Orion Hodson | 811bd5f | 2016-12-07 11:35:37 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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 | #ifndef ART_RUNTIME_COMMON_DEX_OPERATIONS_H_ |
| 18 | #define ART_RUNTIME_COMMON_DEX_OPERATIONS_H_ |
| 19 | |
| 20 | #include "art_field.h" |
| 21 | #include "art_method.h" |
| 22 | #include "class_linker.h" |
| 23 | #include "interpreter/unstarted_runtime.h" |
| 24 | #include "runtime.h" |
| 25 | #include "stack.h" |
| 26 | #include "thread.h" |
| 27 | |
| 28 | namespace art { |
| 29 | |
| 30 | namespace interpreter { |
| 31 | void ArtInterpreterToInterpreterBridge(Thread* self, |
| 32 | const DexFile::CodeItem* code_item, |
| 33 | ShadowFrame* shadow_frame, |
| 34 | JValue* result) |
| 35 | REQUIRES_SHARED(Locks::mutator_lock_); |
| 36 | |
| 37 | void ArtInterpreterToCompiledCodeBridge(Thread* self, |
| 38 | ArtMethod* caller, |
| 39 | const DexFile::CodeItem* code_item, |
| 40 | ShadowFrame* shadow_frame, |
| 41 | JValue* result); |
| 42 | } // namespace interpreter |
| 43 | |
| 44 | inline void PerformCall(Thread* self, |
| 45 | const DexFile::CodeItem* code_item, |
| 46 | ArtMethod* caller_method, |
| 47 | const size_t first_dest_reg, |
| 48 | ShadowFrame* callee_frame, |
| 49 | JValue* result) |
| 50 | REQUIRES_SHARED(Locks::mutator_lock_) { |
| 51 | if (LIKELY(Runtime::Current()->IsStarted())) { |
| 52 | ArtMethod* target = callee_frame->GetMethod(); |
| 53 | if (ClassLinker::ShouldUseInterpreterEntrypoint( |
| 54 | target, |
| 55 | target->GetEntryPointFromQuickCompiledCode())) { |
| 56 | interpreter::ArtInterpreterToInterpreterBridge(self, code_item, callee_frame, result); |
| 57 | } else { |
| 58 | interpreter::ArtInterpreterToCompiledCodeBridge( |
| 59 | self, caller_method, code_item, callee_frame, result); |
| 60 | } |
| 61 | } else { |
| 62 | interpreter::UnstartedRuntime::Invoke(self, code_item, callee_frame, result, first_dest_reg); |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | template<Primitive::Type field_type> |
| 67 | static ALWAYS_INLINE void DoFieldGetCommon(Thread* self, |
| 68 | const ShadowFrame& shadow_frame, |
| 69 | ObjPtr<mirror::Object> obj, |
| 70 | ArtField* field, |
| 71 | JValue* result) |
| 72 | REQUIRES_SHARED(Locks::mutator_lock_) { |
| 73 | field->GetDeclaringClass()->AssertInitializedOrInitializingInThread(self); |
| 74 | |
| 75 | // Report this field access to instrumentation if needed. |
| 76 | instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); |
| 77 | if (UNLIKELY(instrumentation->HasFieldReadListeners())) { |
| 78 | StackHandleScope<1> hs(self); |
| 79 | // Wrap in handle wrapper in case the listener does thread suspension. |
| 80 | HandleWrapperObjPtr<mirror::Object> h(hs.NewHandleWrapper(&obj)); |
| 81 | ObjPtr<mirror::Object> this_object; |
| 82 | if (!field->IsStatic()) { |
| 83 | this_object = obj; |
| 84 | } |
| 85 | instrumentation->FieldReadEvent(self, |
| 86 | this_object.Ptr(), |
| 87 | shadow_frame.GetMethod(), |
| 88 | shadow_frame.GetDexPC(), |
| 89 | field); |
| 90 | } |
| 91 | |
| 92 | switch (field_type) { |
| 93 | case Primitive::kPrimBoolean: |
| 94 | result->SetZ(field->GetBoolean(obj)); |
| 95 | break; |
| 96 | case Primitive::kPrimByte: |
| 97 | result->SetB(field->GetByte(obj)); |
| 98 | break; |
| 99 | case Primitive::kPrimChar: |
| 100 | result->SetC(field->GetChar(obj)); |
| 101 | break; |
| 102 | case Primitive::kPrimShort: |
| 103 | result->SetS(field->GetShort(obj)); |
| 104 | break; |
| 105 | case Primitive::kPrimInt: |
| 106 | result->SetI(field->GetInt(obj)); |
| 107 | break; |
| 108 | case Primitive::kPrimLong: |
| 109 | result->SetJ(field->GetLong(obj)); |
| 110 | break; |
| 111 | case Primitive::kPrimNot: |
| 112 | result->SetL(field->GetObject(obj)); |
| 113 | break; |
| 114 | case Primitive::kPrimVoid: |
| 115 | LOG(FATAL) << "Unreachable " << field_type; |
| 116 | break; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | template<Primitive::Type field_type, bool do_assignability_check, bool transaction_active> |
| 121 | ALWAYS_INLINE bool DoFieldPutCommon(Thread* self, |
| 122 | const ShadowFrame& shadow_frame, |
| 123 | ObjPtr<mirror::Object> obj, |
| 124 | ArtField* field, |
| 125 | const JValue& value) |
| 126 | REQUIRES_SHARED(Locks::mutator_lock_) { |
| 127 | field->GetDeclaringClass()->AssertInitializedOrInitializingInThread(self); |
| 128 | |
| 129 | // Report this field access to instrumentation if needed. Since we only have the offset of |
| 130 | // the field from the base of the object, we need to look for it first. |
| 131 | instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); |
| 132 | if (UNLIKELY(instrumentation->HasFieldWriteListeners())) { |
| 133 | StackHandleScope<1> hs(self); |
| 134 | // Wrap in handle wrapper in case the listener does thread suspension. |
| 135 | HandleWrapperObjPtr<mirror::Object> h(hs.NewHandleWrapper(&obj)); |
| 136 | ObjPtr<mirror::Object> this_object = field->IsStatic() ? nullptr : obj; |
| 137 | instrumentation->FieldWriteEvent(self, this_object.Ptr(), |
| 138 | shadow_frame.GetMethod(), |
| 139 | shadow_frame.GetDexPC(), |
| 140 | field, |
| 141 | value); |
| 142 | } |
| 143 | |
| 144 | switch (field_type) { |
| 145 | case Primitive::kPrimBoolean: |
| 146 | field->SetBoolean<transaction_active>(obj, value.GetZ()); |
| 147 | break; |
| 148 | case Primitive::kPrimByte: |
| 149 | field->SetByte<transaction_active>(obj, value.GetB()); |
| 150 | break; |
| 151 | case Primitive::kPrimChar: |
| 152 | field->SetChar<transaction_active>(obj, value.GetC()); |
| 153 | break; |
| 154 | case Primitive::kPrimShort: |
| 155 | field->SetShort<transaction_active>(obj, value.GetS()); |
| 156 | break; |
| 157 | case Primitive::kPrimInt: |
| 158 | field->SetInt<transaction_active>(obj, value.GetI()); |
| 159 | break; |
| 160 | case Primitive::kPrimLong: |
| 161 | field->SetLong<transaction_active>(obj, value.GetJ()); |
| 162 | break; |
| 163 | case Primitive::kPrimNot: { |
| 164 | ObjPtr<mirror::Object> reg = value.GetL(); |
| 165 | if (do_assignability_check && reg != nullptr) { |
| 166 | // FieldHelper::GetType can resolve classes, use a handle wrapper which will restore the |
| 167 | // object in the destructor. |
| 168 | ObjPtr<mirror::Class> field_class; |
| 169 | { |
| 170 | StackHandleScope<2> hs(self); |
| 171 | HandleWrapperObjPtr<mirror::Object> h_reg(hs.NewHandleWrapper(®)); |
| 172 | HandleWrapperObjPtr<mirror::Object> h_obj(hs.NewHandleWrapper(&obj)); |
| 173 | field_class = field->GetType<true>(); |
| 174 | } |
| 175 | if (!reg->VerifierInstanceOf(field_class.Ptr())) { |
| 176 | // This should never happen. |
| 177 | std::string temp1, temp2, temp3; |
| 178 | self->ThrowNewExceptionF("Ljava/lang/InternalError;", |
| 179 | "Put '%s' that is not instance of field '%s' in '%s'", |
| 180 | reg->GetClass()->GetDescriptor(&temp1), |
| 181 | field_class->GetDescriptor(&temp2), |
| 182 | field->GetDeclaringClass()->GetDescriptor(&temp3)); |
| 183 | return false; |
| 184 | } |
| 185 | } |
| 186 | field->SetObj<transaction_active>(obj, reg); |
| 187 | break; |
| 188 | } |
| 189 | case Primitive::kPrimVoid: { |
| 190 | LOG(FATAL) << "Unreachable " << field_type; |
| 191 | break; |
| 192 | } |
| 193 | } |
| 194 | return true; |
| 195 | } |
| 196 | |
| 197 | } // namespace art |
| 198 | |
| 199 | #endif // ART_RUNTIME_COMMON_DEX_OPERATIONS_H_ |