1 /*
2  * Copyright (C) 2019 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 _LIBUNWINDSTACK_MEMORY_FILE_AT_OFFSET_H
18 #define _LIBUNWINDSTACK_MEMORY_FILE_AT_OFFSET_H
19 
20 #include <stdint.h>
21 
22 #include <unwindstack/Memory.h>
23 
24 namespace unwindstack {
25 
26 class MemoryFileAtOffset : public Memory {
27  public:
28   MemoryFileAtOffset() = default;
29   virtual ~MemoryFileAtOffset();
30 
31   bool Init(const std::string& file, uint64_t offset, uint64_t size = UINT64_MAX);
32 
33   size_t Read(uint64_t addr, void* dst, size_t size) override;
34 
Size()35   size_t Size() { return size_; }
36 
37   void Clear() override;
38 
39  protected:
40   size_t size_ = 0;
41   size_t offset_ = 0;
42   uint8_t* data_ = nullptr;
43 };
44 
45 }  // namespace unwindstack
46 
47 #endif  // _LIBUNWINDSTACK_MEMORY_FILE_AT_OFFSET_H
48