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 26 namespace art { 27 namespace interpreter { 28 29 void ThrowNullPointerExceptionFromInterpreter() { 30 ThrowNullPointerExceptionFromDexPC(); 31 } 32 33 template<FindFieldType find_type, Primitive::Type field_type, bool do_access_check> 34 bool 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 104 EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimBoolean) 105 EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimByte) 106 EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimChar) 107 EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimShort) 108 EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimInt) 109 EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimLong) 110 EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstanceObjectRead, Primitive::kPrimNot) 111 112 // sget-XXX 113 EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimBoolean) 114 EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimByte) 115 EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimChar) 116 EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimShort) 117 EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimInt) 118 EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimLong) 119 EXPLICIT_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. 126 template<Primitive::Type field_type> 127 bool 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) 182 183 EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimInt); // iget-quick. 184 EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimBoolean); // iget-boolean-quick. 185 EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimByte); // iget-byte-quick. 186 EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimChar); // iget-char-quick. 187 EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimShort); // iget-short-quick. 188 EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimLong); // iget-wide-quick. 189 EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimNot); // iget-object-quick. 190 #undef EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL 191 192 template<Primitive::Type field_type> 193 static 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 } 224 225 template<FindFieldType find_type, Primitive::Type field_type, bool do_access_check, 226 bool transaction_active> 227 bool 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 323 EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimBoolean) 324 EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimByte) 325 EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimChar) 326 EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimShort) 327 EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimInt) 328 EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimLong) 329 EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstanceObjectWrite, Primitive::kPrimNot) 330 331 // sput-XXX 332 EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimBoolean) 333 EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimByte) 334 EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimChar) 335 EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimShort) 336 EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimInt) 337 EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimLong) 338 EXPLICIT_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 342 343 template<Primitive::Type field_type, bool transaction_active> 344 bool 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); 405 406 EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimInt) // iput-quick. 407 EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimBoolean) // iput-boolean-quick. 408 EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimByte) // iput-byte-quick. 409 EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimChar) // iput-char-quick. 410 EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimShort) // iput-short-quick. 411 EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimLong) // iput-wide-quick. 412 EXPLICIT_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 415 416 uint32_t FindNextInstructionFollowingException( 417 Thread* self, ShadowFrame& shadow_frame, uint32_t dex_pc, 418 const instrumentation::Instrumentation* instrumentation) { 419 self->VerifyStack(); 420 StackHandleScope<2> hs(self); 421 Handle<mirror::Throwable> exception(hs.NewHandle(self->GetException())); 422 if (instrumentation->HasExceptionCaughtListeners() 423 && self->IsExceptionThrownByCurrentMethod(exception.Get())) { 424 instrumentation->ExceptionCaughtEvent(self, exception.Get()); 425 } 426 bool clear_exception = false; 427 uint32_t found_dex_pc = shadow_frame.GetMethod()->FindCatchBlock( 428 hs.NewHandle(exception->GetClass()), dex_pc, &clear_exception); 429 if (found_dex_pc == DexFile::kDexNoIndex) { 430 // Exception is not caught by the current method. We will unwind to the 431 // caller. Notify any instrumentation listener. 432 instrumentation->MethodUnwindEvent(self, shadow_frame.GetThisObject(), 433 shadow_frame.GetMethod(), dex_pc); 434 } else { 435 // Exception is caught in the current method. We will jump to the found_dex_pc. 436 if (clear_exception) { 437 self->ClearException(); 438 } 439 } 440 return found_dex_pc; 441 } 442 443 void UnexpectedOpcode(const Instruction* inst, const ShadowFrame& shadow_frame) { 444 LOG(FATAL) << "Unexpected instruction: " 445 << inst->DumpString(shadow_frame.GetMethod()->GetDexFile()); 446 UNREACHABLE(); 447 } 448 449 // Assign register 'src_reg' from shadow_frame to register 'dest_reg' into new_shadow_frame. 450 static inline void AssignRegister(ShadowFrame* new_shadow_frame, const ShadowFrame& shadow_frame, 451 size_t dest_reg, size_t src_reg) 452 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 453 // If both register locations contains the same value, the register probably holds a reference. 454 // Uint required, so that sign extension does not make this wrong on 64b systems 455 uint32_t src_value = shadow_frame.GetVReg(src_reg); 456 mirror::Object* o = shadow_frame.GetVRegReference<kVerifyNone>(src_reg); 457 if (src_value == reinterpret_cast<uintptr_t>(o)) { 458 new_shadow_frame->SetVRegReference(dest_reg, o); 459 } else { 460 new_shadow_frame->SetVReg(dest_reg, src_value); 461 } 462 } 463 464 void AbortTransactionF(Thread* self, const char* fmt, ...) { 465 va_list args; 466 va_start(args, fmt); 467 AbortTransactionV(self, fmt, args); 468 va_end(args); 469 } 470 471 void AbortTransactionV(Thread* self, const char* fmt, va_list args) { 472 CHECK(Runtime::Current()->IsActiveTransaction()); 473 // Constructs abort message. 474 std::string abort_msg; 475 StringAppendV(&abort_msg, fmt, args); 476 // Throws an exception so we can abort the transaction and rollback every change. 477 Runtime::Current()->AbortTransactionAndThrowAbortError(self, abort_msg); 478 } 479 480 template<bool is_range, bool do_assignability_check> 481 bool DoCall(ArtMethod* called_method, Thread* self, ShadowFrame& shadow_frame, 482 const Instruction* inst, uint16_t inst_data, JValue* result) { 483 bool string_init = false; 484 // Replace calls to String.<init> with equivalent StringFactory call. 485 if (called_method->GetDeclaringClass()->IsStringClass() && called_method->IsConstructor()) { 486 ScopedObjectAccessUnchecked soa(self); 487 jmethodID mid = soa.EncodeMethod(called_method); 488 called_method = soa.DecodeMethod(WellKnownClasses::StringInitToStringFactoryMethodID(mid)); 489 string_init = true; 490 } 491 492 // Compute method information. 493 const DexFile::CodeItem* code_item = called_method->GetCodeItem(); 494 const uint16_t num_ins = (is_range) ? inst->VRegA_3rc(inst_data) : inst->VRegA_35c(inst_data); 495 uint16_t num_regs; 496 if (LIKELY(code_item != nullptr)) { 497 num_regs = code_item->registers_size_; 498 DCHECK_EQ(string_init ? num_ins - 1 : num_ins, code_item->ins_size_); 499 } else { 500 DCHECK(called_method->IsNative() || called_method->IsProxyMethod()); 501 num_regs = num_ins; 502 if (string_init) { 503 // The new StringFactory call is static and has one fewer argument. 504 num_regs--; 505 } 506 } 507 508 // Allocate shadow frame on the stack. 509 const char* old_cause = self->StartAssertNoThreadSuspension("DoCall"); 510 void* memory = alloca(ShadowFrame::ComputeSize(num_regs)); 511 ShadowFrame* new_shadow_frame(ShadowFrame::Create(num_regs, &shadow_frame, called_method, 0, 512 memory)); 513 514 // Initialize new shadow frame. 515 size_t first_dest_reg = num_regs - num_ins; 516 if (do_assignability_check) { 517 // Slow path. 518 // We might need to do class loading, which incurs a thread state change to kNative. So 519 // register the shadow frame as under construction and allow suspension again. 520 ScopedStackedShadowFramePusher pusher( 521 self, new_shadow_frame, StackedShadowFrameType::kShadowFrameUnderConstruction); 522 self->EndAssertNoThreadSuspension(old_cause); 523 524 // We need to do runtime check on reference assignment. We need to load the shorty 525 // to get the exact type of each reference argument. 526 const DexFile::TypeList* params = new_shadow_frame->GetMethod()->GetParameterTypeList(); 527 uint32_t shorty_len = 0; 528 const char* shorty = new_shadow_frame->GetMethod()->GetShorty(&shorty_len); 529 530 // TODO: find a cleaner way to separate non-range and range information without duplicating 531 // code. 532 uint32_t arg[5]; // only used in invoke-XXX. 533 uint32_t vregC; // only used in invoke-XXX-range. 534 if (is_range) { 535 vregC = inst->VRegC_3rc(); 536 } else { 537 inst->GetVarArgs(arg, inst_data); 538 } 539 540 // Handle receiver apart since it's not part of the shorty. 541 size_t dest_reg = first_dest_reg; 542 size_t arg_offset = 0; 543 if (!new_shadow_frame->GetMethod()->IsStatic()) { 544 size_t receiver_reg = is_range ? vregC : arg[0]; 545 new_shadow_frame->SetVRegReference(dest_reg, shadow_frame.GetVRegReference(receiver_reg)); 546 ++dest_reg; 547 ++arg_offset; 548 } else if (string_init) { 549 // Skip the referrer for the new static StringFactory call. 550 ++dest_reg; 551 ++arg_offset; 552 } 553 for (uint32_t shorty_pos = 0; dest_reg < num_regs; ++shorty_pos, ++dest_reg, ++arg_offset) { 554 DCHECK_LT(shorty_pos + 1, shorty_len); 555 const size_t src_reg = (is_range) ? vregC + arg_offset : arg[arg_offset]; 556 switch (shorty[shorty_pos + 1]) { 557 case 'L': { 558 Object* o = shadow_frame.GetVRegReference(src_reg); 559 if (do_assignability_check && o != nullptr) { 560 Class* arg_type = 561 new_shadow_frame->GetMethod()->GetClassFromTypeIndex( 562 params->GetTypeItem(shorty_pos).type_idx_, true); 563 if (arg_type == nullptr) { 564 CHECK(self->IsExceptionPending()); 565 return false; 566 } 567 if (!o->VerifierInstanceOf(arg_type)) { 568 // This should never happen. 569 std::string temp1, temp2; 570 self->ThrowNewExceptionF("Ljava/lang/VirtualMachineError;", 571 "Invoking %s with bad arg %d, type '%s' not instance of '%s'", 572 new_shadow_frame->GetMethod()->GetName(), shorty_pos, 573 o->GetClass()->GetDescriptor(&temp1), 574 arg_type->GetDescriptor(&temp2)); 575 return false; 576 } 577 } 578 new_shadow_frame->SetVRegReference(dest_reg, o); 579 break; 580 } 581 case 'J': case 'D': { 582 uint64_t wide_value = (static_cast<uint64_t>(shadow_frame.GetVReg(src_reg + 1)) << 32) | 583 static_cast<uint32_t>(shadow_frame.GetVReg(src_reg)); 584 new_shadow_frame->SetVRegLong(dest_reg, wide_value); 585 ++dest_reg; 586 ++arg_offset; 587 break; 588 } 589 default: 590 new_shadow_frame->SetVReg(dest_reg, shadow_frame.GetVReg(src_reg)); 591 break; 592 } 593 } 594 } else { 595 // Fast path: no extra checks. 596 if (is_range) { 597 uint16_t first_src_reg = inst->VRegC_3rc(); 598 if (string_init) { 599 // Skip the referrer for the new static StringFactory call. 600 ++first_src_reg; 601 ++first_dest_reg; 602 } 603 for (size_t src_reg = first_src_reg, dest_reg = first_dest_reg; dest_reg < num_regs; 604 ++dest_reg, ++src_reg) { 605 AssignRegister(new_shadow_frame, shadow_frame, dest_reg, src_reg); 606 } 607 } else { 608 DCHECK_LE(num_ins, 5U); 609 uint16_t regList = inst->Fetch16(2); 610 uint16_t count = num_ins; 611 size_t arg_index = 0; 612 if (count == 5) { 613 AssignRegister(new_shadow_frame, shadow_frame, first_dest_reg + 4U, 614 (inst_data >> 8) & 0x0f); 615 --count; 616 } 617 if (string_init) { 618 // Skip the referrer for the new static StringFactory call. 619 regList >>= 4; 620 ++first_dest_reg; 621 --count; 622 } 623 for (; arg_index < count; ++arg_index, regList >>= 4) { 624 AssignRegister(new_shadow_frame, shadow_frame, first_dest_reg + arg_index, regList & 0x0f); 625 } 626 } 627 self->EndAssertNoThreadSuspension(old_cause); 628 } 629 630 // Do the call now. 631 if (LIKELY(Runtime::Current()->IsStarted())) { 632 if (kIsDebugBuild && new_shadow_frame->GetMethod()->GetEntryPointFromInterpreter() == nullptr) { 633 LOG(FATAL) << "Attempt to invoke non-executable method: " 634 << PrettyMethod(new_shadow_frame->GetMethod()); 635 UNREACHABLE(); 636 } 637 if (kIsDebugBuild && Runtime::Current()->GetInstrumentation()->IsForcedInterpretOnly() && 638 !new_shadow_frame->GetMethod()->IsNative() && 639 !new_shadow_frame->GetMethod()->IsProxyMethod() && 640 new_shadow_frame->GetMethod()->GetEntryPointFromInterpreter() 641 == artInterpreterToCompiledCodeBridge) { 642 LOG(FATAL) << "Attempt to call compiled code when -Xint: " 643 << PrettyMethod(new_shadow_frame->GetMethod()); 644 UNREACHABLE(); 645 } 646 // Force the use of interpreter when it is required by the debugger. 647 EntryPointFromInterpreter* entry; 648 if (UNLIKELY(Dbg::IsForcedInterpreterNeededForCalling(self, new_shadow_frame->GetMethod()))) { 649 entry = &art::artInterpreterToInterpreterBridge; 650 } else { 651 entry = new_shadow_frame->GetMethod()->GetEntryPointFromInterpreter(); 652 } 653 entry(self, code_item, new_shadow_frame, result); 654 } else { 655 UnstartedRuntime::Invoke(self, code_item, new_shadow_frame, result, first_dest_reg); 656 } 657 658 if (string_init && !self->IsExceptionPending()) { 659 // Set the new string result of the StringFactory. 660 uint32_t vregC = (is_range) ? inst->VRegC_3rc() : inst->VRegC_35c(); 661 shadow_frame.SetVRegReference(vregC, result->GetL()); 662 // Overwrite all potential copies of the original result of the new-instance of string with the 663 // new result of the StringFactory. Use the verifier to find this set of registers. 664 ArtMethod* method = shadow_frame.GetMethod(); 665 MethodReference method_ref = method->ToMethodReference(); 666 SafeMap<uint32_t, std::set<uint32_t>> string_init_map; 667 SafeMap<uint32_t, std::set<uint32_t>>* string_init_map_ptr; 668 MethodRefToStringInitRegMap& method_to_string_init_map = Runtime::Current()->GetStringInitMap(); 669 auto it = method_to_string_init_map.find(method_ref); 670 if (it == method_to_string_init_map.end()) { 671 string_init_map = std::move(verifier::MethodVerifier::FindStringInitMap(method)); 672 method_to_string_init_map.Overwrite(method_ref, string_init_map); 673 string_init_map_ptr = &string_init_map; 674 } else { 675 string_init_map_ptr = &it->second; 676 } 677 if (string_init_map_ptr->size() != 0) { 678 uint32_t dex_pc = shadow_frame.GetDexPC(); 679 auto map_it = string_init_map_ptr->find(dex_pc); 680 if (map_it != string_init_map_ptr->end()) { 681 const std::set<uint32_t>& reg_set = map_it->second; 682 for (auto set_it = reg_set.begin(); set_it != reg_set.end(); ++set_it) { 683 shadow_frame.SetVRegReference(*set_it, result->GetL()); 684 } 685 } 686 } 687 } 688 689 return !self->IsExceptionPending(); 690 } 691 692 template <bool is_range, bool do_access_check, bool transaction_active> 693 bool DoFilledNewArray(const Instruction* inst, const ShadowFrame& shadow_frame, 694 Thread* self, JValue* result) { 695 DCHECK(inst->Opcode() == Instruction::FILLED_NEW_ARRAY || 696 inst->Opcode() == Instruction::FILLED_NEW_ARRAY_RANGE); 697 const int32_t length = is_range ? inst->VRegA_3rc() : inst->VRegA_35c(); 698 if (!is_range) { 699 // Checks FILLED_NEW_ARRAY's length does not exceed 5 arguments. 700 CHECK_LE(length, 5); 701 } 702 if (UNLIKELY(length < 0)) { 703 ThrowNegativeArraySizeException(length); 704 return false; 705 } 706 uint16_t type_idx = is_range ? inst->VRegB_3rc() : inst->VRegB_35c(); 707 Class* array_class = ResolveVerifyAndClinit(type_idx, shadow_frame.GetMethod(), 708 self, false, do_access_check); 709 if (UNLIKELY(array_class == nullptr)) { 710 DCHECK(self->IsExceptionPending()); 711 return false; 712 } 713 CHECK(array_class->IsArrayClass()); 714 Class* component_class = array_class->GetComponentType(); 715 const bool is_primitive_int_component = component_class->IsPrimitiveInt(); 716 if (UNLIKELY(component_class->IsPrimitive() && !is_primitive_int_component)) { 717 if (component_class->IsPrimitiveLong() || component_class->IsPrimitiveDouble()) { 718 ThrowRuntimeException("Bad filled array request for type %s", 719 PrettyDescriptor(component_class).c_str()); 720 } else { 721 self->ThrowNewExceptionF("Ljava/lang/InternalError;", 722 "Found type %s; filled-new-array not implemented for anything but 'int'", 723 PrettyDescriptor(component_class).c_str()); 724 } 725 return false; 726 } 727 Object* new_array = Array::Alloc<true>(self, array_class, length, 728 array_class->GetComponentSizeShift(), 729 Runtime::Current()->GetHeap()->GetCurrentAllocator()); 730 if (UNLIKELY(new_array == nullptr)) { 731 self->AssertPendingOOMException(); 732 return false; 733 } 734 uint32_t arg[5]; // only used in filled-new-array. 735 uint32_t vregC; // only used in filled-new-array-range. 736 if (is_range) { 737 vregC = inst->VRegC_3rc(); 738 } else { 739 inst->GetVarArgs(arg); 740 } 741 for (int32_t i = 0; i < length; ++i) { 742 size_t src_reg = is_range ? vregC + i : arg[i]; 743 if (is_primitive_int_component) { 744 new_array->AsIntArray()->SetWithoutChecks<transaction_active>( 745 i, shadow_frame.GetVReg(src_reg)); 746 } else { 747 new_array->AsObjectArray<Object>()->SetWithoutChecks<transaction_active>( 748 i, shadow_frame.GetVRegReference(src_reg)); 749 } 750 } 751 752 result->SetL(new_array); 753 return true; 754 } 755 756 // TODO fix thread analysis: should be SHARED_LOCKS_REQUIRED(Locks::mutator_lock_). 757 template<typename T> 758 static void RecordArrayElementsInTransactionImpl(mirror::PrimitiveArray<T>* array, int32_t count) 759 NO_THREAD_SAFETY_ANALYSIS { 760 Runtime* runtime = Runtime::Current(); 761 for (int32_t i = 0; i < count; ++i) { 762 runtime->RecordWriteArray(array, i, array->GetWithoutChecks(i)); 763 } 764 } 765 766 void RecordArrayElementsInTransaction(mirror::Array* array, int32_t count) 767 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 768 DCHECK(Runtime::Current()->IsActiveTransaction()); 769 DCHECK(array != nullptr); 770 DCHECK_LE(count, array->GetLength()); 771 Primitive::Type primitive_component_type = array->GetClass()->GetComponentType()->GetPrimitiveType(); 772 switch (primitive_component_type) { 773 case Primitive::kPrimBoolean: 774 RecordArrayElementsInTransactionImpl(array->AsBooleanArray(), count); 775 break; 776 case Primitive::kPrimByte: 777 RecordArrayElementsInTransactionImpl(array->AsByteArray(), count); 778 break; 779 case Primitive::kPrimChar: 780 RecordArrayElementsInTransactionImpl(array->AsCharArray(), count); 781 break; 782 case Primitive::kPrimShort: 783 RecordArrayElementsInTransactionImpl(array->AsShortArray(), count); 784 break; 785 case Primitive::kPrimInt: 786 RecordArrayElementsInTransactionImpl(array->AsIntArray(), count); 787 break; 788 case Primitive::kPrimFloat: 789 RecordArrayElementsInTransactionImpl(array->AsFloatArray(), count); 790 break; 791 case Primitive::kPrimLong: 792 RecordArrayElementsInTransactionImpl(array->AsLongArray(), count); 793 break; 794 case Primitive::kPrimDouble: 795 RecordArrayElementsInTransactionImpl(array->AsDoubleArray(), 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) 811 EXPLICIT_DO_CALL_TEMPLATE_DECL(false, false); 812 EXPLICIT_DO_CALL_TEMPLATE_DECL(false, true); 813 EXPLICIT_DO_CALL_TEMPLATE_DECL(true, false); 814 EXPLICIT_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) 828 EXPLICIT_DO_FILLED_NEW_ARRAY_ALL_TEMPLATE_DECL(false); 829 EXPLICIT_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
