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c5053360 | 1 | /* ELF support for BFD. |
56c4200b | 2 | Copyright (C) 1991, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc. |
c5053360 FF |
3 | |
4 | Written by Fred Fish @ Cygnus Support, from information published | |
5 | in "UNIX System V Release 4, Programmers Guide: ANSI C and | |
6 | Programming Support Tools". | |
7 | ||
8 | This file is part of BFD, the Binary File Descriptor library. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software | |
e46bbae2 | 22 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
c5053360 FF |
23 | |
24 | ||
25 | /* This file is part of ELF support for BFD, and contains the portions | |
26 | that are common to both the internal and external representations. | |
27 | For example, ELFMAG0 is the byte 0x7F in both the internal (in-memory) | |
28 | and external (in-file) representations. */ | |
e46bbae2 DE |
29 | |
30 | #ifndef _ELF_COMMON_H | |
31 | #define _ELF_COMMON_H | |
c5053360 FF |
32 | |
33 | /* Fields in e_ident[] */ | |
34 | ||
35 | #define EI_MAG0 0 /* File identification byte 0 index */ | |
36 | #define ELFMAG0 0x7F /* Magic number byte 0 */ | |
37 | ||
38 | #define EI_MAG1 1 /* File identification byte 1 index */ | |
39 | #define ELFMAG1 'E' /* Magic number byte 1 */ | |
40 | ||
41 | #define EI_MAG2 2 /* File identification byte 2 index */ | |
42 | #define ELFMAG2 'L' /* Magic number byte 2 */ | |
43 | ||
44 | #define EI_MAG3 3 /* File identification byte 3 index */ | |
45 | #define ELFMAG3 'F' /* Magic number byte 3 */ | |
46 | ||
47 | #define EI_CLASS 4 /* File class */ | |
48 | #define ELFCLASSNONE 0 /* Invalid class */ | |
49 | #define ELFCLASS32 1 /* 32-bit objects */ | |
50 | #define ELFCLASS64 2 /* 64-bit objects */ | |
51 | ||
52 | #define EI_DATA 5 /* Data encoding */ | |
53 | #define ELFDATANONE 0 /* Invalid data encoding */ | |
54 | #define ELFDATA2LSB 1 /* 2's complement, little endian */ | |
55 | #define ELFDATA2MSB 2 /* 2's complement, big endian */ | |
56 | ||
57 | #define EI_VERSION 6 /* File version */ | |
58 | ||
59 | #define EI_PAD 7 /* Start of padding bytes */ | |
60 | ||
61 | ||
62 | /* Values for e_type, which identifies the object file type */ | |
63 | ||
64 | #define ET_NONE 0 /* No file type */ | |
65 | #define ET_REL 1 /* Relocatable file */ | |
66 | #define ET_EXEC 2 /* Executable file */ | |
67 | #define ET_DYN 3 /* Shared object file */ | |
68 | #define ET_CORE 4 /* Core file */ | |
69 | #define ET_LOPROC 0xFF00 /* Processor-specific */ | |
70 | #define ET_HIPROC 0xFFFF /* Processor-specific */ | |
71 | ||
72 | /* Values for e_machine, which identifies the architecture */ | |
73 | ||
e46bbae2 DE |
74 | #define EM_NONE 0 /* No machine */ |
75 | #define EM_M32 1 /* AT&T WE 32100 */ | |
76 | #define EM_SPARC 2 /* SUN SPARC */ | |
77 | #define EM_386 3 /* Intel 80386 */ | |
78 | #define EM_68K 4 /* Motorola m68k family */ | |
79 | #define EM_88K 5 /* Motorola m88k family */ | |
80 | #define EM_860 7 /* Intel 80860 */ | |
81 | #define EM_MIPS 8 /* MIPS R3000 (officially, big-endian only) */ | |
82 | ||
83 | #define EM_MIPS_RS4_BE 10 /* MIPS R4000 big-endian */ | |
84 | ||
85 | #define EM_SPARC64 11 /* SPARC v9 (not official) 64-bit */ | |
86 | ||
87 | #define EM_PARISC 15 /* HPPA */ | |
df9bd7f6 | 88 | |
e46bbae2 | 89 | #define EM_SPARC32PLUS 18 /* Sun's "v8plus" */ |
df9bd7f6 | 90 | |
e46bbae2 DE |
91 | #define EM_PPC 20 /* PowerPC */ |
92 | ||
4b7cbcf9 JL |
93 | #define EM_SH 42 /* Hitachi SH */ |
94 | ||
e46bbae2 DE |
95 | /* If it is necessary to assign new unofficial EM_* values, please pick large |
96 | random numbers (0x8523, 0xa7f2, etc.) to minimize the chances of collision | |
f4fcd63f ILT |
97 | with official or non-GNU unofficial values. |
98 | ||
99 | NOTE: Do not just increment the most recent number by one. | |
100 | Somebody else somewhere will do exactly the same thing, and you | |
101 | will have a collision. Instead, pick a random number. */ | |
e46bbae2 DE |
102 | |
103 | /* Cygnus PowerPC ELF backend. Written in the absence of an ABI. */ | |
104 | #define EM_CYGNUS_POWERPC 0x9025 | |
105 | ||
106 | /* Old version of PowerPC, this should be removed shortly. */ | |
107 | #define EM_PPC_OLD 17 | |
108 | ||
e46bbae2 | 109 | /* Cygnus ARC ELF backend. Written in the absence of an ABI. */ |
6fb197de | 110 | #define EM_CYGNUS_ARC 0x9040 |
c5053360 | 111 | |
1252987a DE |
112 | /* Cygnus M32R ELF backend. Written in the absence of an ABI. */ |
113 | #define EM_CYGNUS_M32R 0x9041 | |
1252987a | 114 | |
6fb197de MH |
115 | /* Alpha backend magic number. Written in the absence of an ABI. */ |
116 | #define EM_ALPHA 0x9026 | |
117 | ||
6fb197de | 118 | /* D10V backend magic number. Written in the absence of an ABI. */ |
1252987a | 119 | #define EM_CYGNUS_D10V 0x7650 |
6fb197de | 120 | |
3acdeb5e MH |
121 | /* start-sanitize-d30v */ |
122 | /* D30V backend magic number. Written in the absence of an ABI. */ | |
123 | #define EM_CYGNUS_D30V 0x7676 | |
124 | /* end-sanitize-d30v */ | |
125 | ||
4b7cbcf9 JL |
126 | /* start-sanitize-v850 */ |
127 | /* V850 backend magic number. Written in the absense of an ABI. */ | |
128 | #define EM_CYGNUS_V850 0x9080 | |
129 | /* end-sanitize-v850 */ | |
130 | ||
3acdeb5e MH |
131 | /* mn10200 and mn10300 backend magic numbers. |
132 | Written in the absense of an ABI. */ | |
133 | #define EM_CYGNUS_MN10200 0xdead | |
134 | #define EM_CYGNUS_MN10300 0xbeef | |
4b7cbcf9 | 135 | |
f4fcd63f ILT |
136 | /* See the above comment before you add a new EM_* value here. */ |
137 | ||
c5053360 FF |
138 | /* Values for e_version */ |
139 | ||
140 | #define EV_NONE 0 /* Invalid ELF version */ | |
141 | #define EV_CURRENT 1 /* Current version */ | |
142 | ||
143 | /* Values for program header, p_type field */ | |
144 | ||
145 | #define PT_NULL 0 /* Program header table entry unused */ | |
146 | #define PT_LOAD 1 /* Loadable program segment */ | |
147 | #define PT_DYNAMIC 2 /* Dynamic linking information */ | |
148 | #define PT_INTERP 3 /* Program interpreter */ | |
149 | #define PT_NOTE 4 /* Auxiliary information */ | |
150 | #define PT_SHLIB 5 /* Reserved, unspecified semantics */ | |
151 | #define PT_PHDR 6 /* Entry for header table itself */ | |
152 | #define PT_LOPROC 0x70000000 /* Processor-specific */ | |
153 | #define PT_HIPROC 0x7FFFFFFF /* Processor-specific */ | |
154 | ||
155 | /* Program segment permissions, in program header p_flags field */ | |
156 | ||
157 | #define PF_X (1 << 0) /* Segment is executable */ | |
158 | #define PF_W (1 << 1) /* Segment is writable */ | |
159 | #define PF_R (1 << 2) /* Segment is readable */ | |
160 | #define PF_MASKPROC 0xF0000000 /* Processor-specific reserved bits */ | |
161 | ||
162 | /* Values for section header, sh_type field */ | |
163 | ||
164 | #define SHT_NULL 0 /* Section header table entry unused */ | |
165 | #define SHT_PROGBITS 1 /* Program specific (private) data */ | |
166 | #define SHT_SYMTAB 2 /* Link editing symbol table */ | |
167 | #define SHT_STRTAB 3 /* A string table */ | |
168 | #define SHT_RELA 4 /* Relocation entries with addends */ | |
169 | #define SHT_HASH 5 /* A symbol hash table */ | |
170 | #define SHT_DYNAMIC 6 /* Information for dynamic linking */ | |
171 | #define SHT_NOTE 7 /* Information that marks file */ | |
172 | #define SHT_NOBITS 8 /* Section occupies no space in file */ | |
173 | #define SHT_REL 9 /* Relocation entries, no addends */ | |
174 | #define SHT_SHLIB 10 /* Reserved, unspecified semantics */ | |
175 | #define SHT_DYNSYM 11 /* Dynamic linking symbol table */ | |
56c4200b ILT |
176 | |
177 | /* The next three section types are defined by Solaris, and are named | |
178 | SHT_SUNW*. We use them in GNU code, so we also define SHT_GNU* | |
179 | versions. */ | |
180 | #define SHT_SUNW_verdef 0x6ffffffd /* Versions defined by file */ | |
181 | #define SHT_SUNW_verneed 0x6ffffffe /* Versions needed by file */ | |
182 | #define SHT_SUNW_versym 0x6fffffff /* Symbol versions */ | |
183 | ||
184 | #define SHT_GNU_verdef SHT_SUNW_verdef | |
185 | #define SHT_GNU_verneed SHT_SUNW_verneed | |
186 | #define SHT_GNU_versym SHT_SUNW_versym | |
187 | ||
c5053360 FF |
188 | #define SHT_LOPROC 0x70000000 /* Processor-specific semantics, lo */ |
189 | #define SHT_HIPROC 0x7FFFFFFF /* Processor-specific semantics, hi */ | |
190 | #define SHT_LOUSER 0x80000000 /* Application-specific semantics */ | |
191 | #define SHT_HIUSER 0x8FFFFFFF /* Application-specific semantics */ | |
192 | ||
193 | /* Values for section header, sh_flags field */ | |
194 | ||
195 | #define SHF_WRITE (1 << 0) /* Writable data during execution */ | |
196 | #define SHF_ALLOC (1 << 1) /* Occupies memory during execution */ | |
197 | #define SHF_EXECINSTR (1 << 2) /* Executable machine instructions */ | |
198 | #define SHF_MASKPROC 0xF0000000 /* Processor-specific semantics */ | |
199 | ||
200 | /* Values of note segment descriptor types for core files. */ | |
201 | ||
202 | #define NT_PRSTATUS 1 /* Contains copy of prstatus struct */ | |
203 | #define NT_FPREGSET 2 /* Contains copy of fpregset struct */ | |
204 | #define NT_PRPSINFO 3 /* Contains copy of prpsinfo struct */ | |
205 | ||
e46bbae2 DE |
206 | /* Values of note segment descriptor types for object files. */ |
207 | /* (Only for hppa right now. Should this be moved elsewhere?) */ | |
208 | ||
209 | #define NT_VERSION 1 /* Contains a version string. */ | |
210 | ||
c5053360 FF |
211 | /* These three macros disassemble and assemble a symbol table st_info field, |
212 | which contains the symbol binding and symbol type. The STB_ and STT_ | |
213 | defines identify the binding and type. */ | |
214 | ||
215 | #define ELF_ST_BIND(val) (((unsigned int)(val)) >> 4) | |
216 | #define ELF_ST_TYPE(val) ((val) & 0xF) | |
217 | #define ELF_ST_INFO(bind,type) (((bind) << 4) + ((type) & 0xF)) | |
218 | ||
e46bbae2 DE |
219 | #define STN_UNDEF 0 /* undefined symbol index */ |
220 | ||
c5053360 FF |
221 | #define STB_LOCAL 0 /* Symbol not visible outside obj */ |
222 | #define STB_GLOBAL 1 /* Symbol visible outside obj */ | |
223 | #define STB_WEAK 2 /* Like globals, lower precedence */ | |
224 | #define STB_LOPROC 13 /* Application-specific semantics */ | |
225 | #define STB_HIPROC 15 /* Application-specific semantics */ | |
226 | ||
227 | #define STT_NOTYPE 0 /* Symbol type is unspecified */ | |
228 | #define STT_OBJECT 1 /* Symbol is a data object */ | |
229 | #define STT_FUNC 2 /* Symbol is a code object */ | |
230 | #define STT_SECTION 3 /* Symbol associated with a section */ | |
231 | #define STT_FILE 4 /* Symbol gives a file name */ | |
232 | #define STT_LOPROC 13 /* Application-specific semantics */ | |
233 | #define STT_HIPROC 15 /* Application-specific semantics */ | |
234 | ||
235 | /* Special section indices, which may show up in st_shndx fields, among | |
236 | other places. */ | |
237 | ||
238 | #define SHN_UNDEF 0 /* Undefined section reference */ | |
e46bbae2 | 239 | #define SHN_LORESERVE 0xFF00 /* Begin range of reserved indices */ |
c5053360 FF |
240 | #define SHN_LOPROC 0xFF00 /* Begin range of appl-specific */ |
241 | #define SHN_HIPROC 0xFF1F /* End range of appl-specific */ | |
242 | #define SHN_ABS 0xFFF1 /* Associated symbol is absolute */ | |
243 | #define SHN_COMMON 0xFFF2 /* Associated symbol is in common */ | |
244 | #define SHN_HIRESERVE 0xFFFF /* End range of reserved indices */ | |
245 | ||
246 | /* relocation info handling macros */ | |
247 | ||
e46bbae2 DE |
248 | #define ELF32_R_SYM(i) ((i) >> 8) |
249 | #define ELF32_R_TYPE(i) ((i) & 0xff) | |
250 | #define ELF32_R_INFO(s,t) (((s) << 8) + ((t) & 0xff)) | |
251 | ||
252 | #define ELF64_R_SYM(i) ((i) >> 32) | |
253 | #define ELF64_R_TYPE(i) ((i) & 0xffffffff) | |
254 | #define ELF64_R_INFO(s,t) (((bfd_vma) (s) << 32) + (bfd_vma) (t)) | |
255 | ||
256 | /* Dynamic section tags */ | |
257 | ||
258 | #define DT_NULL 0 | |
259 | #define DT_NEEDED 1 | |
260 | #define DT_PLTRELSZ 2 | |
261 | #define DT_PLTGOT 3 | |
262 | #define DT_HASH 4 | |
263 | #define DT_STRTAB 5 | |
264 | #define DT_SYMTAB 6 | |
265 | #define DT_RELA 7 | |
266 | #define DT_RELASZ 8 | |
267 | #define DT_RELAENT 9 | |
268 | #define DT_STRSZ 10 | |
269 | #define DT_SYMENT 11 | |
270 | #define DT_INIT 12 | |
271 | #define DT_FINI 13 | |
272 | #define DT_SONAME 14 | |
273 | #define DT_RPATH 15 | |
274 | #define DT_SYMBOLIC 16 | |
275 | #define DT_REL 17 | |
276 | #define DT_RELSZ 18 | |
277 | #define DT_RELENT 19 | |
278 | #define DT_PLTREL 20 | |
279 | #define DT_DEBUG 21 | |
280 | #define DT_TEXTREL 22 | |
281 | #define DT_JMPREL 23 | |
56c4200b ILT |
282 | |
283 | /* The next four dynamic tags are used on Solaris. We support them | |
284 | everywhere. */ | |
285 | #define DT_VERDEF 0x6ffffffc | |
286 | #define DT_VERDEFNUM 0x6ffffffd | |
287 | #define DT_VERNEED 0x6ffffffe | |
288 | #define DT_VERNEEDNUM 0x6fffffff | |
289 | ||
290 | /* This tag is a GNU extension to the Solaris version scheme. */ | |
291 | #define DT_VERSYM 0x6ffffff0 | |
292 | ||
e46bbae2 DE |
293 | #define DT_LOPROC 0x70000000 |
294 | #define DT_HIPROC 0x7fffffff | |
295 | ||
3acdeb5e MH |
296 | /* These section tags are used on Solaris. We support them |
297 | everywhere, and hope they do not conflict. */ | |
298 | ||
299 | #define DT_AUXILIARY 0x7ffffffd | |
300 | #define DT_FILTER 0x7fffffff | |
301 | ||
56c4200b ILT |
302 | /* These constants are used for the version number of a Elf32_Verdef |
303 | structure. */ | |
304 | ||
305 | #define VER_DEF_NONE 0 | |
306 | #define VER_DEF_CURRENT 1 | |
307 | ||
308 | /* These constants appear in the vd_flags field of a Elf32_Verdef | |
309 | structure. */ | |
310 | ||
311 | #define VER_FLG_BASE 0x1 | |
312 | #define VER_FLG_WEAK 0x2 | |
313 | ||
314 | /* These special constants can be found in an Elf32_Versym field. */ | |
315 | ||
316 | #define VER_NDX_LOCAL 0 | |
317 | #define VER_NDX_GLOBAL 1 | |
318 | ||
319 | /* These constants are used for the version number of a Elf32_Verneed | |
320 | structure. */ | |
321 | ||
322 | #define VER_NEED_NONE 0 | |
323 | #define VER_NEED_CURRENT 1 | |
324 | ||
01aba636 NC |
325 | /* This flag appears in a Versym structure. It means that the symbol |
326 | is hidden, and is only visible with an explicit version number. | |
327 | This is a GNU extension. */ | |
328 | ||
329 | #define VERSYM_HIDDEN 0x8000 | |
330 | ||
331 | /* This is the mask for the rest of the Versym information. */ | |
332 | ||
333 | #define VERSYM_VERSION 0x7fff | |
334 | ||
56c4200b ILT |
335 | /* This is a special token which appears as part of a symbol name. It |
336 | indictes that the rest of the name is actually the name of a | |
337 | version node, and is not part of the actual name. This is a GNU | |
338 | extension. For example, the symbol name `stat@ver2' is taken to | |
339 | mean the symbol `stat' in version `ver2'. */ | |
340 | ||
341 | #define ELF_VER_CHR '@' | |
342 | ||
e46bbae2 | 343 | #endif /* _ELF_COMMON_H */ |