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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _LINUX_ELF_H
2#define _LINUX_ELF_H
3
4#include <linux/types.h>
H. J. Lu36d57ac2005-09-06 15:16:49 -07005#include <linux/auxvec.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07006#include <asm/elf.h>
7
8#ifndef elf_read_implies_exec
9 /* Executables for which elf_read_implies_exec() returns TRUE will
10 have the READ_IMPLIES_EXEC personality flag set automatically.
11 Override in asm/elf.h as needed. */
12# define elf_read_implies_exec(ex, have_pt_gnu_stack) 0
13#endif
14
15/* 32-bit ELF base types. */
16typedef __u32 Elf32_Addr;
17typedef __u16 Elf32_Half;
18typedef __u32 Elf32_Off;
19typedef __s32 Elf32_Sword;
20typedef __u32 Elf32_Word;
21
22/* 64-bit ELF base types. */
23typedef __u64 Elf64_Addr;
24typedef __u16 Elf64_Half;
25typedef __s16 Elf64_SHalf;
26typedef __u64 Elf64_Off;
27typedef __s32 Elf64_Sword;
28typedef __u32 Elf64_Word;
29typedef __u64 Elf64_Xword;
30typedef __s64 Elf64_Sxword;
31
32/* These constants are for the segment types stored in the image headers */
33#define PT_NULL 0
34#define PT_LOAD 1
35#define PT_DYNAMIC 2
36#define PT_INTERP 3
37#define PT_NOTE 4
38#define PT_SHLIB 5
39#define PT_PHDR 6
40#define PT_TLS 7 /* Thread local storage segment */
41#define PT_LOOS 0x60000000 /* OS-specific */
42#define PT_HIOS 0x6fffffff /* OS-specific */
43#define PT_LOPROC 0x70000000
44#define PT_HIPROC 0x7fffffff
45#define PT_GNU_EH_FRAME 0x6474e550
46
47#define PT_GNU_STACK (PT_LOOS + 0x474e551)
48
49/* These constants define the different elf file types */
50#define ET_NONE 0
51#define ET_REL 1
52#define ET_EXEC 2
53#define ET_DYN 3
54#define ET_CORE 4
55#define ET_LOPROC 0xff00
56#define ET_HIPROC 0xffff
57
58/* These constants define the various ELF target machines */
59#define EM_NONE 0
60#define EM_M32 1
61#define EM_SPARC 2
62#define EM_386 3
63#define EM_68K 4
64#define EM_88K 5
65#define EM_486 6 /* Perhaps disused */
66#define EM_860 7
67
68#define EM_MIPS 8 /* MIPS R3000 (officially, big-endian only) */
69
70#define EM_MIPS_RS4_BE 10 /* MIPS R4000 big-endian */
71
72#define EM_PARISC 15 /* HPPA */
73
74#define EM_SPARC32PLUS 18 /* Sun's "v8plus" */
75
76#define EM_PPC 20 /* PowerPC */
77#define EM_PPC64 21 /* PowerPC64 */
78
79#define EM_SH 42 /* SuperH */
80
81#define EM_SPARCV9 43 /* SPARC v9 64-bit */
82
83#define EM_IA_64 50 /* HP/Intel IA-64 */
84
85#define EM_X86_64 62 /* AMD x86-64 */
86
87#define EM_S390 22 /* IBM S/390 */
88
89#define EM_CRIS 76 /* Axis Communications 32-bit embedded processor */
90
91#define EM_V850 87 /* NEC v850 */
92
93#define EM_M32R 88 /* Renesas M32R */
94
95#define EM_H8_300 46 /* Renesas H8/300,300H,H8S */
96
97/*
98 * This is an interim value that we will use until the committee comes
99 * up with a final number.
100 */
101#define EM_ALPHA 0x9026
102
103/* Bogus old v850 magic number, used by old tools. */
104#define EM_CYGNUS_V850 0x9080
105
106/* Bogus old m32r magic number, used by old tools. */
107#define EM_CYGNUS_M32R 0x9041
108
109/*
110 * This is the old interim value for S/390 architecture
111 */
112#define EM_S390_OLD 0xA390
113
114#define EM_FRV 0x5441 /* Fujitsu FR-V */
115
116/* This is the info that is needed to parse the dynamic section of the file */
117#define DT_NULL 0
118#define DT_NEEDED 1
119#define DT_PLTRELSZ 2
120#define DT_PLTGOT 3
121#define DT_HASH 4
122#define DT_STRTAB 5
123#define DT_SYMTAB 6
124#define DT_RELA 7
125#define DT_RELASZ 8
126#define DT_RELAENT 9
127#define DT_STRSZ 10
128#define DT_SYMENT 11
129#define DT_INIT 12
130#define DT_FINI 13
131#define DT_SONAME 14
132#define DT_RPATH 15
133#define DT_SYMBOLIC 16
134#define DT_REL 17
135#define DT_RELSZ 18
136#define DT_RELENT 19
137#define DT_PLTREL 20
138#define DT_DEBUG 21
139#define DT_TEXTREL 22
140#define DT_JMPREL 23
141#define DT_LOPROC 0x70000000
142#define DT_HIPROC 0x7fffffff
143
144/* This info is needed when parsing the symbol table */
145#define STB_LOCAL 0
146#define STB_GLOBAL 1
147#define STB_WEAK 2
148
149#define STT_NOTYPE 0
150#define STT_OBJECT 1
151#define STT_FUNC 2
152#define STT_SECTION 3
153#define STT_FILE 4
154
155#define ELF_ST_BIND(x) ((x) >> 4)
156#define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf)
157#define ELF32_ST_BIND(x) ELF_ST_BIND(x)
158#define ELF32_ST_TYPE(x) ELF_ST_TYPE(x)
159#define ELF64_ST_BIND(x) ELF_ST_BIND(x)
160#define ELF64_ST_TYPE(x) ELF_ST_TYPE(x)
161
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162typedef struct dynamic{
163 Elf32_Sword d_tag;
164 union{
165 Elf32_Sword d_val;
166 Elf32_Addr d_ptr;
167 } d_un;
168} Elf32_Dyn;
169
170typedef struct {
171 Elf64_Sxword d_tag; /* entry tag value */
172 union {
173 Elf64_Xword d_val;
174 Elf64_Addr d_ptr;
175 } d_un;
176} Elf64_Dyn;
177
178/* The following are used with relocations */
179#define ELF32_R_SYM(x) ((x) >> 8)
180#define ELF32_R_TYPE(x) ((x) & 0xff)
181
182#define ELF64_R_SYM(i) ((i) >> 32)
183#define ELF64_R_TYPE(i) ((i) & 0xffffffff)
184
185typedef struct elf32_rel {
186 Elf32_Addr r_offset;
187 Elf32_Word r_info;
188} Elf32_Rel;
189
190typedef struct elf64_rel {
191 Elf64_Addr r_offset; /* Location at which to apply the action */
192 Elf64_Xword r_info; /* index and type of relocation */
193} Elf64_Rel;
194
195typedef struct elf32_rela{
196 Elf32_Addr r_offset;
197 Elf32_Word r_info;
198 Elf32_Sword r_addend;
199} Elf32_Rela;
200
201typedef struct elf64_rela {
202 Elf64_Addr r_offset; /* Location at which to apply the action */
203 Elf64_Xword r_info; /* index and type of relocation */
204 Elf64_Sxword r_addend; /* Constant addend used to compute value */
205} Elf64_Rela;
206
207typedef struct elf32_sym{
208 Elf32_Word st_name;
209 Elf32_Addr st_value;
210 Elf32_Word st_size;
211 unsigned char st_info;
212 unsigned char st_other;
213 Elf32_Half st_shndx;
214} Elf32_Sym;
215
216typedef struct elf64_sym {
217 Elf64_Word st_name; /* Symbol name, index in string tbl */
218 unsigned char st_info; /* Type and binding attributes */
219 unsigned char st_other; /* No defined meaning, 0 */
220 Elf64_Half st_shndx; /* Associated section index */
221 Elf64_Addr st_value; /* Value of the symbol */
222 Elf64_Xword st_size; /* Associated symbol size */
223} Elf64_Sym;
224
225
226#define EI_NIDENT 16
227
228typedef struct elf32_hdr{
229 unsigned char e_ident[EI_NIDENT];
230 Elf32_Half e_type;
231 Elf32_Half e_machine;
232 Elf32_Word e_version;
233 Elf32_Addr e_entry; /* Entry point */
234 Elf32_Off e_phoff;
235 Elf32_Off e_shoff;
236 Elf32_Word e_flags;
237 Elf32_Half e_ehsize;
238 Elf32_Half e_phentsize;
239 Elf32_Half e_phnum;
240 Elf32_Half e_shentsize;
241 Elf32_Half e_shnum;
242 Elf32_Half e_shstrndx;
243} Elf32_Ehdr;
244
245typedef struct elf64_hdr {
246 unsigned char e_ident[16]; /* ELF "magic number" */
247 Elf64_Half e_type;
248 Elf64_Half e_machine;
249 Elf64_Word e_version;
250 Elf64_Addr e_entry; /* Entry point virtual address */
251 Elf64_Off e_phoff; /* Program header table file offset */
252 Elf64_Off e_shoff; /* Section header table file offset */
253 Elf64_Word e_flags;
254 Elf64_Half e_ehsize;
255 Elf64_Half e_phentsize;
256 Elf64_Half e_phnum;
257 Elf64_Half e_shentsize;
258 Elf64_Half e_shnum;
259 Elf64_Half e_shstrndx;
260} Elf64_Ehdr;
261
262/* These constants define the permissions on sections in the program
263 header, p_flags. */
264#define PF_R 0x4
265#define PF_W 0x2
266#define PF_X 0x1
267
268typedef struct elf32_phdr{
269 Elf32_Word p_type;
270 Elf32_Off p_offset;
271 Elf32_Addr p_vaddr;
272 Elf32_Addr p_paddr;
273 Elf32_Word p_filesz;
274 Elf32_Word p_memsz;
275 Elf32_Word p_flags;
276 Elf32_Word p_align;
277} Elf32_Phdr;
278
279typedef struct elf64_phdr {
280 Elf64_Word p_type;
281 Elf64_Word p_flags;
282 Elf64_Off p_offset; /* Segment file offset */
283 Elf64_Addr p_vaddr; /* Segment virtual address */
284 Elf64_Addr p_paddr; /* Segment physical address */
285 Elf64_Xword p_filesz; /* Segment size in file */
286 Elf64_Xword p_memsz; /* Segment size in memory */
287 Elf64_Xword p_align; /* Segment alignment, file & memory */
288} Elf64_Phdr;
289
290/* sh_type */
291#define SHT_NULL 0
292#define SHT_PROGBITS 1
293#define SHT_SYMTAB 2
294#define SHT_STRTAB 3
295#define SHT_RELA 4
296#define SHT_HASH 5
297#define SHT_DYNAMIC 6
298#define SHT_NOTE 7
299#define SHT_NOBITS 8
300#define SHT_REL 9
301#define SHT_SHLIB 10
302#define SHT_DYNSYM 11
303#define SHT_NUM 12
304#define SHT_LOPROC 0x70000000
305#define SHT_HIPROC 0x7fffffff
306#define SHT_LOUSER 0x80000000
307#define SHT_HIUSER 0xffffffff
308
309/* sh_flags */
310#define SHF_WRITE 0x1
311#define SHF_ALLOC 0x2
312#define SHF_EXECINSTR 0x4
313#define SHF_MASKPROC 0xf0000000
314
315/* special section indexes */
316#define SHN_UNDEF 0
317#define SHN_LORESERVE 0xff00
318#define SHN_LOPROC 0xff00
319#define SHN_HIPROC 0xff1f
320#define SHN_ABS 0xfff1
321#define SHN_COMMON 0xfff2
322#define SHN_HIRESERVE 0xffff
323
324typedef struct {
325 Elf32_Word sh_name;
326 Elf32_Word sh_type;
327 Elf32_Word sh_flags;
328 Elf32_Addr sh_addr;
329 Elf32_Off sh_offset;
330 Elf32_Word sh_size;
331 Elf32_Word sh_link;
332 Elf32_Word sh_info;
333 Elf32_Word sh_addralign;
334 Elf32_Word sh_entsize;
335} Elf32_Shdr;
336
337typedef struct elf64_shdr {
338 Elf64_Word sh_name; /* Section name, index in string tbl */
339 Elf64_Word sh_type; /* Type of section */
340 Elf64_Xword sh_flags; /* Miscellaneous section attributes */
341 Elf64_Addr sh_addr; /* Section virtual addr at execution */
342 Elf64_Off sh_offset; /* Section file offset */
343 Elf64_Xword sh_size; /* Size of section in bytes */
344 Elf64_Word sh_link; /* Index of another section */
345 Elf64_Word sh_info; /* Additional section information */
346 Elf64_Xword sh_addralign; /* Section alignment */
347 Elf64_Xword sh_entsize; /* Entry size if section holds table */
348} Elf64_Shdr;
349
350#define EI_MAG0 0 /* e_ident[] indexes */
351#define EI_MAG1 1
352#define EI_MAG2 2
353#define EI_MAG3 3
354#define EI_CLASS 4
355#define EI_DATA 5
356#define EI_VERSION 6
357#define EI_OSABI 7
358#define EI_PAD 8
359
360#define ELFMAG0 0x7f /* EI_MAG */
361#define ELFMAG1 'E'
362#define ELFMAG2 'L'
363#define ELFMAG3 'F'
364#define ELFMAG "\177ELF"
365#define SELFMAG 4
366
367#define ELFCLASSNONE 0 /* EI_CLASS */
368#define ELFCLASS32 1
369#define ELFCLASS64 2
370#define ELFCLASSNUM 3
371
372#define ELFDATANONE 0 /* e_ident[EI_DATA] */
373#define ELFDATA2LSB 1
374#define ELFDATA2MSB 2
375
376#define EV_NONE 0 /* e_version, EI_VERSION */
377#define EV_CURRENT 1
378#define EV_NUM 2
379
380#define ELFOSABI_NONE 0
381#define ELFOSABI_LINUX 3
382
383#ifndef ELF_OSABI
384#define ELF_OSABI ELFOSABI_NONE
385#endif
386
387/* Notes used in ET_CORE */
388#define NT_PRSTATUS 1
389#define NT_PRFPREG 2
390#define NT_PRPSINFO 3
391#define NT_TASKSTRUCT 4
392#define NT_AUXV 6
393#define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */
394
395
396/* Note header in a PT_NOTE section */
397typedef struct elf32_note {
398 Elf32_Word n_namesz; /* Name size */
399 Elf32_Word n_descsz; /* Content size */
400 Elf32_Word n_type; /* Content type */
401} Elf32_Nhdr;
402
403/* Note header in a PT_NOTE section */
404typedef struct elf64_note {
405 Elf64_Word n_namesz; /* Name size */
406 Elf64_Word n_descsz; /* Content size */
407 Elf64_Word n_type; /* Content type */
408} Elf64_Nhdr;
409
410#if ELF_CLASS == ELFCLASS32
411
412extern Elf32_Dyn _DYNAMIC [];
413#define elfhdr elf32_hdr
414#define elf_phdr elf32_phdr
415#define elf_note elf32_note
416
417#else
418
419extern Elf64_Dyn _DYNAMIC [];
420#define elfhdr elf64_hdr
421#define elf_phdr elf64_phdr
422#define elf_note elf64_note
423
424#endif
425
426
427#endif /* _LINUX_ELF_H */