| 1 | // freebsd.h -- FreeBSD support for gold -*- C++ -*- |
| 2 | |
| 3 | // Copyright (C) 2009-2018 Free Software Foundation, Inc. |
| 4 | // Written by Ian Lance Taylor <iant@google.com>. |
| 5 | |
| 6 | // This file is part of gold. |
| 7 | |
| 8 | // This program is free software; you can redistribute it and/or modify |
| 9 | // it under the terms of the GNU General Public License as published by |
| 10 | // the Free Software Foundation; either version 3 of the License, or |
| 11 | // (at your option) any later version. |
| 12 | |
| 13 | // This program is distributed in the hope that it will be useful, |
| 14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | // GNU General Public License for more details. |
| 17 | |
| 18 | // You should have received a copy of the GNU General Public License |
| 19 | // along with this program; if not, write to the Free Software |
| 20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 21 | // MA 02110-1301, USA. |
| 22 | |
| 23 | #include "target.h" |
| 24 | #include "target-select.h" |
| 25 | |
| 26 | #ifndef GOLD_FREEBSD_H |
| 27 | #define GOLD_FREEBSD_H |
| 28 | |
| 29 | namespace gold |
| 30 | { |
| 31 | |
| 32 | // FreeBSD 4.1 and later wants the EI_OSABI field in the ELF header to |
| 33 | // be set to ELFOSABI_FREEBSD. This is a target selector for targets |
| 34 | // which permit combining both FreeBSD and non-FreeBSD object files. |
| 35 | |
| 36 | class Target_selector_freebsd : public Target_selector |
| 37 | { |
| 38 | public: |
| 39 | Target_selector_freebsd(int machine, int size, bool is_big_endian, |
| 40 | const char* bfd_name, |
| 41 | const char* freebsd_bfd_name, |
| 42 | const char* emulation) |
| 43 | : Target_selector(machine, size, is_big_endian, NULL, emulation), |
| 44 | bfd_name_(bfd_name), freebsd_bfd_name_(freebsd_bfd_name) |
| 45 | { } |
| 46 | |
| 47 | protected: |
| 48 | // If we see a FreeBSD input file, mark the output file as using |
| 49 | // FreeBSD. |
| 50 | virtual Target* |
| 51 | do_recognize(Input_file*, off_t, int, int osabi, int) |
| 52 | { |
| 53 | Target* ret = this->instantiate_target(); |
| 54 | if (osabi == elfcpp::ELFOSABI_FREEBSD) |
| 55 | ret->set_osabi(static_cast<elfcpp::ELFOSABI>(osabi)); |
| 56 | return ret; |
| 57 | } |
| 58 | |
| 59 | // Recognize two names. |
| 60 | virtual Target* |
| 61 | do_recognize_by_bfd_name(const char* name) |
| 62 | { |
| 63 | if (strcmp(name, this->bfd_name_) == 0) |
| 64 | return this->instantiate_target(); |
| 65 | else if (strcmp(name, this->freebsd_bfd_name_) == 0) |
| 66 | { |
| 67 | Target* ret = this->instantiate_target(); |
| 68 | ret->set_osabi(elfcpp::ELFOSABI_FREEBSD); |
| 69 | return ret; |
| 70 | } |
| 71 | else |
| 72 | return NULL; |
| 73 | } |
| 74 | |
| 75 | // Print both names in --help output. |
| 76 | virtual void |
| 77 | do_supported_bfd_names(std::vector<const char*>* names) |
| 78 | { |
| 79 | names->push_back(this->bfd_name_); |
| 80 | names->push_back(this->freebsd_bfd_name_); |
| 81 | } |
| 82 | |
| 83 | // Return appropriate BFD name. |
| 84 | virtual const char* |
| 85 | do_target_bfd_name(const Target* target) |
| 86 | { |
| 87 | if (!this->is_our_target(target)) |
| 88 | return NULL; |
| 89 | return (target->osabi() == elfcpp::ELFOSABI_FREEBSD |
| 90 | ? this->freebsd_bfd_name_ |
| 91 | : this->bfd_name_); |
| 92 | } |
| 93 | |
| 94 | private: |
| 95 | // The BFD name for the non-Freebsd target. |
| 96 | const char* bfd_name_; |
| 97 | // The BFD name for the Freebsd target. |
| 98 | const char* freebsd_bfd_name_; |
| 99 | }; |
| 100 | |
| 101 | } // end namespace gold |
| 102 | |
| 103 | #endif // !defined(GOLD_FREEBSD_H) |