// Copyright (c) 2011 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef COURGETTE_TYPES_ELF_H_ #define COURGETTE_TYPES_ELF_H_ #include // // This header defines various types from the ELF file spec, but no code // related to using them. // typedef uint32_t Elf32_Addr; // Unsigned program address typedef uint16_t Elf32_Half; // Unsigned medium integer typedef uint32_t Elf32_Off; // Unsigned file offset typedef int32_t Elf32_Sword; // Signed large integer typedef uint32_t Elf32_Word; // Unsigned large integer // The header at the top of the file struct Elf32_Ehdr { unsigned char e_ident[16]; Elf32_Half e_type; Elf32_Half e_machine; Elf32_Word e_version; Elf32_Addr e_entry; 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; }; // Indexes for header->e_ident[]. enum e_ident_indexes { EI_MAG0 = 0, // File identification. EI_MAG1 = 1, // File identification. EI_MAG2 = 2, // File identification. EI_MAG3 = 3, // File identification. EI_CLASS = 4, // File class. EI_DATA = 5, // Data encoding. EI_VERSION = 6, // File version. EI_OSABI = 7, // Operating system/ABI identification. EI_ABIVERSION = 8, // ABI version. EI_PAD = 9, // Start of padding bytes. EI_NIDENT = 16 // Size of e_ident[]. }; // Values for header->e_ident[EI_CLASS]. enum e_ident_class_values { ELFCLASSNONE = 0, // Invalid class. ELFCLASS32 = 1, // 32-bit objects. ELFCLASS64 = 2 // 64-bit objects. }; // Values for header->e_ident[EI_DATA]. enum e_ident_data_values { ELFDATANONE = 0, // Unknown data format. ELFDATA2LSB = 1, // Two's complement, little-endian. ELFDATA2MSB = 2, // Two's complement, big-endian. }; // values for header->e_type enum e_type_values { ET_NONE = 0, // No file type ET_REL = 1, // Relocatable file ET_EXEC = 2, // Executable file ET_DYN = 3, // Shared object file ET_CORE = 4, // Core file ET_LOPROC = 0xff00, // Processor-specific ET_HIPROC = 0xfff // Processor-specific }; // values for header->e_machine enum e_machine_values { EM_NONE = 0, // No machine EM_386 = 3, // Intel Architecture EM_ARM = 40, // ARM Architecture EM_x86_64 = 62, // Intel x86-64 Architecture // Other values skipped }; enum { SHN_UNDEF = 0 }; // A section header in the section header table 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; }; // Values for the section type field in a section header enum sh_type_values { SHT_NULL = 0, SHT_PROGBITS = 1, SHT_SYMTAB = 2, SHT_STRTAB = 3, SHT_RELA = 4, SHT_HASH = 5, SHT_DYNAMIC = 6, SHT_NOTE = 7, SHT_NOBITS = 8, SHT_REL = 9, SHT_SHLIB = 10, SHT_DYNSYM = 11, SHT_INIT_ARRAY = 14, SHT_FINI_ARRAY = 15, SHT_LOPROC = 0x70000000, SHT_HIPROC = 0x7fffffff, SHT_LOUSER = 0x80000000, SHT_HIUSER = 0xffffffff, }; 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; }; // Values for the segment type field in a program segment header enum ph_type_values { PT_NULL = 0, PT_LOAD = 1, PT_DYNAMIC = 2, PT_INTERP = 3, PT_NOTE = 4, PT_SHLIB = 5, PT_PHDR = 6, PT_LOPROC = 0x70000000, PT_HIPROC = 0x7fffffff }; struct Elf32_Rel { Elf32_Addr r_offset; Elf32_Word r_info; }; struct Elf32_Rela { Elf32_Addr r_offset; Elf32_Word r_info; Elf32_Sword r_addend; }; enum elf32_rel_386_type_values { R_386_NONE = 0, R_386_32 = 1, R_386_PC32 = 2, R_386_GOT32 = 3, R_386_PLT32 = 4, R_386_COPY = 5, R_386_GLOB_DAT = 6, R_386_JMP_SLOT = 7, R_386_RELATIVE = 8, R_386_GOTOFF = 9, R_386_GOTPC = 10, R_386_TLS_TPOFF = 14, }; #endif // COURGETTE_TYPES_ELF_H_