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/**************************** elf.h *********************************** * Author: Agner Fog * Date created: 2006-07-18 * Last modified: 2017-04-17 * Version: 1.00 * Project: Assembler and disassembler for ForwardCom instruction set * Module: elf.h * Description: * Header file for definition of structures in 32 and 64 bit ELF object file * format. * * Copyright 2006-2017 GNU General Public License http://www.gnu.org/licenses *****************************************************************************/ #pragma once /********************** FILE HEADER **********************/ struct Elf32_Ehdr { uint8_t e_ident[16]; // Magic number and other info uint16_t e_type; // Object file type uint16_t e_machine; // Architecture uint32_t e_version; // Object file version uint32_t e_entry; // Entry point virtual address uint32_t e_phoff; // Program header table file offset uint32_t e_shoff; // Section header table file offset uint32_t e_flags; // Processor-specific flags uint16_t e_ehsize; // ELF header size in bytes uint16_t e_phentsize; // Program header table entry size uint16_t e_phnum; // Program header table entry count uint16_t e_shentsize; // Section header table entry size uint16_t e_shnum; // Section header table entry count uint16_t e_shstrndx; // Section header string table index }; struct Elf64_Ehdr { uint8_t e_ident[16]; // Magic number and other info uint16_t e_type; // Object file type uint16_t e_machine; // Architecture uint32_t e_version; // Object file version uint64_t e_entry; // Entry point virtual address uint64_t e_phoff; // Program header table file offset uint64_t e_shoff; // Section header table file offset uint32_t e_flags; // Processor-specific flags uint16_t e_ehsize; // ELF header size in bytes uint16_t e_phentsize; // Program header table entry size uint16_t e_phnum; // Program header table entry count uint16_t e_shentsize; // Section header table entry size uint16_t e_shnum; // Section header table entry count uint16_t e_shstrndx; // Section header string table index }; /* Fields in the e_ident array. The EI_* macros are indices into the array. The macros under each EI_* macro are the values the byte may have. */ /* Conglomeration of the identification bytes, for easy testing as a word. */ #define ELFMAG "\177ELF" #define EI_CLASS 4 /* File class byte index */ #define ELFCLASSNONE 0 /* Invalid class */ #define ELFCLASS32 1 /* 32-bit objects */ #define ELFCLASS64 2 /* 64-bit objects */ #define ELFCLASSNUM 3 #define EI_DATA 5 /* Data encoding byte index */ #define ELFDATANONE 0 /* Invalid data encoding */ #define ELFDATA2LSB 1 /* 2's complement, little endian */ #define ELFDATA2MSB 2 /* 2's complement, big endian */ #define ELFDATANUM 3 #define EI_VERSION 6 /* File version byte index */ /* Value must be EV_CURRENT */ #define EI_OSABI 7 /* OS ABI identification */ #define ELFOSABI_SYSV 0 /* UNIX System V ABI */ #define ELFOSABI_HPUX 1 /* HP-UX */ #define ELFOSABI_ARM 97 /* ARM */ #define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */ #define EI_ABIVERSION 8 /* ABI version */ #define EI_PAD 9 /* Byte index of padding bytes */ /* Legal values for e_type (object file type). */ #define ET_NONE 0 /* No file type */ #define ET_REL 1 /* Relocatable file */ #define ET_EXEC 2 /* Executable file */ #define ET_DYN 3 /* Shared object file */ #define ET_CORE 4 /* Core file */ #define ET_NUM 5 /* Number of defined types */ #define ET_LOOS 0xfe00 /* OS-specific range start */ #define ET_HIOS 0xfeff /* OS-specific range end */ #define ET_LOPROC 0xff00 /* Processor-specific range start */ #define ET_HIPROC 0xffff /* Processor-specific range end */ /* Legal values for e_machine (architecture). */ #define EM_NONE 0 /* No machine */ #define EM_M32 1 /* AT&T WE 32100 */ #define EM_SPARC 2 /* SUN SPARC */ #define EM_386 3 /* Intel 80386 */ #define EM_68K 4 /* Motorola m68k family */ #define EM_88K 5 /* Motorola m88k family */ #define EM_860 7 /* Intel 80860 */ #define EM_MIPS 8 /* MIPS R3000 big-endian */ #define EM_S370 9 /* IBM System/370 */ #define EM_MIPS_RS3_LE 10 /* MIPS R3000 little-endian */ #define EM_PARISC 15 /* HPPA */ #define EM_VPP500 17 /* Fujitsu VPP500 */ #define EM_SPARC32PLUS 18 /* Sun's "v8plus" */ #define EM_960 19 /* Intel 80960 */ #define EM_PPC 20 /* PowerPC */ #define EM_PPC64 21 /* PowerPC 64-bit */ #define EM_S390 22 /* IBM S390 */ #define EM_V800 36 /* NEC V800 series */ #define EM_FR20 37 /* Fujitsu FR20 */ #define EM_RH32 38 /* TRW RH-32 */ #define EM_RCE 39 /* Motorola RCE */ #define EM_ARM 40 /* ARM */ #define EM_FAKE_ALPHA 41 /* Digital Alpha */ #define EM_SH 42 /* Hitachi SH */ #define EM_SPARCV9 43 /* SPARC v9 64-bit */ #define EM_TRICORE 44 /* Siemens Tricore */ #define EM_ARC 45 /* Argonaut RISC Core */ #define EM_H8_300 46 /* Hitachi H8/300 */ #define EM_H8_300H 47 /* Hitachi H8/300H */ #define EM_H8S 48 /* Hitachi H8S */ #define EM_H8_500 49 /* Hitachi H8/500 */ #define EM_IA_64 50 /* Intel Merced */ #define EM_MIPS_X 51 /* Stanford MIPS-X */ #define EM_COLDFIRE 52 /* Motorola Coldfire */ #define EM_68HC12 53 /* Motorola M68HC12 */ #define EM_MMA 54 /* Fujitsu MMA Multimedia Accelerator*/ #define EM_PCP 55 /* Siemens PCP */ #define EM_NCPU 56 /* Sony nCPU embeeded RISC */ #define EM_NDR1 57 /* Denso NDR1 microprocessor */ #define EM_STARCORE 58 /* Motorola Start*Core processor */ #define EM_ME16 59 /* Toyota ME16 processor */ #define EM_ST100 60 /* STMicroelectronic ST100 processor */ #define EM_TINYJ 61 /* Advanced Logic Corp. Tinyj emb.fam*/ #define EM_X86_64 62 /* AMD x86-64 architecture */ #define EM_PDSP 63 /* Sony DSP Processor */ #define EM_FX66 66 /* Siemens FX66 microcontroller */ #define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 mc */ #define EM_ST7 68 /* STmicroelectronics ST7 8 bit mc */ #define EM_68HC16 69 /* Motorola MC68HC16 microcontroller */ #define EM_68HC11 70 /* Motorola MC68HC11 microcontroller */ #define EM_68HC08 71 /* Motorola MC68HC08 microcontroller */ #define EM_68HC05 72 /* Motorola MC68HC05 microcontroller */ #define EM_SVX 73 /* Silicon Graphics SVx */ #define EM_AT19 74 /* STMicroelectronics ST19 8 bit mc */ #define EM_VAX 75 /* Digital VAX */ #define EM_CRIS 76 /* Axis Communications 32-bit embedded processor */ #define EM_JAVELIN 77 /* Infineon Technologies 32-bit embedded processor */ #define EM_FIREPATH 78 /* Element 14 64-bit DSP Processor */ #define EM_ZSP 79 /* LSI Logic 16-bit DSP Processor */ #define EM_MMIX 80 /* Donald Knuth's educational 64-bit processor */ #define EM_HUANY 81 /* Harvard University machine-independent object files */ #define EM_PRISM 82 /* SiTera Prism */ #define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */ #define EM_FR30 84 /* Fujitsu FR30 */ #define EM_D10V 85 /* Mitsubishi D10V */ #define EM_D30V 86 /* Mitsubishi D30V */ #define EM_V850 87 /* NEC v850 */ #define EM_M32R 88 /* Mitsubishi M32R */ #define EM_MN10300 89 /* Matsushita MN10300 */ #define EM_MN10200 90 /* Matsushita MN10200 */ #define EM_PJ 91 /* picoJava */ #define EM_NUM 92 #define EM_ALPHA 0x9026 /* Legal values for e_version (version). */ #define EV_NONE 0 /* Invalid ELF version */ #define EV_CURRENT 1 /* Current version */ #define EV_NUM 2 /* Section header. */ struct Elf32_Shdr { uint32_t sh_name; // Section name (string tbl index) uint32_t sh_type; // Section type uint32_t sh_flags; // Section flags uint32_t sh_addr; // Section virtual addr at execution uint32_t sh_offset; // Section file offset uint32_t sh_size; // Section size in bytes uint32_t sh_link; // Link to another section uint32_t sh_info; // Additional section information uint32_t sh_addralign; // Section alignment uint32_t sh_entsize; // Entry size if section holds table }; struct Elf64_Shdr { uint32_t sh_name; // Section name (string tbl index) uint32_t sh_type; // Section type uint64_t sh_flags; // Section flags uint64_t sh_addr; // Section virtual addr at execution uint64_t sh_offset; // Section file offset uint64_t sh_size; // Section size in bytes uint32_t sh_link; // Link to another section uint32_t sh_info; // Additional section information uint64_t sh_addralign; // Section alignment uint64_t sh_entsize; // Entry size if section holds table }; /* Special section indices. */ #define SHN_UNDEF 0 // Undefined section #define SHN_LORESERVE ((int16_t)0xff00) // Start of reserved indices #define SHN_LOPROC ((int16_t)0xff00) // Start of processor-specific #define SHN_HIPROC ((int16_t)0xff1f) // End of processor-specific #define SHN_LOOS ((int16_t)0xff20) // Start of OS-specific #define SHN_HIOS ((int16_t)0xff3f) // End of OS-specific #define SHN_ABS ((int16_t)0xfff1) // Associated symbol is absolute #define SHN_COMMON ((int16_t)0xfff2) // Associated symbol is common #define SHN_XINDEX ((int16_t)0xffff) // Index is in extra table #define SHN_HIRESERVE ((int16_t)0xffff) // End of reserved indices // Legal values for sh_type (section type). #define SHT_NULL 0 // Section header table entry unused #define SHT_PROGBITS 1 // Program data #define SHT_SYMTAB 2 // Symbol table #define SHT_STRTAB 3 // String table #define SHT_RELA 4 // Relocation entries with addends. Warning: Works only in 64 bit mode in my tests! #define SHT_HASH 5 // Symbol hash table #define SHT_DYNAMIC 6 // Dynamic linking information #define SHT_NOTE 7 // Notes #define SHT_NOBITS 8 // Program space with no data (bss) #define SHT_REL 9 // Relocation entries, no addends #define SHT_SHLIB 10 // Reserved #define SHT_DYNSYM 11 // Dynamic linker symbol table #define SHT_INIT_ARRAY 14 // Array of constructors #define SHT_FINI_ARRAY 15 // Array of destructors #define SHT_PREINIT_ARRAY 16 // Array of pre-constructors #define SHT_GROUP 17 // Section group #define SHT_SYMTAB_SHNDX 18 // Extended section indeces #define SHT_NUM 19 // Number of defined types. #define SHT_LOOS 0x60000000 // Start OS-specific #define SHT_CHECKSUM 0x6ffffff8 // Checksum for DSO content. #define SHT_LOSUNW 0x6ffffffa // Sun-specific low bound. #define SHT_SUNW_move 0x6ffffffa #define SHT_SUNW_COMDAT 0x6ffffffb #define SHT_SUNW_syminfo 0x6ffffffc #define SHT_GNU_verdef 0x6ffffffd // Version definition section. #define SHT_GNU_verneed 0x6ffffffe // Version needs section. #define SHT_GNU_versym 0x6fffffff // Version symbol table. #define SHT_HISUNW 0x6fffffff // Sun-specific high bound. #define SHT_HIOS 0x6fffffff // End OS-specific type #define SHT_LOPROC 0x70000000 // Start of processor-specific #define SHT_HIPROC 0x7fffffff // End of processor-specific #define SHT_LOUSER 0x80000000 // Start of application-specific #define SHT_HIUSER 0x8fffffff // End of application-specific #define SHT_REMOVE_ME 0xffffff99 // Specific to objconv program: Removed debug or exception handler section // Legal values for sh_flags (section flags). #define SHF_WRITE (1 << 0) // Writable #define SHF_ALLOC (1 << 1) // Occupies memory during execution #define SHF_EXECINSTR (1 << 2) // Executable #define SHF_MERGE (1 << 4) // Might be merged #define SHF_STRINGS (1 << 5) // Contains nul-terminated strings #define SHF_INFO_LINK (1 << 6) // `sh_info' contains SHT index #define SHF_LINK_ORDER (1 << 7) // Preserve order after combining #define SHF_OS_NONCONFORMING (1 << 8) // Non-standard OS specific handling required #define SHF_MASKOS 0x0ff00000 // OS-specific. #define SHF_MASKPROC 0xf0000000 // Processor-specific /* Section group handling. */ #define GRP_COMDAT 0x1 /* Mark group as COMDAT. */ /* Symbol table entry. */ struct Elf32_Sym { uint32_t st_name; // Symbol name (string tbl index) uint32_t st_value; // Symbol value uint32_t st_size; // Symbol size uint8_t st_type: 4, // Symbol type st_bind: 4; // Symbol binding uint8_t st_other; // Symbol visibility uint16_t st_shndx; // Section index }; struct Elf64_Sym { uint32_t st_name; // Symbol name (string tbl index) uint8_t st_type: 4, // Symbol type st_bind: 4; // Symbol binding uint8_t st_other; // Symbol visibility uint16_t st_shndx; // Section index uint64_t st_value; // Symbol value uint64_t st_size; // Symbol size }; /* The syminfo section if available contains additional information about every dynamic symbol. */ struct Elf32_Syminfo { uint16_t si_boundto; /* Direct bindings, symbol bound to */ uint16_t si_flags; /* Per symbol flags */ }; struct Elf64_Syminfo { uint16_t si_boundto; /* Direct bindings, symbol bound to */ uint16_t si_flags; /* Per symbol flags */ }; /* Possible values for si_boundto. */ #define SYMINFO_BT_SELF 0xffff /* Symbol bound to self */ #define SYMINFO_BT_PARENT 0xfffe /* Symbol bound to parent */ #define SYMINFO_BT_LOWRESERVE 0xff00 /* Beginning of reserved entries */ /* Possible bitmasks for si_flags. */ #define SYMINFO_FLG_DIRECT 0x0001 /* Direct bound symbol */ #define SYMINFO_FLG_PASSTHRU 0x0002 /* Pass-thru symbol for translator */ #define SYMINFO_FLG_COPY 0x0004 /* Symbol is a copy-reloc */ #define SYMINFO_FLG_LAZYLOAD 0x0008 /* Symbol bound to object to be lazy loaded */ /* Syminfo version values. */ #define SYMINFO_NONE 0 #define SYMINFO_CURRENT 1 #define SYMINFO_NUM 2 /* Special section index. */ #define SHN_UNDEF 0 /* No section, undefined symbol. */ // How to extract and insert information held in the st_info field. // Both Elf32_Sym and Elf64_Sym use the same one-byte st_info field. //#define ELF32_ST_BIND(val) (((uint8_t) (val)) >> 4) //#define ELF32_ST_TYPE(val) ((val) & 0xf) //#define ELF32_ST_INFO(bind,type) (((bind) << 4) + ((type) & 0xf)) // Legal values for ST_BIND subfield of st_info (symbol binding). #define STB_LOCAL 0 // Local symbol #define STB_GLOBAL 1 // Global symbol #define STB_WEAK 2 // Weak symbol #define STB_NUM 3 // Number of defined types. #define STB_LOOS 10 // Start of OS-specific #define STB_HIOS 12 // End of OS-specific #define STB_LOPROC 13 // Start of processor-specific #define STB_HIPROC 15 // End of processor-specific // Legal values for ST_TYPE subfield of st_info (symbol type). #define STT_NOTYPE 0 // Symbol type is unspecified #define STT_OBJECT 1 // Symbol is a data object #define STT_FUNC 2 // Symbol is a code object #define STT_SECTION 3 // Symbol associated with a section #define STT_FILE 4 // Symbol's name is file name #define STT_COMMON 5 // Symbol is a common data object #define STT_NUM 6 // Number of defined types. #define STT_LOOS 10 // Start of OS-specific #define STT_GNU_IFUNC 10 // Symbol is an indirect code object (function dispatcher) #define STT_HIOS 12 // End of OS-specific #define STT_LOPROC 13 // Start of processor-specific #define STT_HIPROC 15 // End of processor-specific /* Symbol table indices are found in the hash buckets and chain table of a symbol hash table section. This special index value indicates the end of a chain, meaning no further symbols are found in that bucket. */ #define STN_UNDEF 0 /* End of a chain. */ /* How to extract and insert information held in the st_other field. */ #define ELF32_ST_VISIBILITY(o) ((o) & 0x03) /* For ELF64 the definitions are the same. */ #define ELF64_ST_VISIBILITY(o) ELF32_ST_VISIBILITY (o) /* Symbol visibility specification encoded in the st_other field. */ #define STV_DEFAULT 0 /* Default symbol visibility rules */ #define STV_INTERNAL 1 /* Processor specific hidden class */ #define STV_HIDDEN 2 /* Sym unavailable in other modules */ #define STV_PROTECTED 3 /* Not preemptible, not exported */ // Relocation table entry structures // How to extract and insert information held in the r_info field. //#define ELF32_R_SYM(val) ((val) >> 8) //#define ELF32_R_TYPE(val) ((val) & 0xff) //#define ELF32_R_INFO(sym,type) (((sym) << 8) + ((type) & 0xff)) //#define ELF64_R_SYM(i) ((uint32_t)((i) >> 32)) //#define ELF64_R_TYPE(i) ((i) & 0xffffffff) //#define ELF64_R_INFO(sym,type) ((((uint64_t) (sym)) << 32) + (type)) // Relocation table entry without addend (in section of type SHT_REL) struct Elf32_Rel { uint32_t r_offset; // Address uint32_t r_type: 8, // Relocation type r_sym: 24; // Symbol index }; struct Elf64_Rel { uint64_t r_offset; // Address uint32_t r_type; // Relocation type uint32_t r_sym; // Symbol index }; // Relocation table entry with addend (in section of type SHT_RELA) // Warning: Elf32_Rela doesn't work in any of the systems I have tried. // Use Elf32_Rel instead with addend in relocated field. // Use Elf64_Rela in 64 bit mode. Elf64_Rel not accepted? struct Elf32_Rela { uint32_t r_offset; // Address uint32_t r_type: 8, // Relocation type r_sym: 24; // Symbol index int32_t r_addend; // Addend }; struct Elf64_Rela { uint64_t r_offset; // Address uint32_t r_type; // Relocation type uint32_t r_sym; // Symbol index int64_t r_addend; // Addend }; // i386 Relocation types #define R_386_NONE 0 // No reloc #define R_386_32 1 // Direct 32 bit #define R_386_PC32 2 // Self-relative 32 bit (not EIP relative in the sense used in COFF files) #define R_386_GOT32 3 // 32 bit GOT entry #define R_386_PLT32 4 // 32 bit PLT address #define R_386_COPY 5 // Copy symbol at runtime #define R_386_GLOB_DAT 6 // Create GOT entry #define R_386_JMP_SLOT 7 // Create PLT entry #define R_386_RELATIVE 8 // Adjust by program base #define R_386_GOTOFF 9 // 32 bit offset to GOT #define R_386_GOTPC 10 // 32 bit self relative offset to GOT #define R_386_IRELATIVE 42 // Reference to PLT entry of indirect function (STT_GNU_IFUNC) //#define R_386_NUM 11 // Number of entries // AMD x86-64 relocation types #define R_X86_64_NONE 0 // No reloc #define R_X86_64_64 1 // Direct 64 bit #define R_X86_64_PC32 2 // Self relative 32 bit signed (not RIP relative in the sense used in COFF files) #define R_X86_64_GOT32 3 // 32 bit GOT entry #define R_X86_64_PLT32 4 // 32 bit PLT address #define R_X86_64_COPY 5 // Copy symbol at runtime #define R_X86_64_GLOB_DAT 6 // Create GOT entry #define R_X86_64_JUMP_SLOT 7 // Create PLT entry #define R_X86_64_RELATIVE 8 // Adjust by program base #define R_X86_64_GOTPCREL 9 // 32 bit signed self relative offset to GOT #define R_X86_64_32 10 // Direct 32 bit zero extended #define R_X86_64_32S 11 // Direct 32 bit sign extended #define R_X86_64_16 12 // Direct 16 bit zero extended #define R_X86_64_PC16 13 // 16 bit sign extended self relative #define R_X86_64_8 14 // Direct 8 bit sign extended #define R_X86_64_PC8 15 // 8 bit sign extended self relative #define R_X86_64_IRELATIVE 37 // Reference to PLT entry of indirect function (STT_GNU_IFUNC) //#define R_X86_64_NUM 16 // Number of entries // Pseudo-record when ELF is used as intermediary between COFF and MachO: #define R_UNSUPPORTED_IMAGEREL 21 // Image-relative not supported // Program segment header. struct Elf32_Phdr { uint32_t p_type; /* Segment type */ uint32_t p_offset; /* Segment file offset */ uint32_t p_vaddr; /* Segment virtual address */ uint32_t p_paddr; /* Segment physical address */ uint32_t p_filesz; /* Segment size in file */ uint32_t p_memsz; /* Segment size in memory */ uint32_t p_flags; /* Segment flags */ uint32_t p_align; /* Segment alignment */ }; struct Elf64_Phdr { uint32_t p_type; /* Segment type */ uint32_t p_flags; /* Segment flags */ uint64_t p_offset; /* Segment file offset */ uint64_t p_vaddr; /* Segment virtual address */ uint64_t p_paddr; /* Segment physical address */ uint64_t p_filesz; /* Segment size in file */ uint64_t p_memsz; /* Segment size in memory */ uint64_t p_align; /* Segment alignment */ }; /* Legal values for p_type (segment type). */ #define PT_NULL 0 /* Program header table entry unused */ #define PT_LOAD 1 /* Loadable program segment */ #define PT_DYNAMIC 2 /* Dynamic linking information */ #define PT_INTERP 3 /* Program interpreter */ #define PT_NOTE 4 /* Auxiliary information */ #define PT_SHLIB 5 /* Reserved */ #define PT_PHDR 6 /* Entry for header table itself */ #define PT_NUM 7 /* Number of defined types */ #define PT_LOOS 0x60000000 /* Start of OS-specific */ #define PT_HIOS 0x6fffffff /* End of OS-specific */ #define PT_LOPROC 0x70000000 /* Start of processor-specific */ #define PT_HIPROC 0x7fffffff /* End of processor-specific */ /* Legal values for p_flags (segment flags). */ #define PF_X (1 << 0) /* Segment is executable */ #define PF_W (1 << 1) /* Segment is writable */ #define PF_R (1 << 2) /* Segment is readable */ #define PF_MASKOS 0x0ff00000 /* OS-specific */ #define PF_MASKPROC 0xf0000000 /* Processor-specific */ /* Legal values for note segment descriptor types for core files. */ #define NT_PRSTATUS 1 /* Contains copy of prstatus struct */ #define NT_FPREGSET 2 /* Contains copy of fpregset struct */ #define NT_PRPSINFO 3 /* Contains copy of prpsinfo struct */ #define NT_PRXREG 4 /* Contains copy of prxregset struct */ #define NT_PLATFORM 5 /* String from sysinfo(SI_PLATFORM) */ #define NT_AUXV 6 /* Contains copy of auxv array */ #define NT_GWINDOWS 7 /* Contains copy of gwindows struct */ #define NT_PSTATUS 10 /* Contains copy of pstatus struct */ #define NT_PSINFO 13 /* Contains copy of psinfo struct */ #define NT_PRCRED 14 /* Contains copy of prcred struct */ #define NT_UTSNAME 15 /* Contains copy of utsname struct */ #define NT_LWPSTATUS 16 /* Contains copy of lwpstatus struct */ #define NT_LWPSINFO 17 /* Contains copy of lwpinfo struct */ #define NT_PRFPXREG 20 /* Contains copy of fprxregset struct*/ /* Legal values for the note segment descriptor types for object files. */ #define NT_VERSION 1 /* Contains a version string. */ /* Dynamic section entry. */ struct Elf32_Dyn { int32_t d_tag; /* Dynamic entry type */ union { uint32_t d_val; /* Integer value */ uint32_t d_ptr; /* Address value */ } d_un; }; struct Elf64_Dyn { int64_t d_tag; /* Dynamic entry type */ union { uint64_t d_val; /* Integer value */ uint64_t d_ptr; /* Address value */ } d_un; }; /* Legal values for d_tag (dynamic entry type). */ #define DT_NULL 0 /* Marks end of dynamic section */ #define DT_NEEDED 1 /* Name of needed library */ #define DT_PLTRELSZ 2 /* Size in bytes of PLT relocs */ #define DT_PLTGOT 3 /* Processor defined value */ #define DT_HASH 4 /* Address of symbol hash table */ #define DT_STRTAB 5 /* Address of string table */ #define DT_SYMTAB 6 /* Address of symbol table */ #define DT_RELA 7 /* Address of Rela relocs */ #define DT_RELASZ 8 /* Total size of Rela relocs */ #define DT_RELAENT 9 /* Size of one Rela reloc */ #define DT_STRSZ 10 /* Size of string table */ #define DT_SYMENT 11 /* Size of one symbol table entry */ #define DT_INIT 12 /* Address of init function */ #define DT_FINI 13 /* Address of termination function */ #define DT_SONAME 14 /* Name of shared object */ #define DT_RPATH 15 /* Library search path (deprecated) */ #define DT_SYMBOLIC 16 /* Start symbol search here */ #define DT_REL 17 /* Address of Rel relocs */ #define DT_RELSZ 18 /* Total size of Rel relocs */ #define DT_RELENT 19 /* Size of one Rel reloc */ #define DT_PLTREL 20 /* Type of reloc in PLT */ #define DT_DEBUG 21 /* For debugging; unspecified */ #define DT_TEXTREL 22 /* Reloc might modify .text */ #define DT_JMPREL 23 /* Address of PLT relocs */ #define DT_BIND_NOW 24 /* Process relocations of object */ #define DT_INIT_ARRAY 25 /* Array with addresses of init fct */ #define DT_FINI_ARRAY 26 /* Array with addresses of fini fct */ #define DT_INIT_ARRAYSZ 27 /* Size in bytes of DT_INIT_ARRAY */ #define DT_FINI_ARRAYSZ 28 /* Size in bytes of DT_FINI_ARRAY */ #define DT_RUNPATH 29 /* Library search path */ #define DT_FLAGS 30 /* Flags for the object being loaded */ #define DT_ENCODING 32 /* Start of encoded range */ #define DT_PREINIT_ARRAY 32 /* Array with addresses of preinit fct*/ #define DT_PREINIT_ARRAYSZ 33 /* size in bytes of DT_PREINIT_ARRAY */ #define DT_NUM 34 /* Number used */ #define DT_LOOS 0x60000000 /* Start of OS-specific */ #define DT_HIOS 0x6fffffff /* End of OS-specific */ #define DT_LOPROC 0x70000000 /* Start of processor-specific */ #define DT_HIPROC 0x7fffffff /* End of processor-specific */ #define DT_PROCNUM DT_MIPS_NUM /* Most used by any processor */ /* DT_* entries which fall between DT_VALRNGHI & DT_VALRNGLO use the Dyn.d_un.d_val field of the Elf*_Dyn structure. This follows Sun's approach. */ #define DT_VALRNGLO 0x6ffffd00 #define DT_CHECKSUM 0x6ffffdf8 #define DT_PLTPADSZ 0x6ffffdf9 #define DT_MOVEENT 0x6ffffdfa #define DT_MOVESZ 0x6ffffdfb #define DT_FEATURE_1 0x6ffffdfc /* Feature selection (DTF_*). */ #define DT_POSFLAG_1 0x6ffffdfd /* Flags for DT_* entries, effecting the following DT_* entry. */ #define DT_SYMINSZ 0x6ffffdfe /* Size of syminfo table (in bytes) */ #define DT_SYMINENT 0x6ffffdff /* Entry size of syminfo */ #define DT_VALRNGHI 0x6ffffdff /* DT_* entries which fall between DT_ADDRRNGHI & DT_ADDRRNGLO use the Dyn.d_un.d_ptr field of the Elf*_Dyn structure. If any adjustment is made to the ELF object after it has been built these entries will need to be adjusted. */ #define DT_ADDRRNGLO 0x6ffffe00 #define DT_SYMINFO 0x6ffffeff /* syminfo table */ #define DT_ADDRRNGHI 0x6ffffeff /* The versioning entry types. The next are defined as part of the GNU extension. */ #define DT_VERSYM 0x6ffffff0 #define DT_RELACOUNT 0x6ffffff9 #define DT_RELCOUNT 0x6ffffffa /* These were chosen by Sun. */ #define DT_FLAGS_1 0x6ffffffb /* State flags, see DF_1_* below. */ #define DT_VERDEF 0x6ffffffc /* Address of version definition table */ #define DT_VERDEFNUM 0x6ffffffd /* Number of version definitions */ #define DT_VERNEED 0x6ffffffe /* Address of table with needed versions */ #define DT_VERNEEDNUM 0x6fffffff /* Number of needed versions */ #define DT_VERSIONTAGIDX(tag) (DT_VERNEEDNUM - (tag)) /* Reverse order! */ #define DT_VERSIONTAGNUM 16 /* Sun added these machine-independent extensions in the "processor-specific" range. Be compatible. */ #define DT_AUXILIARY 0x7ffffffd /* Shared object to load before self */ #define DT_FILTER 0x7fffffff /* Shared object to get values from */ #define DT_EXTRATAGIDX(tag) ((uint32_t)-((int32_t) (tag) <<1>>1)-1) #define DT_EXTRANUM 3 /* Values of `d_un.d_val' in the DT_FLAGS entry. */ #define DF_ORIGIN 0x00000001 /* Object may use DF_ORIGIN */ #define DF_SYMBOLIC 0x00000002 /* Symbol resolutions starts here */ #define DF_TEXTREL 0x00000004 /* Object contains text relocations */ #define DF_BIND_NOW 0x00000008 /* No lazy binding for this object */ /* State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1 entry in the dynamic section. */ #define DF_1_NOW 0x00000001 /* Set RTLD_NOW for this object. */ #define DF_1_GLOBAL 0x00000002 /* Set RTLD_GLOBAL for this object. */ #define DF_1_GROUP 0x00000004 /* Set RTLD_GROUP for this object. */ #define DF_1_NODELETE 0x00000008 /* Set RTLD_NODELETE for this object.*/ #define DF_1_LOADFLTR 0x00000010 /* Trigger filtee loading at runtime.*/ #define DF_1_INITFIRST 0x00000020 /* Set RTLD_INITFIRST for this object*/ #define DF_1_NOOPEN 0x00000040 /* Set RTLD_NOOPEN for this object. */ #define DF_1_ORIGIN 0x00000080 /* $ORIGIN must be handled. */ #define DF_1_DIRECT 0x00000100 /* Direct binding enabled. */ #define DF_1_TRANS 0x00000200 #define DF_1_INTERPOSE 0x00000400 /* Object is used to interpose. */ #define DF_1_NODEFLIB 0x00000800 /* Ignore default lib search path. */ #define DF_1_NODUMP 0x00001000 #define DF_1_CONFALT 0x00002000 #define DF_1_ENDFILTEE 0x00004000 /* Flags for the feature selection in DT_FEATURE_1. */ #define DTF_1_PARINIT 0x00000001 #define DTF_1_CONFEXP 0x00000002 /* Flags in the DT_POSFLAG_1 entry effecting only the next DT_* entry. */ #define DF_P1_LAZYLOAD 0x00000001 /* Lazyload following object. */ #define DF_P1_GROUPPERM 0x00000002 /* Symbols from next object are not generally available. */ /* Version definition sections. */ struct Elf32_Verdef { uint16_t vd_version; /* Version revision */ uint16_t vd_flags; /* Version information */ uint16_t vd_ndx; /* Version Index */ uint16_t vd_cnt; /* Number of associated aux entries */ uint32_t vd_hash; /* Version name hash value */ uint32_t vd_aux; /* Offset in bytes to verdaux array */ uint32_t vd_next; /* Offset in bytes to next verdef entry */ }; struct Elf64_Verdef { uint16_t vd_version; /* Version revision */ uint16_t vd_flags; /* Version information */ uint16_t vd_ndx; /* Version Index */ uint16_t vd_cnt; /* Number of associated aux entries */ uint32_t vd_hash; /* Version name hash value */ uint32_t vd_aux; /* Offset in bytes to verdaux array */ uint32_t vd_next; /* Offset in bytes to next verdef entry */ }; /* Legal values for vd_version (version revision). */ #define VER_DEF_NONE 0 /* No version */ #define VER_DEF_CURRENT 1 /* Current version */ #define VER_DEF_NUM 2 /* Given version number */ /* Legal values for vd_flags (version information flags). */ #define VER_FLG_BASE 0x1 /* Version definition of file itself */ #define VER_FLG_WEAK 0x2 /* Weak version identifier */ /* Auxialiary version information. */ struct Elf32_Verdaux { uint32_t vda_name; /* Version or dependency names */ uint32_t vda_next; /* Offset in bytes to next verdaux entry */ }; struct Elf64_Verdaux { uint32_t vda_name; /* Version or dependency names */ uint32_t vda_next; /* Offset in bytes to next verdaux entry */ }; /* Version dependency section. */ struct Elf32_Verneed { uint16_t vn_version; /* Version of structure */ uint16_t vn_cnt; /* Number of associated aux entries */ uint32_t vn_file; /* Offset of filename for this dependency */ uint32_t vn_aux; /* Offset in bytes to vernaux array */ uint32_t vn_next; /* Offset in bytes to next verneed entry */ }; struct Elf64_Verneed { uint16_t vn_version; /* Version of structure */ uint16_t vn_cnt; /* Number of associated aux entries */ uint32_t vn_file; /* Offset of filename for this dependency */ uint32_t vn_aux; /* Offset in bytes to vernaux array */ uint32_t vn_next; /* Offset in bytes to next verneed entry */ }; /* Legal values for vn_version (version revision). */ #define VER_NEED_NONE 0 /* No version */ #define VER_NEED_CURRENT 1 /* Current version */ #define VER_NEED_NUM 2 /* Given version number */ /* Auxiliary needed version information. */ struct Elf32_Vernaux { uint32_t vna_hash; /* Hash value of dependency name */ uint16_t vna_flags; /* Dependency specific information */ uint16_t vna_other; /* Unused */ uint32_t vna_name; /* Dependency name string offset */ uint32_t vna_next; /* Offset in bytes to next vernaux entry */ }; struct Elf64_Vernaux { uint32_t vna_hash; /* Hash value of dependency name */ uint16_t vna_flags; /* Dependency specific information */ uint16_t vna_other; /* Unused */ uint32_t vna_name; /* Dependency name string offset */ uint32_t vna_next; /* Offset in bytes to next vernaux entry */ }; /* Legal values for vna_flags. */ #define VER_FLG_WEAK 0x2 /* Weak version identifier */ /* Note section contents. Each entry in the note section begins with a header of a fixed form. */ struct Elf32_Nhdr { uint32_t n_namesz; /* Length of the note's name. */ uint32_t n_descsz; /* Length of the note's descriptor. */ uint32_t n_type; /* Type of the note. */ }; struct Elf64_Nhdr { uint32_t n_namesz; /* Length of the note's name. */ uint32_t n_descsz; /* Length of the note's descriptor. */ uint32_t n_type; /* Type of the note. */ }; /* Known names of notes. */ /* Solaris entries in the note section have this name. */ #define ELF_NOTE_SOLARIS "SUNW Solaris" /* Note entries for GNU systems have this name. */ #define ELF_NOTE_GNU "GNU" /* Defined types of notes for Solaris. */ /* Value of descriptor (one word) is desired pagesize for the binary. */ #define ELF_NOTE_PAGESIZE_HINT 1 /* Defined note types for GNU systems. */ /* ABI information. The descriptor consists of words: word 0: OS descriptor word 1: major version of the ABI word 2: minor version of the ABI word 3: subminor version of the ABI */ #define ELF_NOTE_ABI 1 /* Known OSes. These value can appear in word 0 of an ELF_NOTE_ABI note section entry. */ #define ELF_NOTE_OS_LINUX 0 #define ELF_NOTE_OS_GNU 1 #define ELF_NOTE_OS_SOLARIS2 2 /* Move records. */ struct Elf32_Move { uint64_t m_value; /* Symbol value. */ uint32_t m_info; /* Size and index. */ uint32_t m_poffset; /* Symbol offset. */ uint16_t m_repeat; /* Repeat count. */ uint16_t m_stride; /* Stride info. */ }; struct Elf64_Move { uint64_t m_value; /* Symbol value. */ uint64_t m_info; /* Size and index. */ uint64_t m_poffset; /* Symbol offset. */ uint16_t m_repeat; /* Repeat count. */ uint16_t m_stride; /* Stride info. */ }; /* Macro to construct move records. */ #define ELF32_M_SYM(info) ((info) >> 8) #define ELF32_M_SIZE(info) ((uint8_t) (info)) #define ELF32_M_INFO(sym, size) (((sym) << 8) + (uint8_t) (size)) #define ELF64_M_SYM(info) ELF32_M_SYM (info) #define ELF64_M_SIZE(info) ELF32_M_SIZE (info) #define ELF64_M_INFO(sym, size) ELF32_M_INFO (sym, size) /********************** Strings **********************/ #define ELF_CONSTRUCTOR_NAME ".ctors" // Name of constructors segment // Macros listing all word-size dependent structures, used as template parameter list #define ELFSTRUCTURES TELF_Header, TELF_SectionHeader, TELF_Symbol, TELF_Relocation #define ELF32STRUCTURES Elf32_Ehdr, Elf32_Shdr, Elf32_Sym, Elf32_Rela #define ELF64STRUCTURES Elf64_Ehdr, Elf64_Shdr, Elf64_Sym, Elf64_Rela
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