/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _LINUX_ELF_H #define _LINUX_ELF_H #include <linux/types.h> #include <linux/elf-em.h> /* 32-bit ELF base types. */ typedef __u32 Elf32_Addr; typedef __u16 Elf32_Half; typedef __u32 Elf32_Off; typedef __s32 Elf32_Sword; typedef __u32 Elf32_Word; /* 64-bit ELF base types. */ typedef __u64 Elf64_Addr; typedef __u16 Elf64_Half; typedef __s16 Elf64_SHalf; typedef __u64 Elf64_Off; typedef __s32 Elf64_Sword; typedef __u32 Elf64_Word; typedef __u64 Elf64_Xword; typedef __s64 Elf64_Sxword; /* These constants are for the segment types stored in the image headers */ #define PT_NULL 0 #define PT_LOAD 1 #define PT_DYNAMIC 2 #define PT_INTERP 3 #define PT_NOTE 4 #define PT_SHLIB 5 #define PT_PHDR 6 #define PT_TLS 7 /* Thread local storage segment */ #define PT_LOOS 0x60000000 /* OS-specific */ #define PT_HIOS 0x6fffffff /* OS-specific */ #define PT_LOPROC 0x70000000 #define PT_HIPROC 0x7fffffff #define PT_GNU_EH_FRAME 0x6474e550 #define PT_GNU_PROPERTY 0x6474e553 #define PT_GNU_STACK (PT_LOOS + 0x474e551) /* * Extended Numbering * * If the real number of program header table entries is larger than * or equal to PN_XNUM(0xffff), it is set to sh_info field of the * section header at index 0, and PN_XNUM is set to e_phnum * field. Otherwise, the section header at index 0 is zero * initialized, if it exists. * * Specifications are available in: * * - Oracle: Linker and Libraries. * Part No: 817–1984–19, August 2011. * https://docs.oracle.com/cd/E18752_01/pdf/817-1984.pdf * * - System V ABI AMD64 Architecture Processor Supplement * Draft Version 0.99.4, * January 13, 2010. * http://www.cs.washington.edu/education/courses/cse351/12wi/supp-docs/abi.pdf */ #define PN_XNUM 0xffff /* These constants define the different elf file types */ #define ET_NONE 0 #define ET_REL 1 #define ET_EXEC 2 #define ET_DYN 3 #define ET_CORE 4 #define ET_LOPROC 0xff00 #define ET_HIPROC 0xffff /* This is the info that is needed to parse the dynamic section of the file */ #define DT_NULL 0 #define DT_NEEDED 1 #define DT_PLTRELSZ 2 #define DT_PLTGOT 3 #define DT_HASH 4 #define DT_STRTAB 5 #define DT_SYMTAB 6 #define DT_RELA 7 #define DT_RELASZ 8 #define DT_RELAENT 9 #define DT_STRSZ 10 #define DT_SYMENT 11 #define DT_INIT 12 #define DT_FINI 13 #define DT_SONAME 14 #define DT_RPATH 15 #define DT_SYMBOLIC 16 #define DT_REL 17 #define DT_RELSZ 18 #define DT_RELENT 19 #define DT_PLTREL 20 #define DT_DEBUG 21 #define DT_TEXTREL 22 #define DT_JMPREL 23 #define DT_ENCODING 32 #define OLD_DT_LOOS 0x60000000 #define DT_LOOS 0x6000000d #define DT_HIOS 0x6ffff000 #define DT_VALRNGLO 0x6ffffd00 #define DT_VALRNGHI 0x6ffffdff #define DT_ADDRRNGLO 0x6ffffe00 #define DT_ADDRRNGHI 0x6ffffeff #define DT_VERSYM 0x6ffffff0 #define DT_RELACOUNT 0x6ffffff9 #define DT_RELCOUNT 0x6ffffffa #define DT_FLAGS_1 0x6ffffffb #define DT_VERDEF 0x6ffffffc #define DT_VERDEFNUM 0x6ffffffd #define DT_VERNEED 0x6ffffffe #define DT_VERNEEDNUM 0x6fffffff #define OLD_DT_HIOS 0x6fffffff #define DT_LOPROC 0x70000000 #define DT_HIPROC 0x7fffffff /* This info is needed when parsing the symbol table */ #define STB_LOCAL 0 #define STB_GLOBAL 1 #define STB_WEAK 2 #define STT_NOTYPE 0 #define STT_OBJECT 1 #define STT_FUNC 2 #define STT_SECTION 3 #define STT_FILE 4 #define STT_COMMON 5 #define STT_TLS 6 #define ELF_ST_BIND(x) ((x) >> 4) #define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf) #define ELF32_ST_BIND(x) ELF_ST_BIND(x) #define ELF32_ST_TYPE(x) ELF_ST_TYPE(x) #define ELF64_ST_BIND(x) ELF_ST_BIND(x) #define ELF64_ST_TYPE(x) ELF_ST_TYPE(x) typedef struct dynamic{ Elf32_Sword d_tag; union{ Elf32_Sword d_val; Elf32_Addr d_ptr; } d_un; } Elf32_Dyn; typedef struct { Elf64_Sxword d_tag; /* entry tag value */ union { Elf64_Xword d_val; Elf64_Addr d_ptr; } d_un; } Elf64_Dyn; /* The following are used with relocations */ #define ELF32_R_SYM(x) ((x) >> 8) #define ELF32_R_TYPE(x) ((x) & 0xff) #define ELF64_R_SYM(i) ((i) >> 32) #define ELF64_R_TYPE(i) ((i) & 0xffffffff) typedef struct elf32_rel { Elf32_Addr r_offset; Elf32_Word r_info; } Elf32_Rel; typedef struct elf64_rel { Elf64_Addr r_offset; /* Location at which to apply the action */ Elf64_Xword r_info; /* index and type of relocation */ } Elf64_Rel; typedef struct elf32_rela{ Elf32_Addr r_offset; Elf32_Word r_info; Elf32_Sword r_addend; } Elf32_Rela; typedef struct elf64_rela { Elf64_Addr r_offset; /* Location at which to apply the action */ Elf64_Xword r_info; /* index and type of relocation */ Elf64_Sxword r_addend; /* Constant addend used to compute value */ } Elf64_Rela; typedef struct elf32_sym{ Elf32_Word st_name; Elf32_Addr st_value; Elf32_Word st_size; unsigned char st_info; unsigned char st_other; Elf32_Half st_shndx; } Elf32_Sym; typedef struct elf64_sym { Elf64_Word st_name; /* Symbol name, index in string tbl */ unsigned char st_info; /* Type and binding attributes */ unsigned char st_other; /* No defined meaning, 0 */ Elf64_Half st_shndx; /* Associated section index */ Elf64_Addr st_value; /* Value of the symbol */ Elf64_Xword st_size; /* Associated symbol size */ } Elf64_Sym; #define EI_NIDENT 16 typedef struct elf32_hdr{ unsigned char e_ident[EI_NIDENT]; Elf32_Half e_type; Elf32_Half e_machine; Elf32_Word e_version; Elf32_Addr e_entry; /* Entry point */ Elf32_Off e_phoff; Elf32_Off e_shoff; Elf32_Word e_flags; Elf32_Half e_ehsize; Elf32_Half e_phentsize; Elf32_Half e_phnum; Elf32_Half e_shentsize; Elf32_Half e_shnum; Elf32_Half e_shstrndx; } Elf32_Ehdr; typedef struct elf64_hdr { unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */ Elf64_Half e_type; Elf64_Half e_machine; Elf64_Word e_version; Elf64_Addr e_entry; /* Entry point virtual address */ Elf64_Off e_phoff; /* Program header table file offset */ Elf64_Off e_shoff; /* Section header table file offset */ Elf64_Word e_flags; Elf64_Half e_ehsize; Elf64_Half e_phentsize; Elf64_Half e_phnum; Elf64_Half e_shentsize; Elf64_Half e_shnum; Elf64_Half e_shstrndx; } Elf64_Ehdr; /* These constants define the permissions on sections in the program header, p_flags. */ #define PF_R 0x4 #define PF_W 0x2 #define PF_X 0x1 typedef struct elf32_phdr{ Elf32_Word p_type; Elf32_Off p_offset; Elf32_Addr p_vaddr; Elf32_Addr p_paddr; Elf32_Word p_filesz; Elf32_Word p_memsz; Elf32_Word p_flags; Elf32_Word p_align; } Elf32_Phdr; typedef struct elf64_phdr { Elf64_Word p_type; Elf64_Word p_flags; Elf64_Off p_offset; /* Segment file offset */ Elf64_Addr p_vaddr; /* Segment virtual address */ Elf64_Addr p_paddr; /* Segment physical address */ Elf64_Xword p_filesz; /* Segment size in file */ Elf64_Xword p_memsz; /* Segment size in memory */ Elf64_Xword p_align; /* Segment alignment, file & memory */ } Elf64_Phdr; /* sh_type */ #define SHT_NULL 0 #define SHT_PROGBITS 1 #define SHT_SYMTAB 2 #define SHT_STRTAB 3 #define SHT_RELA 4 #define SHT_HASH 5 #define SHT_DYNAMIC 6 #define SHT_NOTE 7 #define SHT_NOBITS 8 #define SHT_REL 9 #define SHT_SHLIB 10 #define SHT_DYNSYM 11 #define SHT_NUM 12 #define SHT_LOPROC 0x70000000 #define SHT_HIPROC 0x7fffffff #define SHT_LOUSER 0x80000000 #define SHT_HIUSER 0xffffffff /* sh_flags */ #define SHF_WRITE 0x1 #define SHF_ALLOC 0x2 #define SHF_EXECINSTR 0x4 #define SHF_RELA_LIVEPATCH 0x00100000 #define SHF_RO_AFTER_INIT 0x00200000 #define SHF_MASKPROC 0xf0000000 /* special section indexes */ #define SHN_UNDEF 0 #define SHN_LORESERVE 0xff00 #define SHN_LOPROC 0xff00 #define SHN_HIPROC 0xff1f #define SHN_LIVEPATCH 0xff20 #define SHN_ABS 0xfff1 #define SHN_COMMON 0xfff2 #define SHN_HIRESERVE 0xffff typedef struct elf32_shdr { Elf32_Word sh_name; Elf32_Word sh_type; Elf32_Word sh_flags; Elf32_Addr sh_addr; Elf32_Off sh_offset; Elf32_Word sh_size; Elf32_Word sh_link; Elf32_Word sh_info; Elf32_Word sh_addralign; Elf32_Word sh_entsize; } Elf32_Shdr; typedef struct elf64_shdr { Elf64_Word sh_name; /* Section name, index in string tbl */ Elf64_Word sh_type; /* Type of section */ Elf64_Xword sh_flags; /* Miscellaneous section attributes */ Elf64_Addr sh_addr; /* Section virtual addr at execution */ Elf64_Off sh_offset; /* Section file offset */ Elf64_Xword sh_size; /* Size of section in bytes */ Elf64_Word sh_link; /* Index of another section */ Elf64_Word sh_info; /* Additional section information */ Elf64_Xword sh_addralign; /* Section alignment */ Elf64_Xword sh_entsize; /* Entry size if section holds table */ } Elf64_Shdr; #define EI_MAG0 0 /* e_ident[] indexes */ #define EI_MAG1 1 #define EI_MAG2 2 #define EI_MAG3 3 #define EI_CLASS 4 #define EI_DATA 5 #define EI_VERSION 6 #define EI_OSABI 7 #define EI_PAD 8 #define ELFMAG0 0x7f /* EI_MAG */ #define ELFMAG1 'E' #define ELFMAG2 'L' #define ELFMAG3 'F' #define ELFMAG "\177ELF" #define SELFMAG 4 #define ELFCLASSNONE 0 /* EI_CLASS */ #define ELFCLASS32 1 #define ELFCLASS64 2 #define ELFCLASSNUM 3 #define ELFDATANONE 0 /* e_ident[EI_DATA] */ #define ELFDATA2LSB 1 #define ELFDATA2MSB 2 #define EV_NONE 0 /* e_version, EI_VERSION */ #define EV_CURRENT 1 #define EV_NUM 2 #define ELFOSABI_NONE 0 #define ELFOSABI_LINUX 3 #ifndef ELF_OSABI #define ELF_OSABI ELFOSABI_NONE #endif /* * Notes used in ET_CORE. Architectures export some of the arch register sets * using the corresponding note types via the PTRACE_GETREGSET and * PTRACE_SETREGSET requests. * The note name for all these is "LINUX". */ #define NT_PRSTATUS 1 #define NT_PRFPREG 2 #define NT_PRPSINFO 3 #define NT_TASKSTRUCT 4 #define NT_AUXV 6 /* * Note to userspace developers: size of NT_SIGINFO note may increase * in the future to accomodate more fields, don't assume it is fixed! */ #define NT_SIGINFO 0x53494749 #define NT_FILE 0x46494c45 #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ #define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */ #define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */ #define NT_PPC_VSX 0x102 /* PowerPC VSX registers */ #define NT_PPC_TAR 0x103 /* Target Address Register */ #define NT_PPC_PPR 0x104 /* Program Priority Register */ #define NT_PPC_DSCR 0x105 /* Data Stream Control Register */ #define NT_PPC_EBB 0x106 /* Event Based Branch Registers */ #define NT_PPC_PMU 0x107 /* Performance Monitor Registers */ #define NT_PPC_TM_CGPR 0x108 /* TM checkpointed GPR Registers */ #define NT_PPC_TM_CFPR 0x109 /* TM checkpointed FPR Registers */ #define NT_PPC_TM_CVMX 0x10a /* TM checkpointed VMX Registers */ #define NT_PPC_TM_CVSX 0x10b /* TM checkpointed VSX Registers */ #define NT_PPC_TM_SPR 0x10c /* TM Special Purpose Registers */ #define NT_PPC_TM_CTAR 0x10d /* TM checkpointed Target Address Register */ #define NT_PPC_TM_CPPR 0x10e /* TM checkpointed Program Priority Register */ #define NT_PPC_TM_CDSCR 0x10f /* TM checkpointed Data Stream Control Register */ #define NT_PPC_PKEY 0x110 /* Memory Protection Keys registers */ #define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */ #define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */ #define NT_X86_XSTATE 0x202 /* x86 extended state using xsave */ #define NT_S390_HIGH_GPRS 0x300 /* s390 upper register halves */ #define NT_S390_TIMER 0x301 /* s390 timer register */ #define NT_S390_TODCMP 0x302 /* s390 TOD clock comparator register */ #define NT_S390_TODPREG 0x303 /* s390 TOD programmable register */ #define NT_S390_CTRS 0x304 /* s390 control registers */ #define NT_S390_PREFIX 0x305 /* s390 prefix register */ #define NT_S390_LAST_BREAK 0x306 /* s390 breaking event address */ #define NT_S390_SYSTEM_CALL 0x307 /* s390 system call restart data */ #define NT_S390_TDB 0x308 /* s390 transaction diagnostic block */ #define NT_S390_VXRS_LOW 0x309 /* s390 vector registers 0-15 upper half */ #define NT_S390_VXRS_HIGH 0x30a /* s390 vector registers 16-31 */ #define NT_S390_GS_CB 0x30b /* s390 guarded storage registers */ #define NT_S390_GS_BC 0x30c /* s390 guarded storage broadcast control block */ #define NT_S390_RI_CB 0x30d /* s390 runtime instrumentation */ #define NT_ARM_VFP 0x400 /* ARM VFP/NEON registers */ #define NT_ARM_TLS 0x401 /* ARM TLS register */ #define NT_ARM_HW_BREAK 0x402 /* ARM hardware breakpoint registers */ #define NT_ARM_HW_WATCH 0x403 /* ARM hardware watchpoint registers */ #define NT_ARM_SYSTEM_CALL 0x404 /* ARM system call number */ #define NT_ARM_SVE 0x405 /* ARM Scalable Vector Extension registers */ #define NT_ARM_PAC_MASK 0x406 /* ARM pointer authentication code masks */ #define NT_ARM_PACA_KEYS 0x407 /* ARM pointer authentication address keys */ #define NT_ARM_PACG_KEYS 0x408 /* ARM pointer authentication generic key */ #define NT_ARM_TAGGED_ADDR_CTRL 0x409 /* arm64 tagged address control (prctl()) */ #define NT_ARC_V2 0x600 /* ARCv2 accumulator/extra registers */ #define NT_VMCOREDD 0x700 /* Vmcore Device Dump Note */ #define NT_MIPS_DSP 0x800 /* MIPS DSP ASE registers */ #define NT_MIPS_FP_MODE 0x801 /* MIPS floating-point mode */ #define NT_MIPS_MSA 0x802 /* MIPS SIMD registers */ /* Note types with note name "GNU" */ #define NT_GNU_PROPERTY_TYPE_0 5 /* Note header in a PT_NOTE section */ typedef struct elf32_note { Elf32_Word n_namesz; /* Name size */ Elf32_Word n_descsz; /* Content size */ Elf32_Word n_type; /* Content type */ } Elf32_Nhdr; /* Note header in a PT_NOTE section */ typedef struct elf64_note { Elf64_Word n_namesz; /* Name size */ Elf64_Word n_descsz; /* Content size */ Elf64_Word n_type; /* Content type */ } Elf64_Nhdr; /* .note.gnu.property types for EM_AARCH64: */ #define GNU_PROPERTY_AARCH64_FEATURE_1_AND 0xc0000000 /* Bits for GNU_PROPERTY_AARCH64_FEATURE_1_BTI */ #define GNU_PROPERTY_AARCH64_FEATURE_1_BTI (1U << 0) #endif /* _LINUX_ELF_H */