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[binutils.git] / elfcpp / elfcpp_internal.h
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1 // elfcpp_internal.h -- internals for elfcpp -*- C++ -*-
3 // Copyright 2006, 2007, Free Software Foundation, Inc.
4 // Written by Ian Lance Taylor <iant@google.com>.
6 // This file is part of elfcpp.
8 // This program is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU Library General Public License
10 // as published by the Free Software Foundation; either version 2, or
11 // (at your option) any later version.
13 // In addition to the permissions in the GNU Library General Public
14 // License, the Free Software Foundation gives you unlimited
15 // permission to link the compiled version of this file into
16 // combinations with other programs, and to distribute those
17 // combinations without any restriction coming from the use of this
18 // file. (The Library Public License restrictions do apply in other
19 // respects; for example, they cover modification of the file, and
20 /// distribution when not linked into a combined executable.)
22 // This program is distributed in the hope that it will be useful, but
23 // WITHOUT ANY WARRANTY; without even the implied warranty of
24 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
25 // Library General Public License for more details.
27 // You should have received a copy of the GNU Library General Public
28 // License along with this program; if not, write to the Free Software
29 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
30 // 02110-1301, USA.
32 // This is included by elfcpp.h, the external interface, but holds
33 // information which we want to keep private.
35 #ifndef ELFCPP_INTERNAL_H
36 #define ELFCPP_INTERNAL_H
38 namespace elfcpp
41 namespace internal
44 // The ELF file header.
46 template<int size>
47 struct Ehdr_data
49 unsigned char e_ident[EI_NIDENT];
50 Elf_Half e_type;
51 Elf_Half e_machine;
52 Elf_Word e_version;
53 typename Elf_types<size>::Elf_Addr e_entry;
54 typename Elf_types<size>::Elf_Off e_phoff;
55 typename Elf_types<size>::Elf_Off e_shoff;
56 Elf_Word e_flags;
57 Elf_Half e_ehsize;
58 Elf_Half e_phentsize;
59 Elf_Half e_phnum;
60 Elf_Half e_shentsize;
61 Elf_Half e_shnum;
62 Elf_Half e_shstrndx;
65 // An ELF section header.
67 template<int size>
68 struct Shdr_data
70 Elf_Word sh_name;
71 Elf_Word sh_type;
72 typename Elf_types<size>::Elf_WXword sh_flags;
73 typename Elf_types<size>::Elf_Addr sh_addr;
74 typename Elf_types<size>::Elf_Off sh_offset;
75 typename Elf_types<size>::Elf_WXword sh_size;
76 Elf_Word sh_link;
77 Elf_Word sh_info;
78 typename Elf_types<size>::Elf_WXword sh_addralign;
79 typename Elf_types<size>::Elf_WXword sh_entsize;
82 // An ELF segment header. We use template specialization for the
83 // 32-bit and 64-bit versions because the fields are in a different
84 // order.
86 template<int size>
87 struct Phdr_data;
89 template<>
90 struct Phdr_data<32>
92 Elf_Word p_type;
93 Elf_types<32>::Elf_Off p_offset;
94 Elf_types<32>::Elf_Addr p_vaddr;
95 Elf_types<32>::Elf_Addr p_paddr;
96 Elf_Word p_filesz;
97 Elf_Word p_memsz;
98 Elf_Word p_flags;
99 Elf_Word p_align;
102 template<>
103 struct Phdr_data<64>
105 Elf_Word p_type;
106 Elf_Word p_flags;
107 Elf_types<64>::Elf_Off p_offset;
108 Elf_types<64>::Elf_Addr p_vaddr;
109 Elf_types<64>::Elf_Addr p_paddr;
110 Elf_Xword p_filesz;
111 Elf_Xword p_memsz;
112 Elf_Xword p_align;
115 // An ELF symbol table entry. We use template specialization for the
116 // 32-bit and 64-bit versions because the fields are in a different
117 // order.
119 template<int size>
120 struct Sym_data;
122 template<>
123 struct Sym_data<32>
125 Elf_Word st_name;
126 Elf_types<32>::Elf_Addr st_value;
127 Elf_Word st_size;
128 unsigned char st_info;
129 unsigned char st_other;
130 Elf_Half st_shndx;
133 template<>
134 struct Sym_data<64>
136 Elf_Word st_name;
137 unsigned char st_info;
138 unsigned char st_other;
139 Elf_Half st_shndx;
140 Elf_types<64>::Elf_Addr st_value;
141 Elf_Xword st_size;
144 // ELF relocation table entries.
146 template<int size>
147 struct Rel_data
149 typename Elf_types<size>::Elf_Addr r_offset;
150 typename Elf_types<size>::Elf_WXword r_info;
153 template<int size>
154 struct Rela_data
156 typename Elf_types<size>::Elf_Addr r_offset;
157 typename Elf_types<size>::Elf_WXword r_info;
158 typename Elf_types<size>::Elf_Swxword r_addend;
161 // An entry in the ELF SHT_DYNAMIC section aka PT_DYNAMIC segment.
163 template<int size>
164 struct Dyn_data
166 typename Elf_types<size>::Elf_Swxword d_tag;
167 typename Elf_types<size>::Elf_WXword d_val;
170 // An entry in a SHT_GNU_verdef section. This structure is the same
171 // in 32-bit and 64-bit ELF files.
173 struct Verdef_data
175 // Version number of structure (VER_DEF_*).
176 Elf_Half vd_version;
177 // Bit flags (VER_FLG_*).
178 Elf_Half vd_flags;
179 // Version index.
180 Elf_Half vd_ndx;
181 // Number of auxiliary Verdaux entries.
182 Elf_Half vd_cnt;
183 // Hash of name.
184 Elf_Word vd_hash;
185 // Byte offset to first Verdaux entry.
186 Elf_Word vd_aux;
187 // Byte offset to next Verdef entry.
188 Elf_Word vd_next;
191 // An auxiliary entry in a SHT_GNU_verdef section. This structure is
192 // the same in 32-bit and 64-bit ELF files.
194 struct Verdaux_data
196 // Offset in string table of version name.
197 Elf_Word vda_name;
198 // Byte offset to next Verdaux entry.
199 Elf_Word vda_next;
202 // An entry in a SHT_GNU_verneed section. This structure is the same
203 // in 32-bit and 64-bit ELF files.
205 struct Verneed_data
207 // Version number of structure (VER_NEED_*).
208 Elf_Half vn_version;
209 // Number of auxiliary Vernaux entries.
210 Elf_Half vn_cnt;
211 // Offset in string table of library name.
212 Elf_Word vn_file;
213 // Byte offset to first Vernaux entry.
214 Elf_Word vn_aux;
215 // Byt eoffset to next Verneed entry.
216 Elf_Word vn_next;
219 // An auxiliary entry in a SHT_GNU_verneed section. This structure is
220 // the same in 32-bit and 64-bit ELF files.
222 struct Vernaux_data
224 // Hash of dependency name.
225 Elf_Word vna_hash;
226 // Bit flags (VER_FLG_*).
227 Elf_Half vna_flags;
228 // Version index used in SHT_GNU_versym entries.
229 Elf_Half vna_other;
230 // Offset in string table of version name.
231 Elf_Word vna_name;
232 // Byte offset to next Vernaux entry.
233 Elf_Word vna_next;
236 } // End namespace internal.
238 } // End namespace elfcpp.
240 #endif // !defined(ELFCPP_INTERNAL_H)