Merge commit 'upstream/2.20'

[msp430-binutils.git] / gold / reloc-types.h

diff --git a/gold/reloc-types.h b/gold/reloc-types.h
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+// reloc-types.h -- ELF relocation templates for gold  -*- C++ -*-
+
+// Copyright 2006, 2007, 2008 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.
+
+// This header files defines a few convenient templated types for use
+// when handling ELF relocations.
+
+#ifndef GOLD_RELOC_TYPES_H
+#define GOLD_RELOC_TYPES_H
+
+#include "elfcpp.h"
+
+namespace gold
+{
+
+// Pick the ELF relocation accessor class and the size based on
+// SH_TYPE, which is either elfcpp::SHT_REL or elfcpp::SHT_RELA.
+
+template<int sh_type, int size, bool big_endian>
+struct Reloc_types;
+
+template<int size, bool big_endian>
+struct Reloc_types<elfcpp::SHT_REL, size, big_endian>
+{
+  typedef typename elfcpp::Rel<size, big_endian> Reloc;
+  typedef typename elfcpp::Rel_write<size, big_endian> Reloc_write;
+  static const int reloc_size = elfcpp::Elf_sizes<size>::rel_size;
+
+  static inline typename elfcpp::Elf_types<size>::Elf_Swxword
+  get_reloc_addend(const Reloc*)
+  { gold_unreachable(); }
+
+  static inline typename elfcpp::Elf_types<size>::Elf_Swxword
+  get_reloc_addend_noerror(const Reloc*)
+  { return 0; }
+
+  static inline void
+  set_reloc_addend(Reloc_write*,
+                  typename elfcpp::Elf_types<size>::Elf_Swxword)
+  { gold_unreachable(); }
+
+  static inline void
+  copy_reloc_addend(Reloc_write*, const Reloc*)
+  { gold_unreachable(); }
+};
+
+template<int size, bool big_endian>
+struct Reloc_types<elfcpp::SHT_RELA, size, big_endian>
+{
+  typedef typename elfcpp::Rela<size, big_endian> Reloc;
+  typedef typename elfcpp::Rela_write<size, big_endian> Reloc_write;
+  static const int reloc_size = elfcpp::Elf_sizes<size>::rela_size;
+
+  static inline typename elfcpp::Elf_types<size>::Elf_Swxword
+  get_reloc_addend(const Reloc* p)
+  { return p->get_r_addend(); }
+
+  static inline typename elfcpp::Elf_types<size>::Elf_Swxword
+  get_reloc_addend_noerror(const Reloc* p)
+  { return p->get_r_addend(); }
+
+  static inline void
+  set_reloc_addend(Reloc_write* p,
+                  typename elfcpp::Elf_types<size>::Elf_Swxword val)
+  { p->put_r_addend(val); }
+
+  static inline void
+  copy_reloc_addend(Reloc_write* to, const Reloc* from)
+  { to->put_r_addend(from->get_r_addend()); }
+};
+
+}; // End namespace gold.
+
+#endif // !defined(GOLD_RELOC_TYPE_SH)