// elfcpp_internal.h -- internals for elfcpp -*- C++ -*-
+// Copyright (C) 2006-2019 Free Software Foundation, Inc.
+// Written by Ian Lance Taylor <iant@google.com>.
+
+// This file is part of elfcpp.
+
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public License
+// as published by the Free Software Foundation; either version 2, or
+// (at your option) any later version.
+
+// In addition to the permissions in the GNU Library General Public
+// License, the Free Software Foundation gives you unlimited
+// permission to link the compiled version of this file into
+// combinations with other programs, and to distribute those
+// combinations without any restriction coming from the use of this
+// file. (The Library Public License restrictions do apply in other
+// respects; for example, they cover modification of the file, and
+/// distribution when not linked into a combined executable.)
+
+// 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
+// Library General Public License for more details.
+
+// You should have received a copy of the GNU Library 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 is included by elfcpp.h, the external interface, but holds
// information which we want to keep private.
-#include "elfcpp_config.h"
-
-#include <byteswap.h>
-
#ifndef ELFCPP_INTERNAL_H
#define ELFCPP_INTERNAL_H
namespace internal
{
-#ifdef WORDS_BIGENDIAN
-const bool host_big_endian = true;
-#else
-const bool host_big_endian = false;
-#endif
-
-// Conversion routines between target and host.
-
-// Convert Elf_Half.
-
-template<bool same_endian>
-Elf_Half
-convert_half_host(Elf_Half v);
-
-template<>
-inline Elf_Half
-convert_half_host<true>(Elf_Half v)
-{
- return v;
-}
-
-template<>
-inline Elf_Half
-convert_half_host<false>(Elf_Half v)
-{
- return bswap_16(v);
-}
-
-template<bool big_endian>
-inline Elf_Half
-convert_half(Elf_Half v)
-{
- return convert_half_host<big_endian == host_big_endian>(v);
-}
-
-// Convert Elf_Word.
-
-template<bool same_endian>
-Elf_Word
-convert_word_host(Elf_Word v);
-
-template<>
-inline Elf_Word
-convert_word_host<true>(Elf_Word v)
-{
- return v;
-}
-
-template<>
-inline Elf_Word
-convert_word_host<false>(Elf_Word v)
-{
- return bswap_32(v);
-}
-
-template<bool big_endian>
-inline Elf_Word
-convert_word(Elf_Word v)
-{
- return convert_word_host<big_endian == host_big_endian>(v);
-}
-
-// Convert Elf_Xword.
-
-template<bool same_endian>
-Elf_Xword
-convert_xword_host(Elf_Xword v);
-
-template<>
-inline Elf_Xword
-convert_xword_host<true>(Elf_Xword v)
-{
- return v;
-}
-
-template<>
-inline Elf_Xword
-convert_xword_host<false>(Elf_Xword v)
-{
- return bswap_64(v);
-}
-
-template<bool big_endian>
-inline Elf_Xword
-convert_xword(Elf_Xword v)
-{
- return convert_xword_host<big_endian == host_big_endian>(v);
-}
-
-// Convert Elf_addr.
-
-template<int size, bool same_endian>
-typename Elf_types<size>::Elf_Addr
-convert_addr_size(typename Elf_types<size>::Elf_Addr);
-
-template<>
-inline Elf_types<32>::Elf_Addr
-convert_addr_size<32, true>(Elf_types<32>::Elf_Addr v)
-{
- return v;
-}
-
-template<>
-inline Elf_types<64>::Elf_Addr
-convert_addr_size<64, true>(Elf_types<64>::Elf_Addr v)
-{
- return v;
-}
-
-template<>
-inline Elf_types<32>::Elf_Addr
-convert_addr_size<32, false>(Elf_types<32>::Elf_Addr v)
-{
- return bswap_32(v);
-}
-
-template<>
-inline Elf_types<64>::Elf_Addr
-convert_addr_size<64, false>(Elf_types<64>::Elf_Addr v)
-{
- return bswap_64(v);
-}
-
-template<int size, bool big_endian>
-inline typename Elf_types<size>::Elf_Addr
-convert_addr(typename Elf_types<size>::Elf_Addr v)
-{
- return convert_addr_size<size, big_endian == host_big_endian>(v);
-}
-
-// Convert Elf_Off.
-
-template<int size, bool big_endian>
-inline typename Elf_types<size>::Elf_Off
-convert_off(typename Elf_types<size>::Elf_Off v)
-{
- return convert_addr_size<size, big_endian == host_big_endian>(v);
-}
-
-// Convert Elf_WXword.
-
-template<int size, bool big_endian>
-inline typename Elf_types<size>::Elf_WXword
-convert_wxword(typename Elf_types<size>::Elf_WXword v)
-{
- return convert_addr_size<size, big_endian == host_big_endian>(v);
-}
-
-// Convert ELF_Swxword.
-
-template<int size, bool big_endian>
-inline typename Elf_types<size>::Elf_Swxword
-convert_swxword(typename Elf_types<size>::Elf_Swxword v)
-{
- return convert_addr_size<size, big_endian == host_big_endian>(v);
-}
-
// The ELF file header.
template<int size>
Elf_Half e_shstrndx;
};
-// An Elf section header.
+// An ELF section header.
template<int size>
struct Shdr_data
typename Elf_types<size>::Elf_WXword sh_entsize;
};
+// An ELF compression header.
+
+template<int size>
+struct Chdr_data;
+
+template<>
+struct Chdr_data<32>
+{
+ Elf_Word ch_type;
+ Elf_Word ch_size;
+ Elf_Word ch_addralign;
+};
+
+template<>
+struct Chdr_data<64>
+{
+ Elf_Word ch_type;
+ Elf_Word ch_reserved;
+ Elf_Xword ch_size;
+ Elf_Xword ch_addralign;
+};
+
// An ELF segment header. We use template specialization for the
// 32-bit and 64-bit versions because the fields are in a different
// order.
Elf_Xword st_size;
};
-// Elf relocation table entries.
+// ELF relocation table entries.
template<int size>
struct Rel_data
typename Elf_types<size>::Elf_Swxword r_addend;
};
+// MIPS-64 has a non-standard layout for relocations.
+
+struct Mips64_rel_data
+{
+ Elf_types<64>::Elf_Addr r_offset;
+ Elf_Word r_sym;
+ unsigned char r_ssym;
+ unsigned char r_type3;
+ unsigned char r_type2;
+ unsigned char r_type;
+};
+
+struct Mips64_rela_data
+{
+ Elf_types<64>::Elf_Addr r_offset;
+ Elf_Word r_sym;
+ unsigned char r_ssym;
+ unsigned char r_type3;
+ unsigned char r_type2;
+ unsigned char r_type;
+ Elf_types<64>::Elf_Swxword r_addend;
+};
+
+// An entry in the ELF SHT_DYNAMIC section aka PT_DYNAMIC segment.
+
+template<int size>
+struct Dyn_data
+{
+ typename Elf_types<size>::Elf_Swxword d_tag;
+ typename Elf_types<size>::Elf_WXword d_val;
+};
+
+// An entry in a SHT_GNU_verdef section. This structure is the same
+// in 32-bit and 64-bit ELF files.
+
+struct Verdef_data
+{
+ // Version number of structure (VER_DEF_*).
+ Elf_Half vd_version;
+ // Bit flags (VER_FLG_*).
+ Elf_Half vd_flags;
+ // Version index.
+ Elf_Half vd_ndx;
+ // Number of auxiliary Verdaux entries.
+ Elf_Half vd_cnt;
+ // Hash of name.
+ Elf_Word vd_hash;
+ // Byte offset to first Verdaux entry.
+ Elf_Word vd_aux;
+ // Byte offset to next Verdef entry.
+ Elf_Word vd_next;
+};
+
+// An auxiliary entry in a SHT_GNU_verdef section. This structure is
+// the same in 32-bit and 64-bit ELF files.
+
+struct Verdaux_data
+{
+ // Offset in string table of version name.
+ Elf_Word vda_name;
+ // Byte offset to next Verdaux entry.
+ Elf_Word vda_next;
+};
+
+// An entry in a SHT_GNU_verneed section. This structure is the same
+// in 32-bit and 64-bit ELF files.
+
+struct Verneed_data
+{
+ // Version number of structure (VER_NEED_*).
+ Elf_Half vn_version;
+ // Number of auxiliary Vernaux entries.
+ Elf_Half vn_cnt;
+ // Offset in string table of library name.
+ Elf_Word vn_file;
+ // Byte offset to first Vernaux entry.
+ Elf_Word vn_aux;
+ // Byt eoffset to next Verneed entry.
+ Elf_Word vn_next;
+};
+
+// An auxiliary entry in a SHT_GNU_verneed section. This structure is
+// the same in 32-bit and 64-bit ELF files.
+
+struct Vernaux_data
+{
+ // Hash of dependency name.
+ Elf_Word vna_hash;
+ // Bit flags (VER_FLG_*).
+ Elf_Half vna_flags;
+ // Version index used in SHT_GNU_versym entries.
+ Elf_Half vna_other;
+ // Offset in string table of version name.
+ Elf_Word vna_name;
+ // Byte offset to next Vernaux entry.
+ Elf_Word vna_next;
+};
+
} // End namespace internal.
} // End namespace elfcpp.
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