67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _LIBUNWINDSTACK_MEMORY_RANGE_H
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#define _LIBUNWINDSTACK_MEMORY_RANGE_H
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#include <stdint.h>
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#include <map>
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#include <memory>
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#include <string>
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#include <unwindstack/Memory.h>
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namespace unwindstack {
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// MemoryRange maps one address range onto another.
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// The range [src_begin, src_begin + length) in the underlying Memory is mapped onto offset,
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// such that range.read(offset) is equivalent to underlying.read(src_begin).
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class MemoryRange : public Memory {
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public:
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MemoryRange(const std::shared_ptr<Memory>& memory, uint64_t begin, uint64_t length,
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uint64_t offset);
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virtual ~MemoryRange() = default;
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size_t Read(uint64_t addr, void* dst, size_t size) override;
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uint64_t offset() { return offset_; }
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uint64_t length() { return length_; }
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private:
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std::shared_ptr<Memory> memory_;
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uint64_t begin_;
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uint64_t length_;
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uint64_t offset_;
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};
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class MemoryRanges : public Memory {
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public:
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MemoryRanges() = default;
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virtual ~MemoryRanges() = default;
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void Insert(MemoryRange* memory);
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size_t Read(uint64_t addr, void* dst, size_t size) override;
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private:
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std::map<uint64_t, std::unique_ptr<MemoryRange>> maps_;
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};
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} // namespace unwindstack
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#endif // _LIBUNWINDSTACK_MEMORY_RANGE_H
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