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1 | #ifndef _LINUX_ELF_H |
2 | #define _LINUX_ELF_H |
3 | |
4 | #include <linux/types.h> |
5 | #include <linux/elf-em.h> |
6 | #ifdef __KERNEL__ |
7 | #include <asm/elf.h> |
8 | #endif |
9 | |
10 | struct file; |
11 | |
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 | /* |
54 | * Extended Numbering |
55 | * |
56 | * If the real number of program header table entries is larger than |
57 | * or equal to PN_XNUM(0xffff), it is set to sh_info field of the |
58 | * section header at index 0, and PN_XNUM is set to e_phnum |
59 | * field. Otherwise, the section header at index 0 is zero |
60 | * initialized, if it exists. |
61 | * |
62 | * Specifications are available in: |
63 | * |
64 | * - Sun microsystems: Linker and Libraries. |
65 | * Part No: 817-1984-17, September 2008. |
66 | * URL: http://docs.sun.com/app/docs/doc/817-1984 |
67 | * |
68 | * - System V ABI AMD64 Architecture Processor Supplement |
69 | * Draft Version 0.99., |
70 | * May 11, 2009. |
71 | * URL: http://www.x86-64.org/ |
72 | */ |
73 | #define PN_XNUM 0xffff |
74 | |
75 | /* These constants define the different elf file types */ |
76 | #define ET_NONE 0 |
77 | #define ET_REL 1 |
78 | #define ET_EXEC 2 |
79 | #define ET_DYN 3 |
80 | #define ET_CORE 4 |
81 | #define ET_LOPROC 0xff00 |
82 | #define ET_HIPROC 0xffff |
83 | |
84 | /* This is the info that is needed to parse the dynamic section of the file */ |
85 | #define DT_NULL 0 |
86 | #define DT_NEEDED 1 |
87 | #define DT_PLTRELSZ 2 |
88 | #define DT_PLTGOT 3 |
89 | #define DT_HASH 4 |
90 | #define DT_STRTAB 5 |
91 | #define DT_SYMTAB 6 |
92 | #define DT_RELA 7 |
93 | #define DT_RELASZ 8 |
94 | #define DT_RELAENT 9 |
95 | #define DT_STRSZ 10 |
96 | #define DT_SYMENT 11 |
97 | #define DT_INIT 12 |
98 | #define DT_FINI 13 |
99 | #define DT_SONAME 14 |
100 | #define DT_RPATH 15 |
101 | #define DT_SYMBOLIC 16 |
102 | #define DT_REL 17 |
103 | #define DT_RELSZ 18 |
104 | #define DT_RELENT 19 |
105 | #define DT_PLTREL 20 |
106 | #define DT_DEBUG 21 |
107 | #define DT_TEXTREL 22 |
108 | #define DT_JMPREL 23 |
109 | #define DT_ENCODING 32 |
110 | #define OLD_DT_LOOS 0x60000000 |
111 | #define DT_LOOS 0x6000000d |
112 | #define DT_HIOS 0x6ffff000 |
113 | #define DT_VALRNGLO 0x6ffffd00 |
114 | #define DT_VALRNGHI 0x6ffffdff |
115 | #define DT_ADDRRNGLO 0x6ffffe00 |
116 | #define DT_ADDRRNGHI 0x6ffffeff |
117 | #define DT_VERSYM 0x6ffffff0 |
118 | #define DT_RELACOUNT 0x6ffffff9 |
119 | #define DT_RELCOUNT 0x6ffffffa |
120 | #define DT_FLAGS_1 0x6ffffffb |
121 | #define DT_VERDEF 0x6ffffffc |
122 | #define DT_VERDEFNUM 0x6ffffffd |
123 | #define DT_VERNEED 0x6ffffffe |
124 | #define DT_VERNEEDNUM 0x6fffffff |
125 | #define OLD_DT_HIOS 0x6fffffff |
126 | #define DT_LOPROC 0x70000000 |
127 | #define DT_HIPROC 0x7fffffff |
128 | |
129 | /* This info is needed when parsing the symbol table */ |
130 | #define STB_LOCAL 0 |
131 | #define STB_GLOBAL 1 |
132 | #define STB_WEAK 2 |
133 | |
134 | #define STT_NOTYPE 0 |
135 | #define STT_OBJECT 1 |
136 | #define STT_FUNC 2 |
137 | #define STT_SECTION 3 |
138 | #define STT_FILE 4 |
139 | #define STT_COMMON 5 |
140 | #define STT_TLS 6 |
141 | |
142 | #define ELF_ST_BIND(x) ((x) >> 4) |
143 | #define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf) |
144 | #define ELF32_ST_BIND(x) ELF_ST_BIND(x) |
145 | #define ELF32_ST_TYPE(x) ELF_ST_TYPE(x) |
146 | #define ELF64_ST_BIND(x) ELF_ST_BIND(x) |
147 | #define ELF64_ST_TYPE(x) ELF_ST_TYPE(x) |
148 | |
149 | typedef struct dynamic{ |
150 | Elf32_Sword d_tag; |
151 | union{ |
152 | Elf32_Sword d_val; |
153 | Elf32_Addr d_ptr; |
154 | } d_un; |
155 | } Elf32_Dyn; |
156 | |
157 | typedef struct { |
158 | Elf64_Sxword d_tag; /* entry tag value */ |
159 | union { |
160 | Elf64_Xword d_val; |
161 | Elf64_Addr d_ptr; |
162 | } d_un; |
163 | } Elf64_Dyn; |
164 | |
165 | /* The following are used with relocations */ |
166 | #define ELF32_R_SYM(x) ((x) >> 8) |
167 | #define ELF32_R_TYPE(x) ((x) & 0xff) |
168 | |
169 | #define ELF64_R_SYM(i) ((i) >> 32) |
170 | #define ELF64_R_TYPE(i) ((i) & 0xffffffff) |
171 | |
172 | typedef struct elf32_rel { |
173 | Elf32_Addr r_offset; |
174 | Elf32_Word r_info; |
175 | } Elf32_Rel; |
176 | |
177 | typedef struct elf64_rel { |
178 | Elf64_Addr r_offset; /* Location at which to apply the action */ |
179 | Elf64_Xword r_info; /* index and type of relocation */ |
180 | } Elf64_Rel; |
181 | |
182 | typedef struct elf32_rela{ |
183 | Elf32_Addr r_offset; |
184 | Elf32_Word r_info; |
185 | Elf32_Sword r_addend; |
186 | } Elf32_Rela; |
187 | |
188 | typedef struct elf64_rela { |
189 | Elf64_Addr r_offset; /* Location at which to apply the action */ |
190 | Elf64_Xword r_info; /* index and type of relocation */ |
191 | Elf64_Sxword r_addend; /* Constant addend used to compute value */ |
192 | } Elf64_Rela; |
193 | |
194 | typedef struct elf32_sym{ |
195 | Elf32_Word st_name; |
196 | Elf32_Addr st_value; |
197 | Elf32_Word st_size; |
198 | unsigned char st_info; |
199 | unsigned char st_other; |
200 | Elf32_Half st_shndx; |
201 | } Elf32_Sym; |
202 | |
203 | typedef struct elf64_sym { |
204 | Elf64_Word st_name; /* Symbol name, index in string tbl */ |
205 | unsigned char st_info; /* Type and binding attributes */ |
206 | unsigned char st_other; /* No defined meaning, 0 */ |
207 | Elf64_Half st_shndx; /* Associated section index */ |
208 | Elf64_Addr st_value; /* Value of the symbol */ |
209 | Elf64_Xword st_size; /* Associated symbol size */ |
210 | } Elf64_Sym; |
211 | |
212 | |
213 | #define EI_NIDENT 16 |
214 | |
215 | typedef struct elf32_hdr{ |
216 | unsigned char e_ident[EI_NIDENT]; |
217 | Elf32_Half e_type; |
218 | Elf32_Half e_machine; |
219 | Elf32_Word e_version; |
220 | Elf32_Addr e_entry; /* Entry point */ |
221 | Elf32_Off e_phoff; |
222 | Elf32_Off e_shoff; |
223 | Elf32_Word e_flags; |
224 | Elf32_Half e_ehsize; |
225 | Elf32_Half e_phentsize; |
226 | Elf32_Half e_phnum; |
227 | Elf32_Half e_shentsize; |
228 | Elf32_Half e_shnum; |
229 | Elf32_Half e_shstrndx; |
230 | } Elf32_Ehdr; |
231 | |
232 | typedef struct elf64_hdr { |
233 | unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */ |
234 | Elf64_Half e_type; |
235 | Elf64_Half e_machine; |
236 | Elf64_Word e_version; |
237 | Elf64_Addr e_entry; /* Entry point virtual address */ |
238 | Elf64_Off e_phoff; /* Program header table file offset */ |
239 | Elf64_Off e_shoff; /* Section header table file offset */ |
240 | Elf64_Word e_flags; |
241 | Elf64_Half e_ehsize; |
242 | Elf64_Half e_phentsize; |
243 | Elf64_Half e_phnum; |
244 | Elf64_Half e_shentsize; |
245 | Elf64_Half e_shnum; |
246 | Elf64_Half e_shstrndx; |
247 | } Elf64_Ehdr; |
248 | |
249 | /* These constants define the permissions on sections in the program |
250 | header, p_flags. */ |
251 | #define PF_R 0x4 |
252 | #define PF_W 0x2 |
253 | #define PF_X 0x1 |
254 | |
255 | typedef struct elf32_phdr{ |
256 | Elf32_Word p_type; |
257 | Elf32_Off p_offset; |
258 | Elf32_Addr p_vaddr; |
259 | Elf32_Addr p_paddr; |
260 | Elf32_Word p_filesz; |
261 | Elf32_Word p_memsz; |
262 | Elf32_Word p_flags; |
263 | Elf32_Word p_align; |
264 | } Elf32_Phdr; |
265 | |
266 | typedef struct elf64_phdr { |
267 | Elf64_Word p_type; |
268 | Elf64_Word p_flags; |
269 | Elf64_Off p_offset; /* Segment file offset */ |
270 | Elf64_Addr p_vaddr; /* Segment virtual address */ |
271 | Elf64_Addr p_paddr; /* Segment physical address */ |
272 | Elf64_Xword p_filesz; /* Segment size in file */ |
273 | Elf64_Xword p_memsz; /* Segment size in memory */ |
274 | Elf64_Xword p_align; /* Segment alignment, file & memory */ |
275 | } Elf64_Phdr; |
276 | |
277 | /* sh_type */ |
278 | #define SHT_NULL 0 |
279 | #define SHT_PROGBITS 1 |
280 | #define SHT_SYMTAB 2 |
281 | #define SHT_STRTAB 3 |
282 | #define SHT_RELA 4 |
283 | #define SHT_HASH 5 |
284 | #define SHT_DYNAMIC 6 |
285 | #define SHT_NOTE 7 |
286 | #define SHT_NOBITS 8 |
287 | #define SHT_REL 9 |
288 | #define SHT_SHLIB 10 |
289 | #define SHT_DYNSYM 11 |
290 | #define SHT_NUM 12 |
291 | #define SHT_LOPROC 0x70000000 |
292 | #define SHT_HIPROC 0x7fffffff |
293 | #define SHT_LOUSER 0x80000000 |
294 | #define SHT_HIUSER 0xffffffff |
295 | |
296 | /* sh_flags */ |
297 | #define SHF_WRITE 0x1 |
298 | #define SHF_ALLOC 0x2 |
299 | #define SHF_EXECINSTR 0x4 |
300 | #define SHF_MASKPROC 0xf0000000 |
301 | |
302 | /* special section indexes */ |
303 | #define SHN_UNDEF 0 |
304 | #define SHN_LORESERVE 0xff00 |
305 | #define SHN_LOPROC 0xff00 |
306 | #define SHN_HIPROC 0xff1f |
307 | #define SHN_ABS 0xfff1 |
308 | #define SHN_COMMON 0xfff2 |
309 | #define SHN_HIRESERVE 0xffff |
310 | |
311 | typedef struct elf32_shdr { |
312 | Elf32_Word sh_name; |
313 | Elf32_Word sh_type; |
314 | Elf32_Word sh_flags; |
315 | Elf32_Addr sh_addr; |
316 | Elf32_Off sh_offset; |
317 | Elf32_Word sh_size; |
318 | Elf32_Word sh_link; |
319 | Elf32_Word sh_info; |
320 | Elf32_Word sh_addralign; |
321 | Elf32_Word sh_entsize; |
322 | } Elf32_Shdr; |
323 | |
324 | typedef struct elf64_shdr { |
325 | Elf64_Word sh_name; /* Section name, index in string tbl */ |
326 | Elf64_Word sh_type; /* Type of section */ |
327 | Elf64_Xword sh_flags; /* Miscellaneous section attributes */ |
328 | Elf64_Addr sh_addr; /* Section virtual addr at execution */ |
329 | Elf64_Off sh_offset; /* Section file offset */ |
330 | Elf64_Xword sh_size; /* Size of section in bytes */ |
331 | Elf64_Word sh_link; /* Index of another section */ |
332 | Elf64_Word sh_info; /* Additional section information */ |
333 | Elf64_Xword sh_addralign; /* Section alignment */ |
334 | Elf64_Xword sh_entsize; /* Entry size if section holds table */ |
335 | } Elf64_Shdr; |
336 | |
337 | #define EI_MAG0 0 /* e_ident[] indexes */ |
338 | #define EI_MAG1 1 |
339 | #define EI_MAG2 2 |
340 | #define EI_MAG3 3 |
341 | #define EI_CLASS 4 |
342 | #define EI_DATA 5 |
343 | #define EI_VERSION 6 |
344 | #define EI_OSABI 7 |
345 | #define EI_PAD 8 |
346 | |
347 | #define ELFMAG0 0x7f /* EI_MAG */ |
348 | #define ELFMAG1 'E' |
349 | #define ELFMAG2 'L' |
350 | #define ELFMAG3 'F' |
351 | #define ELFMAG "\177ELF" |
352 | #define SELFMAG 4 |
353 | |
354 | #define ELFCLASSNONE 0 /* EI_CLASS */ |
355 | #define ELFCLASS32 1 |
356 | #define ELFCLASS64 2 |
357 | #define ELFCLASSNUM 3 |
358 | |
359 | #define ELFDATANONE 0 /* e_ident[EI_DATA] */ |
360 | #define ELFDATA2LSB 1 |
361 | #define ELFDATA2MSB 2 |
362 | |
363 | #define EV_NONE 0 /* e_version, EI_VERSION */ |
364 | #define EV_CURRENT 1 |
365 | #define EV_NUM 2 |
366 | |
367 | #define ELFOSABI_NONE 0 |
368 | #define ELFOSABI_LINUX 3 |
369 | |
370 | #ifndef ELF_OSABI |
371 | #define ELF_OSABI ELFOSABI_NONE |
372 | #endif |
373 | |
374 | /* |
375 | * Notes used in ET_CORE. Architectures export some of the arch register sets |
376 | * using the corresponding note types via the PTRACE_GETREGSET and |
377 | * PTRACE_SETREGSET requests. |
378 | */ |
379 | #define NT_PRSTATUS 1 |
380 | #define NT_PRFPREG 2 |
381 | #define NT_PRPSINFO 3 |
382 | #define NT_TASKSTRUCT 4 |
383 | #define NT_AUXV 6 |
384 | #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ |
385 | #define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */ |
386 | #define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */ |
387 | #define NT_PPC_VSX 0x102 /* PowerPC VSX registers */ |
388 | #define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */ |
389 | #define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */ |
390 | #define NT_X86_XSTATE 0x202 /* x86 extended state using xsave */ |
391 | #define NT_S390_HIGH_GPRS 0x300 /* s390 upper register halves */ |
392 | #define NT_S390_TIMER 0x301 /* s390 timer register */ |
393 | #define NT_S390_TODCMP 0x302 /* s390 TOD clock comparator register */ |
394 | #define NT_S390_TODPREG 0x303 /* s390 TOD programmable register */ |
395 | #define NT_S390_CTRS 0x304 /* s390 control registers */ |
396 | #define NT_S390_PREFIX 0x305 /* s390 prefix register */ |
397 | #define NT_S390_LAST_BREAK 0x306 /* s390 breaking event address */ |
398 | #define NT_ARM_VFP 0x400 /* ARM VFP/NEON registers */ |
399 | |
400 | |
401 | /* Note header in a PT_NOTE section */ |
402 | typedef struct elf32_note { |
403 | Elf32_Word n_namesz; /* Name size */ |
404 | Elf32_Word n_descsz; /* Content size */ |
405 | Elf32_Word n_type; /* Content type */ |
406 | } Elf32_Nhdr; |
407 | |
408 | /* Note header in a PT_NOTE section */ |
409 | typedef struct elf64_note { |
410 | Elf64_Word n_namesz; /* Name size */ |
411 | Elf64_Word n_descsz; /* Content size */ |
412 | Elf64_Word n_type; /* Content type */ |
413 | } Elf64_Nhdr; |
414 | |
415 | #ifdef __KERNEL__ |
416 | #if ELF_CLASS == ELFCLASS32 |
417 | |
418 | extern Elf32_Dyn _DYNAMIC []; |
419 | #define elfhdr elf32_hdr |
420 | #define elf_phdr elf32_phdr |
421 | #define elf_shdr elf32_shdr |
422 | #define elf_note elf32_note |
423 | #define elf_addr_t Elf32_Off |
424 | #define Elf_Half Elf32_Half |
425 | |
426 | #else |
427 | |
428 | extern Elf64_Dyn _DYNAMIC []; |
429 | #define elfhdr elf64_hdr |
430 | #define elf_phdr elf64_phdr |
431 | #define elf_shdr elf64_shdr |
432 | #define elf_note elf64_note |
433 | #define elf_addr_t Elf64_Off |
434 | #define Elf_Half Elf64_Half |
435 | |
436 | #endif |
437 | |
438 | /* Optional callbacks to write extra ELF notes. */ |
439 | #ifndef ARCH_HAVE_EXTRA_ELF_NOTES |
440 | static inline int elf_coredump_extra_notes_size(void) { return 0; } |
441 | static inline int elf_coredump_extra_notes_write(struct file *file, |
442 | loff_t *foffset) { return 0; } |
443 | #else |
444 | extern int elf_coredump_extra_notes_size(void); |
445 | extern int elf_coredump_extra_notes_write(struct file *file, loff_t *foffset); |
446 | #endif |
447 | #endif /* __KERNEL__ */ |
448 | #endif /* _LINUX_ELF_H */ |
449 |
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