| /* |
| * Copyright (c) 2010, 2014 Wind River Systems, Inc. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /* @file |
| * @brief Executable and Linking Format (ELF) definitions |
| * |
| * The definitions in this header conform to the "Tool Interface Standard (TIS) |
| * Executable and Linking Format (ELF) Specification Version 1.2" |
| */ |
| |
| #ifndef _ELF_H |
| #define _ELF_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| typedef unsigned int Elf32_Addr; |
| typedef unsigned short Elf32_Half; |
| typedef unsigned int Elf32_Off; |
| typedef int Elf32_Sword; |
| typedef unsigned int Elf32_Word; |
| |
| |
| /* |
| * Elf header |
| */ |
| |
| #define EI_NIDENT 16 |
| |
| typedef struct |
| { |
| 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; |
| |
| #define EHDRSZ sizeof(Elf32_Ehdr) |
| |
| /* |
| * e_ident[] values |
| */ |
| #define EI_MAG0 0 |
| #define EI_MAG1 1 |
| #define EI_MAG2 2 |
| #define EI_MAG3 3 |
| #define EI_CLASS 4 |
| #define EI_DATA 5 |
| #define EI_VERSION 6 |
| #define EI_PAD 7 |
| |
| #define ELFMAG0 0x7f |
| #define ELFMAG1 'E' |
| #define ELFMAG2 'L' |
| #define ELFMAG3 'F' |
| #define ELFMAG "\177ELF" |
| #define SELFMAG 4 |
| |
| /* |
| * EI_CLASS |
| */ |
| #define ELFCLASSNONE 0 |
| #define ELFCLASS32 1 |
| #define ELFCLASS64 2 |
| |
| /* |
| * EI_DATA |
| */ |
| #define ELFDATANONE 0 |
| #define ELFDATA2LSB 1 |
| #define ELFDATA2MSB 2 |
| |
| /* |
| * e_type |
| */ |
| #define ET_NONE 0 |
| #define ET_REL 1 |
| #define ET_EXEC 2 |
| #define ET_DYN 3 |
| #define ET_CORE 4 |
| #define ET_LOPROC 0xff00 |
| #define ET_HIPROC 0xffff |
| |
| /* |
| * e_machine |
| */ |
| #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_486 6 /* Intel 80486 */ |
| #define EM_860 7 /* Intel 80860 */ |
| #define EM_MIPS 8 /* MIPS RS3000 Big-Endian */ |
| #define EM_MIPS_RS4_BE 10 /* MIPS RS4000 Big-Endian */ |
| #define EM_PPC_OLD 17 /* PowerPC - old */ |
| #define EM_PPC 20 /* PowerPC */ |
| #define EM_RCE_OLD 25 /* RCE - old */ |
| #define EM_NEC_830 36 /* NEC 830 series */ |
| #define EM_RCE 39 /* RCE */ |
| #define EM_MCORE 39 /* MCORE */ |
| #define EM_ARM 40 /* ARM */ |
| #define EM_SH 42 /* SH */ |
| #define EM_COLDFIRE 52 /* Motorola ColdFire */ |
| #define EM_SC 58 /* SC */ |
| #define EM_M32R 36929 /* M32R */ |
| #define EM_NEC 36992 /* NEC 850 series */ |
| |
| /* |
| * e_flags |
| */ |
| #define EF_PPC_EMB 0x80000000 |
| |
| #define EF_MIPS_NOREORDER 0x00000001 |
| #define EF_MIPS_PIC 0x00000002 |
| #define EF_MIPS_CPIC 0x00000004 |
| #define EF_MIPS_ARCH 0xf0000000 |
| #define EF_MIPS_ARCH_MIPS_2 0x10000000 |
| #define EF_MIPS_ARCH_MIPS_3 0x20000000 |
| |
| /* |
| * e_version and EI_VERSION |
| */ |
| #define EV_NONE 0 |
| #define EV_CURRENT 1 |
| |
| /* |
| * 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 |
| |
| #define SHN_GHCOMMON 0xff00 |
| /* |
| * Section header |
| */ |
| typedef struct |
| { |
| Elf32_Word sh_name; |
| Elf32_Word sh_type; /* SHT_... */ |
| Elf32_Word sh_flags; /* SHF_... */ |
| 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; |
| |
| #define SHDRSZ sizeof(Elf32_Shdr) |
| |
| /* |
| * 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_COMDAT 12 |
| #define SHT_LOPROC 0x70000000 |
| #define SHT_HIPROC 0x7fffffff |
| #define SHT_LOUSER 0x80000000 |
| #define SHT_HIUSER 0xffffffff |
| #define SHT_INIT_ARRAY 14 |
| #define SHT_FINI_ARRAY 15 |
| #define SHT_PREINIT_ARRAY 16 |
| #define SHT_GROUP 17 |
| #define SHT_SYMTAB_SHNDX 18 |
| #define SHT_NUM 19 |
| |
| /* |
| * sh_flags |
| */ |
| #define SHF_WRITE 0x1 |
| #define SHF_ALLOC 0x2 |
| #define SHF_EXECINSTR 0x4 |
| #define SHF_MASKPROC 0xf0000000 |
| #define SHF_MERGE 0x10 /* not part of all ELF ABI docs */ |
| #define SHF_STRINGS 0x20 /* not part of all ELF ABI docs */ |
| #define SHF_INFO_LINK 0x40 |
| #define SHF_LINK_ORDER 0x80 |
| #define SHF_OS_NONCONFORMING 0x100 |
| #define SHF_GROUP 0x200 |
| #define SHF_TLS 0x400 |
| |
| /* |
| * Symbol table |
| */ |
| typedef struct |
| { |
| 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 STN_UNDEF 0 |
| |
| #define STB_LOCAL 0 |
| #define STB_GLOBAL 1 |
| #define STB_WEAK 2 |
| #define STB_LOPROC 13 |
| #define STB_HIPROC 15 |
| |
| #define STT_NOTYPE 0 |
| #define STT_OBJECT 1 |
| #define STT_FUNC 2 |
| #define STT_SECTION 3 |
| #define STT_FILE 4 |
| #define STT_COMMON 5 |
| #define STT_TLS 6 |
| #define STT_LOOS 10 |
| #define STT_HIOS 12 |
| #define STT_LOPROC 13 |
| #define STT_HIPROC 15 |
| |
| #define ELF_ST_BIND(x) ((x) >> 4) |
| #define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf) |
| #define ELF32_ST_BIND(x) ELF_ST_BIND(x) |
| #define ELF32_ST_TYPE(x) ELF_ST_TYPE(x) |
| |
| |
| /* |
| * The STT_ARM_TFUNC type is used by the gnu compiler to mark Thumb |
| * functions. The STT_ARM_16BIT type is the thumb equivalent of an |
| * object. They are not part of the ARM ABI or EABI - they come from gnu. |
| */ |
| |
| #define STT_ARM_TFUNC STT_LOPROC /* GNU Thumb function */ |
| #define STT_ARM_16BIT STT_HIPROC /* GNU Thumb label */ |
| |
| |
| /* |
| * Relocation |
| */ |
| typedef struct |
| { |
| Elf32_Addr r_offset; |
| Elf32_Word r_info; |
| } Elf32_Rel; |
| |
| typedef struct |
| { |
| Elf32_Addr r_offset; |
| Elf32_Word r_info; |
| Elf32_Sword r_addend; |
| } Elf32_Rela; |
| |
| #define ELF32_R_SYM(info) ((info)>>8) |
| #define ELF32_R_TYPE(info) ((unsigned char)(info)) |
| #define ELF32_R_INFO(sym,type) (((sym)<<8)+(unsigned char)(type)) |
| |
| /* |
| * Program header |
| */ |
| typedef struct |
| { |
| 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; |
| |
| #define PHDRSZ sizeof(Elf32_Phdr) |
| |
| /* |
| * 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 |
| |
| /* |
| * p_flags |
| */ |
| #define PF_X 0x1 |
| #define PF_W 0x2 |
| #define PF_R 0x4 |
| #define PF_MASKPROC 0xf0000000 |
| |
| typedef struct |
| { |
| Elf32_Sword d_tag; |
| union |
| { |
| Elf32_Word d_val; |
| Elf32_Addr d_ptr; |
| } d_un; |
| } Elf32_Dyn; |
| |
| #define DT_NULL 0 |
| #define DT_NEEDED 1 |
| #define DT_PLTRELSZ 2 |
| #define DT_PLTGOT 3 |
| #define DT_HASH 4 |
| #define DT_STRTAB 5 |
| #define DT_SYMTAB 6 |
| #define DT_RELA 7 |
| #define DT_RELASZ 8 |
| #define DT_RELAENT 9 |
| #define DT_STRSZ 10 |
| #define DT_SYMENT 11 |
| #define DT_INIT 12 |
| #define DT_FINI 13 |
| #define DT_SONAME 14 |
| #define DT_RPATH 15 |
| #define DT_SYMBOLIC 16 |
| #define DT_REL 17 |
| #define DT_RELSZ 18 |
| #define DT_RELENT 19 |
| #define DT_PLTREL 20 |
| #define DT_DEBUG 21 |
| #define DT_TEXTREL 22 |
| #define DT_JMPREL 23 |
| #define DT_LOPROC 0x70000000 |
| #define DT_HIPROC 0x7fffffff |
| |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _ELF_H */ |
