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TOMOYO Linux Cross Reference
Linux/include/uapi/linux/elf.h

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

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