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// binary.h -- binary input files for gold   -*- C++ -*-

// Copyright 2008 Free Software Foundation, Inc.

// Written by Ian Lance Taylor <iant@google.com>.

// This file is part of gold.

// This program is free software; you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation; either version 3 of the License, or

// (at your option) any later version.

// This program is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License

// along with this program; if not, write to the Free Software

// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

// MA 02110-1301, USA.

// Support binary input files by making them look like an ELF file.

#ifndef GOLD_BINARY_H

#define GOLD_BINARY_H

#include <string>

#include "elfcpp.h"

namespace gold

{

class Task;

template<typename Stringpool_char>

class Stringpool_template;

// This class takes a file name and creates a buffer which looks like

// an ELF file read into memory.

class Binary_to_elf

{

 public:

  Binary_to_elf(elfcpp::EM machine, int size, bool big_endian,

                const std::string& filename);

  ~Binary_to_elf();

  // Read contents and create an ELF buffer.  Return true if this

  // succeeds, false otherwise.

  bool

  convert(const Task*);

  // Return a pointer to the contents of the ELF file.

  const unsigned char*

  converted_data() const

  { return this->data_; }

  // Return a pointer to the contents of the ELF file and let the

  // caller take charge of it.  It was allocated using new[].

  unsigned char*

  converted_data_leak()

  {

    unsigned char* ret = this->data_;

    this->data_ = NULL;

    return ret;

  }

  // Return the size of the ELF file.

  size_t

  converted_size() const

  { return this->filesize_; }

 private:

  Binary_to_elf(const Binary_to_elf&);

  Binary_to_elf& operator=(const Binary_to_elf&);

  template<int size, bool big_endian>

  bool

  sized_convert(const Task*);

  template<int size, bool big_endian>

  void

  write_file_header(unsigned char**);

  template<int size, bool big_endian>

  void

  write_section_header(const char*, const Stringpool_template<char>*,

                       elfcpp::SHT, unsigned int, section_size_type,

                       section_size_type, unsigned int, unsigned int,

                       unsigned int, unsigned int, unsigned char**);

  template<int size, bool big_endian>

  void

  write_symbol(const std::string&, const Stringpool_template<char>*,

               section_size_type, unsigned int, unsigned char**);

  // The ELF machine code of the file to create.

  elfcpp::EM elf_machine_;

  // The size of the file to create, 32 or 64.

  int size_;

  // Whether to create a big endian file.

  bool big_endian_;

  // The name of the file to read.

  std::string filename_;

  // The ELF file data, allocated by new [].

  unsigned char* data_;

  // The ELF file size.

  section_size_type filesize_;

};

} // End namespace gold.

#endif // !defined(GOLD_BINARY_H)