| // 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_ELF_TYPES_H_ |
| #define COURGETTE_ELF_TYPES_H_ |
| |
| #include <stdint.h> |
| |
| // |
| // 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, |
| }; |
| |
| enum elf32_rel_arm_type_values { |
| R_ARM_RELATIVE = 23, |
| }; |
| |
| #endif // COURGETTE_ELF_TYPES_H_ |