77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
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/*
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* Copyright (C) 2016 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_DWARF_MEMORY_H
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#define _LIBUNWINDSTACK_DWARF_MEMORY_H
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#include <stdint.h>
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namespace unwindstack {
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// Forward declarations.
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class Memory;
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class DwarfMemory {
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public:
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DwarfMemory(Memory* memory) : memory_(memory) {}
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virtual ~DwarfMemory() = default;
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bool ReadBytes(void* dst, size_t num_bytes);
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template <typename SignedType>
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bool ReadSigned(uint64_t* value);
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bool ReadULEB128(uint64_t* value);
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bool ReadSLEB128(int64_t* value);
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template <typename AddressType>
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size_t GetEncodedSize(uint8_t encoding);
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bool AdjustEncodedValue(uint8_t encoding, uint64_t* value);
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template <typename AddressType>
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bool ReadEncodedValue(uint8_t encoding, uint64_t* value);
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uint64_t cur_offset() { return cur_offset_; }
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void set_cur_offset(uint64_t cur_offset) { cur_offset_ = cur_offset; }
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void set_pc_offset(int64_t offset) { pc_offset_ = offset; }
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void clear_pc_offset() { pc_offset_ = INT64_MAX; }
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void set_data_offset(uint64_t offset) { data_offset_ = offset; }
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void clear_data_offset() { data_offset_ = static_cast<uint64_t>(-1); }
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void set_func_offset(uint64_t offset) { func_offset_ = offset; }
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void clear_func_offset() { func_offset_ = static_cast<uint64_t>(-1); }
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void set_text_offset(uint64_t offset) { text_offset_ = offset; }
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void clear_text_offset() { text_offset_ = static_cast<uint64_t>(-1); }
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private:
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Memory* memory_;
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uint64_t cur_offset_ = 0;
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int64_t pc_offset_ = INT64_MAX;
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uint64_t data_offset_ = static_cast<uint64_t>(-1);
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uint64_t func_offset_ = static_cast<uint64_t>(-1);
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uint64_t text_offset_ = static_cast<uint64_t>(-1);
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};
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} // namespace unwindstack
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#endif // _LIBUNWINDSTACK_DWARF_MEMORY_H
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