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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> |
f001e47f | 6 | #include <linux/elf-em.h> |
1da177e4 LT |
7 | #include <asm/elf.h> |
8 | ||
6cf24f03 AM |
9 | struct file; |
10 | ||
1da177e4 LT |
11 | #ifndef elf_read_implies_exec |
12 | /* Executables for which elf_read_implies_exec() returns TRUE will | |
13 | have the READ_IMPLIES_EXEC personality flag set automatically. | |
14 | Override in asm/elf.h as needed. */ | |
15 | # define elf_read_implies_exec(ex, have_pt_gnu_stack) 0 | |
16 | #endif | |
17 | ||
18 | /* 32-bit ELF base types. */ | |
19 | typedef __u32 Elf32_Addr; | |
20 | typedef __u16 Elf32_Half; | |
21 | typedef __u32 Elf32_Off; | |
22 | typedef __s32 Elf32_Sword; | |
23 | typedef __u32 Elf32_Word; | |
24 | ||
25 | /* 64-bit ELF base types. */ | |
26 | typedef __u64 Elf64_Addr; | |
27 | typedef __u16 Elf64_Half; | |
28 | typedef __s16 Elf64_SHalf; | |
29 | typedef __u64 Elf64_Off; | |
30 | typedef __s32 Elf64_Sword; | |
31 | typedef __u32 Elf64_Word; | |
32 | typedef __u64 Elf64_Xword; | |
33 | typedef __s64 Elf64_Sxword; | |
34 | ||
35 | /* These constants are for the segment types stored in the image headers */ | |
36 | #define PT_NULL 0 | |
37 | #define PT_LOAD 1 | |
38 | #define PT_DYNAMIC 2 | |
39 | #define PT_INTERP 3 | |
40 | #define PT_NOTE 4 | |
41 | #define PT_SHLIB 5 | |
42 | #define PT_PHDR 6 | |
43 | #define PT_TLS 7 /* Thread local storage segment */ | |
44 | #define PT_LOOS 0x60000000 /* OS-specific */ | |
45 | #define PT_HIOS 0x6fffffff /* OS-specific */ | |
46 | #define PT_LOPROC 0x70000000 | |
47 | #define PT_HIPROC 0x7fffffff | |
48 | #define PT_GNU_EH_FRAME 0x6474e550 | |
49 | ||
50 | #define PT_GNU_STACK (PT_LOOS + 0x474e551) | |
51 | ||
52 | /* These constants define the different elf file types */ | |
53 | #define ET_NONE 0 | |
54 | #define ET_REL 1 | |
55 | #define ET_EXEC 2 | |
56 | #define ET_DYN 3 | |
57 | #define ET_CORE 4 | |
58 | #define ET_LOPROC 0xff00 | |
59 | #define ET_HIPROC 0xffff | |
60 | ||
1da177e4 LT |
61 | /* This is the info that is needed to parse the dynamic section of the file */ |
62 | #define DT_NULL 0 | |
63 | #define DT_NEEDED 1 | |
64 | #define DT_PLTRELSZ 2 | |
65 | #define DT_PLTGOT 3 | |
66 | #define DT_HASH 4 | |
67 | #define DT_STRTAB 5 | |
68 | #define DT_SYMTAB 6 | |
69 | #define DT_RELA 7 | |
70 | #define DT_RELASZ 8 | |
71 | #define DT_RELAENT 9 | |
72 | #define DT_STRSZ 10 | |
73 | #define DT_SYMENT 11 | |
74 | #define DT_INIT 12 | |
75 | #define DT_FINI 13 | |
76 | #define DT_SONAME 14 | |
77 | #define DT_RPATH 15 | |
78 | #define DT_SYMBOLIC 16 | |
79 | #define DT_REL 17 | |
80 | #define DT_RELSZ 18 | |
81 | #define DT_RELENT 19 | |
82 | #define DT_PLTREL 20 | |
83 | #define DT_DEBUG 21 | |
84 | #define DT_TEXTREL 22 | |
85 | #define DT_JMPREL 23 | |
86 | #define DT_LOPROC 0x70000000 | |
87 | #define DT_HIPROC 0x7fffffff | |
88 | ||
89 | /* This info is needed when parsing the symbol table */ | |
90 | #define STB_LOCAL 0 | |
91 | #define STB_GLOBAL 1 | |
92 | #define STB_WEAK 2 | |
93 | ||
94 | #define STT_NOTYPE 0 | |
95 | #define STT_OBJECT 1 | |
96 | #define STT_FUNC 2 | |
97 | #define STT_SECTION 3 | |
98 | #define STT_FILE 4 | |
b3f3d614 JB |
99 | #define STT_COMMON 5 |
100 | #define STT_TLS 6 | |
1da177e4 LT |
101 | |
102 | #define ELF_ST_BIND(x) ((x) >> 4) | |
103 | #define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf) | |
104 | #define ELF32_ST_BIND(x) ELF_ST_BIND(x) | |
105 | #define ELF32_ST_TYPE(x) ELF_ST_TYPE(x) | |
106 | #define ELF64_ST_BIND(x) ELF_ST_BIND(x) | |
107 | #define ELF64_ST_TYPE(x) ELF_ST_TYPE(x) | |
108 | ||
1da177e4 LT |
109 | typedef struct dynamic{ |
110 | Elf32_Sword d_tag; | |
111 | union{ | |
112 | Elf32_Sword d_val; | |
113 | Elf32_Addr d_ptr; | |
114 | } d_un; | |
115 | } Elf32_Dyn; | |
116 | ||
117 | typedef struct { | |
118 | Elf64_Sxword d_tag; /* entry tag value */ | |
119 | union { | |
120 | Elf64_Xword d_val; | |
121 | Elf64_Addr d_ptr; | |
122 | } d_un; | |
123 | } Elf64_Dyn; | |
124 | ||
125 | /* The following are used with relocations */ | |
126 | #define ELF32_R_SYM(x) ((x) >> 8) | |
127 | #define ELF32_R_TYPE(x) ((x) & 0xff) | |
128 | ||
129 | #define ELF64_R_SYM(i) ((i) >> 32) | |
130 | #define ELF64_R_TYPE(i) ((i) & 0xffffffff) | |
131 | ||
132 | typedef struct elf32_rel { | |
133 | Elf32_Addr r_offset; | |
134 | Elf32_Word r_info; | |
135 | } Elf32_Rel; | |
136 | ||
137 | typedef struct elf64_rel { | |
138 | Elf64_Addr r_offset; /* Location at which to apply the action */ | |
139 | Elf64_Xword r_info; /* index and type of relocation */ | |
140 | } Elf64_Rel; | |
141 | ||
142 | typedef struct elf32_rela{ | |
143 | Elf32_Addr r_offset; | |
144 | Elf32_Word r_info; | |
145 | Elf32_Sword r_addend; | |
146 | } Elf32_Rela; | |
147 | ||
148 | typedef struct elf64_rela { | |
149 | Elf64_Addr r_offset; /* Location at which to apply the action */ | |
150 | Elf64_Xword r_info; /* index and type of relocation */ | |
151 | Elf64_Sxword r_addend; /* Constant addend used to compute value */ | |
152 | } Elf64_Rela; | |
153 | ||
154 | typedef struct elf32_sym{ | |
155 | Elf32_Word st_name; | |
156 | Elf32_Addr st_value; | |
157 | Elf32_Word st_size; | |
158 | unsigned char st_info; | |
159 | unsigned char st_other; | |
160 | Elf32_Half st_shndx; | |
161 | } Elf32_Sym; | |
162 | ||
163 | typedef struct elf64_sym { | |
164 | Elf64_Word st_name; /* Symbol name, index in string tbl */ | |
165 | unsigned char st_info; /* Type and binding attributes */ | |
166 | unsigned char st_other; /* No defined meaning, 0 */ | |
167 | Elf64_Half st_shndx; /* Associated section index */ | |
168 | Elf64_Addr st_value; /* Value of the symbol */ | |
169 | Elf64_Xword st_size; /* Associated symbol size */ | |
170 | } Elf64_Sym; | |
171 | ||
172 | ||
173 | #define EI_NIDENT 16 | |
174 | ||
175 | typedef struct elf32_hdr{ | |
176 | unsigned char e_ident[EI_NIDENT]; | |
177 | Elf32_Half e_type; | |
178 | Elf32_Half e_machine; | |
179 | Elf32_Word e_version; | |
180 | Elf32_Addr e_entry; /* Entry point */ | |
181 | Elf32_Off e_phoff; | |
182 | Elf32_Off e_shoff; | |
183 | Elf32_Word e_flags; | |
184 | Elf32_Half e_ehsize; | |
185 | Elf32_Half e_phentsize; | |
186 | Elf32_Half e_phnum; | |
187 | Elf32_Half e_shentsize; | |
188 | Elf32_Half e_shnum; | |
189 | Elf32_Half e_shstrndx; | |
190 | } Elf32_Ehdr; | |
191 | ||
192 | typedef struct elf64_hdr { | |
193 | unsigned char e_ident[16]; /* ELF "magic number" */ | |
194 | Elf64_Half e_type; | |
195 | Elf64_Half e_machine; | |
196 | Elf64_Word e_version; | |
197 | Elf64_Addr e_entry; /* Entry point virtual address */ | |
198 | Elf64_Off e_phoff; /* Program header table file offset */ | |
199 | Elf64_Off e_shoff; /* Section header table file offset */ | |
200 | Elf64_Word e_flags; | |
201 | Elf64_Half e_ehsize; | |
202 | Elf64_Half e_phentsize; | |
203 | Elf64_Half e_phnum; | |
204 | Elf64_Half e_shentsize; | |
205 | Elf64_Half e_shnum; | |
206 | Elf64_Half e_shstrndx; | |
207 | } Elf64_Ehdr; | |
208 | ||
209 | /* These constants define the permissions on sections in the program | |
210 | header, p_flags. */ | |
211 | #define PF_R 0x4 | |
212 | #define PF_W 0x2 | |
213 | #define PF_X 0x1 | |
214 | ||
215 | typedef struct elf32_phdr{ | |
216 | Elf32_Word p_type; | |
217 | Elf32_Off p_offset; | |
218 | Elf32_Addr p_vaddr; | |
219 | Elf32_Addr p_paddr; | |
220 | Elf32_Word p_filesz; | |
221 | Elf32_Word p_memsz; | |
222 | Elf32_Word p_flags; | |
223 | Elf32_Word p_align; | |
224 | } Elf32_Phdr; | |
225 | ||
226 | typedef struct elf64_phdr { | |
227 | Elf64_Word p_type; | |
228 | Elf64_Word p_flags; | |
229 | Elf64_Off p_offset; /* Segment file offset */ | |
230 | Elf64_Addr p_vaddr; /* Segment virtual address */ | |
231 | Elf64_Addr p_paddr; /* Segment physical address */ | |
232 | Elf64_Xword p_filesz; /* Segment size in file */ | |
233 | Elf64_Xword p_memsz; /* Segment size in memory */ | |
234 | Elf64_Xword p_align; /* Segment alignment, file & memory */ | |
235 | } Elf64_Phdr; | |
236 | ||
237 | /* sh_type */ | |
238 | #define SHT_NULL 0 | |
239 | #define SHT_PROGBITS 1 | |
240 | #define SHT_SYMTAB 2 | |
241 | #define SHT_STRTAB 3 | |
242 | #define SHT_RELA 4 | |
243 | #define SHT_HASH 5 | |
244 | #define SHT_DYNAMIC 6 | |
245 | #define SHT_NOTE 7 | |
246 | #define SHT_NOBITS 8 | |
247 | #define SHT_REL 9 | |
248 | #define SHT_SHLIB 10 | |
249 | #define SHT_DYNSYM 11 | |
250 | #define SHT_NUM 12 | |
251 | #define SHT_LOPROC 0x70000000 | |
252 | #define SHT_HIPROC 0x7fffffff | |
253 | #define SHT_LOUSER 0x80000000 | |
254 | #define SHT_HIUSER 0xffffffff | |
255 | ||
256 | /* sh_flags */ | |
257 | #define SHF_WRITE 0x1 | |
258 | #define SHF_ALLOC 0x2 | |
259 | #define SHF_EXECINSTR 0x4 | |
260 | #define SHF_MASKPROC 0xf0000000 | |
261 | ||
262 | /* special section indexes */ | |
263 | #define SHN_UNDEF 0 | |
264 | #define SHN_LORESERVE 0xff00 | |
265 | #define SHN_LOPROC 0xff00 | |
266 | #define SHN_HIPROC 0xff1f | |
267 | #define SHN_ABS 0xfff1 | |
268 | #define SHN_COMMON 0xfff2 | |
269 | #define SHN_HIRESERVE 0xffff | |
270 | ||
271 | typedef struct { | |
272 | Elf32_Word sh_name; | |
273 | Elf32_Word sh_type; | |
274 | Elf32_Word sh_flags; | |
275 | Elf32_Addr sh_addr; | |
276 | Elf32_Off sh_offset; | |
277 | Elf32_Word sh_size; | |
278 | Elf32_Word sh_link; | |
279 | Elf32_Word sh_info; | |
280 | Elf32_Word sh_addralign; | |
281 | Elf32_Word sh_entsize; | |
282 | } Elf32_Shdr; | |
283 | ||
284 | typedef struct elf64_shdr { | |
285 | Elf64_Word sh_name; /* Section name, index in string tbl */ | |
286 | Elf64_Word sh_type; /* Type of section */ | |
287 | Elf64_Xword sh_flags; /* Miscellaneous section attributes */ | |
288 | Elf64_Addr sh_addr; /* Section virtual addr at execution */ | |
289 | Elf64_Off sh_offset; /* Section file offset */ | |
290 | Elf64_Xword sh_size; /* Size of section in bytes */ | |
291 | Elf64_Word sh_link; /* Index of another section */ | |
292 | Elf64_Word sh_info; /* Additional section information */ | |
293 | Elf64_Xword sh_addralign; /* Section alignment */ | |
294 | Elf64_Xword sh_entsize; /* Entry size if section holds table */ | |
295 | } Elf64_Shdr; | |
296 | ||
297 | #define EI_MAG0 0 /* e_ident[] indexes */ | |
298 | #define EI_MAG1 1 | |
299 | #define EI_MAG2 2 | |
300 | #define EI_MAG3 3 | |
301 | #define EI_CLASS 4 | |
302 | #define EI_DATA 5 | |
303 | #define EI_VERSION 6 | |
304 | #define EI_OSABI 7 | |
305 | #define EI_PAD 8 | |
306 | ||
307 | #define ELFMAG0 0x7f /* EI_MAG */ | |
308 | #define ELFMAG1 'E' | |
309 | #define ELFMAG2 'L' | |
310 | #define ELFMAG3 'F' | |
311 | #define ELFMAG "\177ELF" | |
312 | #define SELFMAG 4 | |
313 | ||
314 | #define ELFCLASSNONE 0 /* EI_CLASS */ | |
315 | #define ELFCLASS32 1 | |
316 | #define ELFCLASS64 2 | |
317 | #define ELFCLASSNUM 3 | |
318 | ||
319 | #define ELFDATANONE 0 /* e_ident[EI_DATA] */ | |
320 | #define ELFDATA2LSB 1 | |
321 | #define ELFDATA2MSB 2 | |
322 | ||
323 | #define EV_NONE 0 /* e_version, EI_VERSION */ | |
324 | #define EV_CURRENT 1 | |
325 | #define EV_NUM 2 | |
326 | ||
327 | #define ELFOSABI_NONE 0 | |
328 | #define ELFOSABI_LINUX 3 | |
329 | ||
330 | #ifndef ELF_OSABI | |
331 | #define ELF_OSABI ELFOSABI_NONE | |
332 | #endif | |
333 | ||
334 | /* Notes used in ET_CORE */ | |
335 | #define NT_PRSTATUS 1 | |
336 | #define NT_PRFPREG 2 | |
337 | #define NT_PRPSINFO 3 | |
338 | #define NT_TASKSTRUCT 4 | |
339 | #define NT_AUXV 6 | |
340 | #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ | |
341 | ||
342 | ||
343 | /* Note header in a PT_NOTE section */ | |
344 | typedef struct elf32_note { | |
345 | Elf32_Word n_namesz; /* Name size */ | |
346 | Elf32_Word n_descsz; /* Content size */ | |
347 | Elf32_Word n_type; /* Content type */ | |
348 | } Elf32_Nhdr; | |
349 | ||
350 | /* Note header in a PT_NOTE section */ | |
351 | typedef struct elf64_note { | |
352 | Elf64_Word n_namesz; /* Name size */ | |
353 | Elf64_Word n_descsz; /* Content size */ | |
354 | Elf64_Word n_type; /* Content type */ | |
355 | } Elf64_Nhdr; | |
356 | ||
357 | #if ELF_CLASS == ELFCLASS32 | |
358 | ||
359 | extern Elf32_Dyn _DYNAMIC []; | |
360 | #define elfhdr elf32_hdr | |
361 | #define elf_phdr elf32_phdr | |
362 | #define elf_note elf32_note | |
386d9a7e | 363 | #define elf_addr_t Elf32_Off |
1da177e4 LT |
364 | |
365 | #else | |
366 | ||
367 | extern Elf64_Dyn _DYNAMIC []; | |
368 | #define elfhdr elf64_hdr | |
369 | #define elf_phdr elf64_phdr | |
370 | #define elf_note elf64_note | |
386d9a7e | 371 | #define elf_addr_t Elf64_Off |
1da177e4 LT |
372 | |
373 | #endif | |
374 | ||
bf1ab978 DGM |
375 | #ifndef ARCH_HAVE_EXTRA_ELF_NOTES |
376 | static inline int arch_notes_size(void) { return 0; } | |
377 | static inline void arch_write_notes(struct file *file) { } | |
378 | ||
379 | #define ELF_CORE_EXTRA_NOTES_SIZE arch_notes_size() | |
380 | #define ELF_CORE_WRITE_EXTRA_NOTES arch_write_notes(file) | |
381 | #endif /* ARCH_HAVE_EXTRA_ELF_NOTES */ | |
1da177e4 LT |
382 | |
383 | #endif /* _LINUX_ELF_H */ |