/* * Copyright (c) 2010, 2014 Wind River Systems, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* @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 */