1 /*
2  * Copyright (C) 2011 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 "shadow_frame.h"
18 
19 #include "art_method-inl.h"
20 
21 namespace art {
22 
GetThisObject() const23 mirror::Object* ShadowFrame::GetThisObject() const {
24   ArtMethod* m = GetMethod();
25   if (m->IsStatic()) {
26     return nullptr;
27   } else if (m->IsNative()) {
28     return GetVRegReference(0);
29   } else {
30     CHECK(m->GetCodeItem() != nullptr) << ArtMethod::PrettyMethod(m);
31     CodeItemDataAccessor accessor(m->DexInstructionData());
32     uint16_t reg = accessor.RegistersSize() - accessor.InsSize();
33     return GetVRegReference(reg);
34   }
35 }
36 
GetThisObject(uint16_t num_ins) const37 mirror::Object* ShadowFrame::GetThisObject(uint16_t num_ins) const {
38   ArtMethod* m = GetMethod();
39   if (m->IsStatic()) {
40     return nullptr;
41   } else {
42     return GetVRegReference(NumberOfVRegs() - num_ins);
43   }
44 }
45 
46 }  // namespace art
47