/*

 * Copyright (C) 2016 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.

 */

#pragma once

#include <stdint.h>

#include <memory>

#include <unordered_map>

#include <vector>

#include <unwindstack/DwarfSection.h>

namespace unwindstack {

// Forward declarations.

class Memory;

struct SectionInfo;

template <typename AddressType>

class DwarfEhFrameWithHdr : public DwarfSectionImpl<AddressType> {

 public:

  // Add these so that the protected members of DwarfSectionImpl

  // can be accessed without needing a this->.

  using DwarfSectionImpl<AddressType>::memory_;

  using DwarfSectionImpl<AddressType>::last_error_;

  struct FdeInfo {

    AddressType pc;

    uint64_t offset;

  };

  DwarfEhFrameWithHdr(std::shared_ptr<Memory>& memory) : DwarfSectionImpl<AddressType>(memory) {}

unwindstack::DwarfEhFrameWithHdr<unsigned int>::DwarfEhFrameWithHdr(std::__1::shared_ptr<unwindstack::Memory>&)

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  DwarfEhFrameWithHdr(std::shared_ptr<Memory>& memory) : DwarfSectionImpl<AddressType>(memory) {}

unwindstack::DwarfEhFrameWithHdr<unsigned long>::DwarfEhFrameWithHdr(std::__1::shared_ptr<unwindstack::Memory>&)

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1.63k

  DwarfEhFrameWithHdr(std::shared_ptr<Memory>& memory) : DwarfSectionImpl<AddressType>(memory) {}

  virtual ~DwarfEhFrameWithHdr() = default;

unwindstack::DwarfEhFrameWithHdr<unsigned int>::~DwarfEhFrameWithHdr()

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21

  virtual ~DwarfEhFrameWithHdr() = default;

unwindstack::DwarfEhFrameWithHdr<unsigned long>::~DwarfEhFrameWithHdr()

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1.63k

  virtual ~DwarfEhFrameWithHdr() = default;

  uint64_t GetCieOffsetFromFde32(uint32_t pointer) override {

    return memory_.cur_offset() - pointer - 4;

  }

Unexecuted instantiation: unwindstack::DwarfEhFrameWithHdr<unsigned int>::GetCieOffsetFromFde32(unsigned int)

unwindstack::DwarfEhFrameWithHdr<unsigned long>::GetCieOffsetFromFde32(unsigned int)

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222

  uint64_t GetCieOffsetFromFde32(uint32_t pointer) override {

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222

    return memory_.cur_offset() - pointer - 4;

51

222

  }

  uint64_t GetCieOffsetFromFde64(uint64_t pointer) override {

    return memory_.cur_offset() - pointer - 8;

  }

Unexecuted instantiation: unwindstack::DwarfEhFrameWithHdr<unsigned int>::GetCieOffsetFromFde64(unsigned long)

unwindstack::DwarfEhFrameWithHdr<unsigned long>::GetCieOffsetFromFde64(unsigned long)

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53

1.03k

  uint64_t GetCieOffsetFromFde64(uint64_t pointer) override {

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1.03k

    return memory_.cur_offset() - pointer - 8;

55

1.03k

  }

  uint64_t AdjustPcFromFde(uint64_t pc) override {

    // The eh_frame uses relative pcs.

    return pc + memory_.cur_offset() - 4;

  }

Unexecuted instantiation: unwindstack::DwarfEhFrameWithHdr<unsigned int>::AdjustPcFromFde(unsigned long)

unwindstack::DwarfEhFrameWithHdr<unsigned long>::AdjustPcFromFde(unsigned long)

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948

  uint64_t AdjustPcFromFde(uint64_t pc) override {

58

    // The eh_frame uses relative pcs.

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948

    return pc + memory_.cur_offset() - 4;

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948

  }

  bool EhFrameInit(const SectionInfo& info);

  bool Init(const SectionInfo& info) override;

  const DwarfFde* GetFdeFromPc(uint64_t pc) override;

  bool GetFdeOffsetFromPc(uint64_t pc, uint64_t* fde_offset);

  const FdeInfo* GetFdeInfoFromIndex(size_t index);

  void GetFdes(std::vector<const DwarfFde*>* fdes) override;

 protected:

  uint8_t version_ = 0;

  uint8_t table_encoding_ = 0;

  size_t table_entry_size_ = 0;

  uint64_t hdr_entries_offset_ = 0;

  uint64_t hdr_entries_data_offset_ = 0;

  uint64_t hdr_section_bias_ = 0;

  uint64_t fde_count_ = 0;

  std::unordered_map<uint64_t, FdeInfo> fde_info_;

};

}  // namespace unwindstack