| 1 | #ifndef ELF_H_INCLUDED |
| 2 | #define ELF_H_INCLUDED |
| 3 | |
| 4 | #include <stdint.h> |
| 5 | |
| 6 | /* Type for a 16-bit quantity. */ |
| 7 | typedef uint16_t Elf32_Half; |
| 8 | typedef uint16_t Elf64_Half; |
| 9 | |
| 10 | /* Types for signed and unsigned 32-bit quantities. */ |
| 11 | typedef uint32_t Elf32_Word; |
| 12 | typedef int32_t Elf32_Sword; |
| 13 | typedef uint32_t Elf64_Word; |
| 14 | typedef int32_t Elf64_Sword; |
| 15 | |
| 16 | /* Types for signed and unsigned 64-bit quantities. */ |
| 17 | typedef uint64_t Elf32_Xword; |
| 18 | typedef int64_t Elf32_Sxword; |
| 19 | typedef uint64_t Elf64_Xword; |
| 20 | typedef int64_t Elf64_Sxword; |
| 21 | |
| 22 | /* Type of addresses. */ |
| 23 | typedef uint32_t Elf32_Addr; |
| 24 | typedef uint64_t Elf64_Addr; |
| 25 | |
| 26 | /* Type of file offsets. */ |
| 27 | typedef uint32_t Elf32_Off; |
| 28 | typedef uint64_t Elf64_Off; |
| 29 | |
| 30 | /* Type for section indices, which are 16-bit quantities. */ |
| 31 | typedef uint16_t Elf32_Section; |
| 32 | typedef uint16_t Elf64_Section; |
| 33 | |
| 34 | /* Type for version symbol information. */ |
| 35 | typedef Elf32_Half Elf32_Versym; |
| 36 | typedef Elf64_Half Elf64_Versym; |
| 37 | |
| 38 | |
| 39 | /* The ELF file header. This appears at the start of every ELF file. */ |
| 40 | typedef struct { |
| 41 | unsigned char e_ident[16]; /* Magic number and other info */ |
| 42 | Elf32_Half e_type; /* Object file type */ |
| 43 | Elf32_Half e_machine; /* Architecture */ |
| 44 | Elf32_Word e_version; /* Object file version */ |
| 45 | Elf32_Addr e_entry; /* Entry point virtual address */ |
| 46 | Elf32_Off e_phoff; /* Program header table (usually follows elf header directly) file offset */ |
| 47 | Elf32_Off e_shoff; /* Section header table (at end of file) file offset */ |
| 48 | Elf32_Word e_flags; /* Processor-specific flags */ |
| 49 | Elf32_Half e_ehsize; /* ELF header size in bytes */ |
| 50 | Elf32_Half e_phentsize; /* Program header table entry size */ |
| 51 | Elf32_Half e_phnum; /* Program header table entry count */ |
| 52 | Elf32_Half e_shentsize; /* Section header table entry size */ |
| 53 | Elf32_Half e_shnum; /* Section header table entry count */ |
| 54 | Elf32_Half e_shstrndx; /* Section header string table index */ |
| 55 | } Elf32_Ehdr; |
| 56 | typedef struct { |
| 57 | unsigned char e_ident[16]; /* Magic number and other info */ |
| 58 | Elf64_Half e_type; /* Object file type */ |
| 59 | Elf64_Half e_machine; /* Architecture */ |
| 60 | Elf64_Word e_version; /* Object file version */ |
| 61 | Elf64_Addr e_entry; /* Entry point virtual address */ |
| 62 | Elf64_Off e_phoff; /* Program header table file offset */ |
| 63 | Elf64_Off e_shoff; /* Section header table file offset */ |
| 64 | Elf64_Word e_flags; /* Processor-specific flags */ |
| 65 | Elf64_Half e_ehsize; /* ELF header size in bytes */ |
| 66 | Elf64_Half e_phentsize; /* Program header table entry size */ |
| 67 | Elf64_Half e_phnum; /* Program header table entry count */ |
| 68 | Elf64_Half e_shentsize; /* Section header table entry size */ |
| 69 | Elf64_Half e_shnum; /* Section header table entry count */ |
| 70 | Elf64_Half e_shstrndx; /* Section header string table index */ |
| 71 | } Elf64_Ehdr; |
| 72 | |
| 73 | /* Section header entry. The number of section entries in the file are determined by the "e_shnum" field of the ELF header.*/ |
| 74 | typedef struct { |
| 75 | Elf32_Word sh_name; /* Section name (string tbl index) */ |
| 76 | Elf32_Word sh_type; /* Section type */ |
| 77 | Elf32_Word sh_flags; /* Section flags */ |
| 78 | Elf32_Addr sh_addr; /* Section virtual addr at execution */ |
| 79 | Elf32_Off sh_offset; /* Section file offset */ |
| 80 | Elf32_Word sh_size; /* Section size in bytes */ |
| 81 | Elf32_Word sh_link; /* Link to another section */ |
| 82 | Elf32_Word sh_info; /* Additional section information */ |
| 83 | Elf32_Word sh_addralign; /* Section alignment */ |
| 84 | Elf32_Word sh_entsize; /* Entry size if section holds table */ |
| 85 | } Elf32_Shdr; |
| 86 | typedef struct { |
| 87 | Elf64_Word sh_name; /* Section name (string tbl index) */ |
| 88 | Elf64_Word sh_type; /* Section type */ |
| 89 | Elf64_Xword sh_flags; /* Section flags */ |
| 90 | Elf64_Addr sh_addr; /* Section virtual addr at execution */ |
| 91 | Elf64_Off sh_offset; /* Section file offset */ |
| 92 | Elf64_Xword sh_size; /* Section size in bytes */ |
| 93 | Elf64_Word sh_link; /* Link to another section */ |
| 94 | Elf64_Word sh_info; /* Additional section information */ |
| 95 | Elf64_Xword sh_addralign; /* Section alignment */ |
| 96 | Elf64_Xword sh_entsize; /* Entry size if section holds table */ |
| 97 | } Elf64_Shdr; |
| 98 | |
| 99 | /* Legal values for sh_type (section type). */ |
| 100 | #define SHT_NULL 0 /* Section header table entry unused */ |
| 101 | #define SHT_PROGBITS 1 /* Program data */ |
| 102 | #define SHT_SYMTAB 2 /* Symbol table */ |
| 103 | #define SHT_STRTAB 3 /* String table */ |
| 104 | #define SHT_RELA 4 /* Relocation entries with addends */ |
| 105 | #define SHT_HASH 5 /* Symbol hash table */ |
| 106 | #define SHT_DYNAMIC 6 /* Dynamic linking information. Contains Elf32_Dyn/Elf64_Dyn entries. */ |
| 107 | #define SHT_NOTE 7 /* Notes */ |
| 108 | #define SHT_NOBITS 8 /* Program space with no data (bss) */ |
| 109 | #define SHT_REL 9 /* Relocation entries, no addends */ |
| 110 | #define SHT_SHLIB 10 /* Reserved */ |
| 111 | #define SHT_DYNSYM 11 /* Dynamic linker symbol table */ |
| 112 | #define SHT_INIT_ARRAY 14 /* Array of constructors */ |
| 113 | #define SHT_FINI_ARRAY 15 /* Array of destructors */ |
| 114 | #define SHT_PREINIT_ARRAY 16 /* Array of pre-constructors */ |
| 115 | #define SHT_GROUP 17 /* Section group */ |
| 116 | #define SHT_SYMTAB_SHNDX 18 /* Extended section indeces */ |
| 117 | #define SHT_NUM 19 /* Number of defined types. */ |
| 118 | #define SHT_LOOS 0x60000000 /* Start OS-specific. */ |
| 119 | #define SHT_GNU_ATTRIBUTES 0x6ffffff5 /* Object attributes. */ |
| 120 | #define SHT_GNU_HASH 0x6ffffff6 /* GNU-style hash table. */ |
| 121 | #define SHT_GNU_LIBLIST 0x6ffffff7 /* Prelink library list */ |
| 122 | #define SHT_CHECKSUM 0x6ffffff8 /* Checksum for DSO content. */ |
| 123 | #define SHT_LOSUNW 0x6ffffffa /* Sun-specific low bound. */ |
| 124 | #define SHT_SUNW_move 0x6ffffffa |
| 125 | #define SHT_SUNW_COMDAT 0x6ffffffb |
| 126 | #define SHT_SUNW_syminfo 0x6ffffffc |
| 127 | #define SHT_GNU_verdef 0x6ffffffd /* Version definition section. */ |
| 128 | #define SHT_GNU_verneed 0x6ffffffe /* Version needs section. */ |
| 129 | #define SHT_GNU_versym 0x6fffffff /* Version symbol table. */ |
| 130 | #define SHT_HISUNW 0x6fffffff /* Sun-specific high bound. */ |
| 131 | #define SHT_HIOS 0x6fffffff /* End OS-specific type */ |
| 132 | #define SHT_LOPROC 0x70000000 /* Start of processor-specific */ |
| 133 | #define SHT_HIPROC 0x7fffffff /* End of processor-specific */ |
| 134 | #define SHT_LOUSER 0x80000000 /* Start of application-specific */ |
| 135 | #define SHT_HIUSER 0x8fffffff /* End of application-specific */ |
| 136 | |
| 137 | /* Dynamic section entry. */ |
| 138 | typedef struct { |
| 139 | Elf32_Sword d_tag; /* Dynamic entry type */ |
| 140 | union { Elf32_Word d_val; Elf32_Addr d_ptr; } d_un; /* Integer or address value */ |
| 141 | } Elf32_Dyn; |
| 142 | typedef struct { |
| 143 | Elf64_Sxword d_tag; /* Dynamic entry type */ |
| 144 | union { Elf64_Xword d_val; Elf64_Addr d_ptr; } d_un; /* Integer or address value */ |
| 145 | } Elf64_Dyn; |
| 146 | |
| 147 | /* Legal values for d_tag (dynamic entry type). */ |
| 148 | #define DT_NULL 0 /* Marks end of dynamic section */ |
| 149 | #define DT_NEEDED 1 /* Name of needed library */ |
| 150 | #define DT_PLTRELSZ 2 /* Size in bytes of PLT relocs */ |
| 151 | #define DT_PLTGOT 3 /* Processor defined value */ |
| 152 | #define DT_HASH 4 /* Address of symbol hash table */ |
| 153 | #define DT_STRTAB 5 /* Address of string table */ |
| 154 | #define DT_SYMTAB 6 /* Address of symbol table */ |
| 155 | #define DT_RELA 7 /* Address of Rela relocs */ |
| 156 | #define DT_RELASZ 8 /* Total size of Rela relocs */ |
| 157 | #define DT_RELAENT 9 /* Size of one Rela reloc */ |
| 158 | #define DT_STRSZ 10 /* Size of string table */ |
| 159 | #define DT_SYMENT 11 /* Size of one symbol table entry */ |
| 160 | #define DT_INIT 12 /* Address of init function */ |
| 161 | #define DT_FINI 13 /* Address of termination function */ |
| 162 | #define DT_SONAME 14 /* Name of shared object */ |
| 163 | #define DT_RPATH 15 /* Library search path (deprecated) */ |
| 164 | #define DT_SYMBOLIC 16 /* Start symbol search here */ |
| 165 | #define DT_REL 17 /* Address of Rel relocs */ |
| 166 | #define DT_RELSZ 18 /* Total size of Rel relocs */ |
| 167 | #define DT_RELENT 19 /* Size of one Rel reloc */ |
| 168 | #define DT_PLTREL 20 /* Type of reloc in PLT */ |
| 169 | #define DT_DEBUG 21 /* For debugging; unspecified */ |
| 170 | #define DT_TEXTREL 22 /* Reloc might modify .text */ |
| 171 | #define DT_JMPREL 23 /* Address of PLT relocs */ |
| 172 | #define DT_BIND_NOW 24 /* Process relocations of object */ |
| 173 | #define DT_INIT_ARRAY 25 /* Array with addresses of init fct */ |
| 174 | #define DT_FINI_ARRAY 26 /* Array with addresses of fini fct */ |
| 175 | #define DT_INIT_ARRAYSZ 27 /* Size in bytes of DT_INIT_ARRAY */ |
| 176 | #define DT_FINI_ARRAYSZ 28 /* Size in bytes of DT_FINI_ARRAY */ |
| 177 | #define DT_RUNPATH 29 /* Library search path */ |
| 178 | #define DT_FLAGS 30 /* Flags for the object being loaded */ |
| 179 | #define DT_ENCODING 32 /* Start of encoded range */ |
| 180 | #define DT_PREINIT_ARRAY 32 /* Array with addresses of preinit fct*/ |
| 181 | #define DT_PREINIT_ARRAYSZ 33 /* size in bytes of DT_PREINIT_ARRAY */ |
| 182 | #define DT_NUM 34 /* Number used */ |
| 183 | #define DT_LOOS 0x6000000d /* Start of OS-specific */ |
| 184 | #define DT_HIOS 0x6ffff000 /* End of OS-specific */ |
| 185 | #define DT_VERDEF 0x6ffffffc |
| 186 | #define DT_VERDEFNUM 0x6ffffffd |
| 187 | #define DT_LOPROC 0x70000000 /* Start of processor-specific */ |
| 188 | #define DT_HIPROC 0x7fffffff /* End of processor-specific */ |
| 189 | |
| 190 | |
| 191 | /* Symbol table entry. */ |
| 192 | typedef struct { |
| 193 | Elf32_Word st_name; /* Symbol name (string tbl index) */ |
| 194 | Elf32_Addr st_value; /* Symbol value */ |
| 195 | Elf32_Word st_size; /* Symbol size */ |
| 196 | unsigned char st_info; /* Symbol type and binding */ |
| 197 | unsigned char st_other; /* Symbol visibility */ |
| 198 | Elf32_Section st_shndx; /* Section index */ |
| 199 | } Elf32_Sym; |
| 200 | |
| 201 | typedef struct { |
| 202 | Elf64_Word st_name; /* Symbol name (string tbl index) */ |
| 203 | unsigned char st_info; /* Symbol type and binding */ |
| 204 | unsigned char st_other; /* Symbol visibility */ |
| 205 | Elf64_Section st_shndx; /* Section index */ |
| 206 | Elf64_Addr st_value; /* Symbol value */ |
| 207 | Elf64_Xword st_size; /* Symbol size */ |
| 208 | } Elf64_Sym; |
| 209 | |
| 210 | |
| 211 | #endif |