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+// freebsd.h -- FreeBSD support for gold -*- C++ -*-
+
+// Copyright 2009, 2011, 2012 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)