Merge branch 'vendor/GCC50'
[dragonfly.git] / contrib / binutils-2.24 / gold / reloc-types.h
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1// reloc-types.h -- ELF relocation templates for gold -*- C++ -*-
2
3// Copyright 2006, 2007, 2008 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// 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
31namespace 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
37template<int sh_type, int size, bool big_endian>
38struct Reloc_types;
39
40template<int size, bool big_endian>
41struct 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 static inline void
61 copy_reloc_addend(Reloc_write*, const Reloc*)
62 { gold_unreachable(); }
63};
64
65template<int size, bool big_endian>
66struct Reloc_types<elfcpp::SHT_RELA, size, big_endian>
67{
68 typedef typename elfcpp::Rela<size, big_endian> Reloc;
69 typedef typename elfcpp::Rela_write<size, big_endian> Reloc_write;
70 static const int reloc_size = elfcpp::Elf_sizes<size>::rela_size;
71
72 static inline typename elfcpp::Elf_types<size>::Elf_Swxword
73 get_reloc_addend(const Reloc* p)
74 { return p->get_r_addend(); }
75
76 static inline typename elfcpp::Elf_types<size>::Elf_Swxword
77 get_reloc_addend_noerror(const Reloc* p)
78 { return p->get_r_addend(); }
79
80 static inline void
81 set_reloc_addend(Reloc_write* p,
82 typename elfcpp::Elf_types<size>::Elf_Swxword val)
83 { p->put_r_addend(val); }
84
85 static inline void
86 copy_reloc_addend(Reloc_write* to, const Reloc* from)
87 { to->put_r_addend(from->get_r_addend()); }
88};
89
90}; // End namespace gold.
91
92#endif // !defined(GOLD_RELOC_TYPE_SH)