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// freebsd.h -- FreeBSD support for gold -*- C++ -*-
// Copyright (C) 2009-2017 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.
#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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