| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "interpreter_common.h" |
| |
| #include <cmath> |
| |
| #include "base/enums.h" |
| #include "debugger.h" |
| #include "entrypoints/runtime_asm_entrypoints.h" |
| #include "jit/jit.h" |
| #include "jvalue.h" |
| #include "method_handles-inl.h" |
| #include "method_handles.h" |
| #include "mirror/array-inl.h" |
| #include "mirror/class.h" |
| #include "mirror/emulated_stack_frame.h" |
| #include "mirror/method_handle_impl-inl.h" |
| #include "reflection-inl.h" |
| #include "reflection.h" |
| #include "stack.h" |
| #include "thread-inl.h" |
| #include "transaction.h" |
| #include "well_known_classes.h" |
| |
| namespace art { |
| namespace interpreter { |
| |
| void ThrowNullPointerExceptionFromInterpreter() { |
| ThrowNullPointerExceptionFromDexPC(); |
| } |
| |
| template<FindFieldType find_type, Primitive::Type field_type, bool do_access_check, |
| bool transaction_active> |
| bool DoFieldGet(Thread* self, ShadowFrame& shadow_frame, const Instruction* inst, |
| uint16_t inst_data) { |
| const bool is_static = (find_type == StaticObjectRead) || (find_type == StaticPrimitiveRead); |
| const uint32_t field_idx = is_static ? inst->VRegB_21c() : inst->VRegC_22c(); |
| ArtField* f = |
| FindFieldFromCode<find_type, do_access_check>(field_idx, shadow_frame.GetMethod(), self, |
| Primitive::ComponentSize(field_type)); |
| if (UNLIKELY(f == nullptr)) { |
| CHECK(self->IsExceptionPending()); |
| return false; |
| } |
| ObjPtr<mirror::Object> obj; |
| if (is_static) { |
| obj = f->GetDeclaringClass(); |
| if (transaction_active) { |
| if (Runtime::Current()->GetTransaction()->ReadConstraint(obj.Ptr(), f)) { |
| Runtime::Current()->AbortTransactionAndThrowAbortError(self, "Can't read static fields of " |
| + obj->PrettyTypeOf() + " since it does not belong to clinit's class."); |
| return false; |
| } |
| } |
| } else { |
| obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data)); |
| if (UNLIKELY(obj == nullptr)) { |
| ThrowNullPointerExceptionForFieldAccess(f, true); |
| return false; |
| } |
| } |
| |
| JValue result; |
| if (UNLIKELY(!DoFieldGetCommon<field_type>(self, shadow_frame, obj, f, &result))) { |
| // Instrumentation threw an error! |
| CHECK(self->IsExceptionPending()); |
| return false; |
| } |
| uint32_t vregA = is_static ? inst->VRegA_21c(inst_data) : inst->VRegA_22c(inst_data); |
| switch (field_type) { |
| case Primitive::kPrimBoolean: |
| shadow_frame.SetVReg(vregA, result.GetZ()); |
| break; |
| case Primitive::kPrimByte: |
| shadow_frame.SetVReg(vregA, result.GetB()); |
| break; |
| case Primitive::kPrimChar: |
| shadow_frame.SetVReg(vregA, result.GetC()); |
| break; |
| case Primitive::kPrimShort: |
| shadow_frame.SetVReg(vregA, result.GetS()); |
| break; |
| case Primitive::kPrimInt: |
| shadow_frame.SetVReg(vregA, result.GetI()); |
| break; |
| case Primitive::kPrimLong: |
| shadow_frame.SetVRegLong(vregA, result.GetJ()); |
| break; |
| case Primitive::kPrimNot: |
| shadow_frame.SetVRegReference(vregA, result.GetL()); |
| break; |
| default: |
| LOG(FATAL) << "Unreachable: " << field_type; |
| UNREACHABLE(); |
| } |
| return true; |
| } |
| |
| // Explicitly instantiate all DoFieldGet functions. |
| #define EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL(_find_type, _field_type, _do_check, _transaction_active) \ |
| template bool DoFieldGet<_find_type, _field_type, _do_check, _transaction_active>(Thread* self, \ |
| ShadowFrame& shadow_frame, \ |
| const Instruction* inst, \ |
| uint16_t inst_data) |
| |
| #define EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(_find_type, _field_type) \ |
| EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL(_find_type, _field_type, false, true); \ |
| EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL(_find_type, _field_type, false, false); \ |
| EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL(_find_type, _field_type, true, true); \ |
| EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL(_find_type, _field_type, true, false); |
| |
| // iget-XXX |
| EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimBoolean) |
| EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimByte) |
| EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimChar) |
| EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimShort) |
| EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimInt) |
| EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimLong) |
| EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstanceObjectRead, Primitive::kPrimNot) |
| |
| // sget-XXX |
| EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimBoolean) |
| EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimByte) |
| EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimChar) |
| EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimShort) |
| EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimInt) |
| EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimLong) |
| EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticObjectRead, Primitive::kPrimNot) |
| |
| #undef EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL |
| #undef EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL |
| |
| // Handles iget-quick, iget-wide-quick and iget-object-quick instructions. |
| // Returns true on success, otherwise throws an exception and returns false. |
| template<Primitive::Type field_type> |
| bool DoIGetQuick(ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data) { |
| ObjPtr<mirror::Object> obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data)); |
| if (UNLIKELY(obj == nullptr)) { |
| // We lost the reference to the field index so we cannot get a more |
| // precised exception message. |
| ThrowNullPointerExceptionFromDexPC(); |
| return false; |
| } |
| MemberOffset field_offset(inst->VRegC_22c()); |
| // Report this field access to instrumentation if needed. Since we only have the offset of |
| // the field from the base of the object, we need to look for it first. |
| instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); |
| if (UNLIKELY(instrumentation->HasFieldReadListeners())) { |
| ArtField* f = ArtField::FindInstanceFieldWithOffset(obj->GetClass(), |
| field_offset.Uint32Value()); |
| DCHECK(f != nullptr); |
| DCHECK(!f->IsStatic()); |
| Thread* self = Thread::Current(); |
| StackHandleScope<1> hs(self); |
| // Save obj in case the instrumentation event has thread suspension. |
| HandleWrapperObjPtr<mirror::Object> h = hs.NewHandleWrapper(&obj); |
| instrumentation->FieldReadEvent(self, |
| obj.Ptr(), |
| shadow_frame.GetMethod(), |
| shadow_frame.GetDexPC(), |
| f); |
| if (UNLIKELY(self->IsExceptionPending())) { |
| return false; |
| } |
| } |
| // Note: iget-x-quick instructions are only for non-volatile fields. |
| const uint32_t vregA = inst->VRegA_22c(inst_data); |
| switch (field_type) { |
| case Primitive::kPrimInt: |
| shadow_frame.SetVReg(vregA, static_cast<int32_t>(obj->GetField32(field_offset))); |
| break; |
| case Primitive::kPrimBoolean: |
| shadow_frame.SetVReg(vregA, static_cast<int32_t>(obj->GetFieldBoolean(field_offset))); |
| break; |
| case Primitive::kPrimByte: |
| shadow_frame.SetVReg(vregA, static_cast<int32_t>(obj->GetFieldByte(field_offset))); |
| break; |
| case Primitive::kPrimChar: |
| shadow_frame.SetVReg(vregA, static_cast<int32_t>(obj->GetFieldChar(field_offset))); |
| break; |
| case Primitive::kPrimShort: |
| shadow_frame.SetVReg(vregA, static_cast<int32_t>(obj->GetFieldShort(field_offset))); |
| break; |
| case Primitive::kPrimLong: |
| shadow_frame.SetVRegLong(vregA, static_cast<int64_t>(obj->GetField64(field_offset))); |
| break; |
| case Primitive::kPrimNot: |
| shadow_frame.SetVRegReference(vregA, obj->GetFieldObject<mirror::Object>(field_offset)); |
| break; |
| default: |
| LOG(FATAL) << "Unreachable: " << field_type; |
| UNREACHABLE(); |
| } |
| return true; |
| } |
| |
| // Explicitly instantiate all DoIGetQuick functions. |
| #define EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(_field_type) \ |
| template bool DoIGetQuick<_field_type>(ShadowFrame& shadow_frame, const Instruction* inst, \ |
| uint16_t inst_data) |
| |
| EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimInt); // iget-quick. |
| EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimBoolean); // iget-boolean-quick. |
| EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimByte); // iget-byte-quick. |
| EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimChar); // iget-char-quick. |
| EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimShort); // iget-short-quick. |
| EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimLong); // iget-wide-quick. |
| EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimNot); // iget-object-quick. |
| #undef EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL |
| |
| template<Primitive::Type field_type> |
| static JValue GetFieldValue(const ShadowFrame& shadow_frame, uint32_t vreg) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| JValue field_value; |
| switch (field_type) { |
| case Primitive::kPrimBoolean: |
| field_value.SetZ(static_cast<uint8_t>(shadow_frame.GetVReg(vreg))); |
| break; |
| case Primitive::kPrimByte: |
| field_value.SetB(static_cast<int8_t>(shadow_frame.GetVReg(vreg))); |
| break; |
| case Primitive::kPrimChar: |
| field_value.SetC(static_cast<uint16_t>(shadow_frame.GetVReg(vreg))); |
| break; |
| case Primitive::kPrimShort: |
| field_value.SetS(static_cast<int16_t>(shadow_frame.GetVReg(vreg))); |
| break; |
| case Primitive::kPrimInt: |
| field_value.SetI(shadow_frame.GetVReg(vreg)); |
| break; |
| case Primitive::kPrimLong: |
| field_value.SetJ(shadow_frame.GetVRegLong(vreg)); |
| break; |
| case Primitive::kPrimNot: |
| field_value.SetL(shadow_frame.GetVRegReference(vreg)); |
| break; |
| default: |
| LOG(FATAL) << "Unreachable: " << field_type; |
| UNREACHABLE(); |
| } |
| return field_value; |
| } |
| |
| template<FindFieldType find_type, Primitive::Type field_type, bool do_access_check, |
| bool transaction_active> |
| bool DoFieldPut(Thread* self, const ShadowFrame& shadow_frame, const Instruction* inst, |
| uint16_t inst_data) { |
| const bool do_assignability_check = do_access_check; |
| bool is_static = (find_type == StaticObjectWrite) || (find_type == StaticPrimitiveWrite); |
| uint32_t field_idx = is_static ? inst->VRegB_21c() : inst->VRegC_22c(); |
| ArtField* f = |
| FindFieldFromCode<find_type, do_access_check>(field_idx, shadow_frame.GetMethod(), self, |
| Primitive::ComponentSize(field_type)); |
| if (UNLIKELY(f == nullptr)) { |
| CHECK(self->IsExceptionPending()); |
| return false; |
| } |
| ObjPtr<mirror::Object> obj; |
| if (is_static) { |
| obj = f->GetDeclaringClass(); |
| if (transaction_active) { |
| if (Runtime::Current()->GetTransaction()->WriteConstraint(obj.Ptr(), f)) { |
| Runtime::Current()->AbortTransactionAndThrowAbortError( |
| self, "Can't set fields of " + obj->PrettyTypeOf()); |
| return false; |
| } |
| } |
| |
| } else { |
| obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data)); |
| if (UNLIKELY(obj == nullptr)) { |
| ThrowNullPointerExceptionForFieldAccess(f, false); |
| return false; |
| } |
| } |
| |
| uint32_t vregA = is_static ? inst->VRegA_21c(inst_data) : inst->VRegA_22c(inst_data); |
| JValue value = GetFieldValue<field_type>(shadow_frame, vregA); |
| return DoFieldPutCommon<field_type, do_assignability_check, transaction_active>(self, |
| shadow_frame, |
| obj, |
| f, |
| value); |
| } |
| |
| // Explicitly instantiate all DoFieldPut functions. |
| #define EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, _do_check, _transaction_active) \ |
| template bool DoFieldPut<_find_type, _field_type, _do_check, _transaction_active>(Thread* self, \ |
| const ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data) |
| |
| #define EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(_find_type, _field_type) \ |
| EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, false, false); \ |
| EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, true, false); \ |
| EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, false, true); \ |
| EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, true, true); |
| |
| // iput-XXX |
| EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimBoolean) |
| EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimByte) |
| EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimChar) |
| EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimShort) |
| EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimInt) |
| EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimLong) |
| EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstanceObjectWrite, Primitive::kPrimNot) |
| |
| // sput-XXX |
| EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimBoolean) |
| EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimByte) |
| EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimChar) |
| EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimShort) |
| EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimInt) |
| EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimLong) |
| EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticObjectWrite, Primitive::kPrimNot) |
| |
| #undef EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL |
| #undef EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL |
| |
| template<Primitive::Type field_type, bool transaction_active> |
| bool DoIPutQuick(const ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data) { |
| ObjPtr<mirror::Object> obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data)); |
| if (UNLIKELY(obj == nullptr)) { |
| // We lost the reference to the field index so we cannot get a more |
| // precised exception message. |
| ThrowNullPointerExceptionFromDexPC(); |
| return false; |
| } |
| MemberOffset field_offset(inst->VRegC_22c()); |
| const uint32_t vregA = inst->VRegA_22c(inst_data); |
| // Report this field modification to instrumentation if needed. Since we only have the offset of |
| // the field from the base of the object, we need to look for it first. |
| instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); |
| if (UNLIKELY(instrumentation->HasFieldWriteListeners())) { |
| ArtField* f = ArtField::FindInstanceFieldWithOffset(obj->GetClass(), |
| field_offset.Uint32Value()); |
| DCHECK(f != nullptr); |
| DCHECK(!f->IsStatic()); |
| JValue field_value = GetFieldValue<field_type>(shadow_frame, vregA); |
| Thread* self = Thread::Current(); |
| StackHandleScope<2> hs(self); |
| // Save obj in case the instrumentation event has thread suspension. |
| HandleWrapperObjPtr<mirror::Object> h = hs.NewHandleWrapper(&obj); |
| mirror::Object* fake_root = nullptr; |
| HandleWrapper<mirror::Object> ret(hs.NewHandleWrapper<mirror::Object>( |
| field_type == Primitive::kPrimNot ? field_value.GetGCRoot() : &fake_root)); |
| instrumentation->FieldWriteEvent(self, |
| obj.Ptr(), |
| shadow_frame.GetMethod(), |
| shadow_frame.GetDexPC(), |
| f, |
| field_value); |
| if (UNLIKELY(self->IsExceptionPending())) { |
| return false; |
| } |
| } |
| // Note: iput-x-quick instructions are only for non-volatile fields. |
| switch (field_type) { |
| case Primitive::kPrimBoolean: |
| obj->SetFieldBoolean<transaction_active>(field_offset, shadow_frame.GetVReg(vregA)); |
| break; |
| case Primitive::kPrimByte: |
| obj->SetFieldByte<transaction_active>(field_offset, shadow_frame.GetVReg(vregA)); |
| break; |
| case Primitive::kPrimChar: |
| obj->SetFieldChar<transaction_active>(field_offset, shadow_frame.GetVReg(vregA)); |
| break; |
| case Primitive::kPrimShort: |
| obj->SetFieldShort<transaction_active>(field_offset, shadow_frame.GetVReg(vregA)); |
| break; |
| case Primitive::kPrimInt: |
| obj->SetField32<transaction_active>(field_offset, shadow_frame.GetVReg(vregA)); |
| break; |
| case Primitive::kPrimLong: |
| obj->SetField64<transaction_active>(field_offset, shadow_frame.GetVRegLong(vregA)); |
| break; |
| case Primitive::kPrimNot: |
| obj->SetFieldObject<transaction_active>(field_offset, shadow_frame.GetVRegReference(vregA)); |
| break; |
| default: |
| LOG(FATAL) << "Unreachable: " << field_type; |
| UNREACHABLE(); |
| } |
| return true; |
| } |
| |
| // Explicitly instantiate all DoIPutQuick functions. |
| #define EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL(_field_type, _transaction_active) \ |
| template bool DoIPutQuick<_field_type, _transaction_active>(const ShadowFrame& shadow_frame, \ |
| const Instruction* inst, \ |
| uint16_t inst_data) |
| |
| #define EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(_field_type) \ |
| EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL(_field_type, false); \ |
| EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL(_field_type, true); |
| |
| EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimInt) // iput-quick. |
| EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimBoolean) // iput-boolean-quick. |
| EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimByte) // iput-byte-quick. |
| EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimChar) // iput-char-quick. |
| EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimShort) // iput-short-quick. |
| EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimLong) // iput-wide-quick. |
| EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimNot) // iput-object-quick. |
| #undef EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL |
| #undef EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL |
| |
| // We accept a null Instrumentation* meaning we must not report anything to the instrumentation. |
| uint32_t FindNextInstructionFollowingException( |
| Thread* self, ShadowFrame& shadow_frame, uint32_t dex_pc, |
| const instrumentation::Instrumentation* instrumentation) { |
| self->VerifyStack(); |
| StackHandleScope<2> hs(self); |
| Handle<mirror::Throwable> exception(hs.NewHandle(self->GetException())); |
| if (instrumentation != nullptr && instrumentation->HasExceptionThrownListeners() |
| && self->IsExceptionThrownByCurrentMethod(exception.Get())) { |
| instrumentation->ExceptionThrownEvent(self, exception.Get()); |
| } |
| bool clear_exception = false; |
| uint32_t found_dex_pc = shadow_frame.GetMethod()->FindCatchBlock( |
| hs.NewHandle(exception->GetClass()), dex_pc, &clear_exception); |
| if (found_dex_pc == DexFile::kDexNoIndex && instrumentation != nullptr) { |
| // Exception is not caught by the current method. We will unwind to the |
| // caller. Notify any instrumentation listener. |
| instrumentation->MethodUnwindEvent(self, shadow_frame.GetThisObject(), |
| shadow_frame.GetMethod(), dex_pc); |
| } else { |
| // Exception is caught in the current method. We will jump to the found_dex_pc. |
| if (clear_exception) { |
| self->ClearException(); |
| } |
| } |
| return found_dex_pc; |
| } |
| |
| void UnexpectedOpcode(const Instruction* inst, const ShadowFrame& shadow_frame) { |
| LOG(FATAL) << "Unexpected instruction: " |
| << inst->DumpString(shadow_frame.GetMethod()->GetDexFile()); |
| UNREACHABLE(); |
| } |
| |
| void AbortTransactionF(Thread* self, const char* fmt, ...) { |
| va_list args; |
| va_start(args, fmt); |
| AbortTransactionV(self, fmt, args); |
| va_end(args); |
| } |
| |
| void AbortTransactionV(Thread* self, const char* fmt, va_list args) { |
| CHECK(Runtime::Current()->IsActiveTransaction()); |
| // Constructs abort message. |
| std::string abort_msg; |
| android::base::StringAppendV(&abort_msg, fmt, args); |
| // Throws an exception so we can abort the transaction and rollback every change. |
| Runtime::Current()->AbortTransactionAndThrowAbortError(self, abort_msg); |
| } |
| |
| // START DECLARATIONS : |
| // |
| // These additional declarations are required because clang complains |
| // about ALWAYS_INLINE (-Werror, -Wgcc-compat) in definitions. |
| // |
| |
| template <bool is_range, bool do_assignability_check> |
| static ALWAYS_INLINE bool DoCallCommon(ArtMethod* called_method, |
| Thread* self, |
| ShadowFrame& shadow_frame, |
| JValue* result, |
| uint16_t number_of_inputs, |
| uint32_t (&arg)[Instruction::kMaxVarArgRegs], |
| uint32_t vregC) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template <bool is_range> |
| ALWAYS_INLINE void CopyRegisters(ShadowFrame& caller_frame, |
| ShadowFrame* callee_frame, |
| const uint32_t (&arg)[Instruction::kMaxVarArgRegs], |
| const size_t first_src_reg, |
| const size_t first_dest_reg, |
| const size_t num_regs) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // END DECLARATIONS. |
| |
| void ArtInterpreterToCompiledCodeBridge(Thread* self, |
| ArtMethod* caller, |
| ShadowFrame* shadow_frame, |
| uint16_t arg_offset, |
| JValue* result) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| ArtMethod* method = shadow_frame->GetMethod(); |
| // Ensure static methods are initialized. |
| if (method->IsStatic()) { |
| ObjPtr<mirror::Class> declaringClass = method->GetDeclaringClass(); |
| if (UNLIKELY(!declaringClass->IsInitialized())) { |
| self->PushShadowFrame(shadow_frame); |
| StackHandleScope<1> hs(self); |
| Handle<mirror::Class> h_class(hs.NewHandle(declaringClass)); |
| if (UNLIKELY(!Runtime::Current()->GetClassLinker()->EnsureInitialized(self, h_class, true, |
| true))) { |
| self->PopShadowFrame(); |
| DCHECK(self->IsExceptionPending()); |
| return; |
| } |
| self->PopShadowFrame(); |
| CHECK(h_class->IsInitializing()); |
| // Reload from shadow frame in case the method moved, this is faster than adding a handle. |
| method = shadow_frame->GetMethod(); |
| } |
| } |
| // Basic checks for the arg_offset. If there's no code item, the arg_offset must be 0. Otherwise, |
| // check that the arg_offset isn't greater than the number of registers. A stronger check is |
| // difficult since the frame may contain space for all the registers in the method, or only enough |
| // space for the arguments. |
| if (kIsDebugBuild) { |
| if (method->GetCodeItem() == nullptr) { |
| DCHECK_EQ(0u, arg_offset) << method->PrettyMethod(); |
| } else { |
| DCHECK_LE(arg_offset, shadow_frame->NumberOfVRegs()); |
| } |
| } |
| jit::Jit* jit = Runtime::Current()->GetJit(); |
| if (jit != nullptr && caller != nullptr) { |
| jit->NotifyInterpreterToCompiledCodeTransition(self, caller); |
| } |
| method->Invoke(self, shadow_frame->GetVRegArgs(arg_offset), |
| (shadow_frame->NumberOfVRegs() - arg_offset) * sizeof(uint32_t), |
| result, method->GetInterfaceMethodIfProxy(kRuntimePointerSize)->GetShorty()); |
| } |
| |
| void SetStringInitValueToAllAliases(ShadowFrame* shadow_frame, |
| uint16_t this_obj_vreg, |
| JValue result) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| ObjPtr<mirror::Object> existing = shadow_frame->GetVRegReference(this_obj_vreg); |
| if (existing == nullptr) { |
| // If it's null, we come from compiled code that was deoptimized. Nothing to do, |
| // as the compiler verified there was no alias. |
| // Set the new string result of the StringFactory. |
| shadow_frame->SetVRegReference(this_obj_vreg, result.GetL()); |
| return; |
| } |
| // Set the string init result into all aliases. |
| for (uint32_t i = 0, e = shadow_frame->NumberOfVRegs(); i < e; ++i) { |
| if (shadow_frame->GetVRegReference(i) == existing) { |
| DCHECK_EQ(shadow_frame->GetVRegReference(i), |
| reinterpret_cast<mirror::Object*>(shadow_frame->GetVReg(i))); |
| shadow_frame->SetVRegReference(i, result.GetL()); |
| DCHECK_EQ(shadow_frame->GetVRegReference(i), |
| reinterpret_cast<mirror::Object*>(shadow_frame->GetVReg(i))); |
| } |
| } |
| } |
| |
| template<bool is_range> |
| bool DoInvokePolymorphic(Thread* self, |
| ShadowFrame& shadow_frame, |
| const Instruction* inst, |
| uint16_t inst_data, |
| JValue* result) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| // Invoke-polymorphic instructions always take a receiver. i.e, they are never static. |
| const uint32_t vRegC = (is_range) ? inst->VRegC_4rcc() : inst->VRegC_45cc(); |
| const int invoke_method_idx = (is_range) ? inst->VRegB_4rcc() : inst->VRegB_45cc(); |
| |
| // Initialize |result| to 0 as this is the default return value for |
| // polymorphic invocations of method handle types with void return |
| // and provides sane return result in error cases. |
| result->SetJ(0); |
| |
| // The invoke_method_idx here is the name of the signature polymorphic method that |
| // was symbolically invoked in bytecode (say MethodHandle.invoke or MethodHandle.invokeExact) |
| // and not the method that we'll dispatch to in the end. |
| StackHandleScope<5> hs(self); |
| Handle<mirror::MethodHandle> method_handle(hs.NewHandle( |
| ObjPtr<mirror::MethodHandle>::DownCast( |
| MakeObjPtr(shadow_frame.GetVRegReference(vRegC))))); |
| if (UNLIKELY(method_handle == nullptr)) { |
| // Note that the invoke type is kVirtual here because a call to a signature |
| // polymorphic method is shaped like a virtual call at the bytecode level. |
| ThrowNullPointerExceptionForMethodAccess(invoke_method_idx, InvokeType::kVirtual); |
| return false; |
| } |
| |
| // The vRegH value gives the index of the proto_id associated with this |
| // signature polymorphic call site. |
| const uint32_t callsite_proto_id = (is_range) ? inst->VRegH_4rcc() : inst->VRegH_45cc(); |
| |
| // Call through to the classlinker and ask it to resolve the static type associated |
| // with the callsite. This information is stored in the dex cache so it's |
| // guaranteed to be fast after the first resolution. |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| Handle<mirror::Class> caller_class(hs.NewHandle(shadow_frame.GetMethod()->GetDeclaringClass())); |
| Handle<mirror::MethodType> callsite_type(hs.NewHandle(class_linker->ResolveMethodType( |
| caller_class->GetDexFile(), callsite_proto_id, |
| hs.NewHandle<mirror::DexCache>(caller_class->GetDexCache()), |
| hs.NewHandle<mirror::ClassLoader>(caller_class->GetClassLoader())))); |
| |
| // This implies we couldn't resolve one or more types in this method handle. |
| if (UNLIKELY(callsite_type == nullptr)) { |
| CHECK(self->IsExceptionPending()); |
| return false; |
| } |
| |
| ArtMethod* invoke_method = |
| class_linker->ResolveMethod<ClassLinker::ResolveMode::kCheckICCEAndIAE>( |
| self, invoke_method_idx, shadow_frame.GetMethod(), kVirtual); |
| |
| // There is a common dispatch method for method handles that takes |
| // arguments either from a range or an array of arguments depending |
| // on whether the DEX instruction is invoke-polymorphic/range or |
| // invoke-polymorphic. The array here is for the latter. |
| uint32_t args[Instruction::kMaxVarArgRegs] = {}; |
| if (is_range) { |
| // VRegC is the register holding the method handle. Arguments passed |
| // to the method handle's target do not include the method handle. |
| uint32_t first_arg = inst->VRegC_4rcc() + 1; |
| return DoInvokePolymorphic<is_range>(self, |
| invoke_method, |
| shadow_frame, |
| method_handle, |
| callsite_type, |
| args /* unused */, |
| first_arg, |
| result); |
| } else { |
| // Get the register arguments for the invoke. |
| inst->GetVarArgs(args, inst_data); |
| // Drop the first register which is the method handle performing the invoke. |
| memmove(args, args + 1, sizeof(args[0]) * (Instruction::kMaxVarArgRegs - 1)); |
| args[Instruction::kMaxVarArgRegs - 1] = 0; |
| return DoInvokePolymorphic<is_range>(self, |
| invoke_method, |
| shadow_frame, |
| method_handle, |
| callsite_type, |
| args, |
| args[0], |
| result); |
| } |
| } |
| |
| static ObjPtr<mirror::CallSite> InvokeBootstrapMethod(Thread* self, |
| ShadowFrame& shadow_frame, |
| uint32_t call_site_idx) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| ArtMethod* referrer = shadow_frame.GetMethod(); |
| const DexFile* dex_file = referrer->GetDexFile(); |
| const DexFile::CallSiteIdItem& csi = dex_file->GetCallSiteId(call_site_idx); |
| |
| StackHandleScope<10> hs(self); |
| Handle<mirror::ClassLoader> class_loader(hs.NewHandle(referrer->GetClassLoader())); |
| Handle<mirror::DexCache> dex_cache(hs.NewHandle(referrer->GetDexCache())); |
| |
| CallSiteArrayValueIterator it(*dex_file, csi); |
| uint32_t method_handle_idx = static_cast<uint32_t>(it.GetJavaValue().i); |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| Handle<mirror::MethodHandle> |
| bootstrap(hs.NewHandle(class_linker->ResolveMethodHandle(method_handle_idx, referrer))); |
| if (bootstrap.IsNull()) { |
| DCHECK(self->IsExceptionPending()); |
| return nullptr; |
| } |
| Handle<mirror::MethodType> bootstrap_method_type = hs.NewHandle(bootstrap->GetMethodType()); |
| it.Next(); |
| |
| DCHECK_EQ(static_cast<size_t>(bootstrap->GetMethodType()->GetPTypes()->GetLength()), it.Size()); |
| const size_t num_bootstrap_vregs = bootstrap->GetMethodType()->NumberOfVRegs(); |
| |
| // Set-up a shadow frame for invoking the bootstrap method handle. |
| ShadowFrameAllocaUniquePtr bootstrap_frame = |
| CREATE_SHADOW_FRAME(num_bootstrap_vregs, nullptr, referrer, shadow_frame.GetDexPC()); |
| ScopedStackedShadowFramePusher pusher( |
| self, bootstrap_frame.get(), StackedShadowFrameType::kShadowFrameUnderConstruction); |
| size_t vreg = 0; |
| |
| // The first parameter is a MethodHandles lookup instance. |
| { |
| Handle<mirror::Class> lookup_class(hs.NewHandle(bootstrap->GetTargetClass())); |
| ObjPtr<mirror::MethodHandlesLookup> lookup = |
| mirror::MethodHandlesLookup::Create(self, lookup_class); |
| if (lookup.IsNull()) { |
| DCHECK(self->IsExceptionPending()); |
| return nullptr; |
| } |
| bootstrap_frame->SetVRegReference(vreg++, lookup.Ptr()); |
| } |
| |
| // The second parameter is the name to lookup. |
| { |
| dex::StringIndex name_idx(static_cast<uint32_t>(it.GetJavaValue().i)); |
| ObjPtr<mirror::String> name = class_linker->ResolveString(*dex_file, name_idx, dex_cache); |
| if (name.IsNull()) { |
| DCHECK(self->IsExceptionPending()); |
| return nullptr; |
| } |
| bootstrap_frame->SetVRegReference(vreg++, name.Ptr()); |
| } |
| it.Next(); |
| |
| // The third parameter is the method type associated with the name. |
| uint32_t method_type_idx = static_cast<uint32_t>(it.GetJavaValue().i); |
| Handle<mirror::MethodType> |
| method_type(hs.NewHandle(class_linker->ResolveMethodType(*dex_file, |
| method_type_idx, |
| dex_cache, |
| class_loader))); |
| if (method_type.IsNull()) { |
| DCHECK(self->IsExceptionPending()); |
| return nullptr; |
| } |
| bootstrap_frame->SetVRegReference(vreg++, method_type.Get()); |
| it.Next(); |
| |
| // Append remaining arguments (if any). |
| while (it.HasNext()) { |
| const jvalue& jvalue = it.GetJavaValue(); |
| switch (it.GetValueType()) { |
| case EncodedArrayValueIterator::ValueType::kBoolean: |
| case EncodedArrayValueIterator::ValueType::kByte: |
| case EncodedArrayValueIterator::ValueType::kChar: |
| case EncodedArrayValueIterator::ValueType::kShort: |
| case EncodedArrayValueIterator::ValueType::kInt: |
| bootstrap_frame->SetVReg(vreg, jvalue.i); |
| vreg += 1; |
| break; |
| case EncodedArrayValueIterator::ValueType::kLong: |
| bootstrap_frame->SetVRegLong(vreg, jvalue.j); |
| vreg += 2; |
| break; |
| case EncodedArrayValueIterator::ValueType::kFloat: |
| bootstrap_frame->SetVRegFloat(vreg, jvalue.f); |
| vreg += 1; |
| break; |
| case EncodedArrayValueIterator::ValueType::kDouble: |
| bootstrap_frame->SetVRegDouble(vreg, jvalue.d); |
| vreg += 2; |
| break; |
| case EncodedArrayValueIterator::ValueType::kMethodType: { |
| uint32_t idx = static_cast<uint32_t>(jvalue.i); |
| ObjPtr<mirror::MethodType> ref = |
| class_linker->ResolveMethodType(*dex_file, idx, dex_cache, class_loader); |
| if (ref.IsNull()) { |
| DCHECK(self->IsExceptionPending()); |
| return nullptr; |
| } |
| bootstrap_frame->SetVRegReference(vreg, ref.Ptr()); |
| vreg += 1; |
| break; |
| } |
| case EncodedArrayValueIterator::ValueType::kMethodHandle: { |
| uint32_t idx = static_cast<uint32_t>(jvalue.i); |
| ObjPtr<mirror::MethodHandle> ref = |
| class_linker->ResolveMethodHandle(idx, referrer); |
| if (ref.IsNull()) { |
| DCHECK(self->IsExceptionPending()); |
| return nullptr; |
| } |
| bootstrap_frame->SetVRegReference(vreg, ref.Ptr()); |
| vreg += 1; |
| break; |
| } |
| case EncodedArrayValueIterator::ValueType::kString: { |
| dex::StringIndex idx(static_cast<uint32_t>(jvalue.i)); |
| ObjPtr<mirror::String> ref = class_linker->ResolveString(*dex_file, idx, dex_cache); |
| if (ref.IsNull()) { |
| DCHECK(self->IsExceptionPending()); |
| return nullptr; |
| } |
| bootstrap_frame->SetVRegReference(vreg, ref.Ptr()); |
| vreg += 1; |
| break; |
| } |
| case EncodedArrayValueIterator::ValueType::kType: { |
| dex::TypeIndex idx(static_cast<uint32_t>(jvalue.i)); |
| ObjPtr<mirror::Class> ref = |
| class_linker->ResolveType(*dex_file, idx, dex_cache, class_loader); |
| if (ref.IsNull()) { |
| DCHECK(self->IsExceptionPending()); |
| return nullptr; |
| } |
| bootstrap_frame->SetVRegReference(vreg, ref.Ptr()); |
| vreg += 1; |
| break; |
| } |
| case EncodedArrayValueIterator::ValueType::kNull: |
| bootstrap_frame->SetVRegReference(vreg, nullptr); |
| vreg += 1; |
| break; |
| case EncodedArrayValueIterator::ValueType::kField: |
| case EncodedArrayValueIterator::ValueType::kMethod: |
| case EncodedArrayValueIterator::ValueType::kEnum: |
| case EncodedArrayValueIterator::ValueType::kArray: |
| case EncodedArrayValueIterator::ValueType::kAnnotation: |
| // Unreachable based on current EncodedArrayValueIterator::Next(). |
| UNREACHABLE(); |
| } |
| |
| it.Next(); |
| } |
| |
| // Invoke the bootstrap method handle. |
| JValue result; |
| |
| // This array of arguments is unused. DoInvokePolymorphic() operates on either a |
| // an argument array or a range, but always takes an array argument. |
| uint32_t args_unused[Instruction::kMaxVarArgRegs]; |
| ArtMethod* invoke_exact = |
| jni::DecodeArtMethod(WellKnownClasses::java_lang_invoke_MethodHandle_invokeExact); |
| bool invoke_success = DoInvokePolymorphic<true /* is_range */>(self, |
| invoke_exact, |
| *bootstrap_frame, |
| bootstrap, |
| bootstrap_method_type, |
| args_unused, |
| 0, |
| &result); |
| if (!invoke_success) { |
| DCHECK(self->IsExceptionPending()); |
| return nullptr; |
| } |
| |
| Handle<mirror::Object> object(hs.NewHandle(result.GetL())); |
| |
| // Check the result is not null. |
| if (UNLIKELY(object.IsNull())) { |
| ThrowNullPointerException("CallSite == null"); |
| return nullptr; |
| } |
| |
| // Check the result type is a subclass of CallSite. |
| if (UNLIKELY(!object->InstanceOf(mirror::CallSite::StaticClass()))) { |
| ThrowClassCastException(object->GetClass(), mirror::CallSite::StaticClass()); |
| return nullptr; |
| } |
| |
| Handle<mirror::CallSite> call_site = |
| hs.NewHandle(ObjPtr<mirror::CallSite>::DownCast(ObjPtr<mirror::Object>(result.GetL()))); |
| |
| // Check the call site target is not null as we're going to invoke it. |
| Handle<mirror::MethodHandle> target = hs.NewHandle(call_site->GetTarget()); |
| if (UNLIKELY(target.IsNull())) { |
| ThrowNullPointerException("CallSite target == null"); |
| return nullptr; |
| } |
| |
| // Check the target method type matches the method type requested modulo the receiver |
| // needs to be compatible rather than exact. |
| Handle<mirror::MethodType> target_method_type = hs.NewHandle(target->GetMethodType()); |
| if (UNLIKELY(!target_method_type->IsExactMatch(method_type.Get()) && |
| !IsParameterTypeConvertible(target_method_type->GetPTypes()->GetWithoutChecks(0), |
| method_type->GetPTypes()->GetWithoutChecks(0)))) { |
| ThrowWrongMethodTypeException(target_method_type.Get(), method_type.Get()); |
| return nullptr; |
| } |
| |
| return call_site.Get(); |
| } |
| |
| template<bool is_range> |
| bool DoInvokeCustom(Thread* self, |
| ShadowFrame& shadow_frame, |
| const Instruction* inst, |
| uint16_t inst_data, |
| JValue* result) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| // invoke-custom is not supported in transactions. In transactions |
| // there is a limited set of types supported. invoke-custom allows |
| // running arbitrary code and instantiating arbitrary types. |
| CHECK(!Runtime::Current()->IsActiveTransaction()); |
| StackHandleScope<4> hs(self); |
| Handle<mirror::DexCache> dex_cache(hs.NewHandle(shadow_frame.GetMethod()->GetDexCache())); |
| const uint32_t call_site_idx = is_range ? inst->VRegB_3rc() : inst->VRegB_35c(); |
| MutableHandle<mirror::CallSite> |
| call_site(hs.NewHandle(dex_cache->GetResolvedCallSite(call_site_idx))); |
| if (call_site.IsNull()) { |
| call_site.Assign(InvokeBootstrapMethod(self, shadow_frame, call_site_idx)); |
| if (UNLIKELY(call_site.IsNull())) { |
| CHECK(self->IsExceptionPending()); |
| ThrowWrappedBootstrapMethodError("Exception from call site #%u bootstrap method", |
| call_site_idx); |
| result->SetJ(0); |
| return false; |
| } |
| mirror::CallSite* winning_call_site = |
| dex_cache->SetResolvedCallSite(call_site_idx, call_site.Get()); |
| call_site.Assign(winning_call_site); |
| } |
| |
| // CallSite.java checks the re-assignment of the call site target |
| // when mutating call site targets. We only check the target is |
| // non-null and has the right type during bootstrap method execution. |
| Handle<mirror::MethodHandle> target = hs.NewHandle(call_site->GetTarget()); |
| Handle<mirror::MethodType> target_method_type = hs.NewHandle(target->GetMethodType()); |
| DCHECK_EQ(static_cast<size_t>(inst->VRegA()), target_method_type->NumberOfVRegs()); |
| |
| uint32_t args[Instruction::kMaxVarArgRegs]; |
| if (is_range) { |
| args[0] = inst->VRegC_3rc(); |
| } else { |
| inst->GetVarArgs(args, inst_data); |
| } |
| |
| ArtMethod* invoke_exact = |
| jni::DecodeArtMethod(WellKnownClasses::java_lang_invoke_MethodHandle_invokeExact); |
| return DoInvokePolymorphic<is_range>(self, |
| invoke_exact, |
| shadow_frame, |
| target, |
| target_method_type, |
| args, |
| args[0], |
| result); |
| } |
| |
| template <bool is_range> |
| inline void CopyRegisters(ShadowFrame& caller_frame, |
| ShadowFrame* callee_frame, |
| const uint32_t (&arg)[Instruction::kMaxVarArgRegs], |
| const size_t first_src_reg, |
| const size_t first_dest_reg, |
| const size_t num_regs) { |
| if (is_range) { |
| const size_t dest_reg_bound = first_dest_reg + num_regs; |
| for (size_t src_reg = first_src_reg, dest_reg = first_dest_reg; dest_reg < dest_reg_bound; |
| ++dest_reg, ++src_reg) { |
| AssignRegister(callee_frame, caller_frame, dest_reg, src_reg); |
| } |
| } else { |
| DCHECK_LE(num_regs, arraysize(arg)); |
| |
| for (size_t arg_index = 0; arg_index < num_regs; ++arg_index) { |
| AssignRegister(callee_frame, caller_frame, first_dest_reg + arg_index, arg[arg_index]); |
| } |
| } |
| } |
| |
| template <bool is_range, |
| bool do_assignability_check> |
| static inline bool DoCallCommon(ArtMethod* called_method, |
| Thread* self, |
| ShadowFrame& shadow_frame, |
| JValue* result, |
| uint16_t number_of_inputs, |
| uint32_t (&arg)[Instruction::kMaxVarArgRegs], |
| uint32_t vregC) { |
| bool string_init = false; |
| // Replace calls to String.<init> with equivalent StringFactory call. |
| if (UNLIKELY(called_method->GetDeclaringClass()->IsStringClass() |
| && called_method->IsConstructor())) { |
| called_method = WellKnownClasses::StringInitToStringFactory(called_method); |
| string_init = true; |
| } |
| |
| // Compute method information. |
| const DexFile::CodeItem* code_item = called_method->GetCodeItem(); |
| // Number of registers for the callee's call frame. |
| uint16_t num_regs; |
| // Test whether to use the interpreter or compiler entrypoint, and save that result to pass to |
| // PerformCall. A deoptimization could occur at any time, and we shouldn't change which |
| // entrypoint to use once we start building the shadow frame. |
| |
| // For unstarted runtimes, always use the interpreter entrypoint. This fixes the case where we are |
| // doing cross compilation. Note that GetEntryPointFromQuickCompiledCode doesn't use the image |
| // pointer size here and this may case an overflow if it is called from the compiler. b/62402160 |
| const bool use_interpreter_entrypoint = !Runtime::Current()->IsStarted() || |
| ClassLinker::ShouldUseInterpreterEntrypoint( |
| called_method, |
| called_method->GetEntryPointFromQuickCompiledCode()); |
| if (LIKELY(code_item != nullptr)) { |
| // When transitioning to compiled code, space only needs to be reserved for the input registers. |
| // The rest of the frame gets discarded. This also prevents accessing the called method's code |
| // item, saving memory by keeping code items of compiled code untouched. |
| if (!use_interpreter_entrypoint) { |
| DCHECK(!Runtime::Current()->IsAotCompiler()) << "Compiler should use interpreter entrypoint"; |
| num_regs = number_of_inputs; |
| } else { |
| num_regs = code_item->registers_size_; |
| DCHECK_EQ(string_init ? number_of_inputs - 1 : number_of_inputs, code_item->ins_size_); |
| } |
| } else { |
| DCHECK(called_method->IsNative() || called_method->IsProxyMethod()); |
| num_regs = number_of_inputs; |
| } |
| |
| // Hack for String init: |
| // |
| // Rewrite invoke-x java.lang.String.<init>(this, a, b, c, ...) into: |
| // invoke-x StringFactory(a, b, c, ...) |
| // by effectively dropping the first virtual register from the invoke. |
| // |
| // (at this point the ArtMethod has already been replaced, |
| // so we just need to fix-up the arguments) |
| // |
| // Note that FindMethodFromCode in entrypoint_utils-inl.h was also special-cased |
| // to handle the compiler optimization of replacing `this` with null without |
| // throwing NullPointerException. |
| uint32_t string_init_vreg_this = is_range ? vregC : arg[0]; |
| if (UNLIKELY(string_init)) { |
| DCHECK_GT(num_regs, 0u); // As the method is an instance method, there should be at least 1. |
| |
| // The new StringFactory call is static and has one fewer argument. |
| if (code_item == nullptr) { |
| DCHECK(called_method->IsNative() || called_method->IsProxyMethod()); |
| num_regs--; |
| } // else ... don't need to change num_regs since it comes up from the string_init's code item |
| number_of_inputs--; |
| |
| // Rewrite the var-args, dropping the 0th argument ("this") |
| for (uint32_t i = 1; i < arraysize(arg); ++i) { |
| arg[i - 1] = arg[i]; |
| } |
| arg[arraysize(arg) - 1] = 0; |
| |
| // Rewrite the non-var-arg case |
| vregC++; // Skips the 0th vreg in the range ("this"). |
| } |
| |
| // Parameter registers go at the end of the shadow frame. |
| DCHECK_GE(num_regs, number_of_inputs); |
| size_t first_dest_reg = num_regs - number_of_inputs; |
| DCHECK_NE(first_dest_reg, (size_t)-1); |
| |
| // Allocate shadow frame on the stack. |
| const char* old_cause = self->StartAssertNoThreadSuspension("DoCallCommon"); |
| ShadowFrameAllocaUniquePtr shadow_frame_unique_ptr = |
| CREATE_SHADOW_FRAME(num_regs, &shadow_frame, called_method, /* dex pc */ 0); |
| ShadowFrame* new_shadow_frame = shadow_frame_unique_ptr.get(); |
| |
| // Initialize new shadow frame by copying the registers from the callee shadow frame. |
| if (do_assignability_check) { |
| // Slow path. |
| // We might need to do class loading, which incurs a thread state change to kNative. So |
| // register the shadow frame as under construction and allow suspension again. |
| ScopedStackedShadowFramePusher pusher( |
| self, new_shadow_frame, StackedShadowFrameType::kShadowFrameUnderConstruction); |
| self->EndAssertNoThreadSuspension(old_cause); |
| |
| // ArtMethod here is needed to check type information of the call site against the callee. |
| // Type information is retrieved from a DexFile/DexCache for that respective declared method. |
| // |
| // As a special case for proxy methods, which are not dex-backed, |
| // we have to retrieve type information from the proxy's method |
| // interface method instead (which is dex backed since proxies are never interfaces). |
| ArtMethod* method = |
| new_shadow_frame->GetMethod()->GetInterfaceMethodIfProxy(kRuntimePointerSize); |
| |
| // We need to do runtime check on reference assignment. We need to load the shorty |
| // to get the exact type of each reference argument. |
| const DexFile::TypeList* params = method->GetParameterTypeList(); |
| uint32_t shorty_len = 0; |
| const char* shorty = method->GetShorty(&shorty_len); |
| |
| // Handle receiver apart since it's not part of the shorty. |
| size_t dest_reg = first_dest_reg; |
| size_t arg_offset = 0; |
| |
| if (!method->IsStatic()) { |
| size_t receiver_reg = is_range ? vregC : arg[0]; |
| new_shadow_frame->SetVRegReference(dest_reg, shadow_frame.GetVRegReference(receiver_reg)); |
| ++dest_reg; |
| ++arg_offset; |
| DCHECK(!string_init); // All StringFactory methods are static. |
| } |
| |
| // Copy the caller's invoke-* arguments into the callee's parameter registers. |
| for (uint32_t shorty_pos = 0; dest_reg < num_regs; ++shorty_pos, ++dest_reg, ++arg_offset) { |
| // Skip the 0th 'shorty' type since it represents the return type. |
| DCHECK_LT(shorty_pos + 1, shorty_len) << "for shorty '" << shorty << "'"; |
| const size_t src_reg = (is_range) ? vregC + arg_offset : arg[arg_offset]; |
| switch (shorty[shorty_pos + 1]) { |
| // Handle Object references. 1 virtual register slot. |
| case 'L': { |
| ObjPtr<mirror::Object> o = shadow_frame.GetVRegReference(src_reg); |
| if (do_assignability_check && o != nullptr) { |
| const dex::TypeIndex type_idx = params->GetTypeItem(shorty_pos).type_idx_; |
| ObjPtr<mirror::Class> arg_type = method->GetDexCache()->GetResolvedType(type_idx); |
| if (arg_type == nullptr) { |
| StackHandleScope<1> hs(self); |
| // Preserve o since it is used below and GetClassFromTypeIndex may cause thread |
| // suspension. |
| HandleWrapperObjPtr<mirror::Object> h = hs.NewHandleWrapper(&o); |
| arg_type = method->ResolveClassFromTypeIndex(type_idx); |
| if (arg_type == nullptr) { |
| CHECK(self->IsExceptionPending()); |
| return false; |
| } |
| } |
| if (!o->VerifierInstanceOf(arg_type)) { |
| // This should never happen. |
| std::string temp1, temp2; |
| self->ThrowNewExceptionF("Ljava/lang/InternalError;", |
| "Invoking %s with bad arg %d, type '%s' not instance of '%s'", |
| new_shadow_frame->GetMethod()->GetName(), shorty_pos, |
| o->GetClass()->GetDescriptor(&temp1), |
| arg_type->GetDescriptor(&temp2)); |
| return false; |
| } |
| } |
| new_shadow_frame->SetVRegReference(dest_reg, o.Ptr()); |
| break; |
| } |
| // Handle doubles and longs. 2 consecutive virtual register slots. |
| case 'J': case 'D': { |
| uint64_t wide_value = |
| (static_cast<uint64_t>(shadow_frame.GetVReg(src_reg + 1)) << BitSizeOf<uint32_t>()) | |
| static_cast<uint32_t>(shadow_frame.GetVReg(src_reg)); |
| new_shadow_frame->SetVRegLong(dest_reg, wide_value); |
| // Skip the next virtual register slot since we already used it. |
| ++dest_reg; |
| ++arg_offset; |
| break; |
| } |
| // Handle all other primitives that are always 1 virtual register slot. |
| default: |
| new_shadow_frame->SetVReg(dest_reg, shadow_frame.GetVReg(src_reg)); |
| break; |
| } |
| } |
| } else { |
| if (is_range) { |
| DCHECK_EQ(num_regs, first_dest_reg + number_of_inputs); |
| } |
| |
| CopyRegisters<is_range>(shadow_frame, |
| new_shadow_frame, |
| arg, |
| vregC, |
| first_dest_reg, |
| number_of_inputs); |
| self->EndAssertNoThreadSuspension(old_cause); |
| } |
| |
| PerformCall(self, |
| code_item, |
| shadow_frame.GetMethod(), |
| first_dest_reg, |
| new_shadow_frame, |
| result, |
| use_interpreter_entrypoint); |
| |
| if (string_init && !self->IsExceptionPending()) { |
| SetStringInitValueToAllAliases(&shadow_frame, string_init_vreg_this, *result); |
| } |
| |
| return !self->IsExceptionPending(); |
| } |
| |
| template<bool is_range, bool do_assignability_check> |
| bool DoCall(ArtMethod* called_method, Thread* self, ShadowFrame& shadow_frame, |
| const Instruction* inst, uint16_t inst_data, JValue* result) { |
| // Argument word count. |
| const uint16_t number_of_inputs = |
| (is_range) ? inst->VRegA_3rc(inst_data) : inst->VRegA_35c(inst_data); |
| |
| // TODO: find a cleaner way to separate non-range and range information without duplicating |
| // code. |
| uint32_t arg[Instruction::kMaxVarArgRegs] = {}; // only used in invoke-XXX. |
| uint32_t vregC = 0; |
| if (is_range) { |
| vregC = inst->VRegC_3rc(); |
| } else { |
| vregC = inst->VRegC_35c(); |
| inst->GetVarArgs(arg, inst_data); |
| } |
| |
| return DoCallCommon<is_range, do_assignability_check>( |
| called_method, self, shadow_frame, |
| result, number_of_inputs, arg, vregC); |
| } |
| |
| template <bool is_range, bool do_access_check, bool transaction_active> |
| bool DoFilledNewArray(const Instruction* inst, |
| const ShadowFrame& shadow_frame, |
| Thread* self, |
| JValue* result) { |
| DCHECK(inst->Opcode() == Instruction::FILLED_NEW_ARRAY || |
| inst->Opcode() == Instruction::FILLED_NEW_ARRAY_RANGE); |
| const int32_t length = is_range ? inst->VRegA_3rc() : inst->VRegA_35c(); |
| if (!is_range) { |
| // Checks FILLED_NEW_ARRAY's length does not exceed 5 arguments. |
| CHECK_LE(length, 5); |
| } |
| if (UNLIKELY(length < 0)) { |
| ThrowNegativeArraySizeException(length); |
| return false; |
| } |
| uint16_t type_idx = is_range ? inst->VRegB_3rc() : inst->VRegB_35c(); |
| ObjPtr<mirror::Class> array_class = ResolveVerifyAndClinit(dex::TypeIndex(type_idx), |
| shadow_frame.GetMethod(), |
| self, |
| false, |
| do_access_check); |
| if (UNLIKELY(array_class == nullptr)) { |
| DCHECK(self->IsExceptionPending()); |
| return false; |
| } |
| CHECK(array_class->IsArrayClass()); |
| ObjPtr<mirror::Class> component_class = array_class->GetComponentType(); |
| const bool is_primitive_int_component = component_class->IsPrimitiveInt(); |
| if (UNLIKELY(component_class->IsPrimitive() && !is_primitive_int_component)) { |
| if (component_class->IsPrimitiveLong() || component_class->IsPrimitiveDouble()) { |
| ThrowRuntimeException("Bad filled array request for type %s", |
| component_class->PrettyDescriptor().c_str()); |
| } else { |
| self->ThrowNewExceptionF("Ljava/lang/InternalError;", |
| "Found type %s; filled-new-array not implemented for anything but 'int'", |
| component_class->PrettyDescriptor().c_str()); |
| } |
| return false; |
| } |
| ObjPtr<mirror::Object> new_array = mirror::Array::Alloc<true>( |
| self, |
| array_class, |
| length, |
| array_class->GetComponentSizeShift(), |
| Runtime::Current()->GetHeap()->GetCurrentAllocator()); |
| if (UNLIKELY(new_array == nullptr)) { |
| self->AssertPendingOOMException(); |
| return false; |
| } |
| uint32_t arg[Instruction::kMaxVarArgRegs]; // only used in filled-new-array. |
| uint32_t vregC = 0; // only used in filled-new-array-range. |
| if (is_range) { |
| vregC = inst->VRegC_3rc(); |
| } else { |
| inst->GetVarArgs(arg); |
| } |
| for (int32_t i = 0; i < length; ++i) { |
| size_t src_reg = is_range ? vregC + i : arg[i]; |
| if (is_primitive_int_component) { |
| new_array->AsIntArray()->SetWithoutChecks<transaction_active>( |
| i, shadow_frame.GetVReg(src_reg)); |
| } else { |
| new_array->AsObjectArray<mirror::Object>()->SetWithoutChecks<transaction_active>( |
| i, shadow_frame.GetVRegReference(src_reg)); |
| } |
| } |
| |
| result->SetL(new_array); |
| return true; |
| } |
| |
| // TODO: Use ObjPtr here. |
| template<typename T> |
| static void RecordArrayElementsInTransactionImpl(mirror::PrimitiveArray<T>* array, |
| int32_t count) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| Runtime* runtime = Runtime::Current(); |
| for (int32_t i = 0; i < count; ++i) { |
| runtime->RecordWriteArray(array, i, array->GetWithoutChecks(i)); |
| } |
| } |
| |
| void RecordArrayElementsInTransaction(ObjPtr<mirror::Array> array, int32_t count) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK(Runtime::Current()->IsActiveTransaction()); |
| DCHECK(array != nullptr); |
| DCHECK_LE(count, array->GetLength()); |
| Primitive::Type primitive_component_type = array->GetClass()->GetComponentType()->GetPrimitiveType(); |
| switch (primitive_component_type) { |
| case Primitive::kPrimBoolean: |
| RecordArrayElementsInTransactionImpl(array->AsBooleanArray(), count); |
| break; |
| case Primitive::kPrimByte: |
| RecordArrayElementsInTransactionImpl(array->AsByteArray(), count); |
| break; |
| case Primitive::kPrimChar: |
| RecordArrayElementsInTransactionImpl(array->AsCharArray(), count); |
| break; |
| case Primitive::kPrimShort: |
| RecordArrayElementsInTransactionImpl(array->AsShortArray(), count); |
| break; |
| case Primitive::kPrimInt: |
| RecordArrayElementsInTransactionImpl(array->AsIntArray(), count); |
| break; |
| case Primitive::kPrimFloat: |
| RecordArrayElementsInTransactionImpl(array->AsFloatArray(), count); |
| break; |
| case Primitive::kPrimLong: |
| RecordArrayElementsInTransactionImpl(array->AsLongArray(), count); |
| break; |
| case Primitive::kPrimDouble: |
| RecordArrayElementsInTransactionImpl(array->AsDoubleArray(), count); |
| break; |
| default: |
| LOG(FATAL) << "Unsupported primitive type " << primitive_component_type |
| << " in fill-array-data"; |
| break; |
| } |
| } |
| |
| // Explicit DoCall template function declarations. |
| #define EXPLICIT_DO_CALL_TEMPLATE_DECL(_is_range, _do_assignability_check) \ |
| template REQUIRES_SHARED(Locks::mutator_lock_) \ |
| bool DoCall<_is_range, _do_assignability_check>(ArtMethod* method, Thread* self, \ |
| ShadowFrame& shadow_frame, \ |
| const Instruction* inst, uint16_t inst_data, \ |
| JValue* result) |
| EXPLICIT_DO_CALL_TEMPLATE_DECL(false, false); |
| EXPLICIT_DO_CALL_TEMPLATE_DECL(false, true); |
| EXPLICIT_DO_CALL_TEMPLATE_DECL(true, false); |
| EXPLICIT_DO_CALL_TEMPLATE_DECL(true, true); |
| #undef EXPLICIT_DO_CALL_TEMPLATE_DECL |
| |
| // Explicit DoInvokeCustom template function declarations. |
| #define EXPLICIT_DO_INVOKE_CUSTOM_TEMPLATE_DECL(_is_range) \ |
| template REQUIRES_SHARED(Locks::mutator_lock_) \ |
| bool DoInvokeCustom<_is_range>( \ |
| Thread* self, ShadowFrame& shadow_frame, const Instruction* inst, \ |
| uint16_t inst_data, JValue* result) |
| EXPLICIT_DO_INVOKE_CUSTOM_TEMPLATE_DECL(false); |
| EXPLICIT_DO_INVOKE_CUSTOM_TEMPLATE_DECL(true); |
| #undef EXPLICIT_DO_INVOKE_CUSTOM_TEMPLATE_DECL |
| |
| // Explicit DoInvokePolymorphic template function declarations. |
| #define EXPLICIT_DO_INVOKE_POLYMORPHIC_TEMPLATE_DECL(_is_range) \ |
| template REQUIRES_SHARED(Locks::mutator_lock_) \ |
| bool DoInvokePolymorphic<_is_range>( \ |
| Thread* self, ShadowFrame& shadow_frame, const Instruction* inst, \ |
| uint16_t inst_data, JValue* result) |
| EXPLICIT_DO_INVOKE_POLYMORPHIC_TEMPLATE_DECL(false); |
| EXPLICIT_DO_INVOKE_POLYMORPHIC_TEMPLATE_DECL(true); |
| #undef EXPLICIT_DO_INVOKE_POLYMORPHIC_TEMPLATE_DECL |
| |
| // Explicit DoFilledNewArray template function declarations. |
| #define EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL(_is_range_, _check, _transaction_active) \ |
| template REQUIRES_SHARED(Locks::mutator_lock_) \ |
| bool DoFilledNewArray<_is_range_, _check, _transaction_active>(const Instruction* inst, \ |
| const ShadowFrame& shadow_frame, \ |
| Thread* self, JValue* result) |
| #define EXPLICIT_DO_FILLED_NEW_ARRAY_ALL_TEMPLATE_DECL(_transaction_active) \ |
| EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL(false, false, _transaction_active); \ |
| EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL(false, true, _transaction_active); \ |
| EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL(true, false, _transaction_active); \ |
| EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL(true, true, _transaction_active) |
| EXPLICIT_DO_FILLED_NEW_ARRAY_ALL_TEMPLATE_DECL(false); |
| EXPLICIT_DO_FILLED_NEW_ARRAY_ALL_TEMPLATE_DECL(true); |
| #undef EXPLICIT_DO_FILLED_NEW_ARRAY_ALL_TEMPLATE_DECL |
| #undef EXPLICIT_DO_FILLED_NEW_ARRAY_TEMPLATE_DECL |
| |
| } // namespace interpreter |
| } // namespace art |