1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef COURGETTE_ELF_TYPES_H_ 6 #define COURGETTE_ELF_TYPES_H_ 7 8 // 9 // This header defines various types from the ELF file spec, but no code 10 // related to using them. 11 // 12 13 typedef uint32 Elf32_Addr; // Unsigned program address 14 typedef uint16 Elf32_Half; // Unsigned medium integer 15 typedef uint32 Elf32_Off; // Unsigned file offset 16 typedef int32 Elf32_Sword; // Signed large integer 17 typedef uint32 Elf32_Word; // Unsigned large integer 18 19 20 // The header at the top of the file 21 struct Elf32_Ehdr { 22 unsigned char e_ident[16]; 23 Elf32_Half e_type; 24 Elf32_Half e_machine; 25 Elf32_Word e_version; 26 Elf32_Addr e_entry; 27 Elf32_Off e_phoff; 28 Elf32_Off e_shoff; 29 Elf32_Word e_flags; 30 Elf32_Half e_ehsize; 31 Elf32_Half e_phentsize; 32 Elf32_Half e_phnum; 33 Elf32_Half e_shentsize; 34 Elf32_Half e_shnum; 35 Elf32_Half e_shstrndx; 36 }; 37 38 // values for header->e_type 39 enum e_type_values { 40 ET_NONE = 0, // No file type 41 ET_REL = 1, // Relocatable file 42 ET_EXEC = 2, // Executable file 43 ET_DYN = 3, // Shared object file 44 ET_CORE = 4, // Core file 45 ET_LOPROC = 0xff00, // Processor-specific 46 ET_HIPROC = 0xfff // Processor-specific 47 }; 48 49 // values for header->e_machine 50 enum e_machine_values { 51 EM_NONE = 0, // No machine 52 EM_386 = 3, // Intel Architecture 53 EM_ARM = 40, // ARM Architecture 54 EM_x86_64 = 62, // Intel x86-64 Architecture 55 // Other values skipped 56 }; 57 58 // A section header in the section header table 59 struct Elf32_Shdr { 60 Elf32_Word sh_name; 61 Elf32_Word sh_type; 62 Elf32_Word sh_flags; 63 Elf32_Addr sh_addr; 64 Elf32_Off sh_offset; 65 Elf32_Word sh_size; 66 Elf32_Word sh_link; 67 Elf32_Word sh_info; 68 Elf32_Word sh_addralign; 69 Elf32_Word sh_entsize; 70 }; 71 72 // Values for the section type field in a section header 73 enum sh_type_values { 74 SHT_NULL = 0, 75 SHT_PROGBITS = 1, 76 SHT_SYMTAB = 2, 77 SHT_STRTAB = 3, 78 SHT_RELA = 4, 79 SHT_HASH = 5, 80 SHT_DYNAMIC = 6, 81 SHT_NOTE = 7, 82 SHT_NOBITS = 8, 83 SHT_REL = 9, 84 SHT_SHLIB = 10, 85 SHT_DYNSYM = 11, 86 SHT_INIT_ARRAY = 14, 87 SHT_FINI_ARRAY = 15, 88 SHT_LOPROC = 0x70000000, 89 SHT_HIPROC = 0x7fffffff, 90 SHT_LOUSER = 0x80000000, 91 SHT_HIUSER = 0xffffffff, 92 }; 93 94 struct Elf32_Phdr { 95 Elf32_Word p_type; 96 Elf32_Off p_offset; 97 Elf32_Addr p_vaddr; 98 Elf32_Addr p_paddr; 99 Elf32_Word p_filesz; 100 Elf32_Word p_memsz; 101 Elf32_Word p_flags; 102 Elf32_Word p_align; 103 }; 104 105 // Values for the segment type field in a program segment header 106 enum ph_type_values { 107 PT_NULL = 0, 108 PT_LOAD = 1, 109 PT_DYNAMIC = 2, 110 PT_INTERP = 3, 111 PT_NOTE = 4, 112 PT_SHLIB = 5, 113 PT_PHDR = 6, 114 PT_LOPROC = 0x70000000, 115 PT_HIPROC = 0x7fffffff 116 }; 117 118 struct Elf32_Rel { 119 Elf32_Addr r_offset; 120 Elf32_Word r_info; 121 }; 122 123 struct Elf32_Rela { 124 Elf32_Addr r_offset; 125 Elf32_Word r_info; 126 Elf32_Sword r_addend; 127 }; 128 129 enum elf32_rel_386_type_values { 130 R_386_NONE = 0, 131 R_386_32 = 1, 132 R_386_PC32 = 2, 133 R_386_GOT32 = 3, 134 R_386_PLT32 = 4, 135 R_386_COPY = 5, 136 R_386_GLOB_DAT = 6, 137 R_386_JMP_SLOT = 7, 138 R_386_RELATIVE = 8, 139 R_386_GOTOFF = 9, 140 R_386_GOTPC = 10, 141 R_386_TLS_TPOFF = 14, 142 }; 143 144 enum elf32_rel_arm_type_values { 145 R_ARM_RELATIVE = 23, 146 }; 147 148 #endif // COURGETTE_ELF_TYPES_H_ 149
