1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _UAPI_LINUX_ELF_H
3 #define _UAPI_LINUX_ELF_H
5 #include <linux/types.h>
6 #include <linux/elf-em.h>
8 /* 32-bit ELF base types. */
9 typedef __u32 Elf32_Addr;
10 typedef __u16 Elf32_Half;
11 typedef __u32 Elf32_Off;
12 typedef __s32 Elf32_Sword;
13 typedef __u32 Elf32_Word;
15 /* 64-bit ELF base types. */
16 typedef __u64 Elf64_Addr;
17 typedef __u16 Elf64_Half;
18 typedef __s16 Elf64_SHalf;
19 typedef __u64 Elf64_Off;
20 typedef __s32 Elf64_Sword;
21 typedef __u32 Elf64_Word;
22 typedef __u64 Elf64_Xword;
23 typedef __s64 Elf64_Sxword;
25 /* These constants are for the segment types stored in the image headers */
33 #define PT_TLS 7 /* Thread local storage segment */
34 #define PT_LOOS 0x60000000 /* OS-specific */
35 #define PT_HIOS 0x6fffffff /* OS-specific */
36 #define PT_LOPROC 0x70000000
37 #define PT_HIPROC 0x7fffffff
38 #define PT_GNU_EH_FRAME 0x6474e550
40 #define PT_GNU_STACK (PT_LOOS + 0x474e551)
45 * If the real number of program header table entries is larger than
46 * or equal to PN_XNUM(0xffff), it is set to sh_info field of the
47 * section header at index 0, and PN_XNUM is set to e_phnum
48 * field. Otherwise, the section header at index 0 is zero
49 * initialized, if it exists.
51 * Specifications are available in:
53 * - Oracle: Linker and Libraries.
54 * Part No: 817–1984–19, August 2011.
55 * http://docs.oracle.com/cd/E18752_01/pdf/817-1984.pdf
57 * - System V ABI AMD64 Architecture Processor Supplement
58 * Draft Version 0.99.4,
60 * http://www.cs.washington.edu/education/courses/cse351/12wi/supp-docs/abi.pdf
62 #define PN_XNUM 0xffff
64 /* These constants define the different elf file types */
70 #define ET_LOPROC 0xff00
71 #define ET_HIPROC 0xffff
73 /* This is the info that is needed to parse the dynamic section of the file */
90 #define DT_SYMBOLIC 16
98 #define DT_ENCODING 32
99 #define OLD_DT_LOOS 0x60000000
100 #define DT_LOOS 0x6000000d
101 #define DT_HIOS 0x6ffff000
102 #define DT_VALRNGLO 0x6ffffd00
103 #define DT_VALRNGHI 0x6ffffdff
104 #define DT_ADDRRNGLO 0x6ffffe00
105 #define DT_ADDRRNGHI 0x6ffffeff
106 #define DT_VERSYM 0x6ffffff0
107 #define DT_RELACOUNT 0x6ffffff9
108 #define DT_RELCOUNT 0x6ffffffa
109 #define DT_FLAGS_1 0x6ffffffb
110 #define DT_VERDEF 0x6ffffffc
111 #define DT_VERDEFNUM 0x6ffffffd
112 #define DT_VERNEED 0x6ffffffe
113 #define DT_VERNEEDNUM 0x6fffffff
114 #define OLD_DT_HIOS 0x6fffffff
115 #define DT_LOPROC 0x70000000
116 #define DT_HIPROC 0x7fffffff
118 /* This info is needed when parsing the symbol table */
126 #define STT_SECTION 3
131 #define ELF_ST_BIND(x) ((x) >> 4)
132 #define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf)
133 #define ELF32_ST_BIND(x) ELF_ST_BIND(x)
134 #define ELF32_ST_TYPE(x) ELF_ST_TYPE(x)
135 #define ELF64_ST_BIND(x) ELF_ST_BIND(x)
136 #define ELF64_ST_TYPE(x) ELF_ST_TYPE(x)
138 typedef struct dynamic{
147 Elf64_Sxword d_tag; /* entry tag value */
154 /* The following are used with relocations */
155 #define ELF32_R_SYM(x) ((x) >> 8)
156 #define ELF32_R_TYPE(x) ((x) & 0xff)
158 #define ELF64_R_SYM(i) ((i) >> 32)
159 #define ELF64_R_TYPE(i) ((i) & 0xffffffff)
161 typedef struct elf32_rel {
166 typedef struct elf64_rel {
167 Elf64_Addr r_offset; /* Location at which to apply the action */
168 Elf64_Xword r_info; /* index and type of relocation */
171 typedef struct elf32_rela{
174 Elf32_Sword r_addend;
177 typedef struct elf64_rela {
178 Elf64_Addr r_offset; /* Location at which to apply the action */
179 Elf64_Xword r_info; /* index and type of relocation */
180 Elf64_Sxword r_addend; /* Constant addend used to compute value */
183 typedef struct elf32_sym{
187 unsigned char st_info;
188 unsigned char st_other;
192 typedef struct elf64_sym {
193 Elf64_Word st_name; /* Symbol name, index in string tbl */
194 unsigned char st_info; /* Type and binding attributes */
195 unsigned char st_other; /* No defined meaning, 0 */
196 Elf64_Half st_shndx; /* Associated section index */
197 Elf64_Addr st_value; /* Value of the symbol */
198 Elf64_Xword st_size; /* Associated symbol size */
204 typedef struct elf32_hdr{
205 unsigned char e_ident[EI_NIDENT];
207 Elf32_Half e_machine;
208 Elf32_Word e_version;
209 Elf32_Addr e_entry; /* Entry point */
214 Elf32_Half e_phentsize;
216 Elf32_Half e_shentsize;
218 Elf32_Half e_shstrndx;
221 typedef struct elf64_hdr {
222 unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */
224 Elf64_Half e_machine;
225 Elf64_Word e_version;
226 Elf64_Addr e_entry; /* Entry point virtual address */
227 Elf64_Off e_phoff; /* Program header table file offset */
228 Elf64_Off e_shoff; /* Section header table file offset */
231 Elf64_Half e_phentsize;
233 Elf64_Half e_shentsize;
235 Elf64_Half e_shstrndx;
238 /* These constants define the permissions on sections in the program
244 typedef struct elf32_phdr{
255 typedef struct elf64_phdr {
258 Elf64_Off p_offset; /* Segment file offset */
259 Elf64_Addr p_vaddr; /* Segment virtual address */
260 Elf64_Addr p_paddr; /* Segment physical address */
261 Elf64_Xword p_filesz; /* Segment size in file */
262 Elf64_Xword p_memsz; /* Segment size in memory */
263 Elf64_Xword p_align; /* Segment alignment, file & memory */
268 #define SHT_PROGBITS 1
273 #define SHT_DYNAMIC 6
278 #define SHT_DYNSYM 11
280 #define SHT_LOPROC 0x70000000
281 #define SHT_HIPROC 0x7fffffff
282 #define SHT_LOUSER 0x80000000
283 #define SHT_HIUSER 0xffffffff
286 #define SHF_WRITE 0x1
287 #define SHF_ALLOC 0x2
288 #define SHF_EXECINSTR 0x4
289 #define SHF_RELA_LIVEPATCH 0x00100000
290 #define SHF_RO_AFTER_INIT 0x00200000
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_LIVEPATCH 0xff20
299 #define SHN_ABS 0xfff1
300 #define SHN_COMMON 0xfff2
301 #define SHN_HIRESERVE 0xffff
303 typedef struct elf32_shdr {
312 Elf32_Word sh_addralign;
313 Elf32_Word sh_entsize;
316 typedef struct elf64_shdr {
317 Elf64_Word sh_name; /* Section name, index in string tbl */
318 Elf64_Word sh_type; /* Type of section */
319 Elf64_Xword sh_flags; /* Miscellaneous section attributes */
320 Elf64_Addr sh_addr; /* Section virtual addr at execution */
321 Elf64_Off sh_offset; /* Section file offset */
322 Elf64_Xword sh_size; /* Size of section in bytes */
323 Elf64_Word sh_link; /* Index of another section */
324 Elf64_Word sh_info; /* Additional section information */
325 Elf64_Xword sh_addralign; /* Section alignment */
326 Elf64_Xword sh_entsize; /* Entry size if section holds table */
329 #define EI_MAG0 0 /* e_ident[] indexes */
339 #define ELFMAG0 0x7f /* EI_MAG */
343 #define ELFMAG "\177ELF"
346 #define ELFCLASSNONE 0 /* EI_CLASS */
349 #define ELFCLASSNUM 3
351 #define ELFDATANONE 0 /* e_ident[EI_DATA] */
352 #define ELFDATA2LSB 1
353 #define ELFDATA2MSB 2
355 #define EV_NONE 0 /* e_version, EI_VERSION */
359 #define ELFOSABI_NONE 0
360 #define ELFOSABI_LINUX 3
363 #define ELF_OSABI ELFOSABI_NONE
367 * Notes used in ET_CORE. Architectures export some of the arch register sets
368 * using the corresponding note types via the PTRACE_GETREGSET and
369 * PTRACE_SETREGSET requests.
371 #define NT_PRSTATUS 1
373 #define NT_PRPSINFO 3
374 #define NT_TASKSTRUCT 4
377 * Note to userspace developers: size of NT_SIGINFO note may increase
378 * in the future to accomodate more fields, don't assume it is fixed!
380 #define NT_SIGINFO 0x53494749
381 #define NT_FILE 0x46494c45
382 #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */
383 #define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */
384 #define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */
385 #define NT_PPC_VSX 0x102 /* PowerPC VSX registers */
386 #define NT_PPC_TAR 0x103 /* Target Address Register */
387 #define NT_PPC_PPR 0x104 /* Program Priority Register */
388 #define NT_PPC_DSCR 0x105 /* Data Stream Control Register */
389 #define NT_PPC_EBB 0x106 /* Event Based Branch Registers */
390 #define NT_PPC_PMU 0x107 /* Performance Monitor Registers */
391 #define NT_PPC_TM_CGPR 0x108 /* TM checkpointed GPR Registers */
392 #define NT_PPC_TM_CFPR 0x109 /* TM checkpointed FPR Registers */
393 #define NT_PPC_TM_CVMX 0x10a /* TM checkpointed VMX Registers */
394 #define NT_PPC_TM_CVSX 0x10b /* TM checkpointed VSX Registers */
395 #define NT_PPC_TM_SPR 0x10c /* TM Special Purpose Registers */
396 #define NT_PPC_TM_CTAR 0x10d /* TM checkpointed Target Address Register */
397 #define NT_PPC_TM_CPPR 0x10e /* TM checkpointed Program Priority Register */
398 #define NT_PPC_TM_CDSCR 0x10f /* TM checkpointed Data Stream Control Register */
399 #define NT_PPC_PKEY 0x110 /* Memory Protection Keys registers */
400 #define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */
401 #define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */
402 #define NT_X86_XSTATE 0x202 /* x86 extended state using xsave */
403 #define NT_S390_HIGH_GPRS 0x300 /* s390 upper register halves */
404 #define NT_S390_TIMER 0x301 /* s390 timer register */
405 #define NT_S390_TODCMP 0x302 /* s390 TOD clock comparator register */
406 #define NT_S390_TODPREG 0x303 /* s390 TOD programmable register */
407 #define NT_S390_CTRS 0x304 /* s390 control registers */
408 #define NT_S390_PREFIX 0x305 /* s390 prefix register */
409 #define NT_S390_LAST_BREAK 0x306 /* s390 breaking event address */
410 #define NT_S390_SYSTEM_CALL 0x307 /* s390 system call restart data */
411 #define NT_S390_TDB 0x308 /* s390 transaction diagnostic block */
412 #define NT_S390_VXRS_LOW 0x309 /* s390 vector registers 0-15 upper half */
413 #define NT_S390_VXRS_HIGH 0x30a /* s390 vector registers 16-31 */
414 #define NT_S390_GS_CB 0x30b /* s390 guarded storage registers */
415 #define NT_S390_GS_BC 0x30c /* s390 guarded storage broadcast control block */
416 #define NT_S390_RI_CB 0x30d /* s390 runtime instrumentation */
417 #define NT_ARM_VFP 0x400 /* ARM VFP/NEON registers */
418 #define NT_ARM_TLS 0x401 /* ARM TLS register */
419 #define NT_ARM_HW_BREAK 0x402 /* ARM hardware breakpoint registers */
420 #define NT_ARM_HW_WATCH 0x403 /* ARM hardware watchpoint registers */
421 #define NT_ARM_SYSTEM_CALL 0x404 /* ARM system call number */
422 #define NT_ARM_SVE 0x405 /* ARM Scalable Vector Extension registers */
423 #define NT_ARM_PAC_MASK 0x406 /* ARM pointer authentication code masks */
424 #define NT_ARC_V2 0x600 /* ARCv2 accumulator/extra registers */
425 #define NT_VMCOREDD 0x700 /* Vmcore Device Dump Note */
426 #define NT_MIPS_DSP 0x800 /* MIPS DSP ASE registers */
427 #define NT_MIPS_FP_MODE 0x801 /* MIPS floating-point mode */
429 /* Note header in a PT_NOTE section */
430 typedef struct elf32_note {
431 Elf32_Word n_namesz; /* Name size */
432 Elf32_Word n_descsz; /* Content size */
433 Elf32_Word n_type; /* Content type */
436 /* Note header in a PT_NOTE section */
437 typedef struct elf64_note {
438 Elf64_Word n_namesz; /* Name size */
439 Elf64_Word n_descsz; /* Content size */
440 Elf64_Word n_type; /* Content type */
443 #endif /* _UAPI_LINUX_ELF_H */