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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2#ifndef _UAPI_LINUX_ELF_H3#define _UAPI_LINUX_ELF_H4 5#include <linux/types.h>6#include <linux/elf-em.h>7 8/* 32-bit ELF base types. */9typedef __u32 Elf32_Addr;10typedef __u16 Elf32_Half;11typedef __u32 Elf32_Off;12typedef __s32 Elf32_Sword;13typedef __u32 Elf32_Word;14 15/* 64-bit ELF base types. */16typedef __u64 Elf64_Addr;17typedef __u16 Elf64_Half;18typedef __s16 Elf64_SHalf;19typedef __u64 Elf64_Off;20typedef __s32 Elf64_Sword;21typedef __u32 Elf64_Word;22typedef __u64 Elf64_Xword;23typedef __s64 Elf64_Sxword;24 25/* These constants are for the segment types stored in the image headers */26#define PT_NULL 027#define PT_LOAD 128#define PT_DYNAMIC 229#define PT_INTERP 330#define PT_NOTE 431#define PT_SHLIB 532#define PT_PHDR 633#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 0x7000000037#define PT_HIPROC 0x7fffffff38#define PT_GNU_EH_FRAME (PT_LOOS + 0x474e550)39#define PT_GNU_STACK (PT_LOOS + 0x474e551)40#define PT_GNU_RELRO (PT_LOOS + 0x474e552)41#define PT_GNU_PROPERTY (PT_LOOS + 0x474e553)42 43 44/* ARM MTE memory tag segment type */45#define PT_AARCH64_MEMTAG_MTE (PT_LOPROC + 0x2)46 47/*48 * Extended Numbering49 *50 * If the real number of program header table entries is larger than51 * or equal to PN_XNUM(0xffff), it is set to sh_info field of the52 * section header at index 0, and PN_XNUM is set to e_phnum53 * field. Otherwise, the section header at index 0 is zero54 * initialized, if it exists.55 *56 * Specifications are available in:57 *58 * - Oracle: Linker and Libraries.59 * Part No: 817–1984–19, August 2011.60 * https://docs.oracle.com/cd/E18752_01/pdf/817-1984.pdf61 *62 * - System V ABI AMD64 Architecture Processor Supplement63 * Draft Version 0.99.4,64 * January 13, 2010.65 * http://www.cs.washington.edu/education/courses/cse351/12wi/supp-docs/abi.pdf66 */67#define PN_XNUM 0xffff68 69/* These constants define the different elf file types */70#define ET_NONE 071#define ET_REL 172#define ET_EXEC 273#define ET_DYN 374#define ET_CORE 475#define ET_LOPROC 0xff0076#define ET_HIPROC 0xffff77 78/* This is the info that is needed to parse the dynamic section of the file */79#define DT_NULL 080#define DT_NEEDED 181#define DT_PLTRELSZ 282#define DT_PLTGOT 383#define DT_HASH 484#define DT_STRTAB 585#define DT_SYMTAB 686#define DT_RELA 787#define DT_RELASZ 888#define DT_RELAENT 989#define DT_STRSZ 1090#define DT_SYMENT 1191#define DT_INIT 1292#define DT_FINI 1393#define DT_SONAME 1494#define DT_RPATH 1595#define DT_SYMBOLIC 1696#define DT_REL 1797#define DT_RELSZ 1898#define DT_RELENT 1999#define DT_PLTREL 20100#define DT_DEBUG 21101#define DT_TEXTREL 22102#define DT_JMPREL 23103#define DT_ENCODING 32104#define OLD_DT_LOOS 0x60000000105#define DT_LOOS 0x6000000d106#define DT_HIOS 0x6ffff000107#define DT_VALRNGLO 0x6ffffd00108#define DT_VALRNGHI 0x6ffffdff109#define DT_ADDRRNGLO 0x6ffffe00110#define DT_ADDRRNGHI 0x6ffffeff111#define DT_VERSYM 0x6ffffff0112#define DT_RELACOUNT 0x6ffffff9113#define DT_RELCOUNT 0x6ffffffa114#define DT_FLAGS_1 0x6ffffffb115#define DT_VERDEF 0x6ffffffc116#define DT_VERDEFNUM 0x6ffffffd117#define DT_VERNEED 0x6ffffffe118#define DT_VERNEEDNUM 0x6fffffff119#define OLD_DT_HIOS 0x6fffffff120#define DT_LOPROC 0x70000000121#define DT_HIPROC 0x7fffffff122 123/* This info is needed when parsing the symbol table */124#define STB_LOCAL 0125#define STB_GLOBAL 1126#define STB_WEAK 2127 128#define STT_NOTYPE 0129#define STT_OBJECT 1130#define STT_FUNC 2131#define STT_SECTION 3132#define STT_FILE 4133#define STT_COMMON 5134#define STT_TLS 6135 136#define ELF_ST_BIND(x) ((x) >> 4)137#define ELF_ST_TYPE(x) ((x) & 0xf)138#define ELF32_ST_BIND(x) ELF_ST_BIND(x)139#define ELF32_ST_TYPE(x) ELF_ST_TYPE(x)140#define ELF64_ST_BIND(x) ELF_ST_BIND(x)141#define ELF64_ST_TYPE(x) ELF_ST_TYPE(x)142 143typedef struct {144 Elf32_Sword d_tag;145 union {146 Elf32_Sword d_val;147 Elf32_Addr d_ptr;148 } d_un;149} Elf32_Dyn;150 151typedef struct {152 Elf64_Sxword d_tag; /* entry tag value */153 union {154 Elf64_Xword d_val;155 Elf64_Addr d_ptr;156 } d_un;157} Elf64_Dyn;158 159/* The following are used with relocations */160#define ELF32_R_SYM(x) ((x) >> 8)161#define ELF32_R_TYPE(x) ((x) & 0xff)162 163#define ELF64_R_SYM(i) ((i) >> 32)164#define ELF64_R_TYPE(i) ((i) & 0xffffffff)165 166typedef struct elf32_rel {167 Elf32_Addr r_offset;168 Elf32_Word r_info;169} Elf32_Rel;170 171typedef struct elf64_rel {172 Elf64_Addr r_offset; /* Location at which to apply the action */173 Elf64_Xword r_info; /* index and type of relocation */174} Elf64_Rel;175 176typedef struct elf32_rela {177 Elf32_Addr r_offset;178 Elf32_Word r_info;179 Elf32_Sword r_addend;180} Elf32_Rela;181 182typedef struct elf64_rela {183 Elf64_Addr r_offset; /* Location at which to apply the action */184 Elf64_Xword r_info; /* index and type of relocation */185 Elf64_Sxword r_addend; /* Constant addend used to compute value */186} Elf64_Rela;187 188typedef struct elf32_sym {189 Elf32_Word st_name;190 Elf32_Addr st_value;191 Elf32_Word st_size;192 unsigned char st_info;193 unsigned char st_other;194 Elf32_Half st_shndx;195} Elf32_Sym;196 197typedef struct elf64_sym {198 Elf64_Word st_name; /* Symbol name, index in string tbl */199 unsigned char st_info; /* Type and binding attributes */200 unsigned char st_other; /* No defined meaning, 0 */201 Elf64_Half st_shndx; /* Associated section index */202 Elf64_Addr st_value; /* Value of the symbol */203 Elf64_Xword st_size; /* Associated symbol size */204} Elf64_Sym;205 206 207#define EI_NIDENT 16208 209typedef struct elf32_hdr {210 unsigned char e_ident[EI_NIDENT];211 Elf32_Half e_type;212 Elf32_Half e_machine;213 Elf32_Word e_version;214 Elf32_Addr e_entry; /* Entry point */215 Elf32_Off e_phoff;216 Elf32_Off e_shoff;217 Elf32_Word e_flags;218 Elf32_Half e_ehsize;219 Elf32_Half e_phentsize;220 Elf32_Half e_phnum;221 Elf32_Half e_shentsize;222 Elf32_Half e_shnum;223 Elf32_Half e_shstrndx;224} Elf32_Ehdr;225 226typedef struct elf64_hdr {227 unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */228 Elf64_Half e_type;229 Elf64_Half e_machine;230 Elf64_Word e_version;231 Elf64_Addr e_entry; /* Entry point virtual address */232 Elf64_Off e_phoff; /* Program header table file offset */233 Elf64_Off e_shoff; /* Section header table file offset */234 Elf64_Word e_flags;235 Elf64_Half e_ehsize;236 Elf64_Half e_phentsize;237 Elf64_Half e_phnum;238 Elf64_Half e_shentsize;239 Elf64_Half e_shnum;240 Elf64_Half e_shstrndx;241} Elf64_Ehdr;242 243/* These constants define the permissions on sections in the program244 header, p_flags. */245#define PF_R 0x4246#define PF_W 0x2247#define PF_X 0x1248 249typedef struct elf32_phdr {250 Elf32_Word p_type;251 Elf32_Off p_offset;252 Elf32_Addr p_vaddr;253 Elf32_Addr p_paddr;254 Elf32_Word p_filesz;255 Elf32_Word p_memsz;256 Elf32_Word p_flags;257 Elf32_Word p_align;258} Elf32_Phdr;259 260typedef struct elf64_phdr {261 Elf64_Word p_type;262 Elf64_Word p_flags;263 Elf64_Off p_offset; /* Segment file offset */264 Elf64_Addr p_vaddr; /* Segment virtual address */265 Elf64_Addr p_paddr; /* Segment physical address */266 Elf64_Xword p_filesz; /* Segment size in file */267 Elf64_Xword p_memsz; /* Segment size in memory */268 Elf64_Xword p_align; /* Segment alignment, file & memory */269} Elf64_Phdr;270 271/* sh_type */272#define SHT_NULL 0273#define SHT_PROGBITS 1274#define SHT_SYMTAB 2275#define SHT_STRTAB 3276#define SHT_RELA 4277#define SHT_HASH 5278#define SHT_DYNAMIC 6279#define SHT_NOTE 7280#define SHT_NOBITS 8281#define SHT_REL 9282#define SHT_SHLIB 10283#define SHT_DYNSYM 11284#define SHT_NUM 12285#define SHT_LOPROC 0x70000000286#define SHT_HIPROC 0x7fffffff287#define SHT_LOUSER 0x80000000288#define SHT_HIUSER 0xffffffff289 290/* sh_flags */291#define SHF_WRITE 0x1292#define SHF_ALLOC 0x2293#define SHF_EXECINSTR 0x4294#define SHF_RELA_LIVEPATCH 0x00100000295#define SHF_RO_AFTER_INIT 0x00200000296#define SHF_MASKPROC 0xf0000000297 298/* special section indexes */299#define SHN_UNDEF 0300#define SHN_LORESERVE 0xff00301#define SHN_LOPROC 0xff00302#define SHN_HIPROC 0xff1f303#define SHN_LIVEPATCH 0xff20304#define SHN_ABS 0xfff1305#define SHN_COMMON 0xfff2306#define SHN_HIRESERVE 0xffff307 308typedef struct elf32_shdr {309 Elf32_Word sh_name;310 Elf32_Word sh_type;311 Elf32_Word sh_flags;312 Elf32_Addr sh_addr;313 Elf32_Off sh_offset;314 Elf32_Word sh_size;315 Elf32_Word sh_link;316 Elf32_Word sh_info;317 Elf32_Word sh_addralign;318 Elf32_Word sh_entsize;319} Elf32_Shdr;320 321typedef struct elf64_shdr {322 Elf64_Word sh_name; /* Section name, index in string tbl */323 Elf64_Word sh_type; /* Type of section */324 Elf64_Xword sh_flags; /* Miscellaneous section attributes */325 Elf64_Addr sh_addr; /* Section virtual addr at execution */326 Elf64_Off sh_offset; /* Section file offset */327 Elf64_Xword sh_size; /* Size of section in bytes */328 Elf64_Word sh_link; /* Index of another section */329 Elf64_Word sh_info; /* Additional section information */330 Elf64_Xword sh_addralign; /* Section alignment */331 Elf64_Xword sh_entsize; /* Entry size if section holds table */332} Elf64_Shdr;333 334#define EI_MAG0 0 /* e_ident[] indexes */335#define EI_MAG1 1336#define EI_MAG2 2337#define EI_MAG3 3338#define EI_CLASS 4339#define EI_DATA 5340#define EI_VERSION 6341#define EI_OSABI 7342#define EI_PAD 8343 344#define ELFMAG0 0x7f /* EI_MAG */345#define ELFMAG1 'E'346#define ELFMAG2 'L'347#define ELFMAG3 'F'348#define ELFMAG "\177ELF"349#define SELFMAG 4350 351#define ELFCLASSNONE 0 /* EI_CLASS */352#define ELFCLASS32 1353#define ELFCLASS64 2354#define ELFCLASSNUM 3355 356#define ELFDATANONE 0 /* e_ident[EI_DATA] */357#define ELFDATA2LSB 1358#define ELFDATA2MSB 2359 360#define EV_NONE 0 /* e_version, EI_VERSION */361#define EV_CURRENT 1362#define EV_NUM 2363 364#define ELFOSABI_NONE 0365#define ELFOSABI_LINUX 3366 367#ifndef ELF_OSABI368#define ELF_OSABI ELFOSABI_NONE369#endif370 371/*372 * Notes used in ET_CORE. Architectures export some of the arch register sets373 * using the corresponding note types via the PTRACE_GETREGSET and374 * PTRACE_SETREGSET requests.375 * The note name for these types is "LINUX", except NT_PRFPREG that is named376 * "CORE".377 */378#define NT_PRSTATUS 1379#define NT_PRFPREG 2380#define NT_PRPSINFO 3381#define NT_TASKSTRUCT 4382#define NT_AUXV 6383/*384 * Note to userspace developers: size of NT_SIGINFO note may increase385 * in the future to accomodate more fields, don't assume it is fixed!386 */387#define NT_SIGINFO 0x53494749388#define NT_FILE 0x46494c45389#define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */390#define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */391#define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */392#define NT_PPC_VSX 0x102 /* PowerPC VSX registers */393#define NT_PPC_TAR 0x103 /* Target Address Register */394#define NT_PPC_PPR 0x104 /* Program Priority Register */395#define NT_PPC_DSCR 0x105 /* Data Stream Control Register */396#define NT_PPC_EBB 0x106 /* Event Based Branch Registers */397#define NT_PPC_PMU 0x107 /* Performance Monitor Registers */398#define NT_PPC_TM_CGPR 0x108 /* TM checkpointed GPR Registers */399#define NT_PPC_TM_CFPR 0x109 /* TM checkpointed FPR Registers */400#define NT_PPC_TM_CVMX 0x10a /* TM checkpointed VMX Registers */401#define NT_PPC_TM_CVSX 0x10b /* TM checkpointed VSX Registers */402#define NT_PPC_TM_SPR 0x10c /* TM Special Purpose Registers */403#define NT_PPC_TM_CTAR 0x10d /* TM checkpointed Target Address Register */404#define NT_PPC_TM_CPPR 0x10e /* TM checkpointed Program Priority Register */405#define NT_PPC_TM_CDSCR 0x10f /* TM checkpointed Data Stream Control Register */406#define NT_PPC_PKEY 0x110 /* Memory Protection Keys registers */407#define NT_PPC_DEXCR 0x111 /* PowerPC DEXCR registers */408#define NT_PPC_HASHKEYR 0x112 /* PowerPC HASHKEYR register */409#define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */410#define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */411#define NT_X86_XSTATE 0x202 /* x86 extended state using xsave */412/* Old binutils treats 0x203 as a CET state */413#define NT_X86_SHSTK 0x204 /* x86 SHSTK state */414#define NT_X86_XSAVE_LAYOUT 0x205 /* XSAVE layout description */415#define NT_S390_HIGH_GPRS 0x300 /* s390 upper register halves */416#define NT_S390_TIMER 0x301 /* s390 timer register */417#define NT_S390_TODCMP 0x302 /* s390 TOD clock comparator register */418#define NT_S390_TODPREG 0x303 /* s390 TOD programmable register */419#define NT_S390_CTRS 0x304 /* s390 control registers */420#define NT_S390_PREFIX 0x305 /* s390 prefix register */421#define NT_S390_LAST_BREAK 0x306 /* s390 breaking event address */422#define NT_S390_SYSTEM_CALL 0x307 /* s390 system call restart data */423#define NT_S390_TDB 0x308 /* s390 transaction diagnostic block */424#define NT_S390_VXRS_LOW 0x309 /* s390 vector registers 0-15 upper half */425#define NT_S390_VXRS_HIGH 0x30a /* s390 vector registers 16-31 */426#define NT_S390_GS_CB 0x30b /* s390 guarded storage registers */427#define NT_S390_GS_BC 0x30c /* s390 guarded storage broadcast control block */428#define NT_S390_RI_CB 0x30d /* s390 runtime instrumentation */429#define NT_S390_PV_CPU_DATA 0x30e /* s390 protvirt cpu dump data */430#define NT_ARM_VFP 0x400 /* ARM VFP/NEON registers */431#define NT_ARM_TLS 0x401 /* ARM TLS register */432#define NT_ARM_HW_BREAK 0x402 /* ARM hardware breakpoint registers */433#define NT_ARM_HW_WATCH 0x403 /* ARM hardware watchpoint registers */434#define NT_ARM_SYSTEM_CALL 0x404 /* ARM system call number */435#define NT_ARM_SVE 0x405 /* ARM Scalable Vector Extension registers */436#define NT_ARM_PAC_MASK 0x406 /* ARM pointer authentication code masks */437#define NT_ARM_PACA_KEYS 0x407 /* ARM pointer authentication address keys */438#define NT_ARM_PACG_KEYS 0x408 /* ARM pointer authentication generic key */439#define NT_ARM_TAGGED_ADDR_CTRL 0x409 /* arm64 tagged address control (prctl()) */440#define NT_ARM_PAC_ENABLED_KEYS 0x40a /* arm64 ptr auth enabled keys (prctl()) */441#define NT_ARM_SSVE 0x40b /* ARM Streaming SVE registers */442#define NT_ARM_ZA 0x40c /* ARM SME ZA registers */443#define NT_ARM_ZT 0x40d /* ARM SME ZT registers */444#define NT_ARM_FPMR 0x40e /* ARM floating point mode register */445#define NT_ARM_POE 0x40f /* ARM POE registers */446#define NT_ARC_V2 0x600 /* ARCv2 accumulator/extra registers */447#define NT_VMCOREDD 0x700 /* Vmcore Device Dump Note */448#define NT_MIPS_DSP 0x800 /* MIPS DSP ASE registers */449#define NT_MIPS_FP_MODE 0x801 /* MIPS floating-point mode */450#define NT_MIPS_MSA 0x802 /* MIPS SIMD registers */451#define NT_RISCV_CSR 0x900 /* RISC-V Control and Status Registers */452#define NT_RISCV_VECTOR 0x901 /* RISC-V vector registers */453#define NT_LOONGARCH_CPUCFG 0xa00 /* LoongArch CPU config registers */454#define NT_LOONGARCH_CSR 0xa01 /* LoongArch control and status registers */455#define NT_LOONGARCH_LSX 0xa02 /* LoongArch Loongson SIMD Extension registers */456#define NT_LOONGARCH_LASX 0xa03 /* LoongArch Loongson Advanced SIMD Extension registers */457#define NT_LOONGARCH_LBT 0xa04 /* LoongArch Loongson Binary Translation registers */458#define NT_LOONGARCH_HW_BREAK 0xa05 /* LoongArch hardware breakpoint registers */459#define NT_LOONGARCH_HW_WATCH 0xa06 /* LoongArch hardware watchpoint registers */460 461/* Note types with note name "GNU" */462#define NT_GNU_PROPERTY_TYPE_0 5463 464/* Note header in a PT_NOTE section */465typedef struct elf32_note {466 Elf32_Word n_namesz; /* Name size */467 Elf32_Word n_descsz; /* Content size */468 Elf32_Word n_type; /* Content type */469} Elf32_Nhdr;470 471/* Note header in a PT_NOTE section */472typedef struct elf64_note {473 Elf64_Word n_namesz; /* Name size */474 Elf64_Word n_descsz; /* Content size */475 Elf64_Word n_type; /* Content type */476} Elf64_Nhdr;477 478/* .note.gnu.property types for EM_AARCH64: */479#define GNU_PROPERTY_AARCH64_FEATURE_1_AND 0xc0000000480 481/* Bits for GNU_PROPERTY_AARCH64_FEATURE_1_BTI */482#define GNU_PROPERTY_AARCH64_FEATURE_1_BTI (1U << 0)483 484#endif /* _UAPI_LINUX_ELF_H */485