// freebsd.h -- FreeBSD support for gold    -*- C++ -*-

// Copyright (C) 2009-2024 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <[email protected]>.

// 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.

#include "target.h"
#include "target-select.h"

#ifndef GOLD_FREEBSD_H
#define GOLD_FREEBSD_H

namespace gold
{

// FreeBSD 4.1 and later wants the EI_OSABI field in the ELF header to
// be set to ELFOSABI_FREEBSD.  This is a target selector for targets
// which permit combining both FreeBSD and non-FreeBSD object files.

class Target_selector_freebsd : public Target_selector
{
public:
 Target_selector_freebsd(int machine, int size, bool is_big_endian,
                         const char* bfd_name,
                         const char* freebsd_bfd_name,
                         const char* emulation)
   : Target_selector(machine, size, is_big_endian, NULL, emulation),
     bfd_name_(bfd_name), freebsd_bfd_name_(freebsd_bfd_name)
 { }

protected:
 // If we see a FreeBSD input file, mark the output file as using
 // FreeBSD.
 virtual Target*
 do_recognize(Input_file*, off_t, int, int osabi, int)
 {
   Target* ret = this->instantiate_target();
   if (osabi == elfcpp::ELFOSABI_FREEBSD)
     ret->set_osabi(static_cast<elfcpp::ELFOSABI>(osabi));
   return ret;
 }

 // Recognize two names.
 virtual Target*
 do_recognize_by_bfd_name(const char* name)
 {
   if (strcmp(name, this->bfd_name_) == 0)
     return this->instantiate_target();
   else if (strcmp(name, this->freebsd_bfd_name_) == 0)
     {
       Target* ret = this->instantiate_target();
       ret->set_osabi(elfcpp::ELFOSABI_FREEBSD);
       return ret;
     }
   else
     return NULL;
 }

 // Print both names in --help output.
 virtual void
 do_supported_bfd_names(std::vector<const char*>* names)
 {
   names->push_back(this->bfd_name_);
   names->push_back(this->freebsd_bfd_name_);
 }

 // Return appropriate BFD name.
 virtual const char*
 do_target_bfd_name(const Target* target)
 {
   if (!this->is_our_target(target))
     return NULL;
   return (target->osabi() == elfcpp::ELFOSABI_FREEBSD
           ? this->freebsd_bfd_name_
           : this->bfd_name_);
 }

private:
 // The BFD name for the non-Freebsd target.
 const char* bfd_name_;
 // The BFD name for the Freebsd target.
 const char* freebsd_bfd_name_;
};

} // end namespace gold

#endif // !defined(GOLD_FREEBSD_H)

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