4 #include <linux/types.h>
5 #include <linux/elf-em.h>
10 #ifndef elf_read_implies_exec
11 /* Executables for which elf_read_implies_exec() returns TRUE will
12 have the READ_IMPLIES_EXEC personality flag set automatically.
13 Override in asm/elf.h as needed. */
14 # define elf_read_implies_exec(ex, have_pt_gnu_stack) 0
17 /* 32-bit ELF base types. */
18 typedef __u32 Elf32_Addr;
19 typedef __u16 Elf32_Half;
20 typedef __u32 Elf32_Off;
21 typedef __s32 Elf32_Sword;
22 typedef __u32 Elf32_Word;
24 /* 64-bit ELF base types. */
25 typedef __u64 Elf64_Addr;
26 typedef __u16 Elf64_Half;
27 typedef __s16 Elf64_SHalf;
28 typedef __u64 Elf64_Off;
29 typedef __s32 Elf64_Sword;
30 typedef __u32 Elf64_Word;
31 typedef __u64 Elf64_Xword;
32 typedef __s64 Elf64_Sxword;
34 /* These constants are for the segment types stored in the image headers */
42 #define PT_TLS 7 /* Thread local storage segment */
43 #define PT_LOOS 0x60000000 /* OS-specific */
44 #define PT_HIOS 0x6fffffff /* OS-specific */
45 #define PT_LOPROC 0x70000000
46 #define PT_HIPROC 0x7fffffff
47 #define PT_GNU_EH_FRAME 0x6474e550
49 #define PT_GNU_STACK (PT_LOOS + 0x474e551)
51 /* These constants define the different elf file types */
57 #define ET_LOPROC 0xff00
58 #define ET_HIPROC 0xffff
60 /* This is the info that is needed to parse the dynamic section of the file */
77 #define DT_SYMBOLIC 16
85 #define DT_ENCODING 32
86 #define OLD_DT_LOOS 0x60000000
87 #define DT_LOOS 0x6000000d
88 #define DT_HIOS 0x6ffff000
89 #define DT_VALRNGLO 0x6ffffd00
90 #define DT_VALRNGHI 0x6ffffdff
91 #define DT_ADDRRNGLO 0x6ffffe00
92 #define DT_ADDRRNGHI 0x6ffffeff
93 #define DT_VERSYM 0x6ffffff0
94 #define DT_RELACOUNT 0x6ffffff9
95 #define DT_RELCOUNT 0x6ffffffa
96 #define DT_FLAGS_1 0x6ffffffb
97 #define DT_VERDEF 0x6ffffffc
98 #define DT_VERDEFNUM 0x6ffffffd
99 #define DT_VERNEED 0x6ffffffe
100 #define DT_VERNEEDNUM 0x6fffffff
101 #define OLD_DT_HIOS 0x6fffffff
102 #define DT_LOPROC 0x70000000
103 #define DT_HIPROC 0x7fffffff
105 /* This info is needed when parsing the symbol table */
113 #define STT_SECTION 3
118 #define ELF_ST_BIND(x) ((x) >> 4)
119 #define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf)
120 #define ELF32_ST_BIND(x) ELF_ST_BIND(x)
121 #define ELF32_ST_TYPE(x) ELF_ST_TYPE(x)
122 #define ELF64_ST_BIND(x) ELF_ST_BIND(x)
123 #define ELF64_ST_TYPE(x) ELF_ST_TYPE(x)
125 typedef struct dynamic{
134 Elf64_Sxword d_tag; /* entry tag value */
141 /* The following are used with relocations */
142 #define ELF32_R_SYM(x) ((x) >> 8)
143 #define ELF32_R_TYPE(x) ((x) & 0xff)
145 #define ELF64_R_SYM(i) ((i) >> 32)
146 #define ELF64_R_TYPE(i) ((i) & 0xffffffff)
148 typedef struct elf32_rel {
153 typedef struct elf64_rel {
154 Elf64_Addr r_offset; /* Location at which to apply the action */
155 Elf64_Xword r_info; /* index and type of relocation */
158 typedef struct elf32_rela{
161 Elf32_Sword r_addend;
164 typedef struct elf64_rela {
165 Elf64_Addr r_offset; /* Location at which to apply the action */
166 Elf64_Xword r_info; /* index and type of relocation */
167 Elf64_Sxword r_addend; /* Constant addend used to compute value */
170 typedef struct elf32_sym{
174 unsigned char st_info;
175 unsigned char st_other;
179 typedef struct elf64_sym {
180 Elf64_Word st_name; /* Symbol name, index in string tbl */
181 unsigned char st_info; /* Type and binding attributes */
182 unsigned char st_other; /* No defined meaning, 0 */
183 Elf64_Half st_shndx; /* Associated section index */
184 Elf64_Addr st_value; /* Value of the symbol */
185 Elf64_Xword st_size; /* Associated symbol size */
191 typedef struct elf32_hdr{
192 unsigned char e_ident[EI_NIDENT];
194 Elf32_Half e_machine;
195 Elf32_Word e_version;
196 Elf32_Addr e_entry; /* Entry point */
201 Elf32_Half e_phentsize;
203 Elf32_Half e_shentsize;
205 Elf32_Half e_shstrndx;
208 typedef struct elf64_hdr {
209 unsigned char e_ident[16]; /* ELF "magic number" */
211 Elf64_Half e_machine;
212 Elf64_Word e_version;
213 Elf64_Addr e_entry; /* Entry point virtual address */
214 Elf64_Off e_phoff; /* Program header table file offset */
215 Elf64_Off e_shoff; /* Section header table file offset */
218 Elf64_Half e_phentsize;
220 Elf64_Half e_shentsize;
222 Elf64_Half e_shstrndx;
225 /* These constants define the permissions on sections in the program
231 typedef struct elf32_phdr{
242 typedef struct elf64_phdr {
245 Elf64_Off p_offset; /* Segment file offset */
246 Elf64_Addr p_vaddr; /* Segment virtual address */
247 Elf64_Addr p_paddr; /* Segment physical address */
248 Elf64_Xword p_filesz; /* Segment size in file */
249 Elf64_Xword p_memsz; /* Segment size in memory */
250 Elf64_Xword p_align; /* Segment alignment, file & memory */
255 #define SHT_PROGBITS 1
260 #define SHT_DYNAMIC 6
265 #define SHT_DYNSYM 11
267 #define SHT_LOPROC 0x70000000
268 #define SHT_HIPROC 0x7fffffff
269 #define SHT_LOUSER 0x80000000
270 #define SHT_HIUSER 0xffffffff
273 #define SHF_WRITE 0x1
274 #define SHF_ALLOC 0x2
275 #define SHF_EXECINSTR 0x4
276 #define SHF_MASKPROC 0xf0000000
278 /* special section indexes */
280 #define SHN_LORESERVE 0xff00
281 #define SHN_LOPROC 0xff00
282 #define SHN_HIPROC 0xff1f
283 #define SHN_ABS 0xfff1
284 #define SHN_COMMON 0xfff2
285 #define SHN_HIRESERVE 0xffff
296 Elf32_Word sh_addralign;
297 Elf32_Word sh_entsize;
300 typedef struct elf64_shdr {
301 Elf64_Word sh_name; /* Section name, index in string tbl */
302 Elf64_Word sh_type; /* Type of section */
303 Elf64_Xword sh_flags; /* Miscellaneous section attributes */
304 Elf64_Addr sh_addr; /* Section virtual addr at execution */
305 Elf64_Off sh_offset; /* Section file offset */
306 Elf64_Xword sh_size; /* Size of section in bytes */
307 Elf64_Word sh_link; /* Index of another section */
308 Elf64_Word sh_info; /* Additional section information */
309 Elf64_Xword sh_addralign; /* Section alignment */
310 Elf64_Xword sh_entsize; /* Entry size if section holds table */
313 #define EI_MAG0 0 /* e_ident[] indexes */
323 #define ELFMAG0 0x7f /* EI_MAG */
327 #define ELFMAG "\177ELF"
330 #define ELFCLASSNONE 0 /* EI_CLASS */
333 #define ELFCLASSNUM 3
335 #define ELFDATANONE 0 /* e_ident[EI_DATA] */
336 #define ELFDATA2LSB 1
337 #define ELFDATA2MSB 2
339 #define EV_NONE 0 /* e_version, EI_VERSION */
343 #define ELFOSABI_NONE 0
344 #define ELFOSABI_LINUX 3
347 #define ELF_OSABI ELFOSABI_NONE
350 /* Notes used in ET_CORE */
351 #define NT_PRSTATUS 1
353 #define NT_PRPSINFO 3
354 #define NT_TASKSTRUCT 4
356 #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */
357 #define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */
358 #define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */
361 /* Note header in a PT_NOTE section */
362 typedef struct elf32_note {
363 Elf32_Word n_namesz; /* Name size */
364 Elf32_Word n_descsz; /* Content size */
365 Elf32_Word n_type; /* Content type */
368 /* Note header in a PT_NOTE section */
369 typedef struct elf64_note {
370 Elf64_Word n_namesz; /* Name size */
371 Elf64_Word n_descsz; /* Content size */
372 Elf64_Word n_type; /* Content type */
375 #if ELF_CLASS == ELFCLASS32
377 extern Elf32_Dyn _DYNAMIC [];
378 #define elfhdr elf32_hdr
379 #define elf_phdr elf32_phdr
380 #define elf_note elf32_note
381 #define elf_addr_t Elf32_Off
385 extern Elf64_Dyn _DYNAMIC [];
386 #define elfhdr elf64_hdr
387 #define elf_phdr elf64_phdr
388 #define elf_note elf64_note
389 #define elf_addr_t Elf64_Off
393 /* Optional callbacks to write extra ELF notes. */
394 #ifndef ARCH_HAVE_EXTRA_ELF_NOTES
395 static inline int elf_coredump_extra_notes_size(void) { return 0; }
396 static inline int elf_coredump_extra_notes_write(struct file *file,
397 loff_t *foffset) { return 0; }
399 extern int elf_coredump_extra_notes_size(void);
400 extern int elf_coredump_extra_notes_write(struct file *file, loff_t *foffset);
403 #endif /* _LINUX_ELF_H */