Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//===- DWARFDebugArangeSet.h ------------------------------------*- C++ -*-===//

//

// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

// See https://llvm.org/LICENSE.txt for license information.

// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_DEBUGINFO_DWARF_DWARFDEBUGARANGESET_H

#define LLVM_DEBUGINFO_DWARF_DWARFDEBUGARANGESET_H

#include "llvm/ADT/iterator_range.h"

#include "llvm/BinaryFormat/Dwarf.h"

#include "llvm/Support/Error.h"

#include <cstdint>

#include <vector>

namespace llvm {

class raw_ostream;

class DWARFDataExtractor;

class DWARFDebugArangeSet {

public:

  struct Header {

    /// The total length of the entries for that set, not including the length

    /// field itself.

    uint64_t Length;

    /// The DWARF format of the set.

    dwarf::DwarfFormat Format;

    /// The offset from the beginning of the .debug_info section of the

    /// compilation unit entry referenced by the table.

    uint64_t CuOffset;

    /// The DWARF version number.

    uint16_t Version;

    /// The size in bytes of an address on the target architecture. For segmented

    /// addressing, this is the size of the offset portion of the address.

    uint8_t AddrSize;

    /// The size in bytes of a segment descriptor on the target architecture.

    /// If the target system uses a flat address space, this value is 0.

    uint8_t SegSize;

  };

  struct Descriptor {

    uint64_t Address;

    uint64_t Length;

    uint64_t getEndAddress() const { return Address + Length; }

    void dump(raw_ostream &OS, uint32_t AddressSize) const;

  };

private:

  using DescriptorColl = std::vector<Descriptor>;

  using desc_iterator_range = iterator_range<DescriptorColl::const_iterator>;

  uint64_t Offset;

  Header HeaderData;

  DescriptorColl ArangeDescriptors;

public:

  DWARFDebugArangeSet() { clear(); }

  void clear();

  Error extract(DWARFDataExtractor data, uint64_t *offset_ptr,

                function_ref<void(Error)> WarningHandler);

  void dump(raw_ostream &OS) const;

  uint64_t getCompileUnitDIEOffset() const { return HeaderData.CuOffset; }

  const Header &getHeader() const { return HeaderData; }

  desc_iterator_range descriptors() const {

    return desc_iterator_range(ArangeDescriptors.begin(),

                               ArangeDescriptors.end());

  }

};

} // end namespace llvm

#endif // LLVM_DEBUGINFO_DWARF_DWARFDEBUGARANGESET_H