/* $Id$ */ /* Copyright (c) 2008-2019 Pierre Pronchery */ /* This file is part of DeforaOS System libc */ /* All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef LIBC_ELF_H # define LIBC_ELF_H # include /* types */ /* helpers */ # ifdef ELFSIZE # if ELFSIZE == 32 # define ELFCLASS ELFCLASS32 # define ELF_R_SYM(info) ELF32_R_SYM(info) # define ELF_R_TYPE(info) ELF32_R_TYPE(info) # define ELF_ST_TYPE(info) ELF32_ST_TYPE(info) # define Elf_Addr Elf32_Addr # define Elf_Dyn Elf32_Dyn # define Elf_Ehdr Elf32_Ehdr # define Elf_Off Elf32_Off # define Elf_Phdr Elf32_Phdr # define Elf_Shdr Elf32_Shdr # define Elf_Rel Elf32_Rel # define Elf_Rela Elf32_Rela # define Elf_Sym Elf32_Sym # define Elf_Word Elf32_Word # define AuxInfo Aux32Info # elif ELFSIZE == 64 # define ELFCLASS ELFCLASS64 # define ELF_R_SYM(info) ELF64_R_SYM(info) # define ELF_R_TYPE(info) ELF64_R_TYPE(info) # define ELF_ST_TYPE(info) ELF32_ST_TYPE(info) # define Elf_Addr Elf64_Addr # define Elf_Dyn Elf64_Dyn # define Elf_Ehdr Elf64_Ehdr # define Elf_Off Elf64_Off # define Elf_Phdr Elf64_Phdr # define Elf_Shdr Elf64_Shdr # define Elf_Rel Elf64_Rel # define Elf_Rela Elf64_Rela # define Elf_Sym Elf64_Sym # define Elf_Word Elf64_Word # define AuxInfo Aux64Info # endif /* ELFSIZE == 64 */ # endif /* ELFSIZE */ /* common */ typedef uint8_t Elf_Byte; /* Elf32 */ typedef uint32_t Elf32_Addr; typedef uint16_t Elf32_Half; typedef uint32_t Elf32_Off; typedef int32_t Elf32_Sword; typedef uint32_t Elf32_Word; /* Elf64 */ typedef uint64_t Elf64_Addr; typedef uint32_t Elf64_Half; typedef uint64_t Elf64_Off; typedef uint16_t Elf64_Quarter; typedef int32_t Elf64_Shalf; typedef int64_t Elf64_Sxword; typedef uint32_t Elf64_Word; typedef uint64_t Elf64_Xword; /* Elf_Ehdr */ # 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 EI_NIDENT 16 /* mag */ # define ELFMAG0 0x7f # define ELFMAG1 'E' # define ELFMAG2 'L' # define ELFMAG3 'F' # define ELFMAG "\177ELF" # define SELFMAG 4 /* class */ # define ELFCLASSNONE 0 # define ELFCLASS32 1 # define ELFCLASS64 2 /* data */ # define ELFDATANONE 0 # define ELFDATA2LSB 1 # define ELFDATA2MSB 2 /* version */ # define EV_NONE 0 # define EV_CURRENT 1 /* 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 /* machine */ # define EM_NONE 0 # define EM_M32 1 # define EM_SPARC 2 # define EM_386 3 # define EM_68K 4 # define EM_88K 5 # define EM_860 7 # define EM_MIPS 8 # define EM_ARM 40 # define EM_SPARCV9 43 # define EM_X86_64 62 typedef struct _Elf32_Ehdr { 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; typedef struct _Elf64_Ehdr { unsigned char e_ident[EI_NIDENT]; Elf64_Quarter e_type; Elf64_Quarter e_machine; Elf64_Half e_version; Elf64_Addr e_entry; Elf64_Off e_phoff; Elf64_Off e_shoff; Elf64_Half e_flags; Elf64_Quarter e_ehsize; Elf64_Quarter e_phentsize; Elf64_Quarter e_phnum; Elf64_Quarter e_shentsize; Elf64_Quarter e_shnum; Elf64_Quarter e_shstrndx; } Elf64_Ehdr; /* Elf_Shdr */ /* name */ # define SHN_UNDEF 0 # define SHN_ABS 0xfff1 # define SHN_COMMON 0xfff2 /* 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 /* flags */ # define SHF_WRITE 0x1 # define SHF_ALLOC 0x2 # define SHF_EXECINSTR 0x4 typedef 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; } Elf32_Shdr; typedef struct _Elf64_Shdr { Elf64_Half sh_name; Elf64_Half sh_type; Elf64_Xword sh_flags; Elf64_Addr sh_addr; Elf64_Off sh_offset; Elf64_Xword sh_size; Elf64_Half sh_link; Elf64_Half sh_info; Elf64_Xword sh_addralign; Elf64_Xword sh_entsize; } Elf64_Shdr; /* Elf_Phdr */ /* 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 /* flags */ # define PF_R 0x4 # define PF_W 0x2 # define PF_X 0x1 typedef 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; } Elf32_Phdr; typedef struct _Elf64_Phdr { Elf64_Half p_type; Elf64_Half p_flags; Elf64_Off p_offset; Elf64_Addr p_vaddr; Elf64_Addr p_paddr; Elf64_Xword p_filesz; Elf64_Xword p_memsz; Elf64_Xword p_align; } Elf64_Phdr; /* Elf_Rel */ # define ELF32_R_SYM(info) ((info) >> 8) # define ELF32_R_TYPE(info) ((info) & 0xf) # define R_386_NONE 0 # define R_386_32 1 # define R_386_PC32 2 # define R_386_GOT32 3 # define R_386_PLT32 4 # define R_386_COPY 5 # define R_386_GLOB_DAT 6 # define R_386_JMP_SLOT 7 # define R_386_RELATIVE 8 # define R_386_GOTOFF 9 # define R_386_GOTPC 10 typedef struct _Elf32_Rel { Elf32_Addr r_offset; Elf32_Word r_info; } Elf32_Rel; # define ELF64_R_SYM(info) ((info) >> 32) # define ELF64_R_TYPE(info) ((info) & 0xffffffff) # define R_X86_64_NONE 0 # define R_X86_64_64 1 # define R_X86_64_PC32 2 # define R_X86_64_GOT32 3 # define R_X86_64_PLT32 4 # define R_X86_64_COPY 5 # define R_X86_64_GLOB_DAT 6 # define R_X86_64_JUMP_SLOT 7 # define R_X86_64_RELATIVE 8 # define R_X86_64_GOTPCREL 9 typedef struct _Elf64_Rel { Elf64_Addr r_offset; Elf64_Xword r_info; } Elf64_Rel; /* Elf_Rela */ typedef struct _Elf32_Rela { Elf32_Addr r_offset; Elf32_Word r_info; Elf32_Sword r_addend; } Elf32_Rela; typedef struct _Elf64_Rela { Elf64_Addr r_offset; Elf64_Xword r_info; Elf64_Sxword r_addend; } Elf64_Rela; /* Elf_Sym */ /* name */ # define STN_UNDEF 0 /* info */ # define ELF_ST_BIND(info) (info >> 4) # define ELF_ST_TYPE(info) (info & 0xf) # define ELF32_ST_BIND(info) ELF_ST_BIND(info) # define ELF32_ST_TYPE(info) ELF_ST_TYPE(info) # define ELF64_ST_BIND(info) ELF_ST_BIND(info) # define ELF64_ST_TYPE(info) ELF_ST_TYPE(info) /* bind */ # define STB_LOCAL 0 # define STB_GLOBAL 1 # define STB_WEAK 2 # define STB_LOOS 10 # define STB_HIOS 12 # define STB_LOPROC 13 # define STB_HIPROC 15 /* type */ # define STT_NOTYPE 0 # define STT_OBJECT 1 # define STT_FUNC 2 # define STT_SECTION 3 # define STT_FILE 4 # define STT_NUM 5 # define STT_LOOS 10 # define STT_HIOS 12 # define STT_LOPROC 13 # define STT_HIPROC 15 typedef struct _Elf32_Sym { Elf32_Word st_name; Elf32_Word st_value; Elf32_Word st_size; Elf_Byte st_info; Elf_Byte st_other; Elf32_Half st_shndx; } Elf32_Sym; typedef struct _Elf64_Sym { Elf64_Half st_name; Elf_Byte st_info; Elf_Byte st_other; Elf64_Quarter st_shndx; Elf64_Addr st_value; Elf64_Xword st_size; } Elf64_Sym; /* Elf_Dyn */ /* tag */ # 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_BIND_NOW 24 # define DT_INIT_ARRAY 25 # define DT_FINI_ARRAY 26 # define DT_FINI_ARRAYSZ 27 # define DT_INIT_ARRAYSZ 28 # define DT_NUM 29 typedef struct _Elf32_Dyn { Elf32_Word d_tag; union { Elf32_Addr d_ptr; Elf32_Word d_val; } d_un; } Elf32_Dyn; typedef struct _Elf64_Dyn { Elf64_Xword d_tag; union { Elf64_Addr d_ptr; Elf64_Xword d_val; } d_un; } Elf64_Dyn; /* AuxInfo */ /* type */ # define AT_NULL 0 # define AT_IGNORE 1 # define AT_EXECFD 2 # define AT_PHDR 3 # define AT_PHENT 4 # define AT_PHNUM 5 # define AT_PAGESZ 6 # define AT_BASE 7 # define AT_FLAGS 8 # define AT_ENTRY 9 # define AT_STACKBASE 13 typedef struct _Aux32Info { Elf32_Word a_type; Elf32_Word a_v; } Aux32Info; typedef struct _Aux64Info { Elf64_Word a_type; Elf64_Xword a_v; } Aux64Info; #endif /* !LIBC_ELF_H */