4 #include <linux/types.h>
5 #include <linux/auxvec.h>
6 #include <linux/elf-em.h>
9 #ifndef elf_read_implies_exec
10 /* Executables for which elf_read_implies_exec() returns TRUE will
11 have the READ_IMPLIES_EXEC personality flag set automatically.
12 Override in asm/elf.h as needed. */
13 # define elf_read_implies_exec(ex, have_pt_gnu_stack) 0
16 /* 32-bit ELF base types. */
17 typedef __u32 Elf32_Addr;
18 typedef __u16 Elf32_Half;
19 typedef __u32 Elf32_Off;
20 typedef __s32 Elf32_Sword;
21 typedef __u32 Elf32_Word;
23 /* 64-bit ELF base types. */
24 typedef __u64 Elf64_Addr;
25 typedef __u16 Elf64_Half;
26 typedef __s16 Elf64_SHalf;
27 typedef __u64 Elf64_Off;
28 typedef __s32 Elf64_Sword;
29 typedef __u32 Elf64_Word;
30 typedef __u64 Elf64_Xword;
31 typedef __s64 Elf64_Sxword;
33 /* These constants are for the segment types stored in the image headers */
41 #define PT_TLS 7 /* Thread local storage segment */
42 #define PT_LOOS 0x60000000 /* OS-specific */
43 #define PT_HIOS 0x6fffffff /* OS-specific */
44 #define PT_LOPROC 0x70000000
45 #define PT_HIPROC 0x7fffffff
46 #define PT_GNU_EH_FRAME 0x6474e550
48 #define PT_GNU_STACK (PT_LOOS + 0x474e551)
50 /* These constants define the different elf file types */
56 #define ET_LOPROC 0xff00
57 #define ET_HIPROC 0xffff
59 /* This is the info that is needed to parse the dynamic section of the file */
76 #define DT_SYMBOLIC 16
84 #define DT_LOPROC 0x70000000
85 #define DT_HIPROC 0x7fffffff
87 /* This info is needed when parsing the symbol table */
100 #define ELF_ST_BIND(x) ((x) >> 4)
101 #define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf)
102 #define ELF32_ST_BIND(x) ELF_ST_BIND(x)
103 #define ELF32_ST_TYPE(x) ELF_ST_TYPE(x)
104 #define ELF64_ST_BIND(x) ELF_ST_BIND(x)
105 #define ELF64_ST_TYPE(x) ELF_ST_TYPE(x)
107 typedef struct dynamic{
116 Elf64_Sxword d_tag; /* entry tag value */
123 /* The following are used with relocations */
124 #define ELF32_R_SYM(x) ((x) >> 8)
125 #define ELF32_R_TYPE(x) ((x) & 0xff)
127 #define ELF64_R_SYM(i) ((i) >> 32)
128 #define ELF64_R_TYPE(i) ((i) & 0xffffffff)
130 typedef struct elf32_rel {
135 typedef struct elf64_rel {
136 Elf64_Addr r_offset; /* Location at which to apply the action */
137 Elf64_Xword r_info; /* index and type of relocation */
140 typedef struct elf32_rela{
143 Elf32_Sword r_addend;
146 typedef struct elf64_rela {
147 Elf64_Addr r_offset; /* Location at which to apply the action */
148 Elf64_Xword r_info; /* index and type of relocation */
149 Elf64_Sxword r_addend; /* Constant addend used to compute value */
152 typedef struct elf32_sym{
156 unsigned char st_info;
157 unsigned char st_other;
161 typedef struct elf64_sym {
162 Elf64_Word st_name; /* Symbol name, index in string tbl */
163 unsigned char st_info; /* Type and binding attributes */
164 unsigned char st_other; /* No defined meaning, 0 */
165 Elf64_Half st_shndx; /* Associated section index */
166 Elf64_Addr st_value; /* Value of the symbol */
167 Elf64_Xword st_size; /* Associated symbol size */
173 typedef struct elf32_hdr{
174 unsigned char e_ident[EI_NIDENT];
176 Elf32_Half e_machine;
177 Elf32_Word e_version;
178 Elf32_Addr e_entry; /* Entry point */
183 Elf32_Half e_phentsize;
185 Elf32_Half e_shentsize;
187 Elf32_Half e_shstrndx;
190 typedef struct elf64_hdr {
191 unsigned char e_ident[16]; /* ELF "magic number" */
193 Elf64_Half e_machine;
194 Elf64_Word e_version;
195 Elf64_Addr e_entry; /* Entry point virtual address */
196 Elf64_Off e_phoff; /* Program header table file offset */
197 Elf64_Off e_shoff; /* Section header table file offset */
200 Elf64_Half e_phentsize;
202 Elf64_Half e_shentsize;
204 Elf64_Half e_shstrndx;
207 /* These constants define the permissions on sections in the program
213 typedef struct elf32_phdr{
224 typedef struct elf64_phdr {
227 Elf64_Off p_offset; /* Segment file offset */
228 Elf64_Addr p_vaddr; /* Segment virtual address */
229 Elf64_Addr p_paddr; /* Segment physical address */
230 Elf64_Xword p_filesz; /* Segment size in file */
231 Elf64_Xword p_memsz; /* Segment size in memory */
232 Elf64_Xword p_align; /* Segment alignment, file & memory */
237 #define SHT_PROGBITS 1
242 #define SHT_DYNAMIC 6
247 #define SHT_DYNSYM 11
249 #define SHT_LOPROC 0x70000000
250 #define SHT_HIPROC 0x7fffffff
251 #define SHT_LOUSER 0x80000000
252 #define SHT_HIUSER 0xffffffff
255 #define SHF_WRITE 0x1
256 #define SHF_ALLOC 0x2
257 #define SHF_EXECINSTR 0x4
258 #define SHF_MASKPROC 0xf0000000
260 /* special section indexes */
262 #define SHN_LORESERVE 0xff00
263 #define SHN_LOPROC 0xff00
264 #define SHN_HIPROC 0xff1f
265 #define SHN_ABS 0xfff1
266 #define SHN_COMMON 0xfff2
267 #define SHN_HIRESERVE 0xffff
278 Elf32_Word sh_addralign;
279 Elf32_Word sh_entsize;
282 typedef struct elf64_shdr {
283 Elf64_Word sh_name; /* Section name, index in string tbl */
284 Elf64_Word sh_type; /* Type of section */
285 Elf64_Xword sh_flags; /* Miscellaneous section attributes */
286 Elf64_Addr sh_addr; /* Section virtual addr at execution */
287 Elf64_Off sh_offset; /* Section file offset */
288 Elf64_Xword sh_size; /* Size of section in bytes */
289 Elf64_Word sh_link; /* Index of another section */
290 Elf64_Word sh_info; /* Additional section information */
291 Elf64_Xword sh_addralign; /* Section alignment */
292 Elf64_Xword sh_entsize; /* Entry size if section holds table */
295 #define EI_MAG0 0 /* e_ident[] indexes */
305 #define ELFMAG0 0x7f /* EI_MAG */
309 #define ELFMAG "\177ELF"
312 #define ELFCLASSNONE 0 /* EI_CLASS */
315 #define ELFCLASSNUM 3
317 #define ELFDATANONE 0 /* e_ident[EI_DATA] */
318 #define ELFDATA2LSB 1
319 #define ELFDATA2MSB 2
321 #define EV_NONE 0 /* e_version, EI_VERSION */
325 #define ELFOSABI_NONE 0
326 #define ELFOSABI_LINUX 3
329 #define ELF_OSABI ELFOSABI_NONE
332 /* Notes used in ET_CORE */
333 #define NT_PRSTATUS 1
335 #define NT_PRPSINFO 3
336 #define NT_TASKSTRUCT 4
338 #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */
341 /* Note header in a PT_NOTE section */
342 typedef struct elf32_note {
343 Elf32_Word n_namesz; /* Name size */
344 Elf32_Word n_descsz; /* Content size */
345 Elf32_Word n_type; /* Content type */
348 /* Note header in a PT_NOTE section */
349 typedef struct elf64_note {
350 Elf64_Word n_namesz; /* Name size */
351 Elf64_Word n_descsz; /* Content size */
352 Elf64_Word n_type; /* Content type */
355 #if ELF_CLASS == ELFCLASS32
357 extern Elf32_Dyn _DYNAMIC [];
358 #define elfhdr elf32_hdr
359 #define elf_phdr elf32_phdr
360 #define elf_note elf32_note
364 extern Elf64_Dyn _DYNAMIC [];
365 #define elfhdr elf64_hdr
366 #define elf_phdr elf64_phdr
367 #define elf_note elf64_note
372 #endif /* _LINUX_ELF_H */