Method cmELFInternalImpl

Source/cmELF.cxx:405–466

template <class Types>
cmELFInternalImpl<Types>::cmELFInternalImpl(cmELF* external,
                                            std::unique_ptr<std::istream> fin,
                                            ByteOrderType order)
  : cmELFInternal(external, std::move(fin), order)
{
  // Read the main header.
  if (!this->Read(this->ELFHeader)) {
    this->SetErrorMessage("Failed to read main ELF header.");
    return;
  }

  // Determine the ELF file type.
  switch (this->ELFHeader.e_type) {
    case ET_NONE:
      this->SetErrorMessage("ELF file type is NONE.");
      return;
    case ET_REL:
      this->ELFType = cmELF::FileTypeRelocatableObject;
      break;
    case ET_EXEC:
      this->ELFType = cmELF::FileTypeExecutable;
      break;
    case ET_DYN:
      this->ELFType = cmELF::FileTypeSharedLibrary;
      break;
    case ET_CORE:
      this->ELFType = cmELF::FileTypeCore;
      break;
    default: {
      unsigned int eti = static_cast<unsigned int>(this->ELFHeader.e_type);
      if (eti >= ET_LOOS && eti <= ET_HIOS) {
        this->ELFType = cmELF::FileTypeSpecificOS;
        break;
      }
      if (eti >= ET_LOPROC && eti <= ET_HIPROC) {
        this->ELFType = cmELF::FileTypeSpecificProc;
        break;
      }
      std::ostringstream e;
      e << "Unknown ELF file type " << eti;
      this->SetErrorMessage(e.str().c_str());
      return;
    }
  }

  this->Machine = this->ELFHeader.e_machine;

  // Load the section headers.
  std::size_t const minSections = 1;
  std::size_t numSections = this->ELFHeader.e_shnum;
  this->SectionHeaders.resize(std::max(numSections, minSections));
  if (!this->LoadSectionHeader(0)) {
    return;
  }
  numSections = this->GetNumberOfSections();
  this->SectionHeaders.resize(std::max(numSections, minSections));
  for (std::size_t i = 1; i < numSections; ++i) {
    if (!this->LoadSectionHeader(i)) {