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ladybird/Userland/Libraries/LibC/elf.h
Gunnar Beutner a050b43290 LibELF: Implement x86_64 relocation support 
There are definitely some relocations missing and this is untested
for now.
2021-05-03 08:42:39 +02:00

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/* $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 <sys/types.h>
#else
# include <AK/Types.h>
#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
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