1 // reloc-types.h -- ELF relocation templates for gold -*- C++ -*- 2 3 // Copyright (C) 2006-2016 Free Software Foundation, Inc. 4 // Written by Ian Lance Taylor <iant (at) 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 // This header files defines a few convenient templated types for use 24 // when handling ELF relocations. 25 26 #ifndef GOLD_RELOC_TYPES_H 27 #define GOLD_RELOC_TYPES_H 28 29 #include "elfcpp.h" 30 31 namespace gold 32 { 33 34 // Pick the ELF relocation accessor class and the size based on 35 // SH_TYPE, which is either elfcpp::SHT_REL or elfcpp::SHT_RELA. 36 37 template<int sh_type, int size, bool big_endian> 38 struct Reloc_types; 39 40 template<int size, bool big_endian> 41 struct Reloc_types<elfcpp::SHT_REL, size, big_endian> 42 { 43 typedef typename elfcpp::Rel<size, big_endian> Reloc; 44 typedef typename elfcpp::Rel_write<size, big_endian> Reloc_write; 45 static const int reloc_size = elfcpp::Elf_sizes<size>::rel_size; 46 47 static inline typename elfcpp::Elf_types<size>::Elf_Swxword 48 get_reloc_addend(const Reloc*) 49 { gold_unreachable(); } 50 51 static inline typename elfcpp::Elf_types<size>::Elf_Swxword 52 get_reloc_addend_noerror(const Reloc*) 53 { return 0; } 54 55 static inline void 56 set_reloc_addend(Reloc_write*, 57 typename elfcpp::Elf_types<size>::Elf_Swxword) 58 { gold_unreachable(); } 59 }; 60 61 template<int size, bool big_endian> 62 struct Reloc_types<elfcpp::SHT_RELA, size, big_endian> 63 { 64 typedef typename elfcpp::Rela<size, big_endian> Reloc; 65 typedef typename elfcpp::Rela_write<size, big_endian> Reloc_write; 66 static const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; 67 68 static inline typename elfcpp::Elf_types<size>::Elf_Swxword 69 get_reloc_addend(const Reloc* p) 70 { return p->get_r_addend(); } 71 72 static inline typename elfcpp::Elf_types<size>::Elf_Swxword 73 get_reloc_addend_noerror(const Reloc* p) 74 { return p->get_r_addend(); } 75 76 static inline void 77 set_reloc_addend(Reloc_write* p, 78 typename elfcpp::Elf_types<size>::Elf_Swxword val) 79 { p->put_r_addend(val); } 80 }; 81 82 template<int size, bool big_endian> 83 struct Reloc_types<elfcpp::SHT_RELR, size, big_endian> 84 { 85 typedef typename elfcpp::Relr<size, big_endian> Reloc; 86 typedef typename elfcpp::Relr_write<size, big_endian> Reloc_write; 87 static const int reloc_size = elfcpp::Elf_sizes<size>::relr_size; 88 89 static inline typename elfcpp::Elf_types<size>::Elf_Swxword 90 get_reloc_addend(const Reloc*) 91 { gold_unreachable(); } 92 93 static inline typename elfcpp::Elf_types<size>::Elf_Swxword 94 get_reloc_addend_noerror(const Reloc*) 95 { return 0; } 96 97 static inline void 98 set_reloc_addend(Reloc_write*, 99 typename elfcpp::Elf_types<size>::Elf_Swxword) 100 { gold_unreachable(); } 101 }; 102 }; // End namespace gold. 103 104 #endif // !defined(GOLD_RELOC_TYPE_SH) 105
