4 #include <linux/types.h>
5 #include <linux/elf-em.h>
10 /* 32-bit ELF base types. */
11 typedef __u32 Elf32_Addr;
12 typedef __u16 Elf32_Half;
13 typedef __u32 Elf32_Off;
14 typedef __s32 Elf32_Sword;
15 typedef __u32 Elf32_Word;
17 /* 64-bit ELF base types. */
18 typedef __u64 Elf64_Addr;
19 typedef __u16 Elf64_Half;
20 typedef __s16 Elf64_SHalf;
21 typedef __u64 Elf64_Off;
22 typedef __s32 Elf64_Sword;
23 typedef __u32 Elf64_Word;
24 typedef __u64 Elf64_Xword;
25 typedef __s64 Elf64_Sxword;
27 /* These constants are for the segment types stored in the image headers */
35 #define PT_TLS 7 /* Thread local storage segment */
36 #define PT_LOOS 0x60000000 /* OS-specific */
37 #define PT_HIOS 0x6fffffff /* OS-specific */
38 #define PT_LOPROC 0x70000000
39 #define PT_HIPROC 0x7fffffff
40 #define PT_GNU_EH_FRAME 0x6474e550
42 #define PT_GNU_STACK (PT_LOOS + 0x474e551)
47 * If the real number of program header table entries is larger than
48 * or equal to PN_XNUM(0xffff), it is set to sh_info field of the
49 * section header at index 0, and PN_XNUM is set to e_phnum
50 * field. Otherwise, the section header at index 0 is zero
51 * initialized, if it exists.
53 * Specifications are available in:
55 * - Sun microsystems: Linker and Libraries.
56 * Part No: 817-1984-17, September 2008.
57 * URL: http://docs.sun.com/app/docs/doc/817-1984
59 * - System V ABI AMD64 Architecture Processor Supplement
60 * Draft Version 0.99.,
62 * URL: http://www.x86-64.org/
64 #define PN_XNUM 0xffff
66 /* These constants define the different elf file types */
72 #define ET_LOPROC 0xff00
73 #define ET_HIPROC 0xffff
75 /* This is the info that is needed to parse the dynamic section of the file */
92 #define DT_SYMBOLIC 16
100 #define DT_ENCODING 32
101 #define OLD_DT_LOOS 0x60000000
102 #define DT_LOOS 0x6000000d
103 #define DT_HIOS 0x6ffff000
104 #define DT_VALRNGLO 0x6ffffd00
105 #define DT_VALRNGHI 0x6ffffdff
106 #define DT_ADDRRNGLO 0x6ffffe00
107 #define DT_ADDRRNGHI 0x6ffffeff
108 #define DT_VERSYM 0x6ffffff0
109 #define DT_RELACOUNT 0x6ffffff9
110 #define DT_RELCOUNT 0x6ffffffa
111 #define DT_FLAGS_1 0x6ffffffb
112 #define DT_VERDEF 0x6ffffffc
113 #define DT_VERDEFNUM 0x6ffffffd
114 #define DT_VERNEED 0x6ffffffe
115 #define DT_VERNEEDNUM 0x6fffffff
116 #define OLD_DT_HIOS 0x6fffffff
117 #define DT_LOPROC 0x70000000
118 #define DT_HIPROC 0x7fffffff
120 /* This info is needed when parsing the symbol table */
128 #define STT_SECTION 3
133 #define ELF_ST_BIND(x) ((x) >> 4)
134 #define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf)
135 #define ELF32_ST_BIND(x) ELF_ST_BIND(x)
136 #define ELF32_ST_TYPE(x) ELF_ST_TYPE(x)
137 #define ELF64_ST_BIND(x) ELF_ST_BIND(x)
138 #define ELF64_ST_TYPE(x) ELF_ST_TYPE(x)
140 typedef struct dynamic{
149 Elf64_Sxword d_tag; /* entry tag value */
156 /* The following are used with relocations */
157 #define ELF32_R_SYM(x) ((x) >> 8)
158 #define ELF32_R_TYPE(x) ((x) & 0xff)
160 #define ELF64_R_SYM(i) ((i) >> 32)
161 #define ELF64_R_TYPE(i) ((i) & 0xffffffff)
163 typedef struct elf32_rel {
168 typedef struct elf64_rel {
169 Elf64_Addr r_offset; /* Location at which to apply the action */
170 Elf64_Xword r_info; /* index and type of relocation */
173 typedef struct elf32_rela{
176 Elf32_Sword r_addend;
179 typedef struct elf64_rela {
180 Elf64_Addr r_offset; /* Location at which to apply the action */
181 Elf64_Xword r_info; /* index and type of relocation */
182 Elf64_Sxword r_addend; /* Constant addend used to compute value */
185 typedef struct elf32_sym{
189 unsigned char st_info;
190 unsigned char st_other;
194 typedef struct elf64_sym {
195 Elf64_Word st_name; /* Symbol name, index in string tbl */
196 unsigned char st_info; /* Type and binding attributes */
197 unsigned char st_other; /* No defined meaning, 0 */
198 Elf64_Half st_shndx; /* Associated section index */
199 Elf64_Addr st_value; /* Value of the symbol */
200 Elf64_Xword st_size; /* Associated symbol size */
206 typedef struct elf32_hdr{
207 unsigned char e_ident[EI_NIDENT];
209 Elf32_Half e_machine;
210 Elf32_Word e_version;
211 Elf32_Addr e_entry; /* Entry point */
216 Elf32_Half e_phentsize;
218 Elf32_Half e_shentsize;
220 Elf32_Half e_shstrndx;
223 typedef struct elf64_hdr {
224 unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */
226 Elf64_Half e_machine;
227 Elf64_Word e_version;
228 Elf64_Addr e_entry; /* Entry point virtual address */
229 Elf64_Off e_phoff; /* Program header table file offset */
230 Elf64_Off e_shoff; /* Section header table file offset */
233 Elf64_Half e_phentsize;
235 Elf64_Half e_shentsize;
237 Elf64_Half e_shstrndx;
240 /* These constants define the permissions on sections in the program
246 typedef struct elf32_phdr{
257 typedef struct elf64_phdr {
260 Elf64_Off p_offset; /* Segment file offset */
261 Elf64_Addr p_vaddr; /* Segment virtual address */
262 Elf64_Addr p_paddr; /* Segment physical address */
263 Elf64_Xword p_filesz; /* Segment size in file */
264 Elf64_Xword p_memsz; /* Segment size in memory */
265 Elf64_Xword p_align; /* Segment alignment, file & memory */
270 #define SHT_PROGBITS 1
275 #define SHT_DYNAMIC 6
280 #define SHT_DYNSYM 11
282 #define SHT_LOPROC 0x70000000
283 #define SHT_HIPROC 0x7fffffff
284 #define SHT_LOUSER 0x80000000
285 #define SHT_HIUSER 0xffffffff
288 #define SHF_WRITE 0x1
289 #define SHF_ALLOC 0x2
290 #define SHF_EXECINSTR 0x4
291 #define SHF_MASKPROC 0xf0000000
293 /* special section indexes */
295 #define SHN_LORESERVE 0xff00
296 #define SHN_LOPROC 0xff00
297 #define SHN_HIPROC 0xff1f
298 #define SHN_ABS 0xfff1
299 #define SHN_COMMON 0xfff2
300 #define SHN_HIRESERVE 0xffff
302 typedef struct elf32_shdr {
311 Elf32_Word sh_addralign;
312 Elf32_Word sh_entsize;
315 typedef struct elf64_shdr {
316 Elf64_Word sh_name; /* Section name, index in string tbl */
317 Elf64_Word sh_type; /* Type of section */
318 Elf64_Xword sh_flags; /* Miscellaneous section attributes */
319 Elf64_Addr sh_addr; /* Section virtual addr at execution */
320 Elf64_Off sh_offset; /* Section file offset */
321 Elf64_Xword sh_size; /* Size of section in bytes */
322 Elf64_Word sh_link; /* Index of another section */
323 Elf64_Word sh_info; /* Additional section information */
324 Elf64_Xword sh_addralign; /* Section alignment */
325 Elf64_Xword sh_entsize; /* Entry size if section holds table */
328 #define EI_MAG0 0 /* e_ident[] indexes */
338 #define ELFMAG0 0x7f /* EI_MAG */
342 #define ELFMAG "\177ELF"
345 #define ELFCLASSNONE 0 /* EI_CLASS */
348 #define ELFCLASSNUM 3
350 #define ELFDATANONE 0 /* e_ident[EI_DATA] */
351 #define ELFDATA2LSB 1
352 #define ELFDATA2MSB 2
354 #define EV_NONE 0 /* e_version, EI_VERSION */
358 #define ELFOSABI_NONE 0
359 #define ELFOSABI_LINUX 3
362 #define ELF_OSABI ELFOSABI_NONE
366 * Notes used in ET_CORE. Architectures export some of the arch register sets
367 * using the corresponding note types via the PTRACE_GETREGSET and
368 * PTRACE_SETREGSET requests.
370 #define NT_PRSTATUS 1
372 #define NT_PRPSINFO 3
373 #define NT_TASKSTRUCT 4
376 * Note to userspace developers: size of NT_SIGINFO note may increase
377 * in the future to accomodate more fields, don't assume it is fixed!
379 #define NT_SIGINFO 0x53494749
380 #define NT_FILE 0x46494c45
381 #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */
382 #define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */
383 #define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */
384 #define NT_PPC_VSX 0x102 /* PowerPC VSX registers */
385 #define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */
386 #define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */
387 #define NT_X86_XSTATE 0x202 /* x86 extended state using xsave */
388 #define NT_S390_HIGH_GPRS 0x300 /* s390 upper register halves */
389 #define NT_S390_TIMER 0x301 /* s390 timer register */
390 #define NT_S390_TODCMP 0x302 /* s390 TOD clock comparator register */
391 #define NT_S390_TODPREG 0x303 /* s390 TOD programmable register */
392 #define NT_S390_CTRS 0x304 /* s390 control registers */
393 #define NT_S390_PREFIX 0x305 /* s390 prefix register */
394 #define NT_S390_LAST_BREAK 0x306 /* s390 breaking event address */
395 #define NT_S390_SYSTEM_CALL 0x307 /* s390 system call restart data */
396 #define NT_S390_TDB 0x308 /* s390 transaction diagnostic block */
397 #define NT_ARM_VFP 0x400 /* ARM VFP/NEON registers */
398 #define NT_ARM_TLS 0x401 /* ARM TLS register */
399 #define NT_ARM_HW_BREAK 0x402 /* ARM hardware breakpoint registers */
400 #define NT_ARM_HW_WATCH 0x403 /* ARM hardware watchpoint registers */
403 /* Note header in a PT_NOTE section */
404 typedef struct elf32_note {
405 Elf32_Word n_namesz; /* Name size */
406 Elf32_Word n_descsz; /* Content size */
407 Elf32_Word n_type; /* Content type */
410 /* Note header in a PT_NOTE section */
411 typedef struct elf64_note {
412 Elf64_Word n_namesz; /* Name size */
413 Elf64_Word n_descsz; /* Content size */
414 Elf64_Word n_type; /* Content type */
418 #ifndef elf_read_implies_exec
419 /* Executables for which elf_read_implies_exec() returns TRUE will
420 have the READ_IMPLIES_EXEC personality flag set automatically.
421 Override in asm/elf.h as needed. */
422 # define elf_read_implies_exec(ex, have_pt_gnu_stack) 0
425 #if ELF_CLASS == ELFCLASS32
427 extern Elf32_Dyn _DYNAMIC [];
428 #define elfhdr elf32_hdr
429 #define elf_phdr elf32_phdr
430 #define elf_shdr elf32_shdr
431 #define elf_note elf32_note
432 #define elf_addr_t Elf32_Off
433 #define Elf_Half Elf32_Half
437 extern Elf64_Dyn _DYNAMIC [];
438 #define elfhdr elf64_hdr
439 #define elf_phdr elf64_phdr
440 #define elf_shdr elf64_shdr
441 #define elf_note elf64_note
442 #define elf_addr_t Elf64_Off
443 #define Elf_Half Elf64_Half
447 /* Optional callbacks to write extra ELF notes. */
450 #ifndef ARCH_HAVE_EXTRA_ELF_NOTES
451 static inline int elf_coredump_extra_notes_size(void) { return 0; }
452 static inline int elf_coredump_extra_notes_write(struct file *file,
453 loff_t *foffset) { return 0; }
455 extern int elf_coredump_extra_notes_size(void);
456 extern int elf_coredump_extra_notes_write(struct file *file, loff_t *foffset);
458 #endif /* __KERNEL__ */
459 #endif /* _LINUX_ELF_H */