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1da177e4 LT |
1 | #ifndef _LINUX_ELF_H |
2 | #define _LINUX_ELF_H | |
3 | ||
4 | #include <linux/types.h> | |
f001e47f | 5 | #include <linux/elf-em.h> |
6cc931b9 | 6 | #ifdef __KERNEL__ |
1da177e4 | 7 | #include <asm/elf.h> |
6cc931b9 | 8 | #endif |
1da177e4 | 9 | |
6cf24f03 AM |
10 | struct file; |
11 | ||
1da177e4 LT |
12 | #ifndef elf_read_implies_exec |
13 | /* Executables for which elf_read_implies_exec() returns TRUE will | |
14 | have the READ_IMPLIES_EXEC personality flag set automatically. | |
15 | Override in asm/elf.h as needed. */ | |
16 | # define elf_read_implies_exec(ex, have_pt_gnu_stack) 0 | |
17 | #endif | |
18 | ||
19 | /* 32-bit ELF base types. */ | |
20 | typedef __u32 Elf32_Addr; | |
21 | typedef __u16 Elf32_Half; | |
22 | typedef __u32 Elf32_Off; | |
23 | typedef __s32 Elf32_Sword; | |
24 | typedef __u32 Elf32_Word; | |
25 | ||
26 | /* 64-bit ELF base types. */ | |
27 | typedef __u64 Elf64_Addr; | |
28 | typedef __u16 Elf64_Half; | |
29 | typedef __s16 Elf64_SHalf; | |
30 | typedef __u64 Elf64_Off; | |
31 | typedef __s32 Elf64_Sword; | |
32 | typedef __u32 Elf64_Word; | |
33 | typedef __u64 Elf64_Xword; | |
34 | typedef __s64 Elf64_Sxword; | |
35 | ||
36 | /* These constants are for the segment types stored in the image headers */ | |
37 | #define PT_NULL 0 | |
38 | #define PT_LOAD 1 | |
39 | #define PT_DYNAMIC 2 | |
40 | #define PT_INTERP 3 | |
41 | #define PT_NOTE 4 | |
42 | #define PT_SHLIB 5 | |
43 | #define PT_PHDR 6 | |
44 | #define PT_TLS 7 /* Thread local storage segment */ | |
45 | #define PT_LOOS 0x60000000 /* OS-specific */ | |
46 | #define PT_HIOS 0x6fffffff /* OS-specific */ | |
47 | #define PT_LOPROC 0x70000000 | |
48 | #define PT_HIPROC 0x7fffffff | |
49 | #define PT_GNU_EH_FRAME 0x6474e550 | |
50 | ||
51 | #define PT_GNU_STACK (PT_LOOS + 0x474e551) | |
52 | ||
53 | /* These constants define the different elf file types */ | |
54 | #define ET_NONE 0 | |
55 | #define ET_REL 1 | |
56 | #define ET_EXEC 2 | |
57 | #define ET_DYN 3 | |
58 | #define ET_CORE 4 | |
59 | #define ET_LOPROC 0xff00 | |
60 | #define ET_HIPROC 0xffff | |
61 | ||
1da177e4 LT |
62 | /* This is the info that is needed to parse the dynamic section of the file */ |
63 | #define DT_NULL 0 | |
64 | #define DT_NEEDED 1 | |
65 | #define DT_PLTRELSZ 2 | |
66 | #define DT_PLTGOT 3 | |
67 | #define DT_HASH 4 | |
68 | #define DT_STRTAB 5 | |
69 | #define DT_SYMTAB 6 | |
70 | #define DT_RELA 7 | |
71 | #define DT_RELASZ 8 | |
72 | #define DT_RELAENT 9 | |
73 | #define DT_STRSZ 10 | |
74 | #define DT_SYMENT 11 | |
75 | #define DT_INIT 12 | |
76 | #define DT_FINI 13 | |
77 | #define DT_SONAME 14 | |
78 | #define DT_RPATH 15 | |
79 | #define DT_SYMBOLIC 16 | |
80 | #define DT_REL 17 | |
81 | #define DT_RELSZ 18 | |
82 | #define DT_RELENT 19 | |
83 | #define DT_PLTREL 20 | |
84 | #define DT_DEBUG 21 | |
85 | #define DT_TEXTREL 22 | |
86 | #define DT_JMPREL 23 | |
d4f7a2c1 JF |
87 | #define DT_ENCODING 32 |
88 | #define OLD_DT_LOOS 0x60000000 | |
89 | #define DT_LOOS 0x6000000d | |
90 | #define DT_HIOS 0x6ffff000 | |
91 | #define DT_VALRNGLO 0x6ffffd00 | |
92 | #define DT_VALRNGHI 0x6ffffdff | |
93 | #define DT_ADDRRNGLO 0x6ffffe00 | |
94 | #define DT_ADDRRNGHI 0x6ffffeff | |
95 | #define DT_VERSYM 0x6ffffff0 | |
96 | #define DT_RELACOUNT 0x6ffffff9 | |
97 | #define DT_RELCOUNT 0x6ffffffa | |
98 | #define DT_FLAGS_1 0x6ffffffb | |
99 | #define DT_VERDEF 0x6ffffffc | |
100 | #define DT_VERDEFNUM 0x6ffffffd | |
101 | #define DT_VERNEED 0x6ffffffe | |
102 | #define DT_VERNEEDNUM 0x6fffffff | |
103 | #define OLD_DT_HIOS 0x6fffffff | |
1da177e4 LT |
104 | #define DT_LOPROC 0x70000000 |
105 | #define DT_HIPROC 0x7fffffff | |
106 | ||
107 | /* This info is needed when parsing the symbol table */ | |
108 | #define STB_LOCAL 0 | |
109 | #define STB_GLOBAL 1 | |
110 | #define STB_WEAK 2 | |
111 | ||
112 | #define STT_NOTYPE 0 | |
113 | #define STT_OBJECT 1 | |
114 | #define STT_FUNC 2 | |
115 | #define STT_SECTION 3 | |
116 | #define STT_FILE 4 | |
b3f3d614 JB |
117 | #define STT_COMMON 5 |
118 | #define STT_TLS 6 | |
1da177e4 LT |
119 | |
120 | #define ELF_ST_BIND(x) ((x) >> 4) | |
121 | #define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf) | |
122 | #define ELF32_ST_BIND(x) ELF_ST_BIND(x) | |
123 | #define ELF32_ST_TYPE(x) ELF_ST_TYPE(x) | |
124 | #define ELF64_ST_BIND(x) ELF_ST_BIND(x) | |
125 | #define ELF64_ST_TYPE(x) ELF_ST_TYPE(x) | |
126 | ||
1da177e4 LT |
127 | typedef struct dynamic{ |
128 | Elf32_Sword d_tag; | |
129 | union{ | |
130 | Elf32_Sword d_val; | |
131 | Elf32_Addr d_ptr; | |
132 | } d_un; | |
133 | } Elf32_Dyn; | |
134 | ||
135 | typedef struct { | |
136 | Elf64_Sxword d_tag; /* entry tag value */ | |
137 | union { | |
138 | Elf64_Xword d_val; | |
139 | Elf64_Addr d_ptr; | |
140 | } d_un; | |
141 | } Elf64_Dyn; | |
142 | ||
143 | /* The following are used with relocations */ | |
144 | #define ELF32_R_SYM(x) ((x) >> 8) | |
145 | #define ELF32_R_TYPE(x) ((x) & 0xff) | |
146 | ||
147 | #define ELF64_R_SYM(i) ((i) >> 32) | |
148 | #define ELF64_R_TYPE(i) ((i) & 0xffffffff) | |
149 | ||
150 | typedef struct elf32_rel { | |
151 | Elf32_Addr r_offset; | |
152 | Elf32_Word r_info; | |
153 | } Elf32_Rel; | |
154 | ||
155 | typedef struct elf64_rel { | |
156 | Elf64_Addr r_offset; /* Location at which to apply the action */ | |
157 | Elf64_Xword r_info; /* index and type of relocation */ | |
158 | } Elf64_Rel; | |
159 | ||
160 | typedef struct elf32_rela{ | |
161 | Elf32_Addr r_offset; | |
162 | Elf32_Word r_info; | |
163 | Elf32_Sword r_addend; | |
164 | } Elf32_Rela; | |
165 | ||
166 | typedef struct elf64_rela { | |
167 | Elf64_Addr r_offset; /* Location at which to apply the action */ | |
168 | Elf64_Xword r_info; /* index and type of relocation */ | |
169 | Elf64_Sxword r_addend; /* Constant addend used to compute value */ | |
170 | } Elf64_Rela; | |
171 | ||
172 | typedef struct elf32_sym{ | |
173 | Elf32_Word st_name; | |
174 | Elf32_Addr st_value; | |
175 | Elf32_Word st_size; | |
176 | unsigned char st_info; | |
177 | unsigned char st_other; | |
178 | Elf32_Half st_shndx; | |
179 | } Elf32_Sym; | |
180 | ||
181 | typedef struct elf64_sym { | |
182 | Elf64_Word st_name; /* Symbol name, index in string tbl */ | |
183 | unsigned char st_info; /* Type and binding attributes */ | |
184 | unsigned char st_other; /* No defined meaning, 0 */ | |
185 | Elf64_Half st_shndx; /* Associated section index */ | |
186 | Elf64_Addr st_value; /* Value of the symbol */ | |
187 | Elf64_Xword st_size; /* Associated symbol size */ | |
188 | } Elf64_Sym; | |
189 | ||
190 | ||
191 | #define EI_NIDENT 16 | |
192 | ||
193 | typedef struct elf32_hdr{ | |
194 | unsigned char e_ident[EI_NIDENT]; | |
195 | Elf32_Half e_type; | |
196 | Elf32_Half e_machine; | |
197 | Elf32_Word e_version; | |
198 | Elf32_Addr e_entry; /* Entry point */ | |
199 | Elf32_Off e_phoff; | |
200 | Elf32_Off e_shoff; | |
201 | Elf32_Word e_flags; | |
202 | Elf32_Half e_ehsize; | |
203 | Elf32_Half e_phentsize; | |
204 | Elf32_Half e_phnum; | |
205 | Elf32_Half e_shentsize; | |
206 | Elf32_Half e_shnum; | |
207 | Elf32_Half e_shstrndx; | |
208 | } Elf32_Ehdr; | |
209 | ||
210 | typedef struct elf64_hdr { | |
eb6900fb | 211 | unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */ |
1da177e4 LT |
212 | Elf64_Half e_type; |
213 | Elf64_Half e_machine; | |
214 | Elf64_Word e_version; | |
215 | Elf64_Addr e_entry; /* Entry point virtual address */ | |
216 | Elf64_Off e_phoff; /* Program header table file offset */ | |
217 | Elf64_Off e_shoff; /* Section header table file offset */ | |
218 | Elf64_Word e_flags; | |
219 | Elf64_Half e_ehsize; | |
220 | Elf64_Half e_phentsize; | |
221 | Elf64_Half e_phnum; | |
222 | Elf64_Half e_shentsize; | |
223 | Elf64_Half e_shnum; | |
224 | Elf64_Half e_shstrndx; | |
225 | } Elf64_Ehdr; | |
226 | ||
227 | /* These constants define the permissions on sections in the program | |
228 | header, p_flags. */ | |
229 | #define PF_R 0x4 | |
230 | #define PF_W 0x2 | |
231 | #define PF_X 0x1 | |
232 | ||
233 | typedef struct elf32_phdr{ | |
234 | Elf32_Word p_type; | |
235 | Elf32_Off p_offset; | |
236 | Elf32_Addr p_vaddr; | |
237 | Elf32_Addr p_paddr; | |
238 | Elf32_Word p_filesz; | |
239 | Elf32_Word p_memsz; | |
240 | Elf32_Word p_flags; | |
241 | Elf32_Word p_align; | |
242 | } Elf32_Phdr; | |
243 | ||
244 | typedef struct elf64_phdr { | |
245 | Elf64_Word p_type; | |
246 | Elf64_Word p_flags; | |
247 | Elf64_Off p_offset; /* Segment file offset */ | |
248 | Elf64_Addr p_vaddr; /* Segment virtual address */ | |
249 | Elf64_Addr p_paddr; /* Segment physical address */ | |
250 | Elf64_Xword p_filesz; /* Segment size in file */ | |
251 | Elf64_Xword p_memsz; /* Segment size in memory */ | |
252 | Elf64_Xword p_align; /* Segment alignment, file & memory */ | |
253 | } Elf64_Phdr; | |
254 | ||
255 | /* sh_type */ | |
256 | #define SHT_NULL 0 | |
257 | #define SHT_PROGBITS 1 | |
258 | #define SHT_SYMTAB 2 | |
259 | #define SHT_STRTAB 3 | |
260 | #define SHT_RELA 4 | |
261 | #define SHT_HASH 5 | |
262 | #define SHT_DYNAMIC 6 | |
263 | #define SHT_NOTE 7 | |
264 | #define SHT_NOBITS 8 | |
265 | #define SHT_REL 9 | |
266 | #define SHT_SHLIB 10 | |
267 | #define SHT_DYNSYM 11 | |
268 | #define SHT_NUM 12 | |
269 | #define SHT_LOPROC 0x70000000 | |
270 | #define SHT_HIPROC 0x7fffffff | |
271 | #define SHT_LOUSER 0x80000000 | |
272 | #define SHT_HIUSER 0xffffffff | |
273 | ||
274 | /* sh_flags */ | |
275 | #define SHF_WRITE 0x1 | |
276 | #define SHF_ALLOC 0x2 | |
277 | #define SHF_EXECINSTR 0x4 | |
278 | #define SHF_MASKPROC 0xf0000000 | |
279 | ||
280 | /* special section indexes */ | |
281 | #define SHN_UNDEF 0 | |
282 | #define SHN_LORESERVE 0xff00 | |
283 | #define SHN_LOPROC 0xff00 | |
284 | #define SHN_HIPROC 0xff1f | |
285 | #define SHN_ABS 0xfff1 | |
286 | #define SHN_COMMON 0xfff2 | |
287 | #define SHN_HIRESERVE 0xffff | |
288 | ||
289 | typedef struct { | |
290 | Elf32_Word sh_name; | |
291 | Elf32_Word sh_type; | |
292 | Elf32_Word sh_flags; | |
293 | Elf32_Addr sh_addr; | |
294 | Elf32_Off sh_offset; | |
295 | Elf32_Word sh_size; | |
296 | Elf32_Word sh_link; | |
297 | Elf32_Word sh_info; | |
298 | Elf32_Word sh_addralign; | |
299 | Elf32_Word sh_entsize; | |
300 | } Elf32_Shdr; | |
301 | ||
302 | typedef struct elf64_shdr { | |
303 | Elf64_Word sh_name; /* Section name, index in string tbl */ | |
304 | Elf64_Word sh_type; /* Type of section */ | |
305 | Elf64_Xword sh_flags; /* Miscellaneous section attributes */ | |
306 | Elf64_Addr sh_addr; /* Section virtual addr at execution */ | |
307 | Elf64_Off sh_offset; /* Section file offset */ | |
308 | Elf64_Xword sh_size; /* Size of section in bytes */ | |
309 | Elf64_Word sh_link; /* Index of another section */ | |
310 | Elf64_Word sh_info; /* Additional section information */ | |
311 | Elf64_Xword sh_addralign; /* Section alignment */ | |
312 | Elf64_Xword sh_entsize; /* Entry size if section holds table */ | |
313 | } Elf64_Shdr; | |
314 | ||
315 | #define EI_MAG0 0 /* e_ident[] indexes */ | |
316 | #define EI_MAG1 1 | |
317 | #define EI_MAG2 2 | |
318 | #define EI_MAG3 3 | |
319 | #define EI_CLASS 4 | |
320 | #define EI_DATA 5 | |
321 | #define EI_VERSION 6 | |
322 | #define EI_OSABI 7 | |
323 | #define EI_PAD 8 | |
324 | ||
325 | #define ELFMAG0 0x7f /* EI_MAG */ | |
326 | #define ELFMAG1 'E' | |
327 | #define ELFMAG2 'L' | |
328 | #define ELFMAG3 'F' | |
329 | #define ELFMAG "\177ELF" | |
330 | #define SELFMAG 4 | |
331 | ||
332 | #define ELFCLASSNONE 0 /* EI_CLASS */ | |
333 | #define ELFCLASS32 1 | |
334 | #define ELFCLASS64 2 | |
335 | #define ELFCLASSNUM 3 | |
336 | ||
337 | #define ELFDATANONE 0 /* e_ident[EI_DATA] */ | |
338 | #define ELFDATA2LSB 1 | |
339 | #define ELFDATA2MSB 2 | |
340 | ||
341 | #define EV_NONE 0 /* e_version, EI_VERSION */ | |
342 | #define EV_CURRENT 1 | |
343 | #define EV_NUM 2 | |
344 | ||
345 | #define ELFOSABI_NONE 0 | |
346 | #define ELFOSABI_LINUX 3 | |
347 | ||
348 | #ifndef ELF_OSABI | |
349 | #define ELF_OSABI ELFOSABI_NONE | |
350 | #endif | |
351 | ||
352 | /* Notes used in ET_CORE */ | |
353 | #define NT_PRSTATUS 1 | |
354 | #define NT_PRFPREG 2 | |
355 | #define NT_PRPSINFO 3 | |
356 | #define NT_TASKSTRUCT 4 | |
357 | #define NT_AUXV 6 | |
358 | #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ | |
1f7d6668 | 359 | #define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */ |
24f1a849 | 360 | #define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */ |
f3e909c2 | 361 | #define NT_PPC_VSX 0x102 /* PowerPC VSX registers */ |
bb61682b | 362 | #define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */ |
325af5fb | 363 | #define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */ |
1da177e4 LT |
364 | |
365 | ||
366 | /* Note header in a PT_NOTE section */ | |
367 | typedef struct elf32_note { | |
368 | Elf32_Word n_namesz; /* Name size */ | |
369 | Elf32_Word n_descsz; /* Content size */ | |
370 | Elf32_Word n_type; /* Content type */ | |
371 | } Elf32_Nhdr; | |
372 | ||
373 | /* Note header in a PT_NOTE section */ | |
374 | typedef struct elf64_note { | |
375 | Elf64_Word n_namesz; /* Name size */ | |
376 | Elf64_Word n_descsz; /* Content size */ | |
377 | Elf64_Word n_type; /* Content type */ | |
378 | } Elf64_Nhdr; | |
379 | ||
f4aa1c30 | 380 | #ifdef __KERNEL__ |
1da177e4 LT |
381 | #if ELF_CLASS == ELFCLASS32 |
382 | ||
383 | extern Elf32_Dyn _DYNAMIC []; | |
384 | #define elfhdr elf32_hdr | |
385 | #define elf_phdr elf32_phdr | |
386 | #define elf_note elf32_note | |
386d9a7e | 387 | #define elf_addr_t Elf32_Off |
1da177e4 LT |
388 | |
389 | #else | |
390 | ||
391 | extern Elf64_Dyn _DYNAMIC []; | |
392 | #define elfhdr elf64_hdr | |
393 | #define elf_phdr elf64_phdr | |
394 | #define elf_note elf64_note | |
386d9a7e | 395 | #define elf_addr_t Elf64_Off |
1da177e4 LT |
396 | |
397 | #endif | |
398 | ||
e5501492 | 399 | /* Optional callbacks to write extra ELF notes. */ |
bf1ab978 | 400 | #ifndef ARCH_HAVE_EXTRA_ELF_NOTES |
e5501492 ME |
401 | static inline int elf_coredump_extra_notes_size(void) { return 0; } |
402 | static inline int elf_coredump_extra_notes_write(struct file *file, | |
403 | loff_t *foffset) { return 0; } | |
404 | #else | |
405 | extern int elf_coredump_extra_notes_size(void); | |
406 | extern int elf_coredump_extra_notes_write(struct file *file, loff_t *foffset); | |
407 | #endif | |
f4aa1c30 | 408 | #endif /* __KERNEL__ */ |
1da177e4 | 409 | #endif /* _LINUX_ELF_H */ |