1 #ifndef _LINUX_ELF_H
2 #define _LINUX_ELF_H
3
4 #include <linux/types.h>
5 #include <asm/elf.h>
6
7 /* 32-bit ELF base types. */
8 typedef __u32 Elf32_Addr;
9 typedef __u16 Elf32_Half;
10 typedef __u32 Elf32_Off;
11 typedef __s32 Elf32_Sword;
12 typedef __u32 Elf32_Word;
13
14 /* 64-bit ELF base types. */
15 typedef __u64 Elf64_Addr;
16 typedef __u16 Elf64_Half;
17 typedef __s16 Elf64_SHalf;
18 typedef __u64 Elf64_Off;
19 typedef __s64 Elf64_Sword;
20 typedef __u64 Elf64_Word;
21
22 /* These constants are for the segment types stored in the image headers */
23 #define PT_NULL 0
24 #define PT_LOAD 1
25 #define PT_DYNAMIC 2
26 #define PT_INTERP 3
27 #define PT_NOTE 4
28 #define PT_SHLIB 5
29 #define PT_PHDR 6
30 #define PT_LOPROC 0x70000000
31 #define PT_HIPROC 0x7fffffff
32 #define PT_MIPS_REGINFO 0x70000000
33
34 /* Flags in the e_flags field of the header */
35 #define EF_MIPS_NOREORDER 0x00000001
36 #define EF_MIPS_PIC 0x00000002
37 #define EF_MIPS_CPIC 0x00000004
38 #define EF_MIPS_ARCH 0xf0000000
39
40 /* These constants define the different elf file types */
41 #define ET_NONE 0
42 #define ET_REL 1
43 #define ET_EXEC 2
44 #define ET_DYN 3
45 #define ET_CORE 4
46 #define ET_LOPROC 0xff00
47 #define ET_HIPROC 0xffff
48
49 /* These constants define the various ELF target machines */
50 #define EM_NONE 0
51 #define EM_M32 1
52 #define EM_SPARC 2
53 #define EM_386 3
54 #define EM_68K 4
55 #define EM_88K 5
56 #define EM_486 6 /* Perhaps disused */
57 #define EM_860 7
58
59 #define EM_MIPS 8 /* MIPS R3000 (officially, big-endian only) */
60
61 #define EM_MIPS_RS4_BE 10 /* MIPS R4000 big-endian */
62
63 #define EM_PARISC 15 /* HPPA */
64
65 #define EM_SPARC32PLUS 18 /* Sun's "v8plus" */
66
67 #define EM_PPC 20 /* PowerPC */
68
69 #define EM_SH 42 /* SuperH */
70
71 #define EM_SPARCV9 43 /* SPARC v9 64-bit */
72
73 #define EM_IA_64 50 /* HP/Intel IA-64 */
74
75 #define EM_X8664 62 /* AMD x86-64 */
76
77 /*
78 * This is an interim value that we will use until the committee comes
79 * up with a final number.
80 */
81 #define EM_ALPHA 0x9026
82
83 /*
84 * This is an interim value for S390 architecture
85 */
86 #define EM_S390 0xA390
87
88 /* This is the info that is needed to parse the dynamic section of the file */
89 #define DT_NULL 0
90 #define DT_NEEDED 1
91 #define DT_PLTRELSZ 2
92 #define DT_PLTGOT 3
93 #define DT_HASH 4
94 #define DT_STRTAB 5
95 #define DT_SYMTAB 6
96 #define DT_RELA 7
97 #define DT_RELASZ 8
98 #define DT_RELAENT 9
99 #define DT_STRSZ 10
100 #define DT_SYMENT 11
101 #define DT_INIT 12
102 #define DT_FINI 13
103 #define DT_SONAME 14
104 #define DT_RPATH 15
105 #define DT_SYMBOLIC 16
106 #define DT_REL 17
107 #define DT_RELSZ 18
108 #define DT_RELENT 19
109 #define DT_PLTREL 20
110 #define DT_DEBUG 21
111 #define DT_TEXTREL 22
112 #define DT_JMPREL 23
113 #define DT_LOPROC 0x70000000
114 #define DT_HIPROC 0x7fffffff
115 #define DT_MIPS_RLD_VERSION 0x70000001
116 #define DT_MIPS_TIME_STAMP 0x70000002
117 #define DT_MIPS_ICHECKSUM 0x70000003
118 #define DT_MIPS_IVERSION 0x70000004
119 #define DT_MIPS_FLAGS 0x70000005
120 #define RHF_NONE 0
121 #define RHF_HARDWAY 1
122 #define RHF_NOTPOT 2
123 #define DT_MIPS_BASE_ADDRESS 0x70000006
124 #define DT_MIPS_CONFLICT 0x70000008
125 #define DT_MIPS_LIBLIST 0x70000009
126 #define DT_MIPS_LOCAL_GOTNO 0x7000000a
127 #define DT_MIPS_CONFLICTNO 0x7000000b
128 #define DT_MIPS_LIBLISTNO 0x70000010
129 #define DT_MIPS_SYMTABNO 0x70000011
130 #define DT_MIPS_UNREFEXTNO 0x70000012
131 #define DT_MIPS_GOTSYM 0x70000013
132 #define DT_MIPS_HIPAGENO 0x70000014
133 #define DT_MIPS_RLD_MAP 0x70000016
134
135 /* This info is needed when parsing the symbol table */
136 #define STB_LOCAL 0
137 #define STB_GLOBAL 1
138 #define STB_WEAK 2
139
140 #define STT_NOTYPE 0
141 #define STT_OBJECT 1
142 #define STT_FUNC 2
143 #define STT_SECTION 3
144 #define STT_FILE 4
145
146 #define ELF32_ST_BIND(x) ((x) >> 4)
147 #define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf)
148
149 /* Symbolic values for the entries in the auxiliary table
150 put on the initial stack */
151 #define AT_NULL 0 /* end of vector */
152 #define AT_IGNORE 1 /* entry should be ignored */
153 #define AT_EXECFD 2 /* file descriptor of program */
154 #define AT_PHDR 3 /* program headers for program */
155 #define AT_PHENT 4 /* size of program header entry */
156 #define AT_PHNUM 5 /* number of program headers */
157 #define AT_PAGESZ 6 /* system page size */
158 #define AT_BASE 7 /* base address of interpreter */
159 #define AT_FLAGS 8 /* flags */
160 #define AT_ENTRY 9 /* entry point of program */
161 #define AT_NOTELF 10 /* program is not ELF */
162 #define AT_UID 11 /* real uid */
163 #define AT_EUID 12 /* effective uid */
164 #define AT_GID 13 /* real gid */
165 #define AT_EGID 14 /* effective gid */
166 #define AT_PLATFORM 15 /* string identifying CPU for optimizations */
167 #define AT_HWCAP 16 /* arch dependent hints at CPU capabilities */
168 #define AT_CLKTCK 17 /* frequency at which times() increments */
169
170 typedef struct dynamic{
171 Elf32_Sword d_tag;
172 union{
173 Elf32_Sword d_val;
174 Elf32_Addr d_ptr;
175 } d_un;
176 } Elf32_Dyn;
177
178 typedef struct {
179 Elf64_Word d_tag; /* entry tag value */
180 union {
181 Elf64_Word d_val;
182 Elf64_Word d_ptr;
183 } d_un;
184 } Elf64_Dyn;
185
186 /* The following are used with relocations */
187 #define ELF32_R_SYM(x) ((x) >> 8)
188 #define ELF32_R_TYPE(x) ((x) & 0xff)
189
190 #define R_386_NONE 0
191 #define R_386_32 1
192 #define R_386_PC32 2
193 #define R_386_GOT32 3
194 #define R_386_PLT32 4
195 #define R_386_COPY 5
196 #define R_386_GLOB_DAT 6
197 #define R_386_JMP_SLOT 7
198 #define R_386_RELATIVE 8
199 #define R_386_GOTOFF 9
200 #define R_386_GOTPC 10
201 #define R_386_NUM 11
202
203 #define R_MIPS_NONE 0
204 #define R_MIPS_16 1
205 #define R_MIPS_32 2
206 #define R_MIPS_REL32 3
207 #define R_MIPS_26 4
208 #define R_MIPS_HI16 5
209 #define R_MIPS_LO16 6
210 #define R_MIPS_GPREL16 7
211 #define R_MIPS_LITERAL 8
212 #define R_MIPS_GOT16 9
213 #define R_MIPS_PC16 10
214 #define R_MIPS_CALL16 11
215 #define R_MIPS_GPREL32 12
216 /* The remaining relocs are defined on Irix, although they are not
217 in the MIPS ELF ABI. */
218 #define R_MIPS_UNUSED1 13
219 #define R_MIPS_UNUSED2 14
220 #define R_MIPS_UNUSED3 15
221 #define R_MIPS_SHIFT5 16
222 #define R_MIPS_SHIFT6 17
223 #define R_MIPS_64 18
224 #define R_MIPS_GOT_DISP 19
225 #define R_MIPS_GOT_PAGE 20
226 #define R_MIPS_GOT_OFST 21
227 /*
228 * The following two relocation types are specified in the the MIPS ABI
229 * conformance guide version 1.2 but not yet in the psABI.
230 */
231 #define R_MIPS_GOTHI16 22
232 #define R_MIPS_GOTLO16 23
233 #define R_MIPS_SUB 24
234 #define R_MIPS_INSERT_A 25
235 #define R_MIPS_INSERT_B 26
236 #define R_MIPS_DELETE 27
237 #define R_MIPS_HIGHER 28
238 #define R_MIPS_HIGHEST 29
239 /*
240 * The following two relocation types are specified in the the MIPS ABI
241 * conformance guide version 1.2 but not yet in the psABI.
242 */
243 #define R_MIPS_CALLHI16 30
244 #define R_MIPS_CALLLO16 31
245 /*
246 * This range is reserved for vendor specific relocations.
247 */
248 #define R_MIPS_LOVENDOR 100
249 #define R_MIPS_HIVENDOR 127
250
251
252 /*
253 * Sparc ELF relocation types
254 */
255 #define R_SPARC_NONE 0
256 #define R_SPARC_8 1
257 #define R_SPARC_16 2
258 #define R_SPARC_32 3
259 #define R_SPARC_DISP8 4
260 #define R_SPARC_DISP16 5
261 #define R_SPARC_DISP32 6
262 #define R_SPARC_WDISP30 7
263 #define R_SPARC_WDISP22 8
264 #define R_SPARC_HI22 9
265 #define R_SPARC_22 10
266 #define R_SPARC_13 11
267 #define R_SPARC_LO10 12
268 #define R_SPARC_GOT10 13
269 #define R_SPARC_GOT13 14
270 #define R_SPARC_GOT22 15
271 #define R_SPARC_PC10 16
272 #define R_SPARC_PC22 17
273 #define R_SPARC_WPLT30 18
274 #define R_SPARC_COPY 19
275 #define R_SPARC_GLOB_DAT 20
276 #define R_SPARC_JMP_SLOT 21
277 #define R_SPARC_RELATIVE 22
278 #define R_SPARC_UA32 23
279 #define R_SPARC_PLT32 24
280 #define R_SPARC_HIPLT22 25
281 #define R_SPARC_LOPLT10 26
282 #define R_SPARC_PCPLT32 27
283 #define R_SPARC_PCPLT22 28
284 #define R_SPARC_PCPLT10 29
285 #define R_SPARC_10 30
286 #define R_SPARC_11 31
287 #define R_SPARC_WDISP16 40
288 #define R_SPARC_WDISP19 41
289 #define R_SPARC_7 43
290 #define R_SPARC_5 44
291 #define R_SPARC_6 45
292
293 /* Bits present in AT_HWCAP, primarily for Sparc32. */
294
295 #define HWCAP_SPARC_FLUSH 1 /* CPU supports flush instruction. */
296 #define HWCAP_SPARC_STBAR 2
297 #define HWCAP_SPARC_SWAP 4
298 #define HWCAP_SPARC_MULDIV 8
299 #define HWCAP_SPARC_V9 16
300
301
302 /*
303 * 68k ELF relocation types
304 */
305 #define R_68K_NONE 0
306 #define R_68K_32 1
307 #define R_68K_16 2
308 #define R_68K_8 3
309 #define R_68K_PC32 4
310 #define R_68K_PC16 5
311 #define R_68K_PC8 6
312 #define R_68K_GOT32 7
313 #define R_68K_GOT16 8
314 #define R_68K_GOT8 9
315 #define R_68K_GOT32O 10
316 #define R_68K_GOT16O 11
317 #define R_68K_GOT8O 12
318 #define R_68K_PLT32 13
319 #define R_68K_PLT16 14
320 #define R_68K_PLT8 15
321 #define R_68K_PLT32O 16
322 #define R_68K_PLT16O 17
323 #define R_68K_PLT8O 18
324 #define R_68K_COPY 19
325 #define R_68K_GLOB_DAT 20
326 #define R_68K_JMP_SLOT 21
327 #define R_68K_RELATIVE 22
328
329 /*
330 * Alpha ELF relocation types
331 */
332 #define R_ALPHA_NONE 0 /* No reloc */
333 #define R_ALPHA_REFLONG 1 /* Direct 32 bit */
334 #define R_ALPHA_REFQUAD 2 /* Direct 64 bit */
335 #define R_ALPHA_GPREL32 3 /* GP relative 32 bit */
336 #define R_ALPHA_LITERAL 4 /* GP relative 16 bit w/optimization */
337 #define R_ALPHA_LITUSE 5 /* Optimization hint for LITERAL */
338 #define R_ALPHA_GPDISP 6 /* Add displacement to GP */
339 #define R_ALPHA_BRADDR 7 /* PC+4 relative 23 bit shifted */
340 #define R_ALPHA_HINT 8 /* PC+4 relative 16 bit shifted */
341 #define R_ALPHA_SREL16 9 /* PC relative 16 bit */
342 #define R_ALPHA_SREL32 10 /* PC relative 32 bit */
343 #define R_ALPHA_SREL64 11 /* PC relative 64 bit */
344 #define R_ALPHA_OP_PUSH 12 /* OP stack push */
345 #define R_ALPHA_OP_STORE 13 /* OP stack pop and store */
346 #define R_ALPHA_OP_PSUB 14 /* OP stack subtract */
347 #define R_ALPHA_OP_PRSHIFT 15 /* OP stack right shift */
348 #define R_ALPHA_GPVALUE 16
349 #define R_ALPHA_GPRELHIGH 17
350 #define R_ALPHA_GPRELLOW 18
351 #define R_ALPHA_IMMED_GP_16 19
352 #define R_ALPHA_IMMED_GP_HI32 20
353 #define R_ALPHA_IMMED_SCN_HI32 21
354 #define R_ALPHA_IMMED_BR_HI32 22
355 #define R_ALPHA_IMMED_LO32 23
356 #define R_ALPHA_COPY 24 /* Copy symbol at runtime */
357 #define R_ALPHA_GLOB_DAT 25 /* Create GOT entry */
358 #define R_ALPHA_JMP_SLOT 26 /* Create PLT entry */
359 #define R_ALPHA_RELATIVE 27 /* Adjust by program base */
360
361 /* Legal values for e_flags field of Elf64_Ehdr. */
362
363 #define EF_ALPHA_32BIT 1 /* All addresses are below 2GB */
364
365
366 typedef struct elf32_rel {
367 Elf32_Addr r_offset;
368 Elf32_Word r_info;
369 } Elf32_Rel;
370
371 typedef struct elf64_rel {
372 Elf64_Addr r_offset; /* Location at which to apply the action */
373 Elf64_Word r_info; /* index and type of relocation */
374 } Elf64_Rel;
375
376 typedef struct elf32_rela{
377 Elf32_Addr r_offset;
378 Elf32_Word r_info;
379 Elf32_Sword r_addend;
380 } Elf32_Rela;
381
382 typedef struct elf64_rela {
383 Elf64_Addr r_offset; /* Location at which to apply the action */
384 Elf64_Word r_info; /* index and type of relocation */
385 Elf64_Word r_addend; /* Constant addend used to compute value */
386 } Elf64_Rela;
387
388 typedef struct elf32_sym{
389 Elf32_Word st_name;
390 Elf32_Addr st_value;
391 Elf32_Word st_size;
392 unsigned char st_info;
393 unsigned char st_other;
394 Elf32_Half st_shndx;
395 } Elf32_Sym;
396
397 typedef struct elf64_sym {
398 Elf32_Word st_name; /* Symbol name, index in string tbl (yes, Elf32) */
399 unsigned char st_info; /* Type and binding attributes */
400 unsigned char st_other; /* No defined meaning, 0 */
401 Elf64_Half st_shndx; /* Associated section index */
402 Elf64_Addr st_value; /* Value of the symbol */
403 Elf64_Word st_size; /* Associated symbol size */
404 } Elf64_Sym;
405
406
407 #define EI_NIDENT 16
408
409 typedef struct elf32_hdr{
410 unsigned char e_ident[EI_NIDENT];
411 Elf32_Half e_type;
412 Elf32_Half e_machine;
413 Elf32_Word e_version;
414 Elf32_Addr e_entry; /* Entry point */
415 Elf32_Off e_phoff;
416 Elf32_Off e_shoff;
417 Elf32_Word e_flags;
418 Elf32_Half e_ehsize;
419 Elf32_Half e_phentsize;
420 Elf32_Half e_phnum;
421 Elf32_Half e_shentsize;
422 Elf32_Half e_shnum;
423 Elf32_Half e_shstrndx;
424 } Elf32_Ehdr;
425
426 typedef struct elf64_hdr {
427 unsigned char e_ident[16]; /* ELF "magic number" */
428 Elf64_SHalf e_type;
429 Elf64_Half e_machine;
430 __s32 e_version;
431 Elf64_Addr e_entry; /* Entry point virtual address */
432 Elf64_Off e_phoff; /* Program header table file offset */
433 Elf64_Off e_shoff; /* Section header table file offset */
434 __s32 e_flags;
435 Elf64_SHalf e_ehsize;
436 Elf64_SHalf e_phentsize;
437 Elf64_SHalf e_phnum;
438 Elf64_SHalf e_shentsize;
439 Elf64_SHalf e_shnum;
440 Elf64_SHalf e_shstrndx;
441 } Elf64_Ehdr;
442
443 /* These constants define the permissions on sections in the program
444 header, p_flags. */
445 #define PF_R 0x4
446 #define PF_W 0x2
447 #define PF_X 0x1
448
449 typedef struct elf32_phdr{
450 Elf32_Word p_type;
451 Elf32_Off p_offset;
452 Elf32_Addr p_vaddr;
453 Elf32_Addr p_paddr;
454 Elf32_Word p_filesz;
455 Elf32_Word p_memsz;
456 Elf32_Word p_flags;
457 Elf32_Word p_align;
458 } Elf32_Phdr;
459
460 typedef struct elf64_phdr {
461 __s32 p_type;
462 __s32 p_flags;
463 Elf64_Off p_offset; /* Segment file offset */
464 Elf64_Addr p_vaddr; /* Segment virtual address */
465 Elf64_Addr p_paddr; /* Segment physical address */
466 Elf64_Word p_filesz; /* Segment size in file */
467 Elf64_Word p_memsz; /* Segment size in memory */
468 Elf64_Word p_align; /* Segment alignment, file & memory */
469 } Elf64_Phdr;
470
471 /* sh_type */
472 #define SHT_NULL 0
473 #define SHT_PROGBITS 1
474 #define SHT_SYMTAB 2
475 #define SHT_STRTAB 3
476 #define SHT_RELA 4
477 #define SHT_HASH 5
478 #define SHT_DYNAMIC 6
479 #define SHT_NOTE 7
480 #define SHT_NOBITS 8
481 #define SHT_REL 9
482 #define SHT_SHLIB 10
483 #define SHT_DYNSYM 11
484 #define SHT_NUM 12
485 #define SHT_LOPROC 0x70000000
486 #define SHT_HIPROC 0x7fffffff
487 #define SHT_LOUSER 0x80000000
488 #define SHT_HIUSER 0xffffffff
489 #define SHT_MIPS_LIST 0x70000000
490 #define SHT_MIPS_CONFLICT 0x70000002
491 #define SHT_MIPS_GPTAB 0x70000003
492 #define SHT_MIPS_UCODE 0x70000004
493
494 /* sh_flags */
495 #define SHF_WRITE 0x1
496 #define SHF_ALLOC 0x2
497 #define SHF_EXECINSTR 0x4
498 #define SHF_MASKPROC 0xf0000000
499 #define SHF_MIPS_GPREL 0x10000000
500
501 /* special section indexes */
502 #define SHN_UNDEF 0
503 #define SHN_LORESERVE 0xff00
504 #define SHN_LOPROC 0xff00
505 #define SHN_HIPROC 0xff1f
506 #define SHN_ABS 0xfff1
507 #define SHN_COMMON 0xfff2
508 #define SHN_HIRESERVE 0xffff
509 #define SHN_MIPS_ACCOMON 0xff00
510
511 typedef struct {
512 Elf32_Word sh_name;
513 Elf32_Word sh_type;
514 Elf32_Word sh_flags;
515 Elf32_Addr sh_addr;
516 Elf32_Off sh_offset;
517 Elf32_Word sh_size;
518 Elf32_Word sh_link;
519 Elf32_Word sh_info;
520 Elf32_Word sh_addralign;
521 Elf32_Word sh_entsize;
522 } Elf32_Shdr;
523
524 typedef struct elf64_shdr {
525 Elf32_Word sh_name; /* Section name, index in string tbl (yes Elf32) */
526 Elf32_Word sh_type; /* Type of section (yes Elf32) */
527 Elf64_Word sh_flags; /* Miscellaneous section attributes */
528 Elf64_Addr sh_addr; /* Section virtual addr at execution */
529 Elf64_Off sh_offset; /* Section file offset */
530 Elf64_Word sh_size; /* Size of section in bytes */
531 Elf32_Word sh_link; /* Index of another section (yes Elf32) */
532 Elf32_Word sh_info; /* Additional section information (yes Elf32) */
533 Elf64_Word sh_addralign; /* Section alignment */
534 Elf64_Word sh_entsize; /* Entry size if section holds table */
535 } Elf64_Shdr;
536
537 #define EI_MAG0 0 /* e_ident[] indexes */
538 #define EI_MAG1 1
539 #define EI_MAG2 2
540 #define EI_MAG3 3
541 #define EI_CLASS 4
542 #define EI_DATA 5
543 #define EI_VERSION 6
544 #define EI_PAD 7
545
546 #define ELFMAG0 0x7f /* EI_MAG */
547 #define ELFMAG1 'E'
548 #define ELFMAG2 'L'
549 #define ELFMAG3 'F'
550 #define ELFMAG "\177ELF"
551 #define SELFMAG 4
552
553 #define ELFCLASSNONE 0 /* EI_CLASS */
554 #define ELFCLASS32 1
555 #define ELFCLASS64 2
556 #define ELFCLASSNUM 3
557
558 #define ELFDATANONE 0 /* e_ident[EI_DATA] */
559 #define ELFDATA2LSB 1
560 #define ELFDATA2MSB 2
561
562 #define EV_NONE 0 /* e_version, EI_VERSION */
563 #define EV_CURRENT 1
564 #define EV_NUM 2
565
566 /* Notes used in ET_CORE */
567 #define NT_PRSTATUS 1
568 #define NT_PRFPREG 2
569 #define NT_PRPSINFO 3
570 #define NT_TASKSTRUCT 4
571 #define NT_PRFPXREG 20
572
573 /* Note header in a PT_NOTE section */
574 typedef struct elf32_note {
575 Elf32_Word n_namesz; /* Name size */
576 Elf32_Word n_descsz; /* Content size */
577 Elf32_Word n_type; /* Content type */
578 } Elf32_Nhdr;
579
580 /* Note header in a PT_NOTE section */
581 /*
582 * For now we use the 32 bit version of the structure until we figure
583 * out whether we need anything better. Note - on the Alpha, "unsigned int"
584 * is only 32 bits.
585 */
586 typedef struct elf64_note {
587 Elf32_Word n_namesz; /* Name size */
588 Elf32_Word n_descsz; /* Content size */
589 Elf32_Word n_type; /* Content type */
590 } Elf64_Nhdr;
591
592 #if ELF_CLASS == ELFCLASS32
593
594 extern Elf32_Dyn _DYNAMIC [];
595 #define elfhdr elf32_hdr
596 #define elf_phdr elf32_phdr
597 #define elf_note elf32_note
598
599 #else
600
601 extern Elf64_Dyn _DYNAMIC [];
602 #define elfhdr elf64_hdr
603 #define elf_phdr elf64_phdr
604 #define elf_note elf64_note
605
606 #endif
607
608
609 #endif /* _LINUX_ELF_H */
610
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