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1da177e4 LT |
1 | #ifndef _LINUX_ELF_H |
2 | #define _LINUX_ELF_H | |
3 | ||
4 | #include <linux/types.h> | |
36d57ac4 | 5 | #include <linux/auxvec.h> |
1da177e4 LT |
6 | #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. */ | |
16 | typedef __u32 Elf32_Addr; | |
17 | typedef __u16 Elf32_Half; | |
18 | typedef __u32 Elf32_Off; | |
19 | typedef __s32 Elf32_Sword; | |
20 | typedef __u32 Elf32_Word; | |
21 | ||
22 | /* 64-bit ELF base types. */ | |
23 | typedef __u64 Elf64_Addr; | |
24 | typedef __u16 Elf64_Half; | |
25 | typedef __s16 Elf64_SHalf; | |
26 | typedef __u64 Elf64_Off; | |
27 | typedef __s32 Elf64_Sword; | |
28 | typedef __u32 Elf64_Word; | |
29 | typedef __u64 Elf64_Xword; | |
30 | typedef __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 | |
b3f3d614 JB |
154 | #define STT_COMMON 5 |
155 | #define STT_TLS 6 | |
1da177e4 LT |
156 | |
157 | #define ELF_ST_BIND(x) ((x) >> 4) | |
158 | #define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf) | |
159 | #define ELF32_ST_BIND(x) ELF_ST_BIND(x) | |
160 | #define ELF32_ST_TYPE(x) ELF_ST_TYPE(x) | |
161 | #define ELF64_ST_BIND(x) ELF_ST_BIND(x) | |
162 | #define ELF64_ST_TYPE(x) ELF_ST_TYPE(x) | |
163 | ||
1da177e4 LT |
164 | typedef struct dynamic{ |
165 | Elf32_Sword d_tag; | |
166 | union{ | |
167 | Elf32_Sword d_val; | |
168 | Elf32_Addr d_ptr; | |
169 | } d_un; | |
170 | } Elf32_Dyn; | |
171 | ||
172 | typedef struct { | |
173 | Elf64_Sxword d_tag; /* entry tag value */ | |
174 | union { | |
175 | Elf64_Xword d_val; | |
176 | Elf64_Addr d_ptr; | |
177 | } d_un; | |
178 | } Elf64_Dyn; | |
179 | ||
180 | /* The following are used with relocations */ | |
181 | #define ELF32_R_SYM(x) ((x) >> 8) | |
182 | #define ELF32_R_TYPE(x) ((x) & 0xff) | |
183 | ||
184 | #define ELF64_R_SYM(i) ((i) >> 32) | |
185 | #define ELF64_R_TYPE(i) ((i) & 0xffffffff) | |
186 | ||
187 | typedef struct elf32_rel { | |
188 | Elf32_Addr r_offset; | |
189 | Elf32_Word r_info; | |
190 | } Elf32_Rel; | |
191 | ||
192 | typedef struct elf64_rel { | |
193 | Elf64_Addr r_offset; /* Location at which to apply the action */ | |
194 | Elf64_Xword r_info; /* index and type of relocation */ | |
195 | } Elf64_Rel; | |
196 | ||
197 | typedef struct elf32_rela{ | |
198 | Elf32_Addr r_offset; | |
199 | Elf32_Word r_info; | |
200 | Elf32_Sword r_addend; | |
201 | } Elf32_Rela; | |
202 | ||
203 | typedef struct elf64_rela { | |
204 | Elf64_Addr r_offset; /* Location at which to apply the action */ | |
205 | Elf64_Xword r_info; /* index and type of relocation */ | |
206 | Elf64_Sxword r_addend; /* Constant addend used to compute value */ | |
207 | } Elf64_Rela; | |
208 | ||
209 | typedef struct elf32_sym{ | |
210 | Elf32_Word st_name; | |
211 | Elf32_Addr st_value; | |
212 | Elf32_Word st_size; | |
213 | unsigned char st_info; | |
214 | unsigned char st_other; | |
215 | Elf32_Half st_shndx; | |
216 | } Elf32_Sym; | |
217 | ||
218 | typedef struct elf64_sym { | |
219 | Elf64_Word st_name; /* Symbol name, index in string tbl */ | |
220 | unsigned char st_info; /* Type and binding attributes */ | |
221 | unsigned char st_other; /* No defined meaning, 0 */ | |
222 | Elf64_Half st_shndx; /* Associated section index */ | |
223 | Elf64_Addr st_value; /* Value of the symbol */ | |
224 | Elf64_Xword st_size; /* Associated symbol size */ | |
225 | } Elf64_Sym; | |
226 | ||
227 | ||
228 | #define EI_NIDENT 16 | |
229 | ||
230 | typedef struct elf32_hdr{ | |
231 | unsigned char e_ident[EI_NIDENT]; | |
232 | Elf32_Half e_type; | |
233 | Elf32_Half e_machine; | |
234 | Elf32_Word e_version; | |
235 | Elf32_Addr e_entry; /* Entry point */ | |
236 | Elf32_Off e_phoff; | |
237 | Elf32_Off e_shoff; | |
238 | Elf32_Word e_flags; | |
239 | Elf32_Half e_ehsize; | |
240 | Elf32_Half e_phentsize; | |
241 | Elf32_Half e_phnum; | |
242 | Elf32_Half e_shentsize; | |
243 | Elf32_Half e_shnum; | |
244 | Elf32_Half e_shstrndx; | |
245 | } Elf32_Ehdr; | |
246 | ||
247 | typedef struct elf64_hdr { | |
248 | unsigned char e_ident[16]; /* ELF "magic number" */ | |
249 | Elf64_Half e_type; | |
250 | Elf64_Half e_machine; | |
251 | Elf64_Word e_version; | |
252 | Elf64_Addr e_entry; /* Entry point virtual address */ | |
253 | Elf64_Off e_phoff; /* Program header table file offset */ | |
254 | Elf64_Off e_shoff; /* Section header table file offset */ | |
255 | Elf64_Word e_flags; | |
256 | Elf64_Half e_ehsize; | |
257 | Elf64_Half e_phentsize; | |
258 | Elf64_Half e_phnum; | |
259 | Elf64_Half e_shentsize; | |
260 | Elf64_Half e_shnum; | |
261 | Elf64_Half e_shstrndx; | |
262 | } Elf64_Ehdr; | |
263 | ||
264 | /* These constants define the permissions on sections in the program | |
265 | header, p_flags. */ | |
266 | #define PF_R 0x4 | |
267 | #define PF_W 0x2 | |
268 | #define PF_X 0x1 | |
269 | ||
270 | typedef struct elf32_phdr{ | |
271 | Elf32_Word p_type; | |
272 | Elf32_Off p_offset; | |
273 | Elf32_Addr p_vaddr; | |
274 | Elf32_Addr p_paddr; | |
275 | Elf32_Word p_filesz; | |
276 | Elf32_Word p_memsz; | |
277 | Elf32_Word p_flags; | |
278 | Elf32_Word p_align; | |
279 | } Elf32_Phdr; | |
280 | ||
281 | typedef struct elf64_phdr { | |
282 | Elf64_Word p_type; | |
283 | Elf64_Word p_flags; | |
284 | Elf64_Off p_offset; /* Segment file offset */ | |
285 | Elf64_Addr p_vaddr; /* Segment virtual address */ | |
286 | Elf64_Addr p_paddr; /* Segment physical address */ | |
287 | Elf64_Xword p_filesz; /* Segment size in file */ | |
288 | Elf64_Xword p_memsz; /* Segment size in memory */ | |
289 | Elf64_Xword p_align; /* Segment alignment, file & memory */ | |
290 | } Elf64_Phdr; | |
291 | ||
292 | /* sh_type */ | |
293 | #define SHT_NULL 0 | |
294 | #define SHT_PROGBITS 1 | |
295 | #define SHT_SYMTAB 2 | |
296 | #define SHT_STRTAB 3 | |
297 | #define SHT_RELA 4 | |
298 | #define SHT_HASH 5 | |
299 | #define SHT_DYNAMIC 6 | |
300 | #define SHT_NOTE 7 | |
301 | #define SHT_NOBITS 8 | |
302 | #define SHT_REL 9 | |
303 | #define SHT_SHLIB 10 | |
304 | #define SHT_DYNSYM 11 | |
305 | #define SHT_NUM 12 | |
306 | #define SHT_LOPROC 0x70000000 | |
307 | #define SHT_HIPROC 0x7fffffff | |
308 | #define SHT_LOUSER 0x80000000 | |
309 | #define SHT_HIUSER 0xffffffff | |
310 | ||
311 | /* sh_flags */ | |
312 | #define SHF_WRITE 0x1 | |
313 | #define SHF_ALLOC 0x2 | |
314 | #define SHF_EXECINSTR 0x4 | |
315 | #define SHF_MASKPROC 0xf0000000 | |
316 | ||
317 | /* special section indexes */ | |
318 | #define SHN_UNDEF 0 | |
319 | #define SHN_LORESERVE 0xff00 | |
320 | #define SHN_LOPROC 0xff00 | |
321 | #define SHN_HIPROC 0xff1f | |
322 | #define SHN_ABS 0xfff1 | |
323 | #define SHN_COMMON 0xfff2 | |
324 | #define SHN_HIRESERVE 0xffff | |
325 | ||
326 | typedef struct { | |
327 | Elf32_Word sh_name; | |
328 | Elf32_Word sh_type; | |
329 | Elf32_Word sh_flags; | |
330 | Elf32_Addr sh_addr; | |
331 | Elf32_Off sh_offset; | |
332 | Elf32_Word sh_size; | |
333 | Elf32_Word sh_link; | |
334 | Elf32_Word sh_info; | |
335 | Elf32_Word sh_addralign; | |
336 | Elf32_Word sh_entsize; | |
337 | } Elf32_Shdr; | |
338 | ||
339 | typedef struct elf64_shdr { | |
340 | Elf64_Word sh_name; /* Section name, index in string tbl */ | |
341 | Elf64_Word sh_type; /* Type of section */ | |
342 | Elf64_Xword sh_flags; /* Miscellaneous section attributes */ | |
343 | Elf64_Addr sh_addr; /* Section virtual addr at execution */ | |
344 | Elf64_Off sh_offset; /* Section file offset */ | |
345 | Elf64_Xword sh_size; /* Size of section in bytes */ | |
346 | Elf64_Word sh_link; /* Index of another section */ | |
347 | Elf64_Word sh_info; /* Additional section information */ | |
348 | Elf64_Xword sh_addralign; /* Section alignment */ | |
349 | Elf64_Xword sh_entsize; /* Entry size if section holds table */ | |
350 | } Elf64_Shdr; | |
351 | ||
352 | #define EI_MAG0 0 /* e_ident[] indexes */ | |
353 | #define EI_MAG1 1 | |
354 | #define EI_MAG2 2 | |
355 | #define EI_MAG3 3 | |
356 | #define EI_CLASS 4 | |
357 | #define EI_DATA 5 | |
358 | #define EI_VERSION 6 | |
359 | #define EI_OSABI 7 | |
360 | #define EI_PAD 8 | |
361 | ||
362 | #define ELFMAG0 0x7f /* EI_MAG */ | |
363 | #define ELFMAG1 'E' | |
364 | #define ELFMAG2 'L' | |
365 | #define ELFMAG3 'F' | |
366 | #define ELFMAG "\177ELF" | |
367 | #define SELFMAG 4 | |
368 | ||
369 | #define ELFCLASSNONE 0 /* EI_CLASS */ | |
370 | #define ELFCLASS32 1 | |
371 | #define ELFCLASS64 2 | |
372 | #define ELFCLASSNUM 3 | |
373 | ||
374 | #define ELFDATANONE 0 /* e_ident[EI_DATA] */ | |
375 | #define ELFDATA2LSB 1 | |
376 | #define ELFDATA2MSB 2 | |
377 | ||
378 | #define EV_NONE 0 /* e_version, EI_VERSION */ | |
379 | #define EV_CURRENT 1 | |
380 | #define EV_NUM 2 | |
381 | ||
382 | #define ELFOSABI_NONE 0 | |
383 | #define ELFOSABI_LINUX 3 | |
384 | ||
385 | #ifndef ELF_OSABI | |
386 | #define ELF_OSABI ELFOSABI_NONE | |
387 | #endif | |
388 | ||
389 | /* Notes used in ET_CORE */ | |
390 | #define NT_PRSTATUS 1 | |
391 | #define NT_PRFPREG 2 | |
392 | #define NT_PRPSINFO 3 | |
393 | #define NT_TASKSTRUCT 4 | |
394 | #define NT_AUXV 6 | |
395 | #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ | |
396 | ||
397 | ||
398 | /* Note header in a PT_NOTE section */ | |
399 | typedef struct elf32_note { | |
400 | Elf32_Word n_namesz; /* Name size */ | |
401 | Elf32_Word n_descsz; /* Content size */ | |
402 | Elf32_Word n_type; /* Content type */ | |
403 | } Elf32_Nhdr; | |
404 | ||
405 | /* Note header in a PT_NOTE section */ | |
406 | typedef struct elf64_note { | |
407 | Elf64_Word n_namesz; /* Name size */ | |
408 | Elf64_Word n_descsz; /* Content size */ | |
409 | Elf64_Word n_type; /* Content type */ | |
410 | } Elf64_Nhdr; | |
411 | ||
412 | #if ELF_CLASS == ELFCLASS32 | |
413 | ||
414 | extern Elf32_Dyn _DYNAMIC []; | |
415 | #define elfhdr elf32_hdr | |
416 | #define elf_phdr elf32_phdr | |
417 | #define elf_note elf32_note | |
418 | ||
419 | #else | |
420 | ||
421 | extern Elf64_Dyn _DYNAMIC []; | |
422 | #define elfhdr elf64_hdr | |
423 | #define elf_phdr elf64_phdr | |
424 | #define elf_note elf64_note | |
425 | ||
426 | #endif | |
427 | ||
428 | ||
429 | #endif /* _LINUX_ELF_H */ |