C++ SymbolListT::push_back方法代码示例

static void dumpSymbolNamesFromObject(SymbolicFile *Obj, bool printName) {
  basic_symbol_iterator IBegin = Obj->symbol_begin();
  basic_symbol_iterator IEnd = Obj->symbol_end();
  if (DynamicSyms) {
    if (!Obj->isELF()) {
      error("File format has no dynamic symbol table", Obj->getFileName());
      return;
    }
    std::pair<symbol_iterator, symbol_iterator> IDyn =
        getELFDynamicSymbolIterators(Obj);
    IBegin = IDyn.first;
    IEnd = IDyn.second;
  }
  std::string NameBuffer;
  raw_string_ostream OS(NameBuffer);
  for (basic_symbol_iterator I = IBegin; I != IEnd; ++I) {
    uint32_t SymFlags = I->getFlags();
    if (!DebugSyms && (SymFlags & SymbolRef::SF_FormatSpecific))
      continue;
    if (WithoutAliases) {
      if (IRObjectFile *IR = dyn_cast<IRObjectFile>(Obj)) {
        const GlobalValue *GV = IR->getSymbolGV(I->getRawDataRefImpl());
        if (GV && isa<GlobalAlias>(GV))
          continue;
      }
    }
    NMSymbol S;
    S.Size = UnknownAddressOrSize;
    S.Address = UnknownAddressOrSize;
    if ((PrintSize || SizeSort) && isa<ObjectFile>(Obj)) {
      symbol_iterator SymI = I;
      if (error(SymI->getSize(S.Size)))
        break;
    }
    if (PrintAddress && isa<ObjectFile>(Obj))
      if (error(symbol_iterator(I)->getAddress(S.Address)))
        break;
    S.TypeChar = getNMTypeChar(Obj, I);
    if (error(I->printName(OS)))
      break;
    OS << '\0';
    S.Symb = I->getRawDataRefImpl();
    SymbolList.push_back(S);
  }

  OS.flush();
  const char *P = NameBuffer.c_str();
  for (unsigned I = 0; I < SymbolList.size(); ++I) {
    SymbolList[I].Name = P;
    P += strlen(P) + 1;
  }

  CurrentFilename = Obj->getFileName();
  sortAndPrintSymbolList(Obj, printName);
}

static void dumpSymbolNamesFromObject(SymbolicFile &Obj, bool printName,
                                      std::string ArchiveName = std::string(),
                                      std::string ArchitectureName =
                                        std::string()) {
  basic_symbol_iterator IBegin = Obj.symbol_begin();
  basic_symbol_iterator IEnd = Obj.symbol_end();
  if (DynamicSyms) {
    if (!Obj.isELF()) {
      error("File format has no dynamic symbol table", Obj.getFileName());
      return;
    }
    std::pair<symbol_iterator, symbol_iterator> IDyn =
        getELFDynamicSymbolIterators(&Obj);
    IBegin = IDyn.first;
    IEnd = IDyn.second;
  }
  std::string NameBuffer;
  raw_string_ostream OS(NameBuffer);
  // If a "-s segname sectname" option was specified and this is a Mach-O
  // file get the section number for that section in this object file.
  unsigned int Nsect = 0;
  MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(&Obj);
  if (SegSect.size() != 0 && MachO) {
    Nsect = getNsectForSegSect(MachO);
    // If this section is not in the object file no symbols are printed.
    if (Nsect == 0)
      return;
  }
  for (basic_symbol_iterator I = IBegin; I != IEnd; ++I) {
    uint32_t SymFlags = I->getFlags();
    if (!DebugSyms && (SymFlags & SymbolRef::SF_FormatSpecific))
      continue;
    if (WithoutAliases) {
      if (IRObjectFile *IR = dyn_cast<IRObjectFile>(&Obj)) {
        const GlobalValue *GV = IR->getSymbolGV(I->getRawDataRefImpl());
        if (GV && isa<GlobalAlias>(GV))
          continue;
      }
    }
    // If a "-s segname sectname" option was specified and this is a Mach-O
    // file and this section appears in this file, Nsect will be non-zero then
    // see if this symbol is a symbol from that section and if not skip it.
    if (Nsect && Nsect != getNsectInMachO(*MachO, I))
      continue;
    NMSymbol S;
    S.Size = UnknownAddressOrSize;
    S.Address = UnknownAddressOrSize;
    if ((PrintSize || SizeSort) && isa<ObjectFile>(Obj)) {
      symbol_iterator SymI = I;
      if (error(SymI->getSize(S.Size)))
        break;
    }
    if (PrintAddress && isa<ObjectFile>(Obj))
      if (error(symbol_iterator(I)->getAddress(S.Address)))
        break;
    S.TypeChar = getNMTypeChar(Obj, I);
    if (error(I->printName(OS)))
      break;
    OS << '\0';
    S.Symb = I->getRawDataRefImpl();
    SymbolList.push_back(S);
  }

  OS.flush();
  const char *P = NameBuffer.c_str();
  for (unsigned I = 0; I < SymbolList.size(); ++I) {
    SymbolList[I].Name = P;
    P += strlen(P) + 1;
  }

  CurrentFilename = Obj.getFileName();
  sortAndPrintSymbolList(Obj, printName, ArchiveName, ArchitectureName);
}

static void dumpSymbolNamesFromObject(SymbolicFile &Obj, bool printName,
                                      std::string ArchiveName = std::string(),
                                      std::string ArchitectureName =
                                        std::string()) {
  auto Symbols = Obj.symbols();
  if (DynamicSyms) {
    const auto *E = dyn_cast<ELFObjectFileBase>(&Obj);
    if (!E) {
      error("File format has no dynamic symbol table", Obj.getFileName());
      return;
    }
    auto DynSymbols = E->getDynamicSymbolIterators();
    Symbols =
        make_range<basic_symbol_iterator>(DynSymbols.begin(), DynSymbols.end());
  }
  std::string NameBuffer;
  raw_string_ostream OS(NameBuffer);
  // If a "-s segname sectname" option was specified and this is a Mach-O
  // file get the section number for that section in this object file.
  unsigned int Nsect = 0;
  MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(&Obj);
  if (SegSect.size() != 0 && MachO) {
    Nsect = getNsectForSegSect(MachO);
    // If this section is not in the object file no symbols are printed.
    if (Nsect == 0)
      return;
  }
  for (BasicSymbolRef Sym : Symbols) {
    uint32_t SymFlags = Sym.getFlags();
    if (!DebugSyms && (SymFlags & SymbolRef::SF_FormatSpecific))
      continue;
    if (WithoutAliases) {
      if (IRObjectFile *IR = dyn_cast<IRObjectFile>(&Obj)) {
        const GlobalValue *GV = IR->getSymbolGV(Sym.getRawDataRefImpl());
        if (GV && isa<GlobalAlias>(GV))
          continue;
      }
    }
    // If a "-s segname sectname" option was specified and this is a Mach-O
    // file and this section appears in this file, Nsect will be non-zero then
    // see if this symbol is a symbol from that section and if not skip it.
    if (Nsect && Nsect != getNsectInMachO(*MachO, Sym))
      continue;
    NMSymbol S;
    S.Size = 0;
    S.Address = 0;
    if (PrintSize) {
      if (isa<ELFObjectFileBase>(&Obj))
        S.Size = ELFSymbolRef(Sym).getSize();
    }
    if (PrintAddress && isa<ObjectFile>(Obj)) {
      SymbolRef SymRef(Sym);
      ErrorOr<uint64_t> AddressOrErr = SymRef.getAddress();
      if (error(AddressOrErr.getError()))
        break;
      S.Address = *AddressOrErr;
    }
    S.TypeChar = getNMTypeChar(Obj, Sym);
    std::error_code EC = Sym.printName(OS);
    if (EC && MachO)
      OS << "bad string index";
    else 
      error(EC);
    OS << '\0';
    S.Sym = Sym;
    SymbolList.push_back(S);
  }

  OS.flush();
  const char *P = NameBuffer.c_str();
  for (unsigned I = 0; I < SymbolList.size(); ++I) {
    SymbolList[I].Name = P;
    P += strlen(P) + 1;
  }

  CurrentFilename = Obj.getFileName();
  sortAndPrintSymbolList(Obj, printName, ArchiveName, ArchitectureName);
}