregA, f->GetByte(obj)); 69 break; 70 case Primitive::kPrimChar: 71 shadow_frame.SetVReg(vregA, f->GetChar(obj)); 72 break; 73 case Primitive::kPrimShort: 74 shadow_frame.SetVReg(vregA, f->GetShort(obj)); 75 break; 76 case Primitive::kPrimInt: 77 shadow_frame.SetVReg(vregA, f->GetInt(obj)); 78 break; 79 case Primitive::kPrimLong: 80 shadow_frame.SetVRegLong(vregA, f->GetLong(obj)); 81 break; 82 case Primitive::kPrimNot: 83 shadow_frame.SetVRegReference(vregA, f->GetObject(obj)); 84 break; 85 default: 86 LOG(FATAL) << "Unreachable: " << field_type; 87 UNREACHABLE(); 88 } 89 return true; 90} 91 92// Explicitly instantiate all DoFieldGet functions. 93#define EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL(_find_type, _field_type, _do_check) \ 94 template bool DoFieldGet<_find_type, _field_type, _do_check>(Thread* self, \ 95 ShadowFrame& shadow_frame, \ 96 const Instruction* inst, \ 97 uint16_t inst_data) 98 99#define EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(_find_type, _field_type) \ 100 EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL(_find_type, _field_type, false); \ 101 EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL(_find_type, _field_type, true); 102 103// iget-XXX 104EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimBoolean) 105EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimByte) 106EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimChar) 107EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimShort) 108EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimInt) 109EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimLong) 110EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstanceObjectRead, Primitive::kPrimNot) 111 112// sget-XXX 113EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimBoolean) 114EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimByte) 115EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimChar) 116EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimShort) 117EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimInt) 118EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimLong) 119EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticObjectRead, Primitive::kPrimNot) 120 121#undef EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL 122#undef EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL 123 124// Handles iget-quick, iget-wide-quick and iget-object-quick instructions. 125// Returns true on success, otherwise throws an exception and returns false. 126template<Primitive::Type field_type> 127bool DoIGetQuick(ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data) { 128 Object* obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data)); 129 if (UNLIKELY(obj == nullptr)) { 130 // We lost the reference to the field index so we cannot get a more 131 // precised exception message. 132 ThrowNullPointerExceptionFromDexPC(); 133 return false; 134 } 135 MemberOffset field_offset(inst->VRegC_22c()); 136 // Report this field access to instrumentation if needed. Since we only have the offset of 137 // the field from the base of the object, we need to look for it first. 138 instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); 139 if (UNLIKELY(instrumentation->HasFieldReadListeners())) { 140 ArtField* f = ArtField::FindInstanceFieldWithOffset(obj->GetClass(), 141 field_offset.Uint32Value()); 142 DCHECK(f != nullptr); 143 DCHECK(!f->IsStatic()); 144 instrumentation->FieldReadEvent(Thread::Current(), obj, shadow_frame.GetMethod(), 145 shadow_frame.GetDexPC(), f); 146 } 147 // Note: iget-x-quick instructions are only for non-volatile fields. 148 const uint32_t vregA = inst->VRegA_22c(inst_data); 149 switch (field_type) { 150 case Primitive::kPrimInt: 151 shadow_frame.SetVReg(vregA, static_cast<int32_t>(obj->GetField32(field_offset))); 152 break; 153 case Primitive::kPrimBoolean: 154 shadow_frame.SetVReg(vregA, static_cast<int32_t>(obj->GetFieldBoolean(field_offset))); 155 break; 156 case Primitive::kPrimByte: 157 shadow_frame.SetVReg(vregA, static_cast<int32_t>(obj->GetFieldByte(field_offset))); 158 break; 159 case Primitive::kPrimChar: 160 shadow_frame.SetVReg(vregA, static_cast<int32_t>(obj->GetFieldChar(field_offset))); 161 break; 162 case Primitive::kPrimShort: 163 shadow_frame.SetVReg(vregA, static_cast<int32_t>(obj->GetFieldShort(field_offset))); 164 break; 165 case Primitive::kPrimLong: 166 shadow_frame.SetVRegLong(vregA, static_cast<int64_t>(obj->GetField64(field_offset))); 167 break; 168 case Primitive::kPrimNot: 169 shadow_frame.SetVRegReference(vregA, obj->GetFieldObject<mirror::Object>(field_offset)); 170 break; 171 default: 172 LOG(FATAL) << "Unreachable: " << field_type; 173 UNREACHABLE(); 174 } 175 return true; 176} 177 178// Explicitly instantiate all DoIGetQuick functions. 179#define EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(_field_type) \ 180 template bool DoIGetQuick<_field_type>(ShadowFrame& shadow_frame, const Instruction* inst, \ 181 uint16_t inst_data) 182 183EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimInt); // iget-quick. 184EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimBoolean); // iget-boolean-quick. 185EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimByte); // iget-byte-quick. 186EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimChar); // iget-char-quick. 187EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimShort); // iget-short-quick. 188EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimLong); // iget-wide-quick. 189EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimNot); // iget-object-quick. 190#undef EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL 191 192template<Primitive::Type field_type> 193static JValue GetFieldValue(const ShadowFrame& shadow_frame, uint32_t vreg) 194 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 195 JValue field_value; 196 switch (field_type) { 197 case Primitive::kPrimBoolean: 198 field_value.SetZ(static_cast<uint8_t>(shadow_frame.GetVReg(vreg))); 199 break; 200 case Primitive::kPrimByte: 201 field_value.SetB(static_cast<int8_t>(shadow_frame.GetVReg(vreg))); 202 break; 203 case Primitive::kPrimChar: 204 field_value.SetC(static_cast<uint16_t>(shadow_frame.GetVReg(vreg))); 205 break; 206 case Primitive::kPrimShort: 207 field_value.SetS(static_cast<int16_t>(shadow_frame.GetVReg(vreg))); 208 break; 209 case Primitive::kPrimInt: 210 field_value.SetI(shadow_frame.GetVReg(vreg)); 211 break; 212 case Primitive::kPrimLong: 213 field_value.SetJ(shadow_frame.GetVRegLong(vreg)); 214 break; 215 case Primitive::kPrimNot: 216 field_value.SetL(shadow_frame.GetVRegReference(vreg)); 217 break; 218 default: 219 LOG(FATAL) << "Unreachable: " << field_type; 220 UNREACHABLE(); 221 } 222 return field_value; 223} 224 225template<FindFieldType find_type, Primitive::Type field_type, bool do_access_check, 226 bool transaction_active> 227bool DoFieldPut(Thread* self, const ShadowFrame& shadow_frame, const Instruction* inst, 228 uint16_t inst_data) { 229 bool do_assignability_check = do_access_check; 230 bool is_static = (find_type == StaticObjectWrite) || (find_type == StaticPrimitiveWrite); 231 uint32_t field_idx = is_static ? inst->VRegB_21c() : inst->VRegC_22c(); 232 ArtField* f = FindFieldFromCode<find_type, do_access_check>(field_idx, shadow_frame.GetMethod(), self, 233 Primitive::ComponentSize(field_type)); 234 if (UNLIKELY(f == nullptr)) { 235 CHECK(self->IsExceptionPending()); 236 return false; 237 } 238 Object* obj; 239 if (is_static) { 240 obj = f->GetDeclaringClass(); 241 } else { 242 obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data)); 243 if (UNLIKELY(obj == nullptr)) { 244 ThrowNullPointerExceptionForFieldAccess(f, false); 245 return false; 246 } 247 } 248 f->GetDeclaringClass()->AssertInitializedOrInitializingInThread(self); 249 uint32_t vregA = is_static ? inst->VRegA_21c(inst_data) : inst->VRegA_22c(inst_data); 250 // Report this field access to instrumentation if needed. Since we only have the offset of 251 // the field from the base of the object, we need to look for it first. 252 instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); 253 if (UNLIKELY(instrumentation->HasFieldWriteListeners())) { 254 JValue field_value = GetFieldValue<field_type>(shadow_frame, vregA); 255 Object* this_object = f->IsStatic() ? nullptr : obj; 256 instrumentation->FieldWriteEvent(self, this_object, shadow_frame.GetMethod(), 257 shadow_frame.GetDexPC(), f, field_value); 258 } 259 switch (field_type) { 260 case Primitive::kPrimBoolean: 261 f->SetBoolean<transaction_active>(obj, shadow_frame.GetVReg(vregA)); 262 break; 263 case Primitive::kPrimByte: 264 f->SetByte<transaction_active>(obj, shadow_frame.GetVReg(vregA)); 265 break; 266 case Primitive::kPrimChar: 267 f->SetChar<transaction_active>(obj, shadow_frame.GetVReg(vregA)); 268 break; 269 case Primitive::kPrimShort: 270 f->SetShort<transaction_active>(obj, shadow_frame.GetVReg(vregA)); 271 break; 272 case Primitive::kPrimInt: 273 f->SetInt<transaction_active>(obj, shadow_frame.GetVReg(vregA)); 274 break; 275 case Primitive::kPrimLong: 276 f->SetLong<transaction_active>(obj, shadow_frame.GetVRegLong(vregA)); 277 break; 278 case Primitive::kPrimNot: { 279 Object* reg = shadow_frame.GetVRegReference(vregA); 280 if (do_assignability_check && reg != nullptr) { 281 // FieldHelper::GetType can resolve classes, use a handle wrapper which will restore the 282 // object in the destructor. 283 Class* field_class; 284 { 285 StackHandleScope<2> hs(self); 286 HandleWrapper<mirror::Object> h_reg(hs.NewHandleWrapper(®)); 287 HandleWrapper<mirror::Object> h_obj(hs.NewHandleWrapper(&obj)); 288 field_class = f->GetType<true>(); 289 } 290 if (!reg->VerifierInstanceOf(field_class)) { 291 // This should never happen. 292 std::string temp1, temp2, temp3; 293 self->ThrowNewExceptionF("Ljava/lang/VirtualMachineError;", 294 "Put '%s' that is not instance of field '%s' in '%s'", 295 reg->GetClass()->GetDescriptor(&temp1), 296 field_class->GetDescriptor(&temp2), 297 f->GetDeclaringClass()->GetDescriptor(&temp3)); 298 return false; 299 } 300 } 301 f->SetObj<transaction_active>(obj, reg); 302 break; 303 } 304 default: 305 LOG(FATAL) << "Unreachable: " << field_type; 306 UNREACHABLE(); 307 } 308 return true; 309} 310 311// Explicitly instantiate all DoFieldPut functions. 312#define EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, _do_check, _transaction_active) \ 313 template bool DoFieldPut<_find_type, _field_type, _do_check, _transaction_active>(Thread* self, \ 314 const ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data) 315 316#define EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(_find_type, _field_type) \ 317 EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, false, false); \ 318 EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, true, false); \ 319 EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, false, true); \ 320 EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, true, true); 321 322// iput-XXX 323EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimBoolean) 324EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimByte) 325EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimChar) 326EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimShort) 327EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimInt) 328EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimLong) 329EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstanceObjectWrite, Primitive::kPrimNot) 330 331// sput-XXX 332EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimBoolean) 333EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimByte) 334EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimChar) 335EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimShort) 336EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimInt) 337EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimLong) 338EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticObjectWrite, Primitive::kPrimNot) 339 340#undef EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL 341#undef EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL 342 343template<Primitive::Type field_type, bool transaction_active> 344bool DoIPutQuick(const ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data) { 345 Object* obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data)); 346 if (UNLIKELY(obj == nullptr)) { 347 // We lost the reference to the field index so we cannot get a more 348 // precised exception message. 349 ThrowNullPointerExceptionFromDexPC(); 350 return false; 351 } 352 MemberOffset field_offset(inst->VRegC_22c()); 353 const uint32_t vregA = inst->VRegA_22c(inst_data); 354 // Report this field modification to instrumentation if needed. Since we only have the offset of 355 // the field from the base of the object, we need to look for it first. 356 instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); 357 if (UNLIKELY(instrumentation->HasFieldWriteListeners())) { 358 ArtField* f = ArtField::FindInstanceFieldWithOffset(obj->GetClass(), 359 field_offset.Uint32Value()); 360 DCHECK(f != nullptr); 361 DCHECK(!f->IsStatic()); 362 JValue field_value = GetFieldValue<field_type>(shadow_frame, vregA); 363 instrumentation->FieldWriteEvent(Thread::Current(), obj, shadow_frame.GetMethod(), 364 shadow_frame.GetDexPC(), f, field_value); 365 } 366 // Note: iput-x-quick instructions are only for non-volatile fields. 367 switch (field_type) { 368 case Primitive::kPrimBoolean: 369 obj->SetFieldBoolean<transaction_active>(field_offset, shadow_frame.GetVReg(vregA)); 370 break; 371 case Primitive::kPrimByte: 372 obj->SetFieldByte<transaction_active>(field_offset, shadow_frame.GetVReg(vregA)); 373 break; 374 case Primitive::kPrimChar: 375 obj->SetFieldChar<transaction_active>(field_offset, shadow_frame.GetVReg(vregA)); 376 break; 377 case Primitive::kPrimShort: 378 obj->SetFieldShort<transaction_active>(field_offset, shadow_frame.GetVReg(vregA)); 379 break; 380 case Primitive::kPrimInt: 381 obj->SetField32<transaction_active>(field_offset, shadow_frame.GetVReg(vregA)); 382 break; 383 case Primitive::kPrimLong: 384 obj->SetField64<transaction_active>(field_offset, shadow_frame.GetVRegLong(vregA)); 385 break; 386 case Primitive::kPrimNot: 387 obj->SetFieldObject<transaction_active>(field_offset, shadow_frame.GetVRegReference(vregA)); 388 break; 389 default: 390 LOG(FATAL) << "Unreachable: " << field_type; 391 UNREACHABLE(); 392 } 393 return true; 394} 395 396// Explicitly instantiate all DoIPutQuick functions. 397#define EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL(_field_type, _transaction_active) \ 398 template bool DoIPutQuick<_field_type, _transaction_active>(const ShadowFrame& shadow_frame, \ 399 const Instruction* inst, \ 400 uint16_t inst_data) 401 402#define EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(_field_type) \ 403 EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL(_field_type, false); \ 404 EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL(_field_type, true); 405 406EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimInt) // iput-quick. 407EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimBoolean) // iput-boolean-quick. 408EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimByte) // iput-byte-quick. 409EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimChar) // iput-char-quick. 410EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimShort) // iput-short-quick. 411EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimLong) // iput-wide-quick. 412EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimNot) // iput-object-quick. 413#undef EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL 414#undef EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL 415 416uint32_t FindNextInstructionFollowingException(Thread* self, 417 ShadowFrame& shadow_frame, 418 uint32_t dex_pc, 419 const instrumentation::Instrumentation* instrumentation) { 420 self->VerifyStack(); 421 StackHandleScope<3> hs(self); 422 Handle<mirror::Throwable> exception(hs.NewHandle(self->GetException())); 423 if (instrumentation->HasExceptionCaughtListeners() 424 && self->IsExceptionThrownByCurrentMethod(exception.Get())) { 425 instrumentation->ExceptionCaughtEvent(self, exception.Get()); 426 } 427 bool clear_exception = false; 428 uint32_t found_dex_pc; 429 { 430 Handle<mirror::Class> exception_class(hs.NewHandle(exception->GetClass())); 431 Handle<mirror::ArtMethod> h_method(hs.NewHandle(shadow_frame.GetMethod())); 432 found_dex_pc = mirror::ArtMethod::FindCatchBlock(h_method, exception_class, dex_pc, 433 &clear_exception); 434 } 435 if (found_dex_pc == DexFile::kDexNoIndex) { 436 // Exception is not caught by the current method. We will unwind to the 437 // caller. Notify any instrumentation listener. 438 instrumentation->MethodUnwindEvent(self, shadow_frame.GetThisObject(), 439 shadow_frame.GetMethod(), dex_pc); 440 } else { 441 // Exception is caught in the current method. We will jump to the found_dex_pc. 442 if (clear_exception) { 443 self->ClearException(); 444 } 445 } 446 return found_dex_pc; 447} 448 449void UnexpectedOpcode(const Instruction* inst, const ShadowFrame& shadow_frame) { 450 LOG(FATAL) << "Unexpected instruction: " 451 << inst->DumpString(shadow_frame.GetMethod()->GetDexFile()); 452 UNREACHABLE(); 453} 454 455// Assign register 'src_reg' from shadow_frame to register 'dest_reg' into new_shadow_frame. 456static inline void AssignRegister(ShadowFrame* new_shadow_frame, const ShadowFrame& shadow_frame, 457 size_t dest_reg, size_t src_reg) 458 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 459 // If both register locations contains the same value, the register probably holds a reference. 460 // Uint required, so that sign extension does not make this wrong on 64b systems 461 uint32_t src_value = shadow_frame.GetVReg(src_reg); 462 mirror::Object* o = shadow_frame.GetVRegReference<kVerifyNone>(src_reg); 463 if (src_value == reinterpret_cast<uintptr_t>(o)) { 464 new_shadow_frame->SetVRegReference(dest_reg, o); 465 } else { 466 new_shadow_frame->SetVReg(dest_reg, src_value); 467 } 468} 469 470void AbortTransactionF(Thread* self, const char* fmt, ...) { 471 va_list args; 472 va_start(args, fmt); 473 AbortTransactionV(self, fmt, args); 474 va_end(args); 475} 476 477void AbortTransactionV(Thread* self, const char* fmt, va_list args) { 478 CHECK(Runtime::Current()->IsActiveTransaction()); 479 // Constructs abort message. 480 std::string abort_msg; 481 StringAppendV(&abort_msg, fmt, args); 482 // Throws an exception so we can abort the transaction and rollback every change. 483 Runtime::Current()->AbortTransactionAndThrowAbortError(self, abort_msg); 484} 485 486template<bool is_range, bool do_assignability_check> 487bool DoCall(ArtMethod* called_method, Thread* self, ShadowFrame& shadow_frame, 488 const Instruction* inst, uint16_t inst_data, JValue* result) { 489 bool string_init = false; 490 // Replace calls to String.<init> with equivalent StringFactory call. 491 if (called_method->GetDeclaringClass()->IsStringClass() && called_method->IsConstructor()) { 492 ScopedObjectAccessUnchecked soa(self); 493 jmethodID mid = soa.EncodeMethod(called_method); 494 called_method = soa.DecodeMethod(WellKnownClasses::StringInitToStringFactoryMethodID(mid)); 495 string_init = true; 496 } 497 498 // Compute method information. 499 const DexFile::CodeItem* code_item = called_method->GetCodeItem(); 500 const uint16_t num_ins = (is_range) ? inst->VRegA_3rc(inst_data) : inst->VRegA_35c(inst_data); 501 uint16_t num_regs; 502 if (LIKELY(code_item != nullptr)) { 503 num_regs = code_item->registers_size_; 504 DCHECK_EQ(string_init ? num_ins - 1 : num_ins, code_item->ins_size_); 505 } else { 506 DCHECK(called_method->IsNative() || called_method->IsProxyMethod()); 507 num_regs = num_ins; 508 if (string_init) { 509 // The new StringFactory call is static and has one fewer argument. 510 num_regs--; 511 } 512 } 513 514 // Allocate shadow frame on the stack. 515 const char* old_cause = self->StartAssertNoThreadSuspension("DoCall"); 516 void* memory = alloca(ShadowFrame::ComputeSize(num_regs)); 517 ShadowFrame* new_shadow_frame(ShadowFrame::Create(num_regs, &shadow_frame, called_method, 0, 518 memory)); 519 520 // Initialize new shadow frame. 521 size_t first_dest_reg = num_regs - num_ins; 522 if (do_assignability_check) { 523 // Slow path. 524 // We might need to do class loading, which incurs a thread state change to kNative. So 525 // register the shadow frame as under construction and allow suspension again. 526 self->SetShadowFrameUnderConstruction(new_shadow_frame); 527 self->EndAssertNoThreadSuspension(old_cause); 528 529 // We need to do runtime check on reference assignment. We need to load the shorty 530 // to get the exact type of each reference argument. 531 const DexFile::TypeList* params = new_shadow_frame->GetMethod()->GetParameterTypeList(); 532 uint32_t shorty_len = 0; 533 const char* shorty = new_shadow_frame->GetMethod()->GetShorty(&shorty_len); 534 535 // TODO: find a cleaner way to separate non-range and range information without duplicating 536 // code. 537 uint32_t arg[5]; // only used in invoke-XXX. 538 uint32_t vregC; // only used in invoke-XXX-range. 539 if (is_range) { 540 vregC = inst->VRegC_3rc(); 541 } else { 542 inst->GetVarArgs(arg, inst_data); 543 } 544 545 // Handle receiver apart since it's not part of the shorty. 546 size_t dest_reg = first_dest_reg; 547 size_t arg_offset = 0; 548 if (!new_shadow_frame->GetMethod()->IsStatic()) { 549 size_t receiver_reg = is_range ? vregC : arg[0]; 550 new_shadow_frame->SetVRegReference(dest_reg, shadow_frame.GetVRegReference(receiver_reg)); 551 ++dest_reg; 552 ++arg_offset; 553 } else if (string_init) { 554 // Skip the referrer for the new static StringFactory call. 555 ++dest_reg; 556 ++arg_offset; 557 } 558 for (uint32_t shorty_pos = 0; dest_reg < num_regs; ++shorty_pos, ++dest_reg, ++arg_offset) { 559 DCHECK_LT(shorty_pos + 1, shorty_len); 560 const size_t src_reg = (is_range) ? vregC + arg_offset : arg[arg_offset]; 561 switch (shorty[shorty_pos + 1]) { 562 case 'L': { 563 Object* o = shadow_frame.GetVRegReference(src_reg); 564 if (do_assignability_check && o != nullptr) { 565 Class* arg_type = 566 new_shadow_frame->GetMethod()->GetClassFromTypeIndex( 567 params->GetTypeItem(shorty_pos).type_idx_, true); 568 if (arg_type == nullptr) { 569 CHECK(self->IsExceptionPending()); 570 return false; 571 } 572 if (!o->VerifierInstanceOf(arg_type)) { 573 // This should never happen. 574 std::string temp1, temp2; 575 self->ThrowNewExceptionF("Ljava/lang/VirtualMachineError;", 576 "Invoking %s with bad arg %d, type '%s' not instance of '%s'", 577 new_shadow_frame->GetMethod()->GetName(), shorty_pos, 578 o->GetClass()->GetDescriptor(&temp1), 579 arg_type->GetDescriptor(&temp2)); 580 return false; 581 } 582 } 583 new_shadow_frame->SetVRegReference(dest_reg, o); 584 break; 585 } 586 case 'J': case 'D': { 587 uint64_t wide_value = (static_cast<uint64_t>(shadow_frame.GetVReg(src_reg + 1)) << 32) | 588 static_cast<uint32_t>(shadow_frame.GetVReg(src_reg)); 589 new_shadow_frame->SetVRegLong(dest_reg, wide_value); 590 ++dest_reg; 591 ++arg_offset; 592 break; 593 } 594 default: 595 new_shadow_frame->SetVReg(dest_reg, shadow_frame.GetVReg(src_reg)); 596 break; 597 } 598 } 599 // We're done with the construction. 600 self->ClearShadowFrameUnderConstruction(); 601 } else { 602 // Fast path: no extra checks. 603 if (is_range) { 604 uint16_t first_src_reg = inst->VRegC_3rc(); 605 if (string_init) { 606 // Skip the referrer for the new static StringFactory call. 607 ++first_src_reg; 608 ++first_dest_reg; 609 } 610 for (size_t src_reg = first_src_reg, dest_reg = first_dest_reg; dest_reg < num_regs; 611 ++dest_reg, ++src_reg) { 612 AssignRegister(new_shadow_frame, shadow_frame, dest_reg, src_reg); 613 } 614 } else { 615 DCHECK_LE(num_ins, 5U); 616 uint16_t regList = inst->Fetch16(2); 617 uint16_t count = num_ins; 618 size_t arg_index = 0; 619 if (string_init) { 620 // Skip the referrer for the new static StringFactory call. 621 regList >>= 4; 622 ++arg_index; 623 } 624 if (count == 5) { 625 AssignRegister(new_shadow_frame, shadow_frame, first_dest_reg + 4U, 626 (inst_data >> 8) & 0x0f); 627 --count; 628 } 629 for (; arg_index < count; ++arg_index, regList >>= 4) { 630 AssignRegister(new_shadow_frame, shadow_frame, first_dest_reg + arg_index, regList & 0x0f); 631 } 632 } 633 self->EndAssertNoThreadSuspension(old_cause); 634 } 635 636 // Do the call now. 637 if (LIKELY(Runtime::Current()->IsStarted())) { 638 if (kIsDebugBuild && new_shadow_frame->GetMethod()->GetEntryPointFromInterpreter() == nullptr) { 639 LOG(FATAL) << "Attempt to invoke non-executable method: " 640 << PrettyMethod(new_shadow_frame->GetMethod()); 641 UNREACHABLE(); 642 } 643 if (kIsDebugBuild && Runtime::Current()->GetInstrumentation()->IsForcedInterpretOnly() && 644 !new_shadow_frame->GetMethod()->IsNative() && 645 !new_shadow_frame->GetMethod()->IsProxyMethod() && 646 new_shadow_frame->GetMethod()->GetEntryPointFromInterpreter() 647 == artInterpreterToCompiledCodeBridge) { 648 LOG(FATAL) << "Attempt to call compiled code when -Xint: " 649 << PrettyMethod(new_shadow_frame->GetMethod()); 650 UNREACHABLE(); 651 } 652 // Force the use of interpreter when it is required by the debugger. 653 mirror::EntryPointFromInterpreter* entry; 654 if (UNLIKELY(Dbg::IsForcedInterpreterNeededForCalling(self, new_shadow_frame->GetMethod()))) { 655 entry = &art::artInterpreterToInterpreterBridge; 656 } else { 657 entry = new_shadow_frame->GetMethod()->GetEntryPointFromInterpreter(); 658 } 659 entry(self, code_item, new_shadow_frame, result); 660 } else { 661 UnstartedRuntimeInvoke(self, code_item, new_shadow_frame, result, first_dest_reg); 662 } 663 664 if (string_init && !self->IsExceptionPending()) { 665 // Set the new string result of the StringFactory. 666 uint32_t vregC = (is_range) ? inst->VRegC_3rc() : inst->VRegC_35c(); 667 shadow_frame.SetVRegReference(vregC, result->GetL()); 668 // Overwrite all potential copies of the original result of the new-instance of string with the 669 // new result of the StringFactory. Use the verifier to find this set of registers. 670 mirror::ArtMethod* method = shadow_frame.GetMethod(); 671 MethodReference method_ref = method->ToMethodReference(); 672 SafeMap<uint32_t, std::set<uint32_t>> string_init_map; 673 SafeMap<uint32_t, std::set<uint32_t>>* string_init_map_ptr; 674 MethodRefToStringInitRegMap& method_to_string_init_map = Runtime::Current()->GetStringInitMap(); 675 auto it = method_to_string_init_map.find(method_ref); 676 if (it == method_to_string_init_map.end()) { 677 string_init_map = std::move(verifier::MethodVerifier::FindStringInitMap(method)); 678 method_to_string_init_map.Overwrite(method_ref, string_init_map); 679 string_init_map_ptr = &string_init_map; 680 } else { 681 string_init_map_ptr = &it->second; 682 } 683 if (string_init_map_ptr->size() != 0) { 684 uint32_t dex_pc = shadow_frame.GetDexPC(); 685 auto map_it = string_init_map_ptr->find(dex_pc); 686 if (map_it != string_init_map_ptr->end()) { 687 const std::set<uint32_t>& reg_set = map_it->second; 688 for (auto set_it = reg_set.begin(); set_it != reg_set.end(); ++set_it) { 689 shadow_frame.SetVRegReference(*set_it, result->GetL()); 690 } 691 } 692 } 693 } 694 695 return !self->IsExceptionPending(); 696} 697 698template <bool is_range, bool do_access_check, bool transaction_active> 699bool DoFilledNewArray(const Instruction* inst, const ShadowFrame& shadow_frame, 700 Thread* self, JValue* result) { 701 DCHECK(inst->Opcode() == Instruction::FILLED_NEW_ARRAY || 702 inst->Opcode() == Instruction::FILLED_NEW_ARRAY_RANGE); 703 const int32_t length = is_range ? inst->VRegA_3rc() : inst->VRegA_35c(); 704 if (!is_range) { 705 // Checks FILLED_NEW_ARRAY's length does not exceed 5 arguments. 706 CHECK_LE(length, 5); 707 } 708 if (UNLIKELY(length < 0)) { 709 ThrowNegativeArraySizeException(length); 710 return false; 711 } 712 uint16_t type_idx = is_range ? inst->VRegB_3rc() : inst->VRegB_35c(); 713 Class* arrayClass = ResolveVerifyAndClinit(type_idx, shadow_frame.GetMethod(), 714 self, false, do_access_check); 715 if (UNLIKELY(arrayClass == nullptr)) { 716 DCHECK(self->IsExceptionPending()); 717 return false; 718 } 719 CHECK(arrayClass->IsArrayClass()); 720 Class* componentClass = arrayClass->GetComponentType(); 721 if (UNLIKELY(componentClass->IsPrimitive() && !componentClass->IsPrimitiveInt())) { 722 if (componentClass->IsPrimitiveLong() || componentClass->IsPrimitiveDouble()) { 723 ThrowRuntimeException("Bad filled array request for type %s", 724 PrettyDescriptor(componentClass).c_str()); 725 } else { 726 self->ThrowNewExceptionF("Ljava/lang/InternalError;", 727 "Found type %s; filled-new-array not implemented for anything but 'int'", 728 PrettyDescriptor(componentClass).c_str()); 729 } 730 return false; 731 } 732 Object* newArray = Array::Alloc<true>(self, arrayClass, length, 733 arrayClass->GetComponentSizeShift(), 734 Runtime::Current()->GetHeap()->GetCurrentAllocator()); 735 if (UNLIKELY(newArray == nullptr)) { 736 DCHECK(self->IsExceptionPending()); 737 return false; 738 } 739 uint32_t arg[5]; // only used in filled-new-array. 740 uint32_t vregC; // only used in filled-new-array-range. 741 if (is_range) { 742 vregC = inst->VRegC_3rc(); 743 } else { 744 inst->GetVarArgs(arg); 745 } 746 const bool is_primitive_int_component = componentClass->IsPrimitiveInt(); 747 for (int32_t i = 0; i < length; ++i) { 748 size_t src_reg = is_range ? vregC + i : arg[i]; 749 if (is_primitive_int_component) { 750 newArray->AsIntArray()->SetWithoutChecks<transaction_active>(i, shadow_frame.GetVReg(src_reg)); 751 } else { 752 newArray->AsObjectArray<Object>()->SetWithoutChecks<transaction_active>(i, shadow_frame.GetVRegReference(src_reg)); 753 } 754 } 755 756 result->SetL(newArray); 757 return true; 758} 759 760// TODO fix thread analysis: should be SHARED_LOCKS_REQUIRED(Locks::mutator_lock_). 761template<typename T> 762static void RecordArrayElementsInTransactionImpl(mirror::PrimitiveArray<T>* array, int32_t count) 763 NO_THREAD_SAFETY_ANALYSIS { 764 Runtime* runtime = Runtime::Current(); 765 for (int32_t i = 0; i < count; ++i) { 766 runtime->RecordWriteArray(array, i, array->GetWithoutChecks(i)); 767 } 768} 769 770void RecordArrayElementsInTransaction(mirror::Array* array, int32_t count) 771 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 772 DCHECK(Runtime::Current()->IsActiveTransaction()); 773 DCHECK(array != nullptr); 774 DCHECK_LE(count, array->GetLength()); 775 Primitive::Type primitive_component_type = array->GetClass()->GetComponentType()->GetPrimitiveType(); 776 switch (primitive_component_type) { 777 case Primitive::kPrimBoolean: 778 RecordArrayElementsInTransactionImpl(array->AsBooleanArray(), count); 779 break; 780 case Primitive::kPrimByte: 781 RecordArrayElementsInTransactionImpl(array->AsByteArray(), count); 782 break; 783 case Primitive::kPrimChar: 784 RecordArrayElementsInTransactionImpl(array->AsCharArray(), count); 785 break; 786 case Primitive::kPrimShort: 787 RecordArrayElementsInTransactionImpl(array->AsShortArray(), count); 788 break; 789 case Primitive::kPrimInt: 790 case Primitive::kPrimFloat: 791 RecordArrayElementsInTransactionImpl(array->AsIntArray(), count); 792 break; 793 case Primitive::kPrimLong: 794 case Primitive::kPrimDouble: 795 RecordArrayElementsInTransactionImpl(array->AsLongArray(), count); 796 break; 797 default: 798 LOG(FATAL) << "Unsupported primitive type " << primitive_component_type 799 << " in fill-array-data"; 800 break; 801 } 802} 803 804// Explicit DoCall template function declarations. 805#define EXPLICIT_DO_CALL_TEMPLATE_DECL(_is_range, _do_assignability_check) \ 806 template SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) \ 807 bool DoCall<_is_range, _do_assignability_check>(ArtMethod* method, Thread* self, \ 808 ShadowFrame& shadow_frame, \ 809 const Instruction* inst, uint16_t inst_data, \ 810 JValue* result) 811EXPLICIT_DO_CALL_TEMPLATE_DECL(false, false); 812EXPLICIT_DO_CALL_TEMPLATE_DECL(false, true); 813EXPLICIT_DO_CALL_TEMPLATE_DECL(true, false); 814EXPLICIT_DO_CALL_TEMPLATE_DECL(true, true); 815#undef EXPLICIT_DO_CALL_TEMPLATE_DECL 816 817// Explicit DoFilledNewArray template function declarations. 818#define EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL(_is_range_, _check, _transaction_active) \ 819 template SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) \ 820 bool DoFilledNewArray<_is_range_, _check, _transaction_active>(const Instruction* inst, \ 821 const ShadowFrame& shadow_frame, \ 822 Thread* self, JValue* result) 823#define EXPLICIT_DO_FILLED_NEW_ARRAY_ALL_TEMPLATE_DECL(_transaction_active) \ 824 EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL(false, false, _transaction_active); \ 825 EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL(false, true, _transaction_active); \ 826 EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL(true, false, _transaction_active); \ 827 EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL(true, true, _transaction_active) 828EXPLICIT_DO_FILLED_NEW_ARRAY_ALL_TEMPLATE_DECL(false); 829EXPLICIT_DO_FILLED_NEW_ARRAY_ALL_TEMPLATE_DECL(true); 830#undef EXPLICIT_DO_FILLED_NEW_ARRAY_ALL_TEMPLATE_DECL 831#undef EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL 832 833} // namespace interpreter 834} // namespace art 835