| //===-- elf.h ---------------------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef __elf_h__ |
| #define __elf_h__ |
| |
| typedef uint16_t Elf32_Half; |
| typedef uint32_t Elf32_Word; |
| typedef int32_t Elf32_Sword; |
| typedef uint32_t Elf32_Addr; |
| typedef uint32_t Elf32_Off; |
| |
| |
| #define EI_NIDENT 16 |
| |
| //---------------------------------------------------------------------- |
| // ELF Header |
| //---------------------------------------------------------------------- |
| typedef struct Elf32_Ehdr_Tag |
| { |
| unsigned char e_ident[EI_NIDENT]; |
| 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; |
| } Elf32_Ehdr; |
| |
| //---------------------------------------------------------------------- |
| // e_type |
| // |
| // This member identifies the 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_LOPROC 0xff00 // Processor-specific |
| #define ET_HIPROC 0xffff // Processor-specific |
| |
| //---------------------------------------------------------------------- |
| // e_machine |
| // |
| // Machine Type |
| //---------------------------------------------------------------------- |
| #define EM_NONE 0 // No machine |
| #define EM_M32 1 // AT&T WE 32100 |
| #define EM_SPARC 2 // SPARC |
| #define EM_386 3 // Intel 80386 |
| #define EM_68K 4 // Motorola 68000 |
| #define EM_88K 5 // Motorola 88000 |
| #define EM_860 7 // Intel 80860 |
| #define EM_MIPS 8 // MIPS RS3000 |
| #define EM_PPC 20 // PowerPC |
| #define EM_PPC64 21 // PowerPC64 |
| #define EM_ARM 40 // ARM |
| |
| |
| //---------------------------------------------------------------------- |
| // e_ident indexes |
| //---------------------------------------------------------------------- |
| #define EI_MAG0 0 // File identification |
| #define EI_MAG1 1 // File identification |
| #define EI_MAG2 2 // File identification |
| #define EI_MAG3 3 // File identification |
| #define EI_CLASS 4 // File class |
| #define EI_DATA 5 // Data encoding |
| #define EI_VERSION 6 // File version |
| #define EI_PAD 7 // Start of padding bytes |
| |
| |
| //---------------------------------------------------------------------- |
| // EI_DATA definitions |
| //---------------------------------------------------------------------- |
| #define ELFDATANONE 0 // Invalid data encoding |
| #define ELFDATA2LSB 1 // Little Endian |
| #define ELFDATA2MSB 2 // Big Endian |
| |
| //---------------------------------------------------------------------- |
| // Section Header |
| //---------------------------------------------------------------------- |
| typedef struct Elf32_Shdr_Tag |
| { |
| 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; |
| } Elf32_Shdr; |
| |
| //---------------------------------------------------------------------- |
| // Section Types (sh_type) |
| //---------------------------------------------------------------------- |
| #define SHT_NULL 0 |
| #define SHT_PROGBITS 1 |
| #define SHT_SYMTAB 2 |
| #define SHT_STRTAB 3 |
| #define SHT_RELA 4 |
| #define SHT_HASH 5 |
| #define SHT_DYNAMIC 6 |
| #define SHT_NOTE 7 |
| #define SHT_NOBITS 8 |
| #define SHT_REL 9 |
| #define SHT_SHLIB 10 |
| #define SHT_DYNSYM 11 |
| #define SHT_LOPROC 0x70000000 |
| #define SHT_HIPROC 0x7fffffff |
| #define SHT_LOUSER 0x80000000 |
| #define SHT_HIUSER 0xffffffff |
| |
| //---------------------------------------------------------------------- |
| // Special Section Indexes |
| //---------------------------------------------------------------------- |
| #define SHN_UNDEF 0 |
| #define SHN_LORESERVE 0xff00 |
| #define SHN_LOPROC 0xff00 |
| #define SHN_HIPROC 0xff1f |
| #define SHN_ABS 0xfff1 |
| #define SHN_COMMON 0xfff2 |
| #define SHN_HIRESERVE 0xffff |
| |
| //---------------------------------------------------------------------- |
| // Section Attribute Flags (sh_flags) |
| //---------------------------------------------------------------------- |
| #define SHF_WRITE 0x1 |
| #define SHF_ALLOC 0x2 |
| #define SHF_EXECINSTR 0x4 |
| #define SHF_MASKPROC 0xf0000000 |
| |
| |
| //---------------------------------------------------------------------- |
| // Symbol Table Entry Header |
| //---------------------------------------------------------------------- |
| typedef struct Elf32_Sym_Tag |
| { |
| Elf32_Word st_name; |
| Elf32_Addr st_value; |
| Elf32_Word st_size; |
| unsigned char st_info; |
| unsigned char st_other; |
| Elf32_Half st_shndx; |
| } Elf32_Sym; |
| |
| |
| #define ELF32_ST_BIND(i) ((i)>>4) |
| #define ELF32_ST_TYPE(i) ((i)&0xf) |
| #define ELF32_ST_INFO(b,t) (((b)<<4)+((t)&0xf)) |
| |
| // ST_BIND |
| #define STB_LOCAL 0 |
| #define STB_GLOBAL 1 |
| #define STB_WEAK 2 |
| #define STB_LOPROC 13 |
| #define STB_HIPROC 15 |
| |
| // ST_TYPE |
| #define STT_NOTYPE 0 |
| #define STT_OBJECT 1 |
| #define STT_FUNC 2 |
| #define STT_SECTION 3 |
| #define STT_FILE 4 |
| #define STT_LOPROC 13 |
| #define STT_HIPROC 15 |
| |
| |
| //---------------------------------------------------------------------- |
| // Relocation Entries |
| //---------------------------------------------------------------------- |
| typedef struct Elf32_Rel_Tag |
| { |
| Elf32_Addr r_offset; |
| Elf32_Word r_info; |
| } Elf32_Rel; |
| |
| typedef struct Elf32_Rela_Tag |
| { |
| Elf32_Addr r_offset; |
| Elf32_Word r_info; |
| Elf32_Sword r_addend; |
| } Elf32_Rela; |
| |
| #define ELF32_R_SYM(i) ((i)>>8) |
| #define ELF32_R_TYPE(i) ((unsignedchar)(i)) |
| #define ELF32_R_INFO(s,t) (((s)<<8)+(unsignedchar)(t)) |
| |
| |
| //---------------------------------------------------------------------- |
| // Program Headers |
| //---------------------------------------------------------------------- |
| typedef struct Elf32_Phdr_Tag |
| { |
| 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; |
| } Elf32_Phdr; |
| |
| //---------------------------------------------------------------------- |
| // Program Header Type (p_type) |
| //---------------------------------------------------------------------- |
| #define PT_NULL 0 |
| #define PT_LOAD 1 |
| #define PT_DYNAMIC 2 |
| #define PT_INTERP 3 |
| #define PT_NOTE 4 |
| #define PT_SHLIB 5 |
| #define PT_PHDR 6 |
| #define PT_LOPROC 0x70000000 |
| #define PT_HIPROC 0x7fffffff |
| |
| #define PF_X (1 << 0) // executable |
| #define PF_W (1 << 1) // writable |
| #define PF_R (1 << 2) // readable |
| |
| |
| #endif // __elf_h__ |