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Diffstat (limited to 'libunwindstack/MemoryRange.h')
-rw-r--r-- | libunwindstack/MemoryRange.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/libunwindstack/MemoryRange.h b/libunwindstack/MemoryRange.h new file mode 100644 index 000000000..3b4ab5c91 --- /dev/null +++ b/libunwindstack/MemoryRange.h @@ -0,0 +1,66 @@ +/* + * Copyright (C) 2019 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. + */ + +#ifndef _LIBUNWINDSTACK_MEMORY_RANGE_H +#define _LIBUNWINDSTACK_MEMORY_RANGE_H + +#include <stdint.h> + +#include <map> +#include <memory> +#include <string> + +#include <unwindstack/Memory.h> + +namespace unwindstack { + +// MemoryRange maps one address range onto another. +// The range [src_begin, src_begin + length) in the underlying Memory is mapped onto offset, +// such that range.read(offset) is equivalent to underlying.read(src_begin). +class MemoryRange : public Memory { + public: + MemoryRange(const std::shared_ptr<Memory>& memory, uint64_t begin, uint64_t length, + uint64_t offset); + virtual ~MemoryRange() = default; + + size_t Read(uint64_t addr, void* dst, size_t size) override; + + uint64_t offset() { return offset_; } + uint64_t length() { return length_; } + + private: + std::shared_ptr<Memory> memory_; + uint64_t begin_; + uint64_t length_; + uint64_t offset_; +}; + +class MemoryRanges : public Memory { + public: + MemoryRanges() = default; + virtual ~MemoryRanges() = default; + + void Insert(MemoryRange* memory); + + size_t Read(uint64_t addr, void* dst, size_t size) override; + + private: + std::map<uint64_t, std::unique_ptr<MemoryRange>> maps_; +}; + +} // namespace unwindstack + +#endif // _LIBUNWINDSTACK_MEMORY_RANGE_H |