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252b5132 | 1 | /* ELF support for BFD. |
ae990a1a | 2 | Copyright 1991, 1992, 1993, 1995, 1997, 1998, 1999, 2001 |
4f1d9bd8 | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | Written by Fred Fish @ Cygnus Support, from information published | |
6 | in "UNIX System V Release 4, Programmers Guide: ANSI C and | |
7 | Programming Support Tools". | |
8 | ||
9 | This file is part of BFD, the Binary File Descriptor library. | |
10 | ||
11 | This program is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with this program; if not, write to the Free Software | |
23 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
24 | ||
25 | ||
26 | /* This file is part of ELF support for BFD, and contains the portions | |
27 | that describe how ELF is represented externally by the BFD library. | |
28 | I.E. it describes the in-file representation of ELF. It requires | |
ae990a1a | 29 | the elf/common.h file which contains the portions that are common to |
252b5132 RH |
30 | both the internal and external representations. */ |
31 | ||
32 | /* The 64-bit stuff is kind of random. Perhaps someone will publish a | |
33 | spec someday. */ | |
34 | ||
35 | #ifndef _ELF_EXTERNAL_H | |
36 | #define _ELF_EXTERNAL_H | |
37 | ||
38 | /* ELF Header (32-bit implementations) */ | |
39 | ||
40 | typedef struct { | |
41 | unsigned char e_ident[16]; /* ELF "magic number" */ | |
42 | unsigned char e_type[2]; /* Identifies object file type */ | |
43 | unsigned char e_machine[2]; /* Specifies required architecture */ | |
44 | unsigned char e_version[4]; /* Identifies object file version */ | |
45 | unsigned char e_entry[4]; /* Entry point virtual address */ | |
46 | unsigned char e_phoff[4]; /* Program header table file offset */ | |
47 | unsigned char e_shoff[4]; /* Section header table file offset */ | |
48 | unsigned char e_flags[4]; /* Processor-specific flags */ | |
49 | unsigned char e_ehsize[2]; /* ELF header size in bytes */ | |
50 | unsigned char e_phentsize[2]; /* Program header table entry size */ | |
51 | unsigned char e_phnum[2]; /* Program header table entry count */ | |
52 | unsigned char e_shentsize[2]; /* Section header table entry size */ | |
53 | unsigned char e_shnum[2]; /* Section header table entry count */ | |
54 | unsigned char e_shstrndx[2]; /* Section header string table index */ | |
55 | } Elf32_External_Ehdr; | |
56 | ||
57 | typedef struct { | |
58 | unsigned char e_ident[16]; /* ELF "magic number" */ | |
59 | unsigned char e_type[2]; /* Identifies object file type */ | |
60 | unsigned char e_machine[2]; /* Specifies required architecture */ | |
61 | unsigned char e_version[4]; /* Identifies object file version */ | |
62 | unsigned char e_entry[8]; /* Entry point virtual address */ | |
63 | unsigned char e_phoff[8]; /* Program header table file offset */ | |
64 | unsigned char e_shoff[8]; /* Section header table file offset */ | |
65 | unsigned char e_flags[4]; /* Processor-specific flags */ | |
66 | unsigned char e_ehsize[2]; /* ELF header size in bytes */ | |
67 | unsigned char e_phentsize[2]; /* Program header table entry size */ | |
68 | unsigned char e_phnum[2]; /* Program header table entry count */ | |
69 | unsigned char e_shentsize[2]; /* Section header table entry size */ | |
70 | unsigned char e_shnum[2]; /* Section header table entry count */ | |
71 | unsigned char e_shstrndx[2]; /* Section header string table index */ | |
72 | } Elf64_External_Ehdr; | |
73 | ||
74 | /* Program header */ | |
75 | ||
76 | typedef struct { | |
77 | unsigned char p_type[4]; /* Identifies program segment type */ | |
78 | unsigned char p_offset[4]; /* Segment file offset */ | |
79 | unsigned char p_vaddr[4]; /* Segment virtual address */ | |
80 | unsigned char p_paddr[4]; /* Segment physical address */ | |
81 | unsigned char p_filesz[4]; /* Segment size in file */ | |
82 | unsigned char p_memsz[4]; /* Segment size in memory */ | |
83 | unsigned char p_flags[4]; /* Segment flags */ | |
84 | unsigned char p_align[4]; /* Segment alignment, file & memory */ | |
85 | } Elf32_External_Phdr; | |
86 | ||
87 | typedef struct { | |
88 | unsigned char p_type[4]; /* Identifies program segment type */ | |
89 | unsigned char p_flags[4]; /* Segment flags */ | |
90 | unsigned char p_offset[8]; /* Segment file offset */ | |
91 | unsigned char p_vaddr[8]; /* Segment virtual address */ | |
92 | unsigned char p_paddr[8]; /* Segment physical address */ | |
93 | unsigned char p_filesz[8]; /* Segment size in file */ | |
94 | unsigned char p_memsz[8]; /* Segment size in memory */ | |
95 | unsigned char p_align[8]; /* Segment alignment, file & memory */ | |
96 | } Elf64_External_Phdr; | |
97 | ||
98 | /* Section header */ | |
99 | ||
100 | typedef struct { | |
101 | unsigned char sh_name[4]; /* Section name, index in string tbl */ | |
102 | unsigned char sh_type[4]; /* Type of section */ | |
103 | unsigned char sh_flags[4]; /* Miscellaneous section attributes */ | |
104 | unsigned char sh_addr[4]; /* Section virtual addr at execution */ | |
105 | unsigned char sh_offset[4]; /* Section file offset */ | |
106 | unsigned char sh_size[4]; /* Size of section in bytes */ | |
107 | unsigned char sh_link[4]; /* Index of another section */ | |
108 | unsigned char sh_info[4]; /* Additional section information */ | |
109 | unsigned char sh_addralign[4]; /* Section alignment */ | |
110 | unsigned char sh_entsize[4]; /* Entry size if section holds table */ | |
111 | } Elf32_External_Shdr; | |
112 | ||
113 | typedef struct { | |
114 | unsigned char sh_name[4]; /* Section name, index in string tbl */ | |
115 | unsigned char sh_type[4]; /* Type of section */ | |
116 | unsigned char sh_flags[8]; /* Miscellaneous section attributes */ | |
117 | unsigned char sh_addr[8]; /* Section virtual addr at execution */ | |
118 | unsigned char sh_offset[8]; /* Section file offset */ | |
119 | unsigned char sh_size[8]; /* Size of section in bytes */ | |
120 | unsigned char sh_link[4]; /* Index of another section */ | |
121 | unsigned char sh_info[4]; /* Additional section information */ | |
122 | unsigned char sh_addralign[8]; /* Section alignment */ | |
123 | unsigned char sh_entsize[8]; /* Entry size if section holds table */ | |
124 | } Elf64_External_Shdr; | |
125 | ||
126 | /* Symbol table entry */ | |
127 | ||
128 | typedef struct { | |
129 | unsigned char st_name[4]; /* Symbol name, index in string tbl */ | |
130 | unsigned char st_value[4]; /* Value of the symbol */ | |
131 | unsigned char st_size[4]; /* Associated symbol size */ | |
132 | unsigned char st_info[1]; /* Type and binding attributes */ | |
133 | unsigned char st_other[1]; /* No defined meaning, 0 */ | |
134 | unsigned char st_shndx[2]; /* Associated section index */ | |
135 | } Elf32_External_Sym; | |
136 | ||
137 | typedef struct { | |
138 | unsigned char st_name[4]; /* Symbol name, index in string tbl */ | |
139 | unsigned char st_info[1]; /* Type and binding attributes */ | |
140 | unsigned char st_other[1]; /* No defined meaning, 0 */ | |
141 | unsigned char st_shndx[2]; /* Associated section index */ | |
142 | unsigned char st_value[8]; /* Value of the symbol */ | |
143 | unsigned char st_size[8]; /* Associated symbol size */ | |
144 | } Elf64_External_Sym; | |
145 | ||
9ad5cbcf AM |
146 | typedef struct { |
147 | unsigned char est_shndx[4]; /* Section index */ | |
148 | } Elf_External_Sym_Shndx; | |
149 | ||
252b5132 RH |
150 | /* Note segments */ |
151 | ||
152 | typedef struct { | |
153 | unsigned char namesz[4]; /* Size of entry's owner string */ | |
154 | unsigned char descsz[4]; /* Size of the note descriptor */ | |
155 | unsigned char type[4]; /* Interpretation of the descriptor */ | |
156 | char name[1]; /* Start of the name+desc data */ | |
157 | } Elf_External_Note; | |
158 | ||
159 | /* Relocation Entries */ | |
160 | typedef struct { | |
161 | unsigned char r_offset[4]; /* Location at which to apply the action */ | |
162 | unsigned char r_info[4]; /* index and type of relocation */ | |
163 | } Elf32_External_Rel; | |
164 | ||
165 | typedef struct { | |
166 | unsigned char r_offset[4]; /* Location at which to apply the action */ | |
167 | unsigned char r_info[4]; /* index and type of relocation */ | |
168 | unsigned char r_addend[4]; /* Constant addend used to compute value */ | |
169 | } Elf32_External_Rela; | |
170 | ||
171 | typedef struct { | |
172 | unsigned char r_offset[8]; /* Location at which to apply the action */ | |
173 | unsigned char r_info[8]; /* index and type of relocation */ | |
174 | } Elf64_External_Rel; | |
175 | ||
176 | typedef struct { | |
177 | unsigned char r_offset[8]; /* Location at which to apply the action */ | |
178 | unsigned char r_info[8]; /* index and type of relocation */ | |
179 | unsigned char r_addend[8]; /* Constant addend used to compute value */ | |
180 | } Elf64_External_Rela; | |
181 | ||
182 | /* dynamic section structure */ | |
183 | ||
184 | typedef struct { | |
185 | unsigned char d_tag[4]; /* entry tag value */ | |
186 | union { | |
187 | unsigned char d_val[4]; | |
188 | unsigned char d_ptr[4]; | |
189 | } d_un; | |
190 | } Elf32_External_Dyn; | |
191 | ||
192 | typedef struct { | |
193 | unsigned char d_tag[8]; /* entry tag value */ | |
194 | union { | |
195 | unsigned char d_val[8]; | |
196 | unsigned char d_ptr[8]; | |
197 | } d_un; | |
198 | } Elf64_External_Dyn; | |
199 | ||
200 | /* The version structures are currently size independent. They are | |
201 | named without a 32 or 64. If that ever changes, these structures | |
202 | will need to be renamed. */ | |
203 | ||
204 | /* This structure appears in a SHT_GNU_verdef section. */ | |
205 | ||
206 | typedef struct { | |
207 | unsigned char vd_version[2]; | |
208 | unsigned char vd_flags[2]; | |
209 | unsigned char vd_ndx[2]; | |
210 | unsigned char vd_cnt[2]; | |
211 | unsigned char vd_hash[4]; | |
212 | unsigned char vd_aux[4]; | |
213 | unsigned char vd_next[4]; | |
214 | } Elf_External_Verdef; | |
215 | ||
216 | /* This structure appears in a SHT_GNU_verdef section. */ | |
217 | ||
218 | typedef struct { | |
219 | unsigned char vda_name[4]; | |
220 | unsigned char vda_next[4]; | |
221 | } Elf_External_Verdaux; | |
222 | ||
223 | /* This structure appears in a SHT_GNU_verneed section. */ | |
224 | ||
225 | typedef struct { | |
226 | unsigned char vn_version[2]; | |
227 | unsigned char vn_cnt[2]; | |
228 | unsigned char vn_file[4]; | |
229 | unsigned char vn_aux[4]; | |
230 | unsigned char vn_next[4]; | |
231 | } Elf_External_Verneed; | |
232 | ||
233 | /* This structure appears in a SHT_GNU_verneed section. */ | |
234 | ||
235 | typedef struct { | |
236 | unsigned char vna_hash[4]; | |
237 | unsigned char vna_flags[2]; | |
238 | unsigned char vna_other[2]; | |
239 | unsigned char vna_name[4]; | |
240 | unsigned char vna_next[4]; | |
241 | } Elf_External_Vernaux; | |
242 | ||
243 | /* This structure appears in a SHT_GNU_versym section. This is not a | |
244 | standard ELF structure; ELF just uses Elf32_Half. */ | |
245 | ||
246 | typedef struct { | |
247 | unsigned char vs_vers[2]; | |
248 | } | |
249 | #ifdef __GNUC__ | |
250 | __attribute__ ((packed)) | |
251 | #endif | |
252 | Elf_External_Versym; | |
253 | ||
254 | /* Structure for syminfo section. */ | |
255 | typedef struct | |
256 | { | |
257 | unsigned char si_boundto[2]; | |
258 | unsigned char si_flags[2]; | |
259 | } Elf_External_Syminfo; | |
260 | ||
eecca0f7 RM |
261 | |
262 | /* This structure appears on the stack and in NT_AUXV core file notes. */ | |
263 | typedef struct | |
264 | { | |
265 | unsigned char a_type[4]; | |
266 | unsigned char a_val[4]; | |
267 | } Elf32_External_Auxv; | |
268 | ||
269 | typedef struct | |
270 | { | |
271 | unsigned char a_type[8]; | |
272 | unsigned char a_val[8]; | |
273 | } Elf64_External_Auxv; | |
274 | ||
275 | ||
252b5132 | 276 | #endif /* _ELF_EXTERNAL_H */ |