/* $OpenBSD: exec_elf.h,v 1.83 2019/01/22 23:23:18 jsg Exp $ */ /* * Copyright (c) 1995, 1996 Erik Theisen. 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. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ /* * This is the ELF ABI header file * formerly known as "elf_abi.h". */ #pragma once #ifndef KERNEL # include #else # include #endif typedef uint8_t Elf_Byte; typedef uint32_t Elf32_Addr; /* Unsigned program address */ typedef uint32_t Elf32_Off; /* Unsigned file offset */ typedef int32_t Elf32_Sword; /* Signed large integer */ typedef uint32_t Elf32_Word; /* Unsigned large integer */ typedef uint16_t Elf32_Half; /* Unsigned medium integer */ typedef uint64_t Elf32_Lword; typedef uint64_t Elf64_Addr; typedef uint64_t Elf64_Off; typedef int32_t Elf64_Shalf; #ifdef __alpha__ typedef int64_t Elf64_Sword; typedef uint64_t Elf64_Word; #else typedef int32_t Elf64_Sword; typedef uint32_t Elf64_Word; #endif typedef int64_t Elf64_Sxword; typedef uint64_t Elf64_Xword; typedef uint64_t Elf64_Lword; typedef uint32_t Elf64_Half; typedef uint16_t Elf64_Quarter; /* * e_ident[] identification indices * See http://www.sco.com/developers/gabi/latest/ch4.eheader.html */ #define EI_MAG0 0 /* file ID */ #define EI_MAG1 1 /* file ID */ #define EI_MAG2 2 /* file ID */ #define EI_MAG3 3 /* file ID */ #define EI_CLASS 4 /* file class */ #define EI_DATA 5 /* data encoding */ #define EI_VERSION 6 /* ELF header version */ #define EI_OSABI 7 /* OS/ABI ID */ #define EI_ABIVERSION 8 /* ABI version */ #define EI_PAD 9 /* start of pad bytes */ #define EI_NIDENT 16 /* Gfx::Size of e_ident[] */ /* e_ident[] magic number */ #define ELFMAG0 0x7f /* e_ident[EI_MAG0] */ #define ELFMAG1 'E' /* e_ident[EI_MAG1] */ #define ELFMAG2 'L' /* e_ident[EI_MAG2] */ #define ELFMAG3 'F' /* e_ident[EI_MAG3] */ #define ELFMAG "\177ELF" /* magic */ #define SELFMAG 4 /* size of magic */ /* e_ident[] file class */ #define ELFCLASSNONE 0 /* invalid */ #define ELFCLASS32 1 /* 32-bit objs */ #define ELFCLASS64 2 /* 64-bit objs */ #define ELFCLASSNUM 3 /* number of classes */ /* e_ident[] data encoding */ #define ELFDATANONE 0 /* invalid */ #define ELFDATA2LSB 1 /* Little-Endian */ #define ELFDATA2MSB 2 /* Big-Endian */ #define ELFDATANUM 3 /* number of data encode defines */ /* e_ident[] Operating System/ABI */ #define ELFOSABI_SYSV 0 /* UNIX System V ABI */ #define ELFOSABI_HPUX 1 /* HP-UX operating system */ #define ELFOSABI_NETBSD 2 /* NetBSD */ #define ELFOSABI_LINUX 3 /* GNU/Linux */ #define ELFOSABI_HURD 4 /* GNU/Hurd */ #define ELFOSABI_86OPEN 5 /* 86Open common IA32 ABI */ #define ELFOSABI_SOLARIS 6 /* Solaris */ #define ELFOSABI_MONTEREY 7 /* Monterey */ #define ELFOSABI_IRIX 8 /* IRIX */ #define ELFOSABI_FREEBSD 9 /* FreeBSD */ #define ELFOSABI_TRU64 10 /* TRU64 UNIX */ #define ELFOSABI_MODESTO 11 /* Novell Modesto */ #define ELFOSABI_OPENBSD 12 /* OpenBSD */ #define ELFOSABI_ARM 97 /* ARM */ #define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */ /* e_ident */ #define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && (ehdr).e_ident[EI_MAG1] == ELFMAG1 && (ehdr).e_ident[EI_MAG2] == ELFMAG2 && (ehdr).e_ident[EI_MAG3] == ELFMAG3) /* ELF Header */ typedef struct elfhdr { unsigned char e_ident[EI_NIDENT]; /* ELF Identification */ Elf32_Half e_type; /* object file type */ Elf32_Half e_machine; /* machine */ Elf32_Word e_version; /* object file version */ Elf32_Addr e_entry; /* virtual entry point */ Elf32_Off e_phoff; /* program header table offset */ Elf32_Off e_shoff; /* section header table offset */ Elf32_Word e_flags; /* processor-specific flags */ Elf32_Half e_ehsize; /* ELF header size */ Elf32_Half e_phentsize; /* program header entry size */ Elf32_Half e_phnum; /* number of program header entries */ Elf32_Half e_shentsize; /* section header entry size */ Elf32_Half e_shnum; /* number of section header entries */ Elf32_Half e_shstrndx; /* section header table's "section header string table" entry offset */ } Elf32_Ehdr; typedef struct { unsigned char e_ident[EI_NIDENT]; /* Id bytes */ Elf64_Quarter e_type; /* file type */ Elf64_Quarter e_machine; /* machine type */ Elf64_Half e_version; /* version number */ Elf64_Addr e_entry; /* entry point */ Elf64_Off e_phoff; /* Program hdr offset */ Elf64_Off e_shoff; /* Section hdr offset */ Elf64_Half e_flags; /* Processor flags */ Elf64_Quarter e_ehsize; /* sizeof ehdr */ Elf64_Quarter e_phentsize; /* Program header entry size */ Elf64_Quarter e_phnum; /* Number of program headers */ Elf64_Quarter e_shentsize; /* Section header entry size */ Elf64_Quarter e_shnum; /* Number of section headers */ Elf64_Quarter e_shstrndx; /* String table index */ } Elf64_Ehdr; /* e_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_NUM 5 /* number of types */ #define ET_LOPROC 0xff00 /* reserved range for processor */ #define ET_HIPROC 0xffff /* specific e_type */ /* 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 - unused? */ #define EM_860 7 /* Intel 80860 */ #define EM_MIPS 8 /* MIPS R3000 Big-Endian only */ /* * Don't know if EM_MIPS_RS4_BE, * EM_SPARC64, EM_PARISC, * or EM_PPC are ABI compliant */ #define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */ #define EM_SPARC64 11 /* SPARC v9 64-bit unofficial */ #define EM_PARISC 15 /* HPPA */ #define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */ #define EM_PPC 20 /* PowerPC */ #define EM_PPC64 21 /* PowerPC 64 */ #define EM_ARM 40 /* Advanced RISC Machines ARM */ #define EM_ALPHA 41 /* DEC ALPHA */ #define EM_SH 42 /* Hitachi/Renesas Super-H */ #define EM_SPARCV9 43 /* SPARC version 9 */ #define EM_IA_64 50 /* Intel IA-64 Processor */ #define EM_AMD64 62 /* AMD64 architecture */ #define EM_X86_64 EM_AMD64 #define EM_VAX 75 /* DEC VAX */ #define EM_AARCH64 183 /* ARM 64-bit architecture (AArch64) */ /* Non-standard */ #define EM_ALPHA_EXP 0x9026 /* DEC ALPHA */ #define EM__LAST__ (EM_ALPHA_EXP + 1) #define EM_NUM 22 /* number of machine types */ /* Version */ #define EV_NONE 0 /* Invalid */ #define EV_CURRENT 1 /* Current */ #define EV_NUM 2 /* number of versions */ /* Magic for e_phnum: get real value from sh_info of first section header */ #define PN_XNUM 0xffff /* Section Header */ typedef struct { Elf32_Word sh_name; /* name - index into section header string table section */ Elf32_Word sh_type; /* type */ Elf32_Word sh_flags; /* flags */ Elf32_Addr sh_addr; /* address */ Elf32_Off sh_offset; /* file offset */ Elf32_Word sh_size; /* section size */ Elf32_Word sh_link; /* section header table index link */ Elf32_Word sh_info; /* extra information */ Elf32_Word sh_addralign; /* address alignment */ Elf32_Word sh_entsize; /* section entry size */ } Elf32_Shdr; typedef struct { Elf64_Half sh_name; /* section name */ Elf64_Half sh_type; /* section type */ Elf64_Xword sh_flags; /* section flags */ Elf64_Addr sh_addr; /* virtual address */ Elf64_Off sh_offset; /* file offset */ Elf64_Xword sh_size; /* section size */ Elf64_Half sh_link; /* link to another */ Elf64_Half sh_info; /* misc info */ Elf64_Xword sh_addralign; /* memory alignment */ Elf64_Xword sh_entsize; /* table entry size */ } Elf64_Shdr; /* Special Section Indices */ #define SHN_UNDEF 0 /* undefined */ #define SHN_LORESERVE 0xff00 /* lower bounds of reserved indices */ #define SHN_LOPROC 0xff00 /* reserved range for processor */ #define SHN_HIPROC 0xff1f /* specific section indices */ #define SHN_ABS 0xfff1 /* absolute value */ #define SHN_COMMON 0xfff2 /* common symbol */ #define SHN_XINDEX 0xffff /* Escape -- index stored elsewhere. */ #define SHN_HIRESERVE 0xffff /* upper bounds of reserved indices */ /* sh_type */ #define SHT_NULL 0 /* inactive */ #define SHT_PROGBITS 1 /* program defined information */ #define SHT_SYMTAB 2 /* symbol table section */ #define SHT_STRTAB 3 /* string table section */ #define SHT_RELA 4 /* relocation section with addends*/ #define SHT_HASH 5 /* symbol hash table section */ #define SHT_DYNAMIC 6 /* dynamic section */ #define SHT_NOTE 7 /* note section */ #define SHT_NOBITS 8 /* no space section */ #define SHT_REL 9 /* relation section without addends */ #define SHT_SHLIB 10 /* reserved - purpose unknown */ #define SHT_DYNSYM 11 /* dynamic symbol table section */ #define SHT_NUM 12 /* number of section types */ #define SHT_INIT_ARRAY 14 /* pointers to init functions */ #define SHT_FINI_ARRAY 15 /* pointers to termination functions */ #define SHT_PREINIT_ARRAY 16 /* ptrs to funcs called before init */ #define SHT_GROUP 17 /* defines a section group */ #define SHT_SYMTAB_SHNDX 18 /* Section indices (see SHN_XINDEX). */ #define SHT_LOOS 0x60000000 /* reserved range for OS specific */ #define SHT_SUNW_dof 0x6ffffff4 /* used by dtrace */ #define SHT_GNU_LIBLIST 0x6ffffff7 /* libraries to be prelinked */ #define SHT_SUNW_move 0x6ffffffa /* inf for partially init'ed symbols */ #define SHT_SUNW_syminfo 0x6ffffffc /* ad symbol information */ #define SHT_SUNW_verdef 0x6ffffffd /* symbol versioning inf */ #define SHT_SUNW_verneed 0x6ffffffe /* symbol versioning req */ #define SHT_SUNW_versym 0x6fffffff /* symbol versioning table */ #define SHT_HIOS 0x6fffffff /* section header types */ #define SHT_LOPROC 0x70000000 /* reserved range for processor */ #define SHT_HIPROC 0x7fffffff /* specific section header types */ #define SHT_LOUSER 0x80000000 /* reserved range for application */ #define SHT_HIUSER 0xffffffff /* specific indices */ #define SHT_GNU_HASH 0x6ffffff6 /* GNU-style hash table section */ /* Section names */ #define ELF_BSS ".bss" /* uninitialized data */ #define ELF_DATA ".data" /* initialized data */ #define ELF_CTF ".SUNW_ctf" /* CTF data */ #define ELF_DEBUG ".debug" /* debug */ #define ELF_DYNAMIC ".dynamic" /* dynamic linking information */ #define ELF_DYNSTR ".dynstr" /* dynamic string table */ #define ELF_DYNSYM ".dynsym" /* dynamic symbol table */ #define ELF_FINI ".fini" /* termination code */ #define ELF_GOT ".got" /* global offset table */ #define ELF_HASH ".hash" /* symbol hash table */ #define ELF_INIT ".init" /* initialization code */ #define ELF_REL_DATA ".rel.data" /* relocation data */ #define ELF_REL_FINI ".rel.fini" /* relocation termination code */ #define ELF_REL_INIT ".rel.init" /* relocation initialization code */ #define ELF_REL_DYN ".rel.dyn" /* relocation dynamic link info */ #define ELF_REL_RODATA ".rel.rodata" /* relocation read-only data */ #define ELF_REL_TEXT ".rel.text" /* relocation code */ #define ELF_RODATA ".rodata" /* read-only data */ #define ELF_SHSTRTAB ".shstrtab" /* section header string table */ #define ELF_STRTAB ".strtab" /* string table */ #define ELF_SYMTAB ".symtab" /* symbol table */ #define ELF_TEXT ".text" /* code */ #define ELF_OPENBSDRANDOMDATA ".openbsd.randomdata" /* constant randomdata */ /* Section Attribute Flags - sh_flags */ #define SHF_WRITE 0x1 /* Writable */ #define SHF_ALLOC 0x2 /* occupies memory */ #define SHF_EXECINSTR 0x4 /* executable */ #define SHF_MERGE 0x10 /* may be merged */ #define SHF_STRINGS 0x20 /* contains strings */ #define SHF_INFO_LINK 0x40 /* sh_info holds section index */ #define SHF_LINK_ORDER 0x80 /* ordering requirements */ #define SHF_OS_NONCONFORMING 0x100 /* OS-specific processing required */ #define SHF_GROUP 0x200 /* member of section group */ #define SHF_TLS 0x400 /* thread local storage */ #define SHF_COMPRESSED 0x800 /* contains compressed data */ #define SHF_MASKOS 0x0ff00000 /* OS-specific semantics */ #define SHF_MASKPROC 0xf0000000 /* reserved bits for processor */ /* specific section attributes */ /* Symbol Table Entry */ typedef struct elf32_sym { Elf32_Word st_name; /* name - index into string table */ Elf32_Addr st_value; /* symbol value */ Elf32_Word st_size; /* symbol size */ unsigned char st_info; /* type and binding */ unsigned char st_other; /* 0 - no defined meaning */ Elf32_Half st_shndx; /* section header index */ } Elf32_Sym; typedef struct { Elf64_Half st_name; /* Symbol name index in str table */ Elf_Byte st_info; /* type / binding attrs */ Elf_Byte st_other; /* unused */ Elf64_Quarter st_shndx; /* section index of symbol */ Elf64_Xword st_value; /* value of symbol */ Elf64_Xword st_size; /* size of symbol */ } Elf64_Sym; /* Symbol table index */ #define STN_UNDEF 0 /* undefined */ /* Extract symbol info - st_info */ #define ELF32_ST_BIND(x) ((x) >> 4) #define ELF32_ST_TYPE(x) (((unsigned int)x) & 0xf) #define ELF32_ST_INFO(b, t) (((b) << 4) + ((t)&0xf)) #define ELF64_ST_BIND(x) ((x) >> 4) #define ELF64_ST_TYPE(x) (((unsigned int)x) & 0xf) #define ELF64_ST_INFO(b, t) (((b) << 4) + ((t)&0xf)) /* Symbol Binding - ELF32_ST_BIND - st_info */ #define STB_LOCAL 0 /* Local symbol */ #define STB_GLOBAL 1 /* Global symbol */ #define STB_WEAK 2 /* like global - lower precedence */ #define STB_NUM 3 /* number of symbol bindings */ #define STB_LOPROC 13 /* reserved range for processor */ #define STB_HIPROC 15 /* specific symbol bindings */ /* Symbol type - ELF32_ST_TYPE - st_info */ #define STT_NOTYPE 0 /* not specified */ #define STT_OBJECT 1 /* data object */ #define STT_FUNC 2 /* function */ #define STT_SECTION 3 /* section */ #define STT_FILE 4 /* file */ #define STT_TLS 6 /* thread local storage */ #define STT_LOPROC 13 /* reserved range for processor */ #define STT_HIPROC 15 /* specific symbol types */ /* Extract symbol visibility - st_other */ #define ELF_ST_VISIBILITY(v) ((v)&0x3) #define ELF32_ST_VISIBILITY ELF_ST_VISIBILITY #define ELF64_ST_VISIBILITY ELF_ST_VISIBILITY #define STV_DEFAULT 0 /* Visibility set by binding type */ #define STV_INTERNAL 1 /* OS specific version of STV_HIDDEN */ #define STV_HIDDEN 2 /* can only be seen inside own .so */ #define STV_PROTECTED 3 /* HIDDEN inside, DEFAULT outside */ /* Relocation entry with implicit addend */ typedef struct { Elf32_Addr r_offset; /* offset of relocation */ Elf32_Word r_info; /* symbol table index and type */ } Elf32_Rel; /* Relocation entry with explicit addend */ typedef struct { Elf32_Addr r_offset; /* offset of relocation */ Elf32_Word r_info; /* symbol table index and type */ Elf32_Sword r_addend; } Elf32_Rela; /* Extract relocation info - r_info */ #define ELF32_R_SYM(i) ((i) >> 8) #define ELF32_R_TYPE(i) ((unsigned char)(i)) #define ELF32_R_INFO(s, t) (((s) << 8) + (unsigned char)(t)) typedef struct { Elf64_Xword r_offset; /* where to do it */ Elf64_Xword r_info; /* index & type of relocation */ } Elf64_Rel; typedef struct { Elf64_Xword r_offset; /* where to do it */ Elf64_Xword r_info; /* index & type of relocation */ Elf64_Sxword r_addend; /* adjustment value */ } Elf64_Rela; #define ELF64_R_SYM(info) ((info) >> 32) #define ELF64_R_TYPE(info) ((info)&0xFFFFFFFF) #define ELF64_R_INFO(s, t) (((s) << 32) + (uint32_t)(t)) #if defined(__mips64__) && defined(__MIPSEL__) /* * The 64-bit MIPS ELF ABI uses a slightly different relocation format * than the regular ELF ABI: the r_info field is split into several * pieces (see gnu/usr.bin/binutils-2.17/include/elf/mips.h for details). */ # undef ELF64_R_SYM # undef ELF64_R_TYPE # undef ELF64_R_INFO # define ELF64_R_TYPE(info) ((uint64_t)swap32((info) >> 32)) # define ELF64_R_SYM(info) ((info)&0xFFFFFFFF) # define ELF64_R_INFO(s, t) (((uint64_t)swap32(t) << 32) + (uint32_t)(s)) #endif /* __mips64__ && __MIPSEL__ */ /* Program Header */ typedef struct { Elf32_Word p_type; /* segment type */ Elf32_Off p_offset; /* segment offset */ Elf32_Addr p_vaddr; /* virtual address of segment */ Elf32_Addr p_paddr; /* physical address - ignored? */ Elf32_Word p_filesz; /* number of bytes in file for seg. */ Elf32_Word p_memsz; /* number of bytes in mem. for seg. */ Elf32_Word p_flags; /* flags */ Elf32_Word p_align; /* memory alignment */ } Elf32_Phdr; typedef struct { Elf64_Half p_type; /* entry type */ Elf64_Half p_flags; /* flags */ Elf64_Off p_offset; /* offset */ Elf64_Addr p_vaddr; /* virtual address */ Elf64_Addr p_paddr; /* physical address */ Elf64_Xword p_filesz; /* file size */ Elf64_Xword p_memsz; /* memory size */ Elf64_Xword p_align; /* memory & file alignment */ } Elf64_Phdr; /* Segment types - p_type */ #define PT_NULL 0 /* unused */ #define PT_LOAD 1 /* loadable segment */ #define PT_DYNAMIC 2 /* dynamic linking section */ #define PT_INTERP 3 /* the RTLD */ #define PT_NOTE 4 /* auxiliary information */ #define PT_SHLIB 5 /* reserved - purpose undefined */ #define PT_PHDR 6 /* program header */ #define PT_TLS 7 /* thread local storage */ #define PT_LOOS 0x60000000 /* reserved range for OS */ #define PT_HIOS 0x6fffffff /* specific segment types */ #define PT_LOPROC 0x70000000 /* reserved range for processor */ #define PT_HIPROC 0x7fffffff /* specific segment types */ #define PT_GNU_EH_FRAME 0x6474e550 /* Exception handling info */ #define PT_GNU_RELRO 0x6474e552 /* Read-only after relocation */ #define PT_GNU_STACK 0x6474e551 /* Stack permissions info */ #define PT_OPENBSD_RANDOMIZE 0x65a3dbe6 /* fill with random data */ #define PT_OPENBSD_WXNEEDED 0x65a3dbe7 /* program performs W^X violations */ #define PT_OPENBSD_BOOTDATA 0x65a41be6 /* section for boot arguments */ /* Segment flags - p_flags */ #define PF_X 0x1 /* Executable */ #define PF_W 0x2 /* Writable */ #define PF_R 0x4 /* Readable */ #define PF_MASKPROC 0xf0000000 /* reserved bits for processor */ /* specific segment flags */ /* Dynamic structure */ typedef struct { Elf32_Sword d_tag; /* controls meaning of d_val */ union { Elf32_Word d_val; /* Multiple meanings - see d_tag */ Elf32_Addr d_ptr; /* program virtual address */ } d_un; } Elf32_Dyn; typedef struct { Elf64_Xword d_tag; /* controls meaning of d_val */ union { Elf64_Addr d_ptr; Elf64_Xword d_val; } d_un; } Elf64_Dyn; /* Dynamic Array Tags - d_tag */ #define DT_NULL 0 /* marks end of _DYNAMIC array */ #define DT_NEEDED 1 /* string table offset of needed lib */ #define DT_PLTRELSZ 2 /* size of relocation entries in PLT */ #define DT_PLTGOT 3 /* address PLT/GOT */ #define DT_HASH 4 /* address of symbol hash table */ #define DT_STRTAB 5 /* address of string table */ #define DT_SYMTAB 6 /* address of symbol table */ #define DT_RELA 7 /* address of relocation table */ #define DT_RELASZ 8 /* size of relocation table */ #define DT_RELAENT 9 /* size of relocation entry */ #define DT_STRSZ 10 /* size of string table */ #define DT_SYMENT 11 /* size of symbol table entry */ #define DT_INIT 12 /* address of initialization func. */ #define DT_FINI 13 /* address of termination function */ #define DT_SONAME 14 /* string table offset of shared obj */ #define DT_RPATH 15 /* string table offset of library \ search path */ #define DT_SYMBOLIC 16 /* start sym search in shared obj. */ #define DT_REL 17 /* address of rel. tbl. w addends */ #define DT_RELSZ 18 /* size of DT_REL relocation table */ #define DT_RELENT 19 /* size of DT_REL relocation entry */ #define DT_PLTREL 20 /* PLT referenced relocation entry */ #define DT_DEBUG 21 /* bugger */ #define DT_TEXTREL 22 /* Allow rel. mod. to unwritable seg */ #define DT_JMPREL 23 /* add. of PLT's relocation entries */ #define DT_BIND_NOW 24 /* Bind now regardless of env setting */ #define DT_INIT_ARRAY 25 /* address of array of init func */ #define DT_FINI_ARRAY 26 /* address of array of term func */ #define DT_INIT_ARRAYSZ 27 /* size of array of init func */ #define DT_FINI_ARRAYSZ 28 /* size of array of term func */ #define DT_RUNPATH 29 /* strtab offset of lib search path */ #define DT_FLAGS 30 /* Set of DF_* flags */ #define DT_ENCODING 31 /* further DT_* follow encoding rules */ #define DT_PREINIT_ARRAY 32 /* address of array of preinit func */ #define DT_PREINIT_ARRAYSZ 33 /* size of array of preinit func */ #define DT_LOOS 0x6000000d /* reserved range for OS */ #define DT_HIOS 0x6ffff000 /* specific dynamic array tags */ #define DT_LOPROC 0x70000000 /* reserved range for processor */ #define DT_HIPROC 0x7fffffff /* specific dynamic array tags */ /* some other useful tags */ #define DT_GNU_HASH 0x6ffffef5 /* address of GNU hash table */ #define DT_RELACOUNT 0x6ffffff9 /* if present, number of RELATIVE */ #define DT_RELCOUNT 0x6ffffffa /* relocs, which must come first */ #define DT_FLAGS_1 0x6ffffffb /* Dynamic Flags - DT_FLAGS .dynamic entry */ #define DF_ORIGIN 0x00000001 #define DF_SYMBOLIC 0x00000002 #define DF_TEXTREL 0x00000004 #define DF_BIND_NOW 0x00000008 #define DF_STATIC_TLS 0x00000010 /* Dynamic Flags - DT_FLAGS_1 .dynamic entry */ #define DF_1_NOW 0x00000001 #define DF_1_GLOBAL 0x00000002 #define DF_1_GROUP 0x00000004 #define DF_1_NODELETE 0x00000008 #define DF_1_LOADFLTR 0x00000010 #define DF_1_INITFIRST 0x00000020 #define DF_1_NOOPEN 0x00000040 #define DF_1_ORIGIN 0x00000080 #define DF_1_DIRECT 0x00000100 #define DF_1_TRANS 0x00000200 #define DF_1_INTERPOSE 0x00000400 #define DF_1_NODEFLIB 0x00000800 #define DF_1_NODUMP 0x00001000 #define DF_1_CONLFAT 0x00002000 /* * Note header */ typedef struct { Elf32_Word n_namesz; Elf32_Word n_descsz; Elf32_Word n_type; } Elf32_Nhdr; typedef struct { Elf64_Half n_namesz; Elf64_Half n_descsz; Elf64_Half n_type; } Elf64_Nhdr; /* * Note Definitions */ typedef struct { Elf32_Word namesz; Elf32_Word descsz; Elf32_Word type; } Elf32_Note; typedef struct { Elf64_Half namesz; Elf64_Half descsz; Elf64_Half type; } Elf64_Note; /* Values for n_type. */ #define NT_PRSTATUS 1 /* Process status. */ #define NT_FPREGSET 2 /* Floating point registers. */ #define NT_PRPSINFO 3 /* Process state info. */ /* * OpenBSD-specific core file information. * * OpenBSD ELF core files use notes to provide information about * the process's state. The note name is "OpenBSD" for information * that is global to the process, and "OpenBSD@nn", where "nn" is the * thread ID of the thread that the information belongs to (such as * register state). * * We use the following note identifiers: * * NT_OPENBSD_PROCINFO * Note is a "elfcore_procinfo" structure. * NT_OPENBSD_AUXV * Note is a a bunch of Auxiliary Vectors, terminated by * an AT_NULL entry. * NT_OPENBSD_REGS * Note is a "reg" structure. * NT_OPENBSD_FPREGS * Note is a "fpreg" structure. * * Please try to keep the members of the "elfcore_procinfo" structure * nicely aligned, and if you add elements, add them to the end and * bump the version. */ #define NT_OPENBSD_PROCINFO 10 #define NT_OPENBSD_AUXV 11 #define NT_OPENBSD_REGS 20 #define NT_OPENBSD_FPREGS 21 #define NT_OPENBSD_XFPREGS 22 #define NT_OPENBSD_WCOOKIE 23 struct elfcore_procinfo { /* Version 1 fields start here. */ uint32_t cpi_version; /* netbsd_elfcore_procinfo version */ #define ELFCORE_PROCINFO_VERSION 1 uint32_t cpi_cpisize; /* sizeof(netbsd_elfcore_procinfo) */ uint32_t cpi_signo; /* killing signal */ uint32_t cpi_sigcode; /* signal code */ uint32_t cpi_sigpend; /* pending signals */ uint32_t cpi_sigmask; /* blocked signals */ uint32_t cpi_sigignore; /* ignored signals */ uint32_t cpi_sigcatch; /* signals being caught by user */ int32_t cpi_pid; /* process ID */ int32_t cpi_ppid; /* parent process ID */ int32_t cpi_pgrp; /* process group ID */ int32_t cpi_sid; /* session ID */ uint32_t cpi_ruid; /* real user ID */ uint32_t cpi_euid; /* effective user ID */ uint32_t cpi_svuid; /* saved user ID */ uint32_t cpi_rgid; /* real group ID */ uint32_t cpi_egid; /* effective group ID */ uint32_t cpi_svgid; /* saved group ID */ int8_t cpi_name[32]; /* copy of pr->ps_comm */ }; /* * XXX - these _KERNEL items aren't part of the ABI! */ #if defined(_KERNEL) || defined(_DYN_LOADER) # define ELF32_NO_ADDR ((uint32_t)~0) /* Indicates addr. not yet filled in */ typedef struct { Elf32_Sword au_id; /* 32-bit id */ Elf32_Word au_v; /* 32-bit value */ } Aux32Info; # define ELF64_NO_ADDR ((uint64_t)~0) /* Indicates addr. not yet filled in */ typedef struct { Elf64_Shalf au_id; /* 32-bit id */ Elf64_Xword au_v; /* 64-bit value */ } Aux64Info; enum AuxID { AUX_null = 0, AUX_ignore = 1, AUX_execfd = 2, AUX_phdr = 3, /* &phdr[0] */ AUX_phent = 4, /* sizeof(phdr[0]) */ AUX_phnum = 5, /* # phdr entries */ AUX_pagesz = 6, /* PAGESIZE */ AUX_base = 7, /* ld.so base addr */ AUX_flags = 8, /* processor flags */ AUX_entry = 9, /* a.out entry */ AUX_sun_uid = 2000, /* euid */ AUX_sun_ruid = 2001, /* ruid */ AUX_sun_gid = 2002, /* egid */ AUX_sun_rgid = 2003 /* rgid */ }; struct elf_args { u_long arg_entry; /* program entry point */ u_long arg_interp; /* Interpreter load address */ u_long arg_phaddr; /* program header address */ u_long arg_phentsize; /* Gfx::Size of program header */ u_long arg_phnum; /* Number of program headers */ }; #endif #if !defined(ELFSIZE) && defined(ARCH_ELFSIZE) # define ELFSIZE ARCH_ELFSIZE #endif #if defined(ELFSIZE) # define CONCAT(x, y) __CONCAT(x, y) # define ELFNAME(x) CONCAT(elf, CONCAT(ELFSIZE, CONCAT(_, x))) # define ELFDEFNNAME(x) CONCAT(ELF, CONCAT(ELFSIZE, CONCAT(_, x))) #endif #if defined(ELFSIZE) && (ELFSIZE == 32) # define Elf_Ehdr Elf32_Ehdr # define Elf_Phdr Elf32_Phdr # define Elf_Shdr Elf32_Shdr # define Elf_Sym Elf32_Sym # define Elf_Rel Elf32_Rel # define Elf_RelA Elf32_Rela # define Elf_Dyn Elf32_Dyn # define Elf_Half Elf32_Half # define Elf_Word Elf32_Word # define Elf_Sword Elf32_Sword # define Elf_Addr Elf32_Addr # define Elf_Off Elf32_Off # define Elf_Nhdr Elf32_Nhdr # define Elf_Note Elf32_Note # define ELF_R_SYM ELF32_R_SYM # define ELF_R_TYPE ELF32_R_TYPE # define ELF_R_INFO ELF32_R_INFO # define ELFCLASS ELFCLASS32 # define ELF_ST_BIND ELF32_ST_BIND # define ELF_ST_TYPE ELF32_ST_TYPE # define ELF_ST_INFO ELF32_ST_INFO # define ELF_NO_ADDR ELF32_NO_ADDR # define AuxInfo Aux32Info #elif defined(ELFSIZE) && (ELFSIZE == 64) # define Elf_Ehdr Elf64_Ehdr # define Elf_Phdr Elf64_Phdr # define Elf_Shdr Elf64_Shdr # define Elf_Sym Elf64_Sym # define Elf_Rel Elf64_Rel # define Elf_RelA Elf64_Rela # define Elf_Dyn Elf64_Dyn # define Elf_Half Elf64_Half # define Elf_Word Elf64_Word # define Elf_Sword Elf64_Sword # define Elf_Addr Elf64_Addr # define Elf_Off Elf64_Off # define Elf_Nhdr Elf64_Nhdr # define Elf_Note Elf64_Note # define ELF_R_SYM ELF64_R_SYM # define ELF_R_TYPE ELF64_R_TYPE # define ELF_R_INFO ELF64_R_INFO # define ELFCLASS ELFCLASS64 # define ELF_ST_BIND ELF64_ST_BIND # define ELF_ST_TYPE ELF64_ST_TYPE # define ELF_ST_INFO ELF64_ST_INFO # define ELF_NO_ADDR ELF64_NO_ADDR # define AuxInfo Aux64Info #endif #define ELF_TARG_VER 1 /* The ver for which this code is intended */ /* Relocation types */ #define R_386_NONE 0 #define R_386_32 1 /* Symbol + Addend */ #define R_386_PC32 2 /* Symbol + Addend - Section offset */ #define R_386_GOT32 3 /* Used by build-time linker to create GOT entry */ #define R_386_PLT32 4 /* Used by build-time linker to create PLT entry */ #define R_386_COPY 5 /* https://docs.oracle.com/cd/E23824_01/html/819-0690/chapter4-10454.html#chapter4-84604 */ #define R_386_GLOB_DAT 6 /* Relation b/w GOT entry and symbol */ #define R_386_JMP_SLOT 7 /* Fixed up by dynamic loader */ #define R_386_RELATIVE 8 /* Base address + Addned */ #define R_386_TLS_TPOFF 14 /* Negative offset into the static TLS storage */ #define R_386_TLS_TPOFF32 37 #define R_X86_64_NONE 0 #define R_X86_64_64 1 #define R_X86_64_GLOB_DAT 6 #define R_X86_64_JUMP_SLOT 7 #define R_X86_64_RELATIVE 8