1 /* This file defines generic ELF types, structures, and macros.
2 Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005, 2007 Red Hat, Inc.
3 This file is part of Red Hat elfutils.
5 Red Hat elfutils is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by the
7 Free Software Foundation; version 2 of the License.
9 Red Hat elfutils is distributed in the hope that it will be useful, but
10 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 General Public License for more details.
14 You should have received a copy of the GNU General Public License along
15 with Red Hat elfutils; if not, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
18 In addition, as a special exception, Red Hat, Inc. gives You the
19 additional right to link the code of Red Hat elfutils with code licensed
20 under any Open Source Initiative certified open source license
21 (http://www.opensource.org/licenses/index.php) which requires the
22 distribution of source code with any binary distribution and to
23 distribute linked combinations of the two. Non-GPL Code permitted under
24 this exception must only link to the code of Red Hat elfutils through
25 those well defined interfaces identified in the file named EXCEPTION
26 found in the source code files (the "Approved Interfaces"). The files
27 of Non-GPL Code may instantiate templates or use macros or inline
28 functions from the Approved Interfaces without causing the resulting
29 work to be covered by the GNU General Public License. Only Red Hat,
30 Inc. may make changes or additions to the list of Approved Interfaces.
31 Red Hat's grant of this exception is conditioned upon your not adding
32 any new exceptions. If you wish to add a new Approved Interface or
33 exception, please contact Red Hat. You must obey the GNU General Public
34 License in all respects for all of the Red Hat elfutils code and other
35 code used in conjunction with Red Hat elfutils except the Non-GPL Code
36 covered by this exception. If you modify this file, you may extend this
37 exception to your version of the file, but you are not obligated to do
38 so. If you do not wish to provide this exception without modification,
39 you must delete this exception statement from your version and license
40 this file solely under the GPL without exception.
42 Red Hat elfutils is an included package of the Open Invention Network.
43 An included package of the Open Invention Network is a package for which
44 Open Invention Network licensees cross-license their patents. No patent
45 license is granted, either expressly or impliedly, by designation as an
46 included package. Should you wish to participate in the Open Invention
47 Network licensing program, please visit www.openinventionnetwork.com
48 <http://www.openinventionnetwork.com>. */
60 /* Class independent type definitions. Correctly speaking this is not
61 true. We assume that 64-bit binaries are the largest class and
62 therefore all other classes can be represented without loss. */
64 /* Type for a 16-bit quantity. */
65 typedef Elf64_Half GElf_Half;
67 /* Types for signed and unsigned 32-bit quantities. */
68 typedef Elf64_Word GElf_Word;
69 typedef Elf64_Sword GElf_Sword;
71 /* Types for signed and unsigned 64-bit quantities. */
72 typedef Elf64_Xword GElf_Xword;
73 typedef Elf64_Sxword GElf_Sxword;
75 /* Type of addresses. */
76 typedef Elf64_Addr GElf_Addr;
78 /* Type of file offsets. */
79 typedef Elf64_Off GElf_Off;
82 /* The ELF file header. This appears at the start of every ELF file. */
83 typedef Elf64_Ehdr GElf_Ehdr;
86 typedef Elf64_Shdr GElf_Shdr;
89 /* XXX This should probably be a larger type in preparation of times when
90 regular section indices can be larger. */
91 typedef Elf64_Section GElf_Section;
93 /* Symbol table entry. */
94 typedef Elf64_Sym GElf_Sym;
96 /* The syminfo section if available contains additional information about
97 every dynamic symbol. */
98 typedef Elf64_Syminfo GElf_Syminfo;
100 /* Relocation table entry without addend (in section of type SHT_REL). */
101 typedef Elf64_Rel GElf_Rel;
103 /* Relocation table entry with addend (in section of type SHT_RELA). */
104 typedef Elf64_Rela GElf_Rela;
106 /* Program segment header. */
107 typedef Elf64_Phdr GElf_Phdr;
109 /* Dynamic section entry. */
110 typedef Elf64_Dyn GElf_Dyn;
113 /* Version definition sections. */
114 typedef Elf64_Verdef GElf_Verdef;
116 /* Auxialiary version information. */
117 typedef Elf64_Verdaux GElf_Verdaux;
119 /* Version dependency section. */
120 typedef Elf64_Verneed GElf_Verneed;
122 /* Auxiliary needed version information. */
123 typedef Elf64_Vernaux GElf_Vernaux;
126 /* Type for version symbol information. */
127 typedef Elf64_Versym GElf_Versym;
130 /* Auxiliary vector. */
131 typedef Elf64_auxv_t GElf_auxv_t;
134 /* Note section contents. */
135 typedef Elf64_Nhdr GElf_Nhdr;
138 /* Move structure. */
139 typedef Elf64_Move GElf_Move;
142 /* Library list structure. */
143 typedef Elf64_Lib GElf_Lib;
146 /* How to extract and insert information held in the st_info field. */
148 #define GELF_ST_BIND(val) ELF64_ST_BIND (val)
149 #define GELF_ST_TYPE(val) ELF64_ST_TYPE (val)
150 #define GELF_ST_INFO(bind, type) ELF64_ST_INFO (bind, type)
152 /* How to extract information held in the st_other field. */
154 #define GELF_ST_VISIBILITY(val) ELF64_ST_VISIBILITY (val)
157 /* How to extract and insert information held in the r_info field. */
159 #define GELF_R_SYM(info) ELF64_R_SYM (info)
160 #define GELF_R_TYPE(info) ELF64_R_TYPE (info)
161 #define GELF_R_INFO(sym, type) ELF64_R_INFO (sym, type)
164 /* How to extract and insert information held in the m_info field. */
165 #define GELF_M_SYM(info) ELF64_M_SYM (info)
166 #define GELF_M_SIZE(info) ELF64_M_SIZE (info)
167 #define GELF_M_INFO(sym, size) ELF64_M_INFO (sym, size)
170 /* Get class of the file associated with ELF. */
171 extern int gelf_getclass (Elf *__elf);
174 /* Return size of array of COUNT elemeents of the type denoted by TYPE
175 in the external representation. The binary class is taken from ELF.
176 The result is based on version VERSION of the ELF standard. */
177 extern size_t gelf_fsize (Elf *__elf, Elf_Type __type, size_t __count,
178 unsigned int __version);
180 /* Retrieve object file header. */
181 extern GElf_Ehdr *gelf_getehdr (Elf *__elf, GElf_Ehdr *__dest);
183 /* Update the ELF header. */
184 extern int gelf_update_ehdr (Elf *__elf, GElf_Ehdr *__src);
186 /* Create new ELF header if none exists. */
187 extern unsigned long int gelf_newehdr (Elf *__elf, int __class);
189 /* Get section at OFFSET. */
190 extern Elf_Scn *gelf_offscn (Elf *__elf, GElf_Off __offset);
192 /* Retrieve section header. */
193 extern GElf_Shdr *gelf_getshdr (Elf_Scn *__scn, GElf_Shdr *__dst);
195 /* Update section header. */
196 extern int gelf_update_shdr (Elf_Scn *__scn, GElf_Shdr *__src);
198 /* Retrieve program header table entry. */
199 extern GElf_Phdr *gelf_getphdr (Elf *__elf, int __ndx, GElf_Phdr *__dst);
201 /* Update the program header. */
202 extern int gelf_update_phdr (Elf *__elf, int __ndx, GElf_Phdr *__src);
204 /* Create new program header with PHNUM entries. */
205 extern unsigned long int gelf_newphdr (Elf *__elf, size_t __phnum);
208 /* Convert data structure from the representation in the file represented
209 by ELF to their memory representation. */
210 extern Elf_Data *gelf_xlatetom (Elf *__elf, Elf_Data *__dest,
211 const Elf_Data *__src, unsigned int __encode);
213 /* Convert data structure from to the representation in memory
214 represented by ELF file representation. */
215 extern Elf_Data *gelf_xlatetof (Elf *__elf, Elf_Data *__dest,
216 const Elf_Data *__src, unsigned int __encode);
219 /* Retrieve REL relocation info at the given index. */
220 extern GElf_Rel *gelf_getrel (Elf_Data *__data, int __ndx, GElf_Rel *__dst);
222 /* Retrieve RELA relocation info at the given index. */
223 extern GElf_Rela *gelf_getrela (Elf_Data *__data, int __ndx, GElf_Rela *__dst);
225 /* Update REL relocation information at given index. */
226 extern int gelf_update_rel (Elf_Data *__dst, int __ndx, GElf_Rel *__src);
228 /* Update RELA relocation information at given index. */
229 extern int gelf_update_rela (Elf_Data *__dst, int __ndx, GElf_Rela *__src);
232 /* Retrieve symbol information from the symbol table at the given index. */
233 extern GElf_Sym *gelf_getsym (Elf_Data *__data, int __ndx, GElf_Sym *__dst);
235 /* Update symbol information in the symbol table at the given index. */
236 extern int gelf_update_sym (Elf_Data *__data, int __ndx, GElf_Sym *__src);
239 /* Retrieve symbol information and separate section index from the
240 symbol table at the given index. */
241 extern GElf_Sym *gelf_getsymshndx (Elf_Data *__symdata, Elf_Data *__shndxdata,
242 int __ndx, GElf_Sym *__sym,
243 Elf32_Word *__xshndx);
245 /* Update symbol information and separate section index in the symbol
246 table at the given index. */
247 extern int gelf_update_symshndx (Elf_Data *__symdata, Elf_Data *__shndxdata,
248 int __ndx, GElf_Sym *__sym,
249 Elf32_Word __xshndx);
252 /* Retrieve additional symbol information from the symbol table at the
254 extern GElf_Syminfo *gelf_getsyminfo (Elf_Data *__data, int __ndx,
255 GElf_Syminfo *__dst);
257 /* Update additional symbol information in the symbol table at the
259 extern int gelf_update_syminfo (Elf_Data *__data, int __ndx,
260 GElf_Syminfo *__src);
263 /* Get information from dynamic table at the given index. */
264 extern GElf_Dyn *gelf_getdyn (Elf_Data *__data, int __ndx, GElf_Dyn *__dst);
266 /* Update information in dynamic table at the given index. */
267 extern int gelf_update_dyn (Elf_Data *__dst, int __ndx, GElf_Dyn *__src);
270 /* Get move structure at the given index. */
271 extern GElf_Move *gelf_getmove (Elf_Data *__data, int __ndx, GElf_Move *__dst);
273 /* Update move structure at the given index. */
274 extern int gelf_update_move (Elf_Data *__data, int __ndx,
278 /* Get library from table at the given index. */
279 extern GElf_Lib *gelf_getlib (Elf_Data *__data, int __ndx, GElf_Lib *__dst);
281 /* Update library in table at the given index. */
282 extern int gelf_update_lib (Elf_Data *__data, int __ndx, GElf_Lib *__src);
286 /* Retrieve symbol version information at given index. */
287 extern GElf_Versym *gelf_getversym (Elf_Data *__data, int __ndx,
290 /* Update symbol version information. */
291 extern int gelf_update_versym (Elf_Data *__data, int __ndx,
295 /* Retrieve required symbol version information at given offset. */
296 extern GElf_Verneed *gelf_getverneed (Elf_Data *__data, int __offset,
297 GElf_Verneed *__dst);
299 /* Update required symbol version information. */
300 extern int gelf_update_verneed (Elf_Data *__data, int __offset,
301 GElf_Verneed *__src);
303 /* Retrieve additional required symbol version information at given offset. */
304 extern GElf_Vernaux *gelf_getvernaux (Elf_Data *__data, int __offset,
305 GElf_Vernaux *__dst);
307 /* Update additional required symbol version information. */
308 extern int gelf_update_vernaux (Elf_Data *__data, int __offset,
309 GElf_Vernaux *__src);
312 /* Retrieve symbol version definition information at given offset. */
313 extern GElf_Verdef *gelf_getverdef (Elf_Data *__data, int __offset,
316 /* Update symbol version definition information. */
317 extern int gelf_update_verdef (Elf_Data *__data, int __offset,
320 /* Retrieve additional symbol version definition information at given
322 extern GElf_Verdaux *gelf_getverdaux (Elf_Data *__data, int __offset,
323 GElf_Verdaux *__dst);
325 /* Update additional symbol version definition information. */
326 extern int gelf_update_verdaux (Elf_Data *__data, int __offset,
327 GElf_Verdaux *__src);
330 /* Get auxv entry at the given index. */
331 extern GElf_auxv_t *gelf_getauxv (Elf_Data *__data, int __ndx,
334 /* Update auxv entry at the given index. */
335 extern int gelf_update_auxv (Elf_Data *__data, int __ndx, GElf_auxv_t *__src);
338 /* Get note header at the given offset into the data, and the offsets of
339 the note's name and descriptor data. Returns the offset of the next
340 note header, or 0 for an invalid offset or corrupt note header. */
341 extern size_t gelf_getnote (Elf_Data *__data, size_t __offset,
343 size_t *__name_offset, size_t *__desc_offset);
346 /* Compute simple checksum from permanent parts of the ELF file. */
347 extern long int gelf_checksum (Elf *__elf);