Fix typo.
[glibc/history.git] / elf / elf.h
blobd01bc90c901689e00210ca86c07159d2091961d9
1 /* This file defines standard ELF types, structures, and macros.
2 Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ian Lance Taylor <ian@cygnus.com>.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public License as
8 published by the Free Software Foundation; either version 2 of the
9 License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Library General Public License for more details.
16 You should have received a copy of the GNU Library General Public
17 License along with the GNU C Library; see the file COPYING.LIB. If not,
18 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 #ifndef _ELF_H
22 #define _ELF_H 1
24 #include <sys/cdefs.h>
26 __BEGIN_DECLS
28 /* Standard ELF types. */
30 #include <inttypes.h>
32 /* Type for a 16-bit quantity. */
33 typedef uint16_t Elf32_Half;
34 typedef uint16_t Elf64_Half;
36 /* Types for signed and unsigned 32-bit quantities. */
37 typedef uint32_t Elf32_Word;
38 typedef int32_t Elf32_Sword;
39 typedef uint32_t Elf64_Word;
40 typedef int32_t Elf64_Sword;
42 /* Types for signed and unsigned 64-bit quantities. */
43 typedef uint64_t Elf32_Xword;
44 typedef int64_t Elf32_Sxword;
45 typedef uint64_t Elf64_Xword;
46 typedef int64_t Elf64_Sxword;
48 /* Type of addresses. */
49 typedef uint32_t Elf32_Addr;
50 typedef uint64_t Elf64_Addr;
52 /* Type of file offsets. */
53 typedef uint32_t Elf32_Off;
54 typedef uint64_t Elf64_Off;
56 /* Type for section indices, which are 16-bit quantities. */
57 typedef uint16_t Elf32_Section;
58 typedef uint16_t Elf64_Section;
60 /* Type of symbol indices. */
61 typedef uint32_t Elf32_Symndx;
62 typedef uint64_t Elf64_Symndx;
65 /* The ELF file header. This appears at the start of every ELF file. */
67 #define EI_NIDENT (16)
69 typedef struct
71 unsigned char e_ident[EI_NIDENT]; /* Magic number and other info */
72 Elf32_Half e_type; /* Object file type */
73 Elf32_Half e_machine; /* Architecture */
74 Elf32_Word e_version; /* Object file version */
75 Elf32_Addr e_entry; /* Entry point virtual address */
76 Elf32_Off e_phoff; /* Program header table file offset */
77 Elf32_Off e_shoff; /* Section header table file offset */
78 Elf32_Word e_flags; /* Processor-specific flags */
79 Elf32_Half e_ehsize; /* ELF header size in bytes */
80 Elf32_Half e_phentsize; /* Program header table entry size */
81 Elf32_Half e_phnum; /* Program header table entry count */
82 Elf32_Half e_shentsize; /* Section header table entry size */
83 Elf32_Half e_shnum; /* Section header table entry count */
84 Elf32_Half e_shstrndx; /* Section header string table index */
85 } Elf32_Ehdr;
87 typedef struct
89 unsigned char e_ident[EI_NIDENT]; /* Magic number and other info */
90 Elf64_Half e_type; /* Object file type */
91 Elf64_Half e_machine; /* Architecture */
92 Elf64_Word e_version; /* Object file version */
93 Elf64_Addr e_entry; /* Entry point virtual address */
94 Elf64_Off e_phoff; /* Program header table file offset */
95 Elf64_Off e_shoff; /* Section header table file offset */
96 Elf64_Word e_flags; /* Processor-specific flags */
97 Elf64_Half e_ehsize; /* ELF header size in bytes */
98 Elf64_Half e_phentsize; /* Program header table entry size */
99 Elf64_Half e_phnum; /* Program header table entry count */
100 Elf64_Half e_shentsize; /* Section header table entry size */
101 Elf64_Half e_shnum; /* Section header table entry count */
102 Elf64_Half e_shstrndx; /* Section header string table index */
103 } Elf64_Ehdr;
105 /* Fields in the e_ident array. The EI_* macros are indices into the
106 array. The macros under each EI_* macro are the values the byte
107 may have. */
109 #define EI_MAG0 0 /* File identification byte 0 index */
110 #define ELFMAG0 0x7f /* Magic number byte 0 */
112 #define EI_MAG1 1 /* File identification byte 1 index */
113 #define ELFMAG1 'E' /* Magic number byte 1 */
115 #define EI_MAG2 2 /* File identification byte 2 index */
116 #define ELFMAG2 'L' /* Magic number byte 2 */
118 #define EI_MAG3 3 /* File identification byte 3 index */
119 #define ELFMAG3 'F' /* Magic number byte 3 */
121 /* Conglomeration of the identification bytes, for easy testing as a word. */
122 #define ELFMAG "\177ELF"
123 #define SELFMAG 4
125 #define EI_CLASS 4 /* File class byte index */
126 #define ELFCLASSNONE 0 /* Invalid class */
127 #define ELFCLASS32 1 /* 32-bit objects */
128 #define ELFCLASS64 2 /* 64-bit objects */
130 #define EI_DATA 5 /* Data encoding byte index */
131 #define ELFDATANONE 0 /* Invalid data encoding */
132 #define ELFDATA2LSB 1 /* 2's complement, little endian */
133 #define ELFDATA2MSB 2 /* 2's complement, big endian */
135 #define EI_VERSION 6 /* File version byte index */
136 /* Value must be EV_CURRENT */
138 #define EI_PAD 7 /* Byte index of padding bytes */
140 /* Legal values for e_type (object file type). */
142 #define ET_NONE 0 /* No file type */
143 #define ET_REL 1 /* Relocatable file */
144 #define ET_EXEC 2 /* Executable file */
145 #define ET_DYN 3 /* Shared object file */
146 #define ET_CORE 4 /* Core file */
147 #define ET_NUM 5 /* Number of defined types. */
148 #define ET_LOPROC 0xff00 /* Processor-specific */
149 #define ET_HIPROC 0xffff /* Processor-specific */
151 /* Legal values for e_machine (architecture). */
153 #define EM_NONE 0 /* No machine */
154 #define EM_M32 1 /* AT&T WE 32100 */
155 #define EM_SPARC 2 /* SUN SPARC */
156 #define EM_386 3 /* Intel 80386 */
157 #define EM_68K 4 /* Motorola m68k family */
158 #define EM_88K 5 /* Motorola m88k family */
159 #define EM_486 6 /* Intel 80486 */
160 #define EM_860 7 /* Intel 80860 */
161 #define EM_MIPS 8 /* MIPS R3000 big-endian */
162 #define EM_S370 9 /* Amdahl */
163 #define EM_MIPS_RS4_BE 10 /* MIPS R4000 big-endian */
165 #define EM_SPARC64 11 /* SPARC v9 (not official) 64-bit */
167 #define EM_PARISC 15 /* HPPA */
168 #define EM_PPC 20 /* PowerPC */
170 /* If it is necessary to assign new unofficial EM_* values, please
171 pick large random numbers (0x8523, 0xa7f2, etc.) to minimize the
172 chances of collision with official or non-GNU unofficial values. */
174 #define EM_ALPHA 0x9026
176 /* Legal values for e_version (version). */
178 #define EV_NONE 0 /* Invalid ELF version */
179 #define EV_CURRENT 1 /* Current version */
181 /* Section header. */
183 typedef struct
185 Elf32_Word sh_name; /* Section name (string tbl index) */
186 Elf32_Word sh_type; /* Section type */
187 Elf32_Word sh_flags; /* Section flags */
188 Elf32_Addr sh_addr; /* Section virtual addr at execution */
189 Elf32_Off sh_offset; /* Section file offset */
190 Elf32_Word sh_size; /* Section size in bytes */
191 Elf32_Word sh_link; /* Link to another section */
192 Elf32_Word sh_info; /* Additional section information */
193 Elf32_Word sh_addralign; /* Section alignment */
194 Elf32_Word sh_entsize; /* Entry size if section holds table */
195 } Elf32_Shdr;
197 typedef struct
199 Elf64_Word sh_name; /* Section name (string tbl index) */
200 Elf64_Word sh_type; /* Section type */
201 Elf64_Xword sh_flags; /* Section flags */
202 Elf64_Addr sh_addr; /* Section virtual addr at execution */
203 Elf64_Off sh_offset; /* Section file offset */
204 Elf64_Xword sh_size; /* Section size in bytes */
205 Elf64_Word sh_link; /* Link to another section */
206 Elf64_Word sh_info; /* Additional section information */
207 Elf64_Xword sh_addralign; /* Section alignment */
208 Elf64_Xword sh_entsize; /* Entry size if section holds table */
209 } Elf64_Shdr;
211 /* Special section indices. */
213 #define SHN_UNDEF 0 /* Undefined section */
214 #define SHN_LORESERVE 0xff00 /* Start of reserved indices */
215 #define SHN_LOPROC 0xff00 /* Start of processor-specific */
216 #define SHN_HIPROC 0xff1f /* End of processor-specific */
217 #define SHN_ABS 0xfff1 /* Associated symbol is absolute */
218 #define SHN_COMMON 0xfff2 /* Associated symbol is common */
219 #define SHN_HIRESERVE 0xffff /* End of reserved indices */
221 /* Legal values for sh_type (section type). */
223 #define SHT_NULL 0 /* Section header table entry unused */
224 #define SHT_PROGBITS 1 /* Program data */
225 #define SHT_SYMTAB 2 /* Symbol table */
226 #define SHT_STRTAB 3 /* String table */
227 #define SHT_RELA 4 /* Relocation entries with addends */
228 #define SHT_HASH 5 /* Symbol hash table */
229 #define SHT_DYNAMIC 6 /* Dynamic linking information */
230 #define SHT_NOTE 7 /* Notes */
231 #define SHT_NOBITS 8 /* Program space with no data (bss) */
232 #define SHT_REL 9 /* Relocation entries, no addends */
233 #define SHT_SHLIB 10 /* Reserved */
234 #define SHT_DYNSYM 11 /* Dynamic linker symbol table */
235 #define SHT_NUM 12 /* Number of defined types. */
236 #define SHT_LOSUNW 0x6ffffffd /* Sun-specific low bound. */
237 #define SHT_GNU_verdef 0x6ffffffd /* Version definition section. */
238 #define SHT_GNU_verneed 0x6ffffffe /* Version needs section. */
239 #define SHT_GNU_versym 0x6fffffff /* Version symbol table. */
240 #define SHT_HISUNW 0x6fffffff /* Sun-specific high bound. */
241 #define SHT_LOPROC 0x70000000 /* Start of processor-specific */
242 #define SHT_HIPROC 0x7fffffff /* End of processor-specific */
243 #define SHT_LOUSER 0x80000000 /* Start of application-specific */
244 #define SHT_HIUSER 0x8fffffff /* End of application-specific */
246 /* Legal values for sh_flags (section flags). */
248 #define SHF_WRITE (1 << 0) /* Writable */
249 #define SHF_ALLOC (1 << 1) /* Occupies memory during execution */
250 #define SHF_EXECINSTR (1 << 2) /* Executable */
251 #define SHF_MASKPROC 0xf0000000 /* Processor-specific */
253 /* Symbol table entry. */
255 typedef struct
257 Elf32_Word st_name; /* Symbol name (string tbl index) */
258 Elf32_Addr st_value; /* Symbol value */
259 Elf32_Word st_size; /* Symbol size */
260 unsigned char st_info; /* Symbol type and binding */
261 unsigned char st_other; /* No defined meaning, 0 */
262 Elf32_Section st_shndx; /* Section index */
263 } Elf32_Sym;
265 typedef struct
267 Elf64_Word st_name; /* Symbol name (string tbl index) */
268 unsigned char st_info; /* Symbol type and binding */
269 unsigned char st_other; /* No defined meaning, 0 */
270 Elf64_Section st_shndx; /* Section index */
271 Elf64_Addr st_value; /* Symbol value */
272 Elf64_Xword st_size; /* Symbol size */
273 } Elf64_Sym;
275 /* Special section index. */
277 #define SHN_UNDEF 0 /* No section, undefined symbol. */
279 /* How to extract and insert information held in the st_info field. */
281 #define ELF32_ST_BIND(val) (((unsigned char) (val)) >> 4)
282 #define ELF32_ST_TYPE(val) ((val) & 0xf)
283 #define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
285 /* Both Elf32_Sym and Elf64_Sym use the same one-byte st_info field. */
286 #define ELF64_ST_BIND(val) ELF32_ST_BIND (val)
287 #define ELF64_ST_TYPE(val) ELF32_ST_TYPE (val)
288 #define ELF64_ST_INFO(bind, type) ELF32_ST_INFO ((bind), (type))
290 /* Legal values for ST_BIND subfield of st_info (symbol binding). */
292 #define STB_LOCAL 0 /* Local symbol */
293 #define STB_GLOBAL 1 /* Global symbol */
294 #define STB_WEAK 2 /* Weak symbol */
295 #define STB_NUM 3 /* Number of defined types. */
296 #define STB_LOPROC 13 /* Start of processor-specific */
297 #define STB_HIPROC 15 /* End of processor-specific */
299 /* Legal values for ST_TYPE subfield of st_info (symbol type). */
301 #define STT_NOTYPE 0 /* Symbol type is unspecified */
302 #define STT_OBJECT 1 /* Symbol is a data object */
303 #define STT_FUNC 2 /* Symbol is a code object */
304 #define STT_SECTION 3 /* Symbol associated with a section */
305 #define STT_FILE 4 /* Symbol's name is file name */
306 #define STT_NUM 5 /* Number of defined types. */
307 #define STT_LOPROC 13 /* Start of processor-specific */
308 #define STT_HIPROC 15 /* End of processor-specific */
311 /* Symbol table indices are found in the hash buckets and chain table
312 of a symbol hash table section. This special index value indicates
313 the end of a chain, meaning no further symbols are found in that bucket. */
315 #define STN_UNDEF 0 /* End of a chain. */
318 /* Relocation table entry without addend (in section of type SHT_REL). */
320 typedef struct
322 Elf32_Addr r_offset; /* Address */
323 Elf32_Word r_info; /* Relocation type and symbol index */
324 } Elf32_Rel;
326 /* I have seen two different definitions of the Elf64_Rel and
327 Elf64_Rela structures, so we'll leave them out until Novell (or
328 whoever) gets their act together. */
329 /* The following, at least, is used on Sparc v9, MIPS, and Alpha. */
331 typedef struct
333 Elf64_Addr r_offset; /* Address */
334 Elf64_Xword r_info; /* Relocation type and symbol index */
335 } Elf64_Rel;
337 /* Relocation table entry with addend (in section of type SHT_RELA). */
339 typedef struct
341 Elf32_Addr r_offset; /* Address */
342 Elf32_Word r_info; /* Relocation type and symbol index */
343 Elf32_Sword r_addend; /* Addend */
344 } Elf32_Rela;
346 typedef struct
348 Elf64_Addr r_offset; /* Address */
349 Elf64_Xword r_info; /* Relocation type and symbol index */
350 Elf64_Sxword r_addend; /* Addend */
351 } Elf64_Rela;
353 /* How to extract and insert information held in the r_info field. */
355 #define ELF32_R_SYM(val) ((val) >> 8)
356 #define ELF32_R_TYPE(val) ((val) & 0xff)
357 #define ELF32_R_INFO(sym, type) (((sym) << 8) + ((type) & 0xff))
359 #define ELF64_R_SYM(i) ((i) >> 32)
360 #define ELF64_R_TYPE(i) ((i) & 0xffffffff)
361 #define ELF64_R_INFO(sym,type) (((sym) << 32) + (type))
363 /* Program segment header. */
365 typedef struct
367 Elf32_Word p_type; /* Segment type */
368 Elf32_Off p_offset; /* Segment file offset */
369 Elf32_Addr p_vaddr; /* Segment virtual address */
370 Elf32_Addr p_paddr; /* Segment physical address */
371 Elf32_Word p_filesz; /* Segment size in file */
372 Elf32_Word p_memsz; /* Segment size in memory */
373 Elf32_Word p_flags; /* Segment flags */
374 Elf32_Word p_align; /* Segment alignment */
375 } Elf32_Phdr;
377 typedef struct
379 Elf64_Word p_type; /* Segment type */
380 Elf64_Word p_flags; /* Segment flags */
381 Elf64_Off p_offset; /* Segment file offset */
382 Elf64_Addr p_vaddr; /* Segment virtual address */
383 Elf64_Addr p_paddr; /* Segment physical address */
384 Elf64_Xword p_filesz; /* Segment size in file */
385 Elf64_Xword p_memsz; /* Segment size in memory */
386 Elf64_Xword p_align; /* Segment alignment */
387 } Elf64_Phdr;
389 /* Legal values for p_type (segment type). */
391 #define PT_NULL 0 /* Program header table entry unused */
392 #define PT_LOAD 1 /* Loadable program segment */
393 #define PT_DYNAMIC 2 /* Dynamic linking information */
394 #define PT_INTERP 3 /* Program interpreter */
395 #define PT_NOTE 4 /* Auxiliary information */
396 #define PT_SHLIB 5 /* Reserved */
397 #define PT_PHDR 6 /* Entry for header table itself */
398 #define PT_NUM 7 /* Number of defined types. */
399 #define PT_LOPROC 0x70000000 /* Start of processor-specific */
400 #define PT_HIPROC 0x7fffffff /* End of processor-specific */
402 /* Legal values for p_flags (segment flags). */
404 #define PF_X (1 << 0) /* Segment is executable */
405 #define PF_W (1 << 1) /* Segment is writable */
406 #define PF_R (1 << 2) /* Segment is readable */
407 #define PF_MASKPROC 0xf0000000 /* Processor-specific */
409 /* Legal values for note segment descriptor types for core files. */
411 #define NT_PRSTATUS 1 /* Contains copy of prstatus struct */
412 #define NT_FPREGSET 2 /* Contains copy of fpregset struct */
413 #define NT_PRPSINFO 3 /* Contains copy of prpsinfo struct */
415 /* Legal values for the note segment descriptor types for object files. */
417 #define NT_VERSION 1 /* Contains a version string. */
420 /* Dynamic section entry. */
422 typedef struct
424 Elf32_Sword d_tag; /* Dynamic entry type */
425 union
427 Elf32_Word d_val; /* Integer value */
428 Elf32_Addr d_ptr; /* Address value */
429 } d_un;
430 } Elf32_Dyn;
432 typedef struct
434 Elf64_Sxword d_tag; /* Dynamic entry type */
435 union
437 Elf64_Xword d_val; /* Integer value */
438 Elf64_Addr d_ptr; /* Address value */
439 } d_un;
440 } Elf64_Dyn;
442 /* Legal values for d_tag (dynamic entry type). */
444 #define DT_NULL 0 /* Marks end of dynamic section */
445 #define DT_NEEDED 1 /* Name of needed library */
446 #define DT_PLTRELSZ 2 /* Size in bytes of PLT relocs */
447 #define DT_PLTGOT 3 /* Processor defined value */
448 #define DT_HASH 4 /* Address of symbol hash table */
449 #define DT_STRTAB 5 /* Address of string table */
450 #define DT_SYMTAB 6 /* Address of symbol table */
451 #define DT_RELA 7 /* Address of Rela relocs */
452 #define DT_RELASZ 8 /* Total size of Rela relocs */
453 #define DT_RELAENT 9 /* Size of one Rela reloc */
454 #define DT_STRSZ 10 /* Size of string table */
455 #define DT_SYMENT 11 /* Size of one symbol table entry */
456 #define DT_INIT 12 /* Address of init function */
457 #define DT_FINI 13 /* Address of termination function */
458 #define DT_SONAME 14 /* Name of shared object */
459 #define DT_RPATH 15 /* Library search path */
460 #define DT_SYMBOLIC 16 /* Start symbol search here */
461 #define DT_REL 17 /* Address of Rel relocs */
462 #define DT_RELSZ 18 /* Total size of Rel relocs */
463 #define DT_RELENT 19 /* Size of one Rel reloc */
464 #define DT_PLTREL 20 /* Type of reloc in PLT */
465 #define DT_DEBUG 21 /* For debugging; unspecified */
466 #define DT_TEXTREL 22 /* Reloc might modify .text */
467 #define DT_JMPREL 23 /* Address of PLT relocs */
468 #define DT_NUM 24 /* Number used */
469 #define DT_LOPROC 0x70000000 /* Start of processor-specific */
470 #define DT_HIPROC 0x7fffffff /* End of processor-specific */
471 #define DT_PROCNUM DT_MIPS_NUM /* Most used by any processor */
473 /* The versioning entry types. The next are defined as part of the
474 GNU extension. */
475 #define DT_VERSYM 0x6ffffff0
477 /* These were chosen by Sun. */
478 #define DT_VERDEF 0x6ffffffc /* Address of version definition
479 table */
480 #define DT_VERDEFNUM 0x6ffffffd /* Number of version definitions */
481 #define DT_VERNEED 0x6ffffffe /* Address of table with needed
482 versions */
483 #define DT_VERNEEDNUM 0x6fffffff /* Number of needed versions */
484 #define DT_VERSIONTAGIDX(tag) (DT_VERNEEDNUM - (tag)) /* Reverse order! */
485 #define DT_VERSIONTAGNUM 16
487 /* Sun added these machine-independent extensions in the "processor-specific"
488 range. Be compatible. */
489 #define DT_AUXILIARY 0x7ffffffd /* Shared object to load before self */
490 #define DT_FILTER 0x7fffffff /* Shared object to get values from */
491 #define DT_EXTRATAGIDX(tag) ((Elf32_Word)-((Elf32_Sword) (tag) <<1>>1)-1)
492 #define DT_EXTRANUM 3
494 /* Version definition sections. */
496 typedef struct
498 Elf32_Half vd_version; /* Version revision */
499 Elf32_Half vd_flags; /* Version information */
500 Elf32_Half vd_ndx; /* Version Index */
501 Elf32_Half vd_cnt; /* Number of associated aux entries */
502 Elf32_Word vd_hash; /* Version name hash value */
503 Elf32_Word vd_aux; /* Offset in bytes to verdaux array */
504 Elf32_Word vd_next; /* Offset in bytes to next verdef
505 entry */
506 } Elf32_Verdef;
508 /* XXX We have no information what types should be used for 64 bit
509 architectures. What is following is only an intelligent guess. */
510 typedef struct
512 Elf64_Half vd_version; /* Version revision */
513 Elf64_Half vd_flags; /* Version information */
514 Elf64_Half vd_ndx; /* Version Index */
515 Elf64_Half vd_cnt; /* Number of associated aux entries */
516 Elf64_Word vd_hash; /* Version name hash value */
517 Elf64_Word vd_aux; /* Offset in bytes to verdaux array */
518 Elf64_Word vd_next; /* Offset in bytes to next verdef
519 entry */
520 } Elf64_Verdef;
522 /* Legal values for vd_version (version revision). */
523 #define VER_DEF_NONE 0 /* No version */
524 #define VER_DEF_CURRENT 1 /* Current version */
525 #define VER_DEF_NUM 2 /* Given version number */
527 /* Legal values for vd_flags (version information flags). */
528 #define VER_FLG_BASE 0x1 /* Version definition of file itself */
529 #define VER_FLG_WEAK 0x2 /* Weak version identifier */
531 /* Auxialiary version information. */
533 typedef struct
535 Elf32_Addr vda_name; /* Version or dependency names */
536 Elf32_Word vda_next; /* Offset in bytes to next verdaux
537 entry */
538 } Elf32_Verdaux;
540 /* XXX We have no information what types should be used for 64 bit
541 architectures. What is following is only an intelligent guess. */
542 typedef struct
544 Elf64_Addr vda_name; /* Version or dependency names */
545 Elf64_Word vda_next; /* Offset in bytes to next verdaux
546 entry */
547 } Elf64_Verdaux;
549 /* Version dependency section. */
551 typedef struct
553 Elf32_Half vn_version; /* Version of structure */
554 Elf32_Half vn_cnt; /* Number of associated aux entries */
555 Elf32_Addr vn_file; /* Offset of filename for this
556 dependency */
557 Elf32_Word vn_aux; /* Offset in bytes to vernaux array */
558 Elf32_Word vn_next; /* Offset in bytes to next verneed
559 entry */
560 } Elf32_Verneed;
562 /* XXX We have no information what types should be used for 64 bit
563 architectures. What is following is only an intelligent guess. */
564 typedef struct
566 Elf64_Half vn_version; /* Version of structure */
567 Elf64_Half vn_cnt; /* Number of associated aux entries */
568 Elf64_Addr vn_file; /* Offset of filename for this
569 dependency */
570 Elf64_Word vn_aux; /* Offset in bytes to vernaux array */
571 Elf64_Word vn_next; /* Offset in bytes to next verneed
572 entry */
573 } Elf64_Verneed;
575 /* Legal values for vn_version (version revision). */
576 #define VER_NEED_NONE 0 /* No version */
577 #define VER_NEED_CURRENT 1 /* Current version */
578 #define VER_NEED_NUM 2 /* Given version number */
580 /* Auxiliary needed version information. */
582 typedef struct
584 Elf32_Word vna_hash; /* Hash value of dependency name */
585 Elf32_Half vna_flags; /* Dependency specific information */
586 Elf32_Half vna_other; /* Unused */
587 Elf32_Addr vna_name; /* Dependency name string offset */
588 Elf32_Word vna_next; /* Offset in bytes to next vernaux
589 entry */
590 } Elf32_Vernaux;
592 /* XXX We have no information what types should be used for 64 bit
593 architectures. What is following is only an intelligent guess. */
594 typedef struct
596 Elf64_Word vna_hash; /* Hash value of dependency name */
597 Elf64_Half vna_flags; /* Dependency specific information */
598 Elf64_Half vna_other; /* Unused */
599 Elf64_Addr vna_name; /* Dependency name string offset */
600 Elf64_Word vna_next; /* Offset in bytes to next vernaux
601 entry */
602 } Elf64_Vernaux;
604 /* Legal values for vna_flags. */
605 #define VER_FLG_WEAK 0x2 /* Weak verison identifier */
608 /* Auxiliary vector. */
610 /* This vector is normally only used by the program interpreter. The
611 usual definition in an ABI supplement uses the name auxv_t. The
612 vector is not usually defined in a standard <elf.h> file, but it
613 can't hurt. We rename it to avoid conflicts. The sizes of these
614 types are an arrangement between the exec server and the program
615 interpreter, so we don't fully specify them here. */
617 typedef struct
619 int a_type; /* Entry type */
620 union
622 long int a_val; /* Integer value */
623 void *a_ptr; /* Pointer value */
624 void (*a_fcn) (void); /* Function pointer value */
625 } a_un;
626 } Elf32_auxv_t;
628 typedef struct
630 long int a_type; /* Entry type */
631 union
633 long int a_val; /* Integer value */
634 void *a_ptr; /* Pointer value */
635 void (*a_fcn) (void); /* Function pointer value */
636 } a_un;
637 } Elf64_auxv_t;
639 /* Legal values for a_type (entry type). */
641 #define AT_NULL 0 /* End of vector */
642 #define AT_IGNORE 1 /* Entry should be ignored */
643 #define AT_EXECFD 2 /* File descriptor of program */
644 #define AT_PHDR 3 /* Program headers for program */
645 #define AT_PHENT 4 /* Size of program header entry */
646 #define AT_PHNUM 5 /* Number of program headers */
647 #define AT_PAGESZ 6 /* System page size */
648 #define AT_BASE 7 /* Base address of interpreter */
649 #define AT_FLAGS 8 /* Flags */
650 #define AT_ENTRY 9 /* Entry point of program */
651 #define AT_NOTELF 10 /* Program is not ELF */
652 #define AT_UID 11 /* Real uid */
653 #define AT_EUID 12 /* Effective uid */
654 #define AT_GID 13 /* Real gid */
655 #define AT_EGID 14 /* Effective gid */
657 /* Motorola 68k specific definitions. */
659 /* m68k relocs. */
661 #define R_68K_NONE 0 /* No reloc */
662 #define R_68K_32 1 /* Direct 32 bit */
663 #define R_68K_16 2 /* Direct 16 bit */
664 #define R_68K_8 3 /* Direct 8 bit */
665 #define R_68K_PC32 4 /* PC relative 32 bit */
666 #define R_68K_PC16 5 /* PC relative 16 bit */
667 #define R_68K_PC8 6 /* PC relative 8 bit */
668 #define R_68K_GOT32 7 /* 32 bit PC relative GOT entry */
669 #define R_68K_GOT16 8 /* 16 bit PC relative GOT entry */
670 #define R_68K_GOT8 9 /* 8 bit PC relative GOT entry */
671 #define R_68K_GOT32O 10 /* 32 bit GOT offset */
672 #define R_68K_GOT16O 11 /* 16 bit GOT offset */
673 #define R_68K_GOT8O 12 /* 8 bit GOT offset */
674 #define R_68K_PLT32 13 /* 32 bit PC relative PLT address */
675 #define R_68K_PLT16 14 /* 16 bit PC relative PLT address */
676 #define R_68K_PLT8 15 /* 8 bit PC relative PLT address */
677 #define R_68K_PLT32O 16 /* 32 bit PLT offset */
678 #define R_68K_PLT16O 17 /* 16 bit PLT offset */
679 #define R_68K_PLT8O 18 /* 8 bit PLT offset */
680 #define R_68K_COPY 19 /* Copy symbol at runtime */
681 #define R_68K_GLOB_DAT 20 /* Create GOT entry */
682 #define R_68K_JMP_SLOT 21 /* Create PLT entry */
683 #define R_68K_RELATIVE 22 /* Adjust by program base */
685 /* Intel 80386 specific definitions. */
687 /* i386 relocs. */
689 #define R_386_NONE 0 /* No reloc */
690 #define R_386_32 1 /* Direct 32 bit */
691 #define R_386_PC32 2 /* PC relative 32 bit */
692 #define R_386_GOT32 3 /* 32 bit GOT entry */
693 #define R_386_PLT32 4 /* 32 bit PLT address */
694 #define R_386_COPY 5 /* Copy symbol at runtime */
695 #define R_386_GLOB_DAT 6 /* Create GOT entry */
696 #define R_386_JMP_SLOT 7 /* Create PLT entry */
697 #define R_386_RELATIVE 8 /* Adjust by program base */
698 #define R_386_GOTOFF 9 /* 32 bit offset to GOT */
699 #define R_386_GOTPC 10 /* 32 bit PC relative offset to GOT */
701 /* SUN SPARC specific definitions. */
703 /* SPARC relocs. */
705 #define R_SPARC_NONE 0 /* No reloc */
706 #define R_SPARC_8 1 /* Direct 8 bit */
707 #define R_SPARC_16 2 /* Direct 16 bit */
708 #define R_SPARC_32 3 /* Direct 32 bit */
709 #define R_SPARC_DISP8 4 /* PC relative 8 bit */
710 #define R_SPARC_DISP16 5 /* PC relative 16 bit */
711 #define R_SPARC_DISP32 6 /* PC relative 32 bit */
712 #define R_SPARC_WDISP30 7 /* PC relative 30 bit shifted */
713 #define R_SPARC_WDISP22 8 /* PC relative 22 bit shifted */
714 #define R_SPARC_HI22 9 /* High 22 bit */
715 #define R_SPARC_22 10 /* Direct 22 bit */
716 #define R_SPARC_13 11 /* Direct 13 bit */
717 #define R_SPARC_LO10 12 /* Truncated 10 bit */
718 #define R_SPARC_GOT10 13 /* Truncated 10 bit GOT entry */
719 #define R_SPARC_GOT13 14 /* 13 bit GOT entry */
720 #define R_SPARC_GOT22 15 /* 22 bit GOT entry shifted */
721 #define R_SPARC_PC10 16 /* PC relative 10 bit truncated */
722 #define R_SPARC_PC22 17 /* PC relative 22 bit shifted */
723 #define R_SPARC_WPLT30 18 /* 30 bit PC relative PLT address */
724 #define R_SPARC_COPY 19 /* Copy symbol at runtime */
725 #define R_SPARC_GLOB_DAT 20 /* Create GOT entry */
726 #define R_SPARC_JMP_SLOT 21 /* Create PLT entry */
727 #define R_SPARC_RELATIVE 22 /* Adjust by program base */
728 #define R_SPARC_UA32 23 /* Direct 32 bit unaligned */
730 /* MIPS R3000 specific definitions. */
732 /* Legal values for e_flags field of Elf32_Ehdr. */
734 #define EF_MIPS_NOREORDER 1 /* A .noreorder directive was used */
735 #define EF_MIPS_PIC 2 /* Contains PIC code */
736 #define EF_MIPS_CPIC 4 /* Uses PIC calling sequence */
737 #define EF_MIPS_ARCH 0xf0000000 /* MIPS architecture level */
739 /* Legal values for MIPS architecture level. */
741 #define E_MIPS_ARCH_1 0x00000000 /* -mips1 code. */
742 #define E_MIPS_ARCH_2 0x10000000 /* -mips2 code. */
743 #define E_MIPS_ARCH_3 0x20000000 /* -mips3 code. */
744 #define E_MIPS_ARCH_4 0x30000000 /* -mips4 code. */
745 #define E_MIPS_ARCH_5 0x40000000 /* -mips5 code. */
747 /* Special section indices. */
749 #define SHN_MIPS_ACOMMON 0xff00 /* Allocated common symbols */
750 #define SHN_MIPS_TEXT 0xff01 /* Allocated test symbols. */
751 #define SHN_MIPS_DATA 0xff02 /* Allocated data symbols. */
752 #define SHN_MIPS_SCOMMON 0xff03 /* Small common symbols */
753 #define SHN_MIPS_SUNDEFINED 0xff04 /* Small undefined symbols */
755 /* Legal values for sh_type field of Elf32_Shdr. */
757 #define SHT_MIPS_LIBLIST 0x70000000 /* Shared objects used in link */
758 #define SHT_MIPS_CONFLICT 0x70000002 /* Conflicting symbols */
759 #define SHT_MIPS_GPTAB 0x70000003 /* Global data area sizes */
760 #define SHT_MIPS_UCODE 0x70000004 /* Reserved for SGI/MIPS compilers */
761 #define SHT_MIPS_DEBUG 0x70000005 /* MIPS ECOFF debugging information */
762 #define SHT_MIPS_REGINFO 0x70000006 /* Register usage information */
763 #define SHT_MIPS_OPTIONS 0x7000000d /* Miscellaneous options. */
764 #define SHT_MIPS_DWARF 0x7000001e /* DWARF debugging information. */
765 #define SHT_MIPS_EVENTS 0x70000021 /* Event section. */
767 /* Legal values for sh_flags field of Elf32_Shdr. */
769 #define SHF_MIPS_GPREL 0x10000000 /* Must be part of global data area */
771 /* Entries found in sections of type SHT_MIPS_GPTAB. */
773 typedef union
775 struct
777 Elf32_Word gt_current_g_value; /* -G value used for compilation */
778 Elf32_Word gt_unused; /* Not used */
779 } gt_header; /* First entry in section */
780 struct
782 Elf32_Word gt_g_value; /* If this value were used for -G */
783 Elf32_Word gt_bytes; /* This many bytes would be used */
784 } gt_entry; /* Subsequent entries in section */
785 } Elf32_gptab;
787 /* Entry found in sections of type SHT_MIPS_REGINFO. */
789 typedef struct
791 Elf32_Word ri_gprmask; /* General registers used */
792 Elf32_Word ri_cprmask[4]; /* Coprocessor registers used */
793 Elf32_Sword ri_gp_value; /* $gp register value */
794 } Elf32_RegInfo;
796 /* MIPS relocs. */
798 #define R_MIPS_NONE 0 /* No reloc */
799 #define R_MIPS_16 1 /* Direct 16 bit */
800 #define R_MIPS_32 2 /* Direct 32 bit */
801 #define R_MIPS_REL32 3 /* PC relative 32 bit */
802 #define R_MIPS_26 4 /* Direct 26 bit shifted */
803 #define R_MIPS_HI16 5 /* High 16 bit */
804 #define R_MIPS_LO16 6 /* Low 16 bit */
805 #define R_MIPS_GPREL16 7 /* GP relative 16 bit */
806 #define R_MIPS_LITERAL 8 /* 16 bit literal entry */
807 #define R_MIPS_GOT16 9 /* 16 bit GOT entry */
808 #define R_MIPS_PC16 10 /* PC relative 16 bit */
809 #define R_MIPS_CALL16 11 /* 16 bit GOT entry for function */
810 #define R_MIPS_GPREL32 12 /* GP relative 32 bit */
812 /* Legal values for p_type field of Elf32_Phdr. */
814 #define PT_MIPS_REGINFO 0x70000000 /* Register usage information */
815 #define PT_MIPS_RTPROC 0x70000001 /* Runtime procedure table. */
816 #define PT_MIPS_OPTIONS 0x70000002
818 /* Legal values for d_tag field of Elf32_Dyn. */
820 #define DT_MIPS_RLD_VERSION 0x70000001 /* Runtime linker interface version */
821 #define DT_MIPS_TIME_STAMP 0x70000002 /* Timestamp */
822 #define DT_MIPS_ICHECKSUM 0x70000003 /* Checksum */
823 #define DT_MIPS_IVERSION 0x70000004 /* Version string (string tbl index) */
824 #define DT_MIPS_FLAGS 0x70000005 /* Flags */
825 #define DT_MIPS_BASE_ADDRESS 0x70000006 /* Base address */
826 #define DT_MIPS_CONFLICT 0x70000008 /* Address of CONFLICT section */
827 #define DT_MIPS_LIBLIST 0x70000009 /* Address of LIBLIST section */
828 #define DT_MIPS_LOCAL_GOTNO 0x7000000a /* Number of local GOT entries */
829 #define DT_MIPS_CONFLICTNO 0x7000000b /* Number of CONFLICT entries */
830 #define DT_MIPS_LIBLISTNO 0x70000010 /* Number of LIBLIST entries */
831 #define DT_MIPS_SYMTABNO 0x70000011 /* Number of DYNSYM entries */
832 #define DT_MIPS_UNREFEXTNO 0x70000012 /* First external DYNSYM */
833 #define DT_MIPS_GOTSYM 0x70000013 /* First GOT entry in DYNSYM */
834 #define DT_MIPS_HIPAGENO 0x70000014 /* Number of GOT page table entries */
835 #define DT_MIPS_RLD_MAP 0x70000016 /* Address of run time loader map. */
836 #define DT_MIPS_NUM 0x17
838 /* Legal values for DT_MIPS_FLAG Elf32_Dyn entry. */
840 #define RHF_NONE 0 /* No flags */
841 #define RHF_QUICKSTART (1 << 0) /* Use quickstart */
842 #define RHF_NOTPOT (1 << 1) /* Hash size not power of 2 */
843 #define RHF_NO_LIBRARY_REPLACEMENT (1 << 2) /* Ignore LD_LIBRARY_PATH */
845 /* Entries found in sections of type SHT_MIPS_LIBLIST. */
847 typedef struct
849 Elf32_Word l_name; /* Name (string table index) */
850 Elf32_Word l_time_stamp; /* Timestamp */
851 Elf32_Word l_checksum; /* Checksum */
852 Elf32_Word l_version; /* Interface version */
853 Elf32_Word l_flags; /* Flags */
854 } Elf32_Lib;
856 /* Legal values for l_flags. */
858 #define LL_EXACT_MATCH (1 << 0) /* Require exact match */
859 #define LL_IGNORE_INT_VER (1 << 1) /* Ignore interface version */
861 /* Entries found in sections of type SHT_MIPS_CONFLICT. */
863 typedef Elf32_Addr Elf32_Conflict;
866 /* HPPA specific definitions. */
868 /* Legal values for sh_type field of Elf32_Shdr. */
870 #define SHT_PARISC_GOT 0x70000000 /* GOT for external data. */
871 #define SHT_PARISC_ARCH 0x70000001 /* Architecture extensions. */
872 #define SHT_PARISC_GLOBAL 0x70000002 /* Definition of $global$. */
873 #define SHT_PARISC_MILLI 0x70000003 /* Millicode routines. */
874 #define SHT_PARISC_UNWIND 0x70000004 /* Unwind information. */
875 #define SHT_PARISC_PLT 0x70000005 /* Procedure linkage table. */
876 #define SHT_PARISC_SDATA 0x70000006 /* Short initialized data. */
877 #define SHT_PARISC_SBSS 0x70000007 /* Short uninitialized data. */
878 #define SHT_PARISC_SYMEXTN 0x70000008 /* Argument/relocation info. */
879 #define SHT_PARISC_STUBS 0x70000009 /* Linker stubs. */
881 /* Legal values for sh_flags field of Elf32_Shdr. */
883 #define SHF_PARISC_SHORT 0x20000000 /* Section with short addressing. */
885 /* Legal values for ST_TYPE subfield of st_info (symbol type). */
887 #define STT_PARISC_MILLICODE 13 /* Millicode function entry point. */
890 /* Alpha specific declarations. */
892 /* Alpha relocs. */
894 #define R_ALPHA_NONE 0 /* No reloc */
895 #define R_ALPHA_REFLONG 1 /* Direct 32 bit */
896 #define R_ALPHA_REFQUAD 2 /* Direct 64 bit */
897 #define R_ALPHA_GPREL32 3 /* GP relative 32 bit */
898 #define R_ALPHA_LITERAL 4 /* GP relative 16 bit w/optimization */
899 #define R_ALPHA_LITUSE 5 /* Optimization hint for LITERAL */
900 #define R_ALPHA_GPDISP 6 /* Add displacement to GP */
901 #define R_ALPHA_BRADDR 7 /* PC+4 relative 23 bit shifted */
902 #define R_ALPHA_HINT 8 /* PC+4 relative 16 bit shifted */
903 #define R_ALPHA_SREL16 9 /* PC relative 16 bit */
904 #define R_ALPHA_SREL32 10 /* PC relative 32 bit */
905 #define R_ALPHA_SREL64 11 /* PC relative 64 bit */
906 #define R_ALPHA_OP_PUSH 12 /* OP stack push */
907 #define R_ALPHA_OP_STORE 13 /* OP stack pop and store */
908 #define R_ALPHA_OP_PSUB 14 /* OP stack subtract */
909 #define R_ALPHA_OP_PRSHIFT 15 /* OP stack right shift */
910 #define R_ALPHA_GPVALUE 16
911 #define R_ALPHA_GPRELHIGH 17
912 #define R_ALPHA_GPRELLOW 18
913 #define R_ALPHA_IMMED_GP_16 19
914 #define R_ALPHA_IMMED_GP_HI32 20
915 #define R_ALPHA_IMMED_SCN_HI32 21
916 #define R_ALPHA_IMMED_BR_HI32 22
917 #define R_ALPHA_IMMED_LO32 23
918 #define R_ALPHA_COPY 24 /* Copy symbol at runtime */
919 #define R_ALPHA_GLOB_DAT 25 /* Create GOT entry */
920 #define R_ALPHA_JMP_SLOT 26 /* Create PLT entry */
921 #define R_ALPHA_RELATIVE 27 /* Adjust by program base */
924 /* PowerPC specific declarations */
926 /* PowerPC relocations defined by the ABIs */
927 #define R_PPC_NONE 0
928 #define R_PPC_ADDR32 1
929 #define R_PPC_ADDR24 2
930 #define R_PPC_ADDR16 3
931 #define R_PPC_ADDR16_LO 4
932 #define R_PPC_ADDR16_HI 5
933 #define R_PPC_ADDR16_HA 6
934 #define R_PPC_ADDR14 7
935 #define R_PPC_ADDR14_BRTAKEN 8
936 #define R_PPC_ADDR14_BRNTAKEN 9
937 #define R_PPC_REL24 10
938 #define R_PPC_REL14 11
939 #define R_PPC_REL14_BRTAKEN 12
940 #define R_PPC_REL14_BRNTAKEN 13
941 #define R_PPC_GOT16 14
942 #define R_PPC_GOT16_LO 15
943 #define R_PPC_GOT16_HI 16
944 #define R_PPC_GOT16_HA 17
945 #define R_PPC_PLTREL24 18
946 #define R_PPC_COPY 19
947 #define R_PPC_GLOB_DAT 20
948 #define R_PPC_JMP_SLOT 21
949 #define R_PPC_RELATIVE 22
950 #define R_PPC_LOCAL24PC 23
951 #define R_PPC_UADDR32 24
952 #define R_PPC_UADDR16 25
953 #define R_PPC_REL32 26
954 #define R_PPC_PLT32 27
955 #define R_PPC_PLTREL32 28
956 #define R_PPC_PLT16_LO 29
957 #define R_PPC_PLT16_HI 30
958 #define R_PPC_PLT16_HA 31
959 #define R_PPC_SDAREL16 32
960 #define R_PPC_SECTOFF 33
961 #define R_PPC_SECTOFF_LO 34
962 #define R_PPC_SECTOFF_HI 35
963 #define R_PPC_SECTOFF_HA 36
965 /* The remaining relocs are from the Embedded ELF ABI, and are not
966 in the SVR4 ELF ABI. */
967 #define R_PPC_EMB_NADDR32 101
968 #define R_PPC_EMB_NADDR16 102
969 #define R_PPC_EMB_NADDR16_LO 103
970 #define R_PPC_EMB_NADDR16_HI 104
971 #define R_PPC_EMB_NADDR16_HA 105
972 #define R_PPC_EMB_SDAI16 106
973 #define R_PPC_EMB_SDA2I16 107
974 #define R_PPC_EMB_SDA2REL 108
975 #define R_PPC_EMB_SDA21 109
976 #define R_PPC_EMB_MRKREF 110
977 #define R_PPC_EMB_RELSEC16 111
978 #define R_PPC_EMB_RELST_LO 112
979 #define R_PPC_EMB_RELST_HI 113
980 #define R_PPC_EMB_RELST_HA 114
981 #define R_PPC_EMB_BIT_FLD 115
982 #define R_PPC_EMB_RELSDA 116
984 /* This is a phony reloc to handle any old fashioned TOC16 references
985 that may still be in object files. */
986 #define R_PPC_TOC16 255
988 __END_DECLS
990 #endif /* elf.h */