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1#ifndef _UAPI_LINUX_ELF_H
2#define _UAPI_LINUX_ELF_H
3
4#include <linux/types.h>
5#include <linux/elf-em.h>
6
7/* 32-bit ELF base types. */
8typedef __u32 Elf32_Addr;
9typedef __u16 Elf32_Half;
10typedef __u32 Elf32_Off;
11typedef __s32 Elf32_Sword;
12typedef __u32 Elf32_Word;
13
14/* 64-bit ELF base types. */
15typedef __u64 Elf64_Addr;
16typedef __u16 Elf64_Half;
17typedef __s16 Elf64_SHalf;
18typedef __u64 Elf64_Off;
19typedef __s32 Elf64_Sword;
20typedef __u32 Elf64_Word;
21typedef __u64 Elf64_Xword;
22typedef __s64 Elf64_Sxword;
23
24/* These constants are for the segment types stored in the image headers */
25#define PT_NULL 0
26#define PT_LOAD 1
27#define PT_DYNAMIC 2
28#define PT_INTERP 3
29#define PT_NOTE 4
30#define PT_SHLIB 5
31#define PT_PHDR 6
32#define PT_TLS 7 /* Thread local storage segment */
33#define PT_LOOS 0x60000000 /* OS-specific */
34#define PT_HIOS 0x6fffffff /* OS-specific */
35#define PT_LOPROC 0x70000000
36#define PT_HIPROC 0x7fffffff
37#define PT_GNU_EH_FRAME 0x6474e550
38
39#define PT_GNU_STACK (PT_LOOS + 0x474e551)
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40#define PT_GNU_RELRO (PT_LOOS + 0x474e552)
41
42#define PT_PAX_FLAGS (PT_LOOS + 0x5041580)
43
44/* Constants for the e_flags field */
45#define EF_PAX_PAGEEXEC 1 /* Paging based non-executable pages */
46#define EF_PAX_EMUTRAMP 2 /* Emulate trampolines */
47#define EF_PAX_MPROTECT 4 /* Restrict mprotect() */
48#define EF_PAX_RANDMMAP 8 /* Randomize mmap() base */
49/*#define EF_PAX_RANDEXEC 16*/ /* Randomize ET_EXEC base */
50#define EF_PAX_SEGMEXEC 32 /* Segmentation based non-executable pages */
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51
52/*
53 * Extended Numbering
54 *
55 * If the real number of program header table entries is larger than
56 * or equal to PN_XNUM(0xffff), it is set to sh_info field of the
57 * section header at index 0, and PN_XNUM is set to e_phnum
58 * field. Otherwise, the section header at index 0 is zero
59 * initialized, if it exists.
60 *
61 * Specifications are available in:
62 *
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63 * - Oracle: Linker and Libraries.
64 * Part No: 817–1984–19, August 2011.
65 * http://docs.oracle.com/cd/E18752_01/pdf/817-1984.pdf
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66 *
67 * - System V ABI AMD64 Architecture Processor Supplement
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68 * Draft Version 0.99.4,
69 * January 13, 2010.
70 * http://www.cs.washington.edu/education/courses/cse351/12wi/supp-docs/abi.pdf
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71 */
72#define PN_XNUM 0xffff
73
74/* These constants define the different elf file types */
75#define ET_NONE 0
76#define ET_REL 1
77#define ET_EXEC 2
78#define ET_DYN 3
79#define ET_CORE 4
80#define ET_LOPROC 0xff00
81#define ET_HIPROC 0xffff
82
83/* This is the info that is needed to parse the dynamic section of the file */
84#define DT_NULL 0
85#define DT_NEEDED 1
86#define DT_PLTRELSZ 2
87#define DT_PLTGOT 3
88#define DT_HASH 4
89#define DT_STRTAB 5
90#define DT_SYMTAB 6
91#define DT_RELA 7
92#define DT_RELASZ 8
93#define DT_RELAENT 9
94#define DT_STRSZ 10
95#define DT_SYMENT 11
96#define DT_INIT 12
97#define DT_FINI 13
98#define DT_SONAME 14
99#define DT_RPATH 15
100#define DT_SYMBOLIC 16
101#define DT_REL 17
102#define DT_RELSZ 18
103#define DT_RELENT 19
104#define DT_PLTREL 20
105#define DT_DEBUG 21
106#define DT_TEXTREL 22
107#define DT_JMPREL 23
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108#define DT_FLAGS 30
109 #define DF_TEXTREL 0x00000004
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110#define DT_ENCODING 32
111#define OLD_DT_LOOS 0x60000000
112#define DT_LOOS 0x6000000d
113#define DT_HIOS 0x6ffff000
114#define DT_VALRNGLO 0x6ffffd00
115#define DT_VALRNGHI 0x6ffffdff
116#define DT_ADDRRNGLO 0x6ffffe00
117#define DT_ADDRRNGHI 0x6ffffeff
118#define DT_VERSYM 0x6ffffff0
119#define DT_RELACOUNT 0x6ffffff9
120#define DT_RELCOUNT 0x6ffffffa
121#define DT_FLAGS_1 0x6ffffffb
122#define DT_VERDEF 0x6ffffffc
123#define DT_VERDEFNUM 0x6ffffffd
124#define DT_VERNEED 0x6ffffffe
125#define DT_VERNEEDNUM 0x6fffffff
126#define OLD_DT_HIOS 0x6fffffff
127#define DT_LOPROC 0x70000000
128#define DT_HIPROC 0x7fffffff
129
130/* This info is needed when parsing the symbol table */
131#define STB_LOCAL 0
132#define STB_GLOBAL 1
133#define STB_WEAK 2
134
135#define STT_NOTYPE 0
136#define STT_OBJECT 1
137#define STT_FUNC 2
138#define STT_SECTION 3
139#define STT_FILE 4
140#define STT_COMMON 5
141#define STT_TLS 6
142
143#define ELF_ST_BIND(x) ((x) >> 4)
144#define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf)
145#define ELF32_ST_BIND(x) ELF_ST_BIND(x)
146#define ELF32_ST_TYPE(x) ELF_ST_TYPE(x)
147#define ELF64_ST_BIND(x) ELF_ST_BIND(x)
148#define ELF64_ST_TYPE(x) ELF_ST_TYPE(x)
149
150typedef struct dynamic{
151 Elf32_Sword d_tag;
152 union{
153 Elf32_Sword d_val;
154 Elf32_Addr d_ptr;
155 } d_un;
156} Elf32_Dyn;
157
158typedef struct {
159 Elf64_Sxword d_tag; /* entry tag value */
160 union {
161 Elf64_Xword d_val;
162 Elf64_Addr d_ptr;
163 } d_un;
164} Elf64_Dyn;
165
166/* The following are used with relocations */
167#define ELF32_R_SYM(x) ((x) >> 8)
168#define ELF32_R_TYPE(x) ((x) & 0xff)
169
170#define ELF64_R_SYM(i) ((i) >> 32)
171#define ELF64_R_TYPE(i) ((i) & 0xffffffff)
172
173typedef struct elf32_rel {
174 Elf32_Addr r_offset;
175 Elf32_Word r_info;
176} Elf32_Rel;
177
178typedef struct elf64_rel {
179 Elf64_Addr r_offset; /* Location at which to apply the action */
180 Elf64_Xword r_info; /* index and type of relocation */
181} Elf64_Rel;
182
183typedef struct elf32_rela{
184 Elf32_Addr r_offset;
185 Elf32_Word r_info;
186 Elf32_Sword r_addend;
187} Elf32_Rela;
188
189typedef struct elf64_rela {
190 Elf64_Addr r_offset; /* Location at which to apply the action */
191 Elf64_Xword r_info; /* index and type of relocation */
192 Elf64_Sxword r_addend; /* Constant addend used to compute value */
193} Elf64_Rela;
194
195typedef struct elf32_sym{
196 Elf32_Word st_name;
197 Elf32_Addr st_value;
198 Elf32_Word st_size;
199 unsigned char st_info;
200 unsigned char st_other;
201 Elf32_Half st_shndx;
202} Elf32_Sym;
203
204typedef struct elf64_sym {
205 Elf64_Word st_name; /* Symbol name, index in string tbl */
206 unsigned char st_info; /* Type and binding attributes */
207 unsigned char st_other; /* No defined meaning, 0 */
208 Elf64_Half st_shndx; /* Associated section index */
209 Elf64_Addr st_value; /* Value of the symbol */
210 Elf64_Xword st_size; /* Associated symbol size */
211} Elf64_Sym;
212
213
214#define EI_NIDENT 16
215
216typedef struct elf32_hdr{
217 unsigned char e_ident[EI_NIDENT];
218 Elf32_Half e_type;
219 Elf32_Half e_machine;
220 Elf32_Word e_version;
221 Elf32_Addr e_entry; /* Entry point */
222 Elf32_Off e_phoff;
223 Elf32_Off e_shoff;
224 Elf32_Word e_flags;
225 Elf32_Half e_ehsize;
226 Elf32_Half e_phentsize;
227 Elf32_Half e_phnum;
228 Elf32_Half e_shentsize;
229 Elf32_Half e_shnum;
230 Elf32_Half e_shstrndx;
231} Elf32_Ehdr;
232
233typedef struct elf64_hdr {
234 unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */
235 Elf64_Half e_type;
236 Elf64_Half e_machine;
237 Elf64_Word e_version;
238 Elf64_Addr e_entry; /* Entry point virtual address */
239 Elf64_Off e_phoff; /* Program header table file offset */
240 Elf64_Off e_shoff; /* Section header table file offset */
241 Elf64_Word e_flags;
242 Elf64_Half e_ehsize;
243 Elf64_Half e_phentsize;
244 Elf64_Half e_phnum;
245 Elf64_Half e_shentsize;
246 Elf64_Half e_shnum;
247 Elf64_Half e_shstrndx;
248} Elf64_Ehdr;
249
250/* These constants define the permissions on sections in the program
251 header, p_flags. */
252#define PF_R 0x4
253#define PF_W 0x2
254#define PF_X 0x1
255
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256#define PF_PAGEEXEC (1U << 4) /* Enable PAGEEXEC */
257#define PF_NOPAGEEXEC (1U << 5) /* Disable PAGEEXEC */
258#define PF_SEGMEXEC (1U << 6) /* Enable SEGMEXEC */
259#define PF_NOSEGMEXEC (1U << 7) /* Disable SEGMEXEC */
260#define PF_MPROTECT (1U << 8) /* Enable MPROTECT */
261#define PF_NOMPROTECT (1U << 9) /* Disable MPROTECT */
262/*#define PF_RANDEXEC (1U << 10)*/ /* Enable RANDEXEC */
263/*#define PF_NORANDEXEC (1U << 11)*/ /* Disable RANDEXEC */
264#define PF_EMUTRAMP (1U << 12) /* Enable EMUTRAMP */
265#define PF_NOEMUTRAMP (1U << 13) /* Disable EMUTRAMP */
266#define PF_RANDMMAP (1U << 14) /* Enable RANDMMAP */
267#define PF_NORANDMMAP (1U << 15) /* Disable RANDMMAP */
268
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269typedef struct elf32_phdr{
270 Elf32_Word p_type;
271 Elf32_Off p_offset;
272 Elf32_Addr p_vaddr;
273 Elf32_Addr p_paddr;
274 Elf32_Word p_filesz;
275 Elf32_Word p_memsz;
276 Elf32_Word p_flags;
277 Elf32_Word p_align;
278} Elf32_Phdr;
279
280typedef struct elf64_phdr {
281 Elf64_Word p_type;
282 Elf64_Word p_flags;
283 Elf64_Off p_offset; /* Segment file offset */
284 Elf64_Addr p_vaddr; /* Segment virtual address */
285 Elf64_Addr p_paddr; /* Segment physical address */
286 Elf64_Xword p_filesz; /* Segment size in file */
287 Elf64_Xword p_memsz; /* Segment size in memory */
288 Elf64_Xword p_align; /* Segment alignment, file & memory */
289} Elf64_Phdr;
290
291/* sh_type */
292#define SHT_NULL 0
293#define SHT_PROGBITS 1
294#define SHT_SYMTAB 2
295#define SHT_STRTAB 3
296#define SHT_RELA 4
297#define SHT_HASH 5
298#define SHT_DYNAMIC 6
299#define SHT_NOTE 7
300#define SHT_NOBITS 8
301#define SHT_REL 9
302#define SHT_SHLIB 10
303#define SHT_DYNSYM 11
304#define SHT_NUM 12
305#define SHT_LOPROC 0x70000000
306#define SHT_HIPROC 0x7fffffff
307#define SHT_LOUSER 0x80000000
308#define SHT_HIUSER 0xffffffff
309
310/* sh_flags */
311#define SHF_WRITE 0x1
312#define SHF_ALLOC 0x2
313#define SHF_EXECINSTR 0x4
314#define SHF_MASKPROC 0xf0000000
315
316/* special section indexes */
317#define SHN_UNDEF 0
318#define SHN_LORESERVE 0xff00
319#define SHN_LOPROC 0xff00
320#define SHN_HIPROC 0xff1f
321#define SHN_ABS 0xfff1
322#define SHN_COMMON 0xfff2
323#define SHN_HIRESERVE 0xffff
324
325typedef struct elf32_shdr {
326 Elf32_Word sh_name;
327 Elf32_Word sh_type;
328 Elf32_Word sh_flags;
329 Elf32_Addr sh_addr;
330 Elf32_Off sh_offset;
331 Elf32_Word sh_size;
332 Elf32_Word sh_link;
333 Elf32_Word sh_info;
334 Elf32_Word sh_addralign;
335 Elf32_Word sh_entsize;
336} Elf32_Shdr;
337
338typedef struct elf64_shdr {
339 Elf64_Word sh_name; /* Section name, index in string tbl */
340 Elf64_Word sh_type; /* Type of section */
341 Elf64_Xword sh_flags; /* Miscellaneous section attributes */
342 Elf64_Addr sh_addr; /* Section virtual addr at execution */
343 Elf64_Off sh_offset; /* Section file offset */
344 Elf64_Xword sh_size; /* Size of section in bytes */
345 Elf64_Word sh_link; /* Index of another section */
346 Elf64_Word sh_info; /* Additional section information */
347 Elf64_Xword sh_addralign; /* Section alignment */
348 Elf64_Xword sh_entsize; /* Entry size if section holds table */
349} Elf64_Shdr;
350
351#define EI_MAG0 0 /* e_ident[] indexes */
352#define EI_MAG1 1
353#define EI_MAG2 2
354#define EI_MAG3 3
355#define EI_CLASS 4
356#define EI_DATA 5
357#define EI_VERSION 6
358#define EI_OSABI 7
359#define EI_PAD 8
360
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361#define EI_PAX 14
362
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363#define ELFMAG0 0x7f /* EI_MAG */
364#define ELFMAG1 'E'
365#define ELFMAG2 'L'
366#define ELFMAG3 'F'
367#define ELFMAG "\177ELF"
368#define SELFMAG 4
369
370#define ELFCLASSNONE 0 /* EI_CLASS */
371#define ELFCLASS32 1
372#define ELFCLASS64 2
373#define ELFCLASSNUM 3
374
375#define ELFDATANONE 0 /* e_ident[EI_DATA] */
376#define ELFDATA2LSB 1
377#define ELFDATA2MSB 2
378
379#define EV_NONE 0 /* e_version, EI_VERSION */
380#define EV_CURRENT 1
381#define EV_NUM 2
382
383#define ELFOSABI_NONE 0
384#define ELFOSABI_LINUX 3
385
386#ifndef ELF_OSABI
387#define ELF_OSABI ELFOSABI_NONE
388#endif
389
390/*
391 * Notes used in ET_CORE. Architectures export some of the arch register sets
392 * using the corresponding note types via the PTRACE_GETREGSET and
393 * PTRACE_SETREGSET requests.
394 */
395#define NT_PRSTATUS 1
396#define NT_PRFPREG 2
397#define NT_PRPSINFO 3
398#define NT_TASKSTRUCT 4
399#define NT_AUXV 6
400/*
401 * Note to userspace developers: size of NT_SIGINFO note may increase
402 * in the future to accomodate more fields, don't assume it is fixed!
403 */
404#define NT_SIGINFO 0x53494749
405#define NT_FILE 0x46494c45
406#define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */
407#define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */
408#define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */
409#define NT_PPC_VSX 0x102 /* PowerPC VSX registers */
410#define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */
411#define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */
412#define NT_X86_XSTATE 0x202 /* x86 extended state using xsave */
413#define NT_S390_HIGH_GPRS 0x300 /* s390 upper register halves */
414#define NT_S390_TIMER 0x301 /* s390 timer register */
415#define NT_S390_TODCMP 0x302 /* s390 TOD clock comparator register */
416#define NT_S390_TODPREG 0x303 /* s390 TOD programmable register */
417#define NT_S390_CTRS 0x304 /* s390 control registers */
418#define NT_S390_PREFIX 0x305 /* s390 prefix register */
419#define NT_S390_LAST_BREAK 0x306 /* s390 breaking event address */
420#define NT_S390_SYSTEM_CALL 0x307 /* s390 system call restart data */
421#define NT_S390_TDB 0x308 /* s390 transaction diagnostic block */
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422#define NT_S390_VXRS_LOW 0x309 /* s390 vector registers 0-15 upper half */
423#define NT_S390_VXRS_HIGH 0x30a /* s390 vector registers 16-31 */
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424#define NT_ARM_VFP 0x400 /* ARM VFP/NEON registers */
425#define NT_ARM_TLS 0x401 /* ARM TLS register */
426#define NT_ARM_HW_BREAK 0x402 /* ARM hardware breakpoint registers */
427#define NT_ARM_HW_WATCH 0x403 /* ARM hardware watchpoint registers */
766a85d7 428#define NT_ARM_SYSTEM_CALL 0x404 /* ARM system call number */
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429#define NT_METAG_CBUF 0x500 /* Metag catch buffer registers */
430#define NT_METAG_RPIPE 0x501 /* Metag read pipeline state */
876d6dcd 431#define NT_METAG_TLS 0x502 /* Metag TLS pointer */
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432
433
434/* Note header in a PT_NOTE section */
435typedef struct elf32_note {
436 Elf32_Word n_namesz; /* Name size */
437 Elf32_Word n_descsz; /* Content size */
438 Elf32_Word n_type; /* Content type */
439} Elf32_Nhdr;
440
441/* Note header in a PT_NOTE section */
442typedef struct elf64_note {
443 Elf64_Word n_namesz; /* Name size */
444 Elf64_Word n_descsz; /* Content size */
445 Elf64_Word n_type; /* Content type */
446} Elf64_Nhdr;
447
448#endif /* _UAPI_LINUX_ELF_H */