gdb-python/elfcpp/elfcpp.h at 219d1afa89d0d53ca93a684cac341f16470f3ca0 · crash-python/gdb-python

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// elfcpp.h -- main header file for elfcpp -*- C++ -*-

// Written by Ian Lance Taylor <iant@google.com>.

// This file is part of elfcpp.

// This program is free software; you can redistribute it and/or

// modify it under the terms of the GNU Library General Public License

// as published by the Free Software Foundation; either version 2, or

// (at your option) any later version.

// In addition to the permissions in the GNU Library General Public

// License, the Free Software Foundation gives you unlimited

// permission to link the compiled version of this file into

// combinations with other programs, and to distribute those

// combinations without any restriction coming from the use of this

// file. (The Library Public License restrictions do apply in other

// respects; for example, they cover modification of the file, and

// distribution when not linked into a combined executable.)

// This program is distributed in the hope that it will be useful, but

// WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

// Library General Public License for more details.

// You should have received a copy of the GNU Library General Public

// License along with this program; if not, write to the Free Software

// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA

// 02110-1301, USA.

// This is the external interface for elfcpp.

#ifndef ELFCPP_H

#define ELFCPP_H

#include "elfcpp_swap.h"

#include <stdint.h>

namespace elfcpp

{

// Basic ELF types.

// These types are always the same size.

typedef uint16_t Elf_Half;

typedef uint32_t Elf_Word;

typedef int32_t Elf_Sword;

typedef uint64_t Elf_Xword;

typedef int64_t Elf_Sxword;

// These types vary in size depending on the ELF file class. The

// template parameter should be 32 or 64.

template<int size>

struct Elf_types;

template<>

struct Elf_types<32>

{

typedef uint32_t Elf_Addr;

typedef uint32_t Elf_Off;

typedef uint32_t Elf_WXword;

typedef int32_t Elf_Swxword;

};

template<>

struct Elf_types<64>

{

typedef uint64_t Elf_Addr;

typedef uint64_t Elf_Off;

typedef uint64_t Elf_WXword;

typedef int64_t Elf_Swxword;

};

// Offsets within the Ehdr e_ident field.

const int EI_MAG0 = 0;

const int EI_MAG1 = 1;

const int EI_MAG2 = 2;

const int EI_MAG3 = 3;

const int EI_CLASS = 4;

const int EI_DATA = 5;

const int EI_VERSION = 6;

const int EI_OSABI = 7;

const int EI_ABIVERSION = 8;

const int EI_PAD = 9;

const int EI_NIDENT = 16;

// The valid values found in Ehdr e_ident[EI_MAG0 through EI_MAG3].

const int ELFMAG0 = 0x7f;

const int ELFMAG1 = 'E';

const int ELFMAG2 = 'L';

const int ELFMAG3 = 'F';

// The valid values found in Ehdr e_ident[EI_CLASS].

enum

{

ELFCLASSNONE = 0,

ELFCLASS32 = 1,

ELFCLASS64 = 2

};

// The valid values found in Ehdr e_ident[EI_DATA].

enum

{

ELFDATANONE = 0,

ELFDATA2LSB = 1,

ELFDATA2MSB = 2

};

// The valid values found in Ehdr e_ident[EI_VERSION] and e_version.

enum

{

EV_NONE = 0,

EV_CURRENT = 1

};

// The valid values found in Ehdr e_ident[EI_OSABI].

enum ELFOSABI

{

ELFOSABI_NONE = 0,

ELFOSABI_HPUX = 1,

ELFOSABI_NETBSD = 2,

ELFOSABI_GNU = 3,

// ELFOSABI_LINUX is an alias for ELFOSABI_GNU.

ELFOSABI_LINUX = 3,

ELFOSABI_SOLARIS = 6,

ELFOSABI_AIX = 7,

ELFOSABI_IRIX = 8,

ELFOSABI_FREEBSD = 9,

ELFOSABI_TRU64 = 10,

ELFOSABI_MODESTO = 11,

ELFOSABI_OPENBSD = 12,

ELFOSABI_OPENVMS = 13,

ELFOSABI_NSK = 14,

ELFOSABI_AROS = 15,

// A GNU extension for the ARM.

ELFOSABI_ARM = 97,

// A GNU extension for the MSP.

ELFOSABI_STANDALONE = 255

};

// The valid values found in the Ehdr e_type field.

enum ET

{

ET_NONE = 0,

ET_REL = 1,

ET_EXEC = 2,

ET_DYN = 3,

ET_CORE = 4,

ET_LOOS = 0xfe00,

ET_HIOS = 0xfeff,

ET_LOPROC = 0xff00,

ET_HIPROC = 0xffff

};

// The valid values found in the Ehdr e_machine field.

enum EM

{

EM_NONE = 0,

EM_M32 = 1,

EM_SPARC = 2,

EM_386 = 3,

EM_68K = 4,

EM_88K = 5,

EM_IAMCU = 6,

EM_860 = 7,

EM_MIPS = 8,

EM_S370 = 9,

EM_MIPS_RS3_LE = 10,

// 11 was the old Sparc V9 ABI.

// 12 through 14 are reserved.

EM_PARISC = 15,

// 16 is reserved.

// Some old PowerPC object files use 17.

EM_VPP500 = 17,

EM_SPARC32PLUS = 18,

EM_960 = 19,

EM_PPC = 20,

EM_PPC64 = 21,

EM_S390 = 22,

// 23 through 35 are served.

EM_V800 = 36,

EM_FR20 = 37,

EM_RH32 = 38,

EM_RCE = 39,

EM_ARM = 40,

EM_ALPHA = 41,

EM_SH = 42,

EM_SPARCV9 = 43,

EM_TRICORE = 44,

EM_ARC = 45,

EM_H8_300 = 46,

EM_H8_300H = 47,

EM_H8S = 48,

EM_H8_500 = 49,

EM_IA_64 = 50,

EM_MIPS_X = 51,

EM_COLDFIRE = 52,

EM_68HC12 = 53,

EM_MMA = 54,

EM_PCP = 55,

EM_NCPU = 56,

EM_NDR1 = 57,

EM_STARCORE = 58,

EM_ME16 = 59,

EM_ST100 = 60,

EM_TINYJ = 61,

EM_X86_64 = 62,

EM_PDSP = 63,

EM_PDP10 = 64,

EM_PDP11 = 65,

EM_FX66 = 66,

EM_ST9PLUS = 67,

EM_ST7 = 68,

EM_68HC16 = 69,

EM_68HC11 = 70,

EM_68HC08 = 71,

EM_68HC05 = 72,

EM_SVX = 73,

EM_ST19 = 74,

EM_VAX = 75,

EM_CRIS = 76,

EM_JAVELIN = 77,

EM_FIREPATH = 78,

EM_ZSP = 79,

EM_MMIX = 80,

EM_HUANY = 81,

EM_PRISM = 82,

EM_AVR = 83,

EM_FR30 = 84,

EM_D10V = 85,

EM_D30V = 86,

EM_V850 = 87,

EM_M32R = 88,

EM_MN10300 = 89,

EM_MN10200 = 90,

EM_PJ = 91,

EM_OR1K = 92,

EM_ARC_A5 = 93,

EM_XTENSA = 94,

EM_VIDEOCORE = 95,

EM_TMM_GPP = 96,

EM_NS32K = 97,

EM_TPC = 98,

// Some old picoJava object files use 99 (EM_PJ is correct).

EM_SNP1K = 99,

EM_ST200 = 100,

EM_IP2K = 101,

EM_MAX = 102,

EM_CR = 103,

EM_F2MC16 = 104,

EM_MSP430 = 105,

EM_BLACKFIN = 106,

EM_SE_C33 = 107,

EM_SEP = 108,

EM_ARCA = 109,

EM_UNICORE = 110,

EM_ALTERA_NIOS2 = 113,

EM_CRX = 114,

EM_TI_PRU = 144,

EM_AARCH64 = 183,

EM_TILEGX = 191,

// The Morph MT.

EM_MT = 0x2530,

// DLX.

EM_DLX = 0x5aa5,

// FRV.

EM_FRV = 0x5441,

// Infineon Technologies 16-bit microcontroller with C166-V2 core.

EM_X16X = 0x4688,

// Xstorym16

EM_XSTORMY16 = 0xad45,

// Renesas M32C

EM_M32C = 0xfeb0,

// Vitesse IQ2000

EM_IQ2000 = 0xfeba,

// NIOS

EM_NIOS32 = 0xfebb

// Old AVR objects used 0x1057 (EM_AVR is correct).

// Old MSP430 objects used 0x1059 (EM_MSP430 is correct).

// Old FR30 objects used 0x3330 (EM_FR30 is correct).

// Old OpenRISC objects used 0x3426 and 0x8472 (EM_OR1K is correct).

// Old D10V objects used 0x7650 (EM_D10V is correct).

// Old D30V objects used 0x7676 (EM_D30V is correct).

// Old IP2X objects used 0x8217 (EM_IP2K is correct).

// Old PowerPC objects used 0x9025 (EM_PPC is correct).

// Old Alpha objects used 0x9026 (EM_ALPHA is correct).

// Old M32R objects used 0x9041 (EM_M32R is correct).

// Old V850 objects used 0x9080 (EM_V850 is correct).

// Old S/390 objects used 0xa390 (EM_S390 is correct).

// Old Xtensa objects used 0xabc7 (EM_XTENSA is correct).

// Old MN10300 objects used 0xbeef (EM_MN10300 is correct).

// Old MN10200 objects used 0xdead (EM_MN10200 is correct).

};

// A special value found in the Ehdr e_phnum field.

enum

{

// Number of program segments stored in sh_info field of first

// section headre.

PN_XNUM = 0xffff

};

// Special section indices.

enum

{

SHN_UNDEF = 0,

SHN_LORESERVE = 0xff00,

SHN_LOPROC = 0xff00,

SHN_HIPROC = 0xff1f,

SHN_LOOS = 0xff20,

SHN_HIOS = 0xff3f,

SHN_ABS = 0xfff1,

SHN_COMMON = 0xfff2,

SHN_XINDEX = 0xffff,

SHN_HIRESERVE = 0xffff,

// Provide for initial and final section ordering in conjunction

// with the SHF_LINK_ORDER and SHF_ORDERED section flags.

SHN_BEFORE = 0xff00,

SHN_AFTER = 0xff01,

// x86_64 specific large common symbol.

SHN_X86_64_LCOMMON = 0xff02

};

// The valid values found in the Shdr sh_type field.

enum SHT

{

SHT_NULL = 0,

SHT_PROGBITS = 1,

SHT_SYMTAB = 2,

SHT_STRTAB = 3,

SHT_RELA = 4,

SHT_HASH = 5,

SHT_DYNAMIC = 6,

SHT_NOTE = 7,

SHT_NOBITS = 8,

SHT_REL = 9,

SHT_SHLIB = 10,

SHT_DYNSYM = 11,

SHT_INIT_ARRAY = 14,

SHT_FINI_ARRAY = 15,

SHT_PREINIT_ARRAY = 16,

SHT_GROUP = 17,

SHT_SYMTAB_SHNDX = 18,

SHT_LOOS = 0x60000000,

SHT_HIOS = 0x6fffffff,

SHT_LOPROC = 0x70000000,

SHT_HIPROC = 0x7fffffff,

SHT_LOUSER = 0x80000000,

SHT_HIUSER = 0xffffffff,

// The remaining values are not in the standard.

// Incremental build data.

SHT_GNU_INCREMENTAL_INPUTS = 0x6fff4700,

SHT_GNU_INCREMENTAL_SYMTAB = 0x6fff4701,

SHT_GNU_INCREMENTAL_RELOCS = 0x6fff4702,

SHT_GNU_INCREMENTAL_GOT_PLT = 0x6fff4703,

// Object attributes.

SHT_GNU_ATTRIBUTES = 0x6ffffff5,

// GNU style dynamic hash table.

SHT_GNU_HASH = 0x6ffffff6,

// List of prelink dependencies.

SHT_GNU_LIBLIST = 0x6ffffff7,

// Versions defined by file.

SHT_SUNW_verdef = 0x6ffffffd,

SHT_GNU_verdef = 0x6ffffffd,

// Versions needed by file.

SHT_SUNW_verneed = 0x6ffffffe,

SHT_GNU_verneed = 0x6ffffffe,

// Symbol versions,

SHT_SUNW_versym = 0x6fffffff,

SHT_GNU_versym = 0x6fffffff,

SHT_SPARC_GOTDATA = 0x70000000,

// ARM-specific section types.

// Exception Index table.

SHT_ARM_EXIDX = 0x70000001,

// BPABI DLL dynamic linking pre-emption map.

SHT_ARM_PREEMPTMAP = 0x70000002,

// Object file compatibility attributes.

SHT_ARM_ATTRIBUTES = 0x70000003,

// Support for debugging overlaid programs.

SHT_ARM_DEBUGOVERLAY = 0x70000004,

SHT_ARM_OVERLAYSECTION = 0x70000005,

// x86_64 unwind information.

SHT_X86_64_UNWIND = 0x70000001,

// MIPS-specific section types.

// Section contains register usage information.

SHT_MIPS_REGINFO = 0x70000006,

// Section contains miscellaneous options.

SHT_MIPS_OPTIONS = 0x7000000d,

// ABI related flags section.

SHT_MIPS_ABIFLAGS = 0x7000002a,

// AARCH64-specific section type.

SHT_AARCH64_ATTRIBUTES = 0x70000003,

// Link editor is to sort the entries in this section based on the

// address specified in the associated symbol table entry.

SHT_ORDERED = 0x7fffffff

};

// The valid bit flags found in the Shdr sh_flags field.

enum SHF

{

SHF_WRITE = 0x1,

SHF_ALLOC = 0x2,

SHF_EXECINSTR = 0x4,

SHF_MERGE = 0x10,

SHF_STRINGS = 0x20,

SHF_INFO_LINK = 0x40,

SHF_LINK_ORDER = 0x80,

SHF_OS_NONCONFORMING = 0x100,

SHF_GROUP = 0x200,

SHF_TLS = 0x400,

SHF_COMPRESSED = 0x800,

SHF_MASKOS = 0x0ff00000,

SHF_MASKPROC = 0xf0000000,

// Indicates this section requires ordering in relation to

// other sections of the same type. Ordered sections are

// combined within the section pointed to by the sh_link entry.

// The sh_info values SHN_BEFORE and SHN_AFTER imply that the

// sorted section is to precede or follow, respectively, all

// other sections in the set being ordered.

SHF_ORDERED = 0x40000000,

// This section is excluded from input to the link-edit of an

// executable or shared object. This flag is ignored if SHF_ALLOC

// is also set, or if relocations exist against the section.

SHF_EXCLUDE = 0x80000000,

// Section with data that is GP relative addressable.

SHF_MIPS_GPREL = 0x10000000,

// x86_64 specific large section.

SHF_X86_64_LARGE = 0x10000000

};

// Values which appear in the first Elf_WXword of the section data

// of a SHF_COMPRESSED section.

enum

{

ELFCOMPRESS_ZLIB = 1,

ELFCOMPRESS_LOOS = 0x60000000,

ELFCOMPRESS_HIOS = 0x6fffffff,

ELFCOMPRESS_LOPROC = 0x70000000,

ELFCOMPRESS_HIPROC = 0x7fffffff,

};

// Bit flags which appear in the first 32-bit word of the section data

// of a SHT_GROUP section.

enum

{

GRP_COMDAT = 0x1,

GRP_MASKOS = 0x0ff00000,

GRP_MASKPROC = 0xf0000000

};

// The valid values found in the Phdr p_type field.

enum PT

{

PT_NULL = 0,

PT_LOAD = 1,

PT_DYNAMIC = 2,

PT_INTERP = 3,

PT_NOTE = 4,

PT_SHLIB = 5,

PT_PHDR = 6,

PT_TLS = 7,

PT_LOOS = 0x60000000,

PT_HIOS = 0x6fffffff,

PT_LOPROC = 0x70000000,

PT_HIPROC = 0x7fffffff,

// The remaining values are not in the standard.

// Frame unwind information.

PT_GNU_EH_FRAME = 0x6474e550,

PT_SUNW_EH_FRAME = 0x6474e550,

// Stack flags.

PT_GNU_STACK = 0x6474e551,

// Read only after relocation.

PT_GNU_RELRO = 0x6474e552,

// Platform architecture compatibility information

PT_ARM_ARCHEXT = 0x70000000,

// Exception unwind tables

PT_ARM_EXIDX = 0x70000001,

// Register usage information. Identifies one .reginfo section.

PT_MIPS_REGINFO =0x70000000,

// Runtime procedure table.

PT_MIPS_RTPROC = 0x70000001,

// .MIPS.options section.

PT_MIPS_OPTIONS = 0x70000002,

// .MIPS.abiflags section.

PT_MIPS_ABIFLAGS = 0x70000003,

// Platform architecture compatibility information

PT_AARCH64_ARCHEXT = 0x70000000,

// Exception unwind tables

PT_AARCH64_UNWIND = 0x70000001,

// 4k page table size

PT_S390_PGSTE = 0x70000000,

};

// The valid bit flags found in the Phdr p_flags field.

enum PF

{

PF_X = 0x1,

PF_W = 0x2,

PF_R = 0x4,

PF_MASKOS = 0x0ff00000,

PF_MASKPROC = 0xf0000000

};

// Symbol binding from Sym st_info field.

enum STB

{

STB_LOCAL = 0,

STB_GLOBAL = 1,

STB_WEAK = 2,

STB_LOOS = 10,

STB_GNU_UNIQUE = 10,

STB_HIOS = 12,

STB_LOPROC = 13,

STB_HIPROC = 15

};

// Symbol types from Sym st_info field.

enum STT

{

STT_NOTYPE = 0,

STT_OBJECT = 1,

STT_FUNC = 2,

STT_SECTION = 3,

STT_FILE = 4,

STT_COMMON = 5,

STT_TLS = 6,

// GNU extension: symbol value points to a function which is called

// at runtime to determine the final value of the symbol.

STT_GNU_IFUNC = 10,

STT_LOOS = 10,

STT_HIOS = 12,

STT_LOPROC = 13,

STT_HIPROC = 15,

// The section type that must be used for register symbols on

// Sparc. These symbols initialize a global register.

STT_SPARC_REGISTER = 13,

// ARM: a THUMB function. This is not defined in ARM ELF Specification but

// used by the GNU tool-chain.

STT_ARM_TFUNC = 13

};

inline STB

elf_st_bind(unsigned char info)

{

return static_cast<STB>(info >> 4);

}

inline STT

elf_st_type(unsigned char info)

{

return static_cast<STT>(info & 0xf);

}

inline unsigned char

elf_st_info(STB bind, STT type)

{

return ((static_cast<unsigned char>(bind) << 4)

+ (static_cast<unsigned char>(type) & 0xf));

}

// Symbol visibility from Sym st_other field.

enum STV

{

STV_DEFAULT = 0,

STV_INTERNAL = 1,

STV_HIDDEN = 2,

STV_PROTECTED = 3

};

inline STV

elf_st_visibility(unsigned char other)

{

return static_cast<STV>(other & 0x3);

}

inline unsigned char

elf_st_nonvis(unsigned char other)

{

return static_cast<STV>(other >> 2);

}

inline unsigned char

elf_st_other(STV vis, unsigned char nonvis)

{

return ((nonvis << 2)

+ (static_cast<unsigned char>(vis) & 3));

}

// Reloc information from Rel/Rela r_info field.

template<int size>

unsigned int

elf_r_sym(typename Elf_types<size>::Elf_WXword);

template<>

inline unsigned int

elf_r_sym<32>(Elf_Word v)

{

return v >> 8;

}

template<>

inline unsigned int

elf_r_sym<64>(Elf_Xword v)

{

return v >> 32;

}

template<int size>

unsigned int

elf_r_type(typename Elf_types<size>::Elf_WXword);

template<>

inline unsigned int

elf_r_type<32>(Elf_Word v)

{

return v & 0xff;

}

template<>

inline unsigned int

elf_r_type<64>(Elf_Xword v)

{

return v & 0xffffffff;

}

template<int size>

typename Elf_types<size>::Elf_WXword

elf_r_info(unsigned int s, unsigned int t);

template<>

inline Elf_Word

elf_r_info<32>(unsigned int s, unsigned int t)

{

return (s << 8) + (t & 0xff);

}

template<>

inline Elf_Xword

elf_r_info<64>(unsigned int s, unsigned int t)

{

return (static_cast<Elf_Xword>(s) << 32) + (t & 0xffffffff);

}

// Dynamic tags found in the PT_DYNAMIC segment.

enum DT

{

DT_NULL = 0,

DT_NEEDED = 1,

DT_PLTRELSZ = 2,

DT_PLTGOT = 3,

DT_HASH = 4,

DT_STRTAB = 5,

DT_SYMTAB = 6,

DT_RELA = 7,

DT_RELASZ = 8,

DT_RELAENT = 9,

DT_STRSZ = 10,

DT_SYMENT = 11,

DT_INIT = 12,

DT_FINI = 13,

DT_SONAME = 14,

DT_RPATH = 15,

DT_SYMBOLIC = 16,

DT_REL = 17,

DT_RELSZ = 18,

DT_RELENT = 19,

DT_PLTREL = 20,

DT_DEBUG = 21,

DT_TEXTREL = 22,

DT_JMPREL = 23,

DT_BIND_NOW = 24,

DT_INIT_ARRAY = 25,

DT_FINI_ARRAY = 26,

DT_INIT_ARRAYSZ = 27,

DT_FINI_ARRAYSZ = 28,

DT_RUNPATH = 29,

DT_FLAGS = 30,

// This is used to mark a range of dynamic tags. It is not really

// a tag value.

DT_ENCODING = 32,

DT_PREINIT_ARRAY = 32,

DT_PREINIT_ARRAYSZ = 33,

DT_LOOS = 0x6000000d,

DT_HIOS = 0x6ffff000,

DT_LOPROC = 0x70000000,

DT_HIPROC = 0x7fffffff,

// The remaining values are extensions used by GNU or Solaris.

DT_VALRNGLO = 0x6ffffd00,

DT_GNU_PRELINKED = 0x6ffffdf5,

DT_GNU_CONFLICTSZ = 0x6ffffdf6,

DT_GNU_LIBLISTSZ = 0x6ffffdf7,

DT_CHECKSUM = 0x6ffffdf8,

DT_PLTPADSZ = 0x6ffffdf9,

DT_MOVEENT = 0x6ffffdfa,

DT_MOVESZ = 0x6ffffdfb,

DT_FEATURE = 0x6ffffdfc,

DT_POSFLAG_1 = 0x6ffffdfd,

DT_SYMINSZ = 0x6ffffdfe,

DT_SYMINENT = 0x6ffffdff,

DT_VALRNGHI = 0x6ffffdff,

DT_ADDRRNGLO = 0x6ffffe00,

DT_GNU_HASH = 0x6ffffef5,

DT_TLSDESC_PLT = 0x6ffffef6,

DT_TLSDESC_GOT = 0x6ffffef7,

DT_GNU_CONFLICT = 0x6ffffef8,

DT_GNU_LIBLIST = 0x6ffffef9,

DT_CONFIG = 0x6ffffefa,

DT_DEPAUDIT = 0x6ffffefb,

DT_AUDIT = 0x6ffffefc,

DT_PLTPAD = 0x6ffffefd,

DT_MOVETAB = 0x6ffffefe,

DT_SYMINFO = 0x6ffffeff,

DT_ADDRRNGHI = 0x6ffffeff,

DT_RELACOUNT = 0x6ffffff9,

DT_RELCOUNT = 0x6ffffffa,

DT_FLAGS_1 = 0x6ffffffb,

DT_VERDEF = 0x6ffffffc,

DT_VERDEFNUM = 0x6ffffffd,

DT_VERNEED = 0x6ffffffe,

DT_VERNEEDNUM = 0x6fffffff,

DT_VERSYM = 0x6ffffff0,

// Specify the value of _GLOBAL_OFFSET_TABLE_.

DT_PPC_GOT = 0x70000000,

// Specify whether various optimisations are possible.

DT_PPC_OPT = 0x70000001,

// Specify the start of the .glink section.

DT_PPC64_GLINK = 0x70000000,

// Specify the start and size of the .opd section.

DT_PPC64_OPD = 0x70000001,

DT_PPC64_OPDSZ = 0x70000002,

// Specify whether various optimisations are possible.

DT_PPC64_OPT = 0x70000003,

// The index of an STT_SPARC_REGISTER symbol within the DT_SYMTAB

// symbol table. One dynamic entry exists for every STT_SPARC_REGISTER

// symbol in the symbol table.

DT_SPARC_REGISTER = 0x70000001,

// MIPS specific dynamic array tags.

// 32 bit version number for runtime linker interface.

DT_MIPS_RLD_VERSION = 0x70000001,

// Time stamp.

DT_MIPS_TIME_STAMP = 0x70000002,

// Checksum of external strings and common sizes.

DT_MIPS_ICHECKSUM = 0x70000003,

// Index of version string in string table.

DT_MIPS_IVERSION = 0x70000004,

// 32 bits of flags.

DT_MIPS_FLAGS = 0x70000005,

// Base address of the segment.

DT_MIPS_BASE_ADDRESS = 0x70000006,

// ???

DT_MIPS_MSYM = 0x70000007,

// Address of .conflict section.

DT_MIPS_CONFLICT = 0x70000008,

// Address of .liblist section.

DT_MIPS_LIBLIST = 0x70000009,

// Number of local global offset table entries.

DT_MIPS_LOCAL_GOTNO = 0x7000000a,

// Number of entries in the .conflict section.

DT_MIPS_CONFLICTNO = 0x7000000b,

// Number of entries in the .liblist section.

DT_MIPS_LIBLISTNO = 0x70000010,

// Number of entries in the .dynsym section.

DT_MIPS_SYMTABNO = 0x70000011,

// Index of first external dynamic symbol not referenced locally.

DT_MIPS_UNREFEXTNO = 0x70000012,

// Index of first dynamic symbol in global offset table.

DT_MIPS_GOTSYM = 0x70000013,

// Number of page table entries in global offset table.

DT_MIPS_HIPAGENO = 0x70000014,

// Address of run time loader map, used for debugging.

DT_MIPS_RLD_MAP = 0x70000016,

// Delta C++ class definition.

DT_MIPS_DELTA_CLASS = 0x70000017,

// Number of entries in DT_MIPS_DELTA_CLASS.

DT_MIPS_DELTA_CLASS_NO = 0x70000018,

// Delta C++ class instances.

DT_MIPS_DELTA_INSTANCE = 0x70000019,

// Number of entries in DT_MIPS_DELTA_INSTANCE.

DT_MIPS_DELTA_INSTANCE_NO = 0x7000001a,

// Delta relocations.

DT_MIPS_DELTA_RELOC = 0x7000001b,

// Number of entries in DT_MIPS_DELTA_RELOC.

DT_MIPS_DELTA_RELOC_NO = 0x7000001c,

// Delta symbols that Delta relocations refer to.

DT_MIPS_DELTA_SYM = 0x7000001d,

// Number of entries in DT_MIPS_DELTA_SYM.

DT_MIPS_DELTA_SYM_NO = 0x7000001e,

// Delta symbols that hold class declarations.

DT_MIPS_DELTA_CLASSSYM = 0x70000020,

// Number of entries in DT_MIPS_DELTA_CLASSSYM.

DT_MIPS_DELTA_CLASSSYM_NO = 0x70000021,

// Flags indicating information about C++ flavor.

DT_MIPS_CXX_FLAGS = 0x70000022,

// Pixie information (???).

DT_MIPS_PIXIE_INIT = 0x70000023,

// Address of .MIPS.symlib

DT_MIPS_SYMBOL_LIB = 0x70000024,

// The GOT index of the first PTE for a segment

DT_MIPS_LOCALPAGE_GOTIDX = 0x70000025,

// The GOT index of the first PTE for a local symbol

DT_MIPS_LOCAL_GOTIDX = 0x70000026,

// The GOT index of the first PTE for a hidden symbol

DT_MIPS_HIDDEN_GOTIDX = 0x70000027,

// The GOT index of the first PTE for a protected symbol

DT_MIPS_PROTECTED_GOTIDX = 0x70000028,

// Address of `.MIPS.options'.

DT_MIPS_OPTIONS = 0x70000029,

// Address of `.interface'.

DT_MIPS_INTERFACE = 0x7000002a,

// ???

DT_MIPS_DYNSTR_ALIGN = 0x7000002b,

// Size of the .interface section.

DT_MIPS_INTERFACE_SIZE = 0x7000002c,

// Size of rld_text_resolve function stored in the GOT.

DT_MIPS_RLD_TEXT_RESOLVE_ADDR = 0x7000002d,

// Default suffix of DSO to be added by rld on dlopen() calls.

DT_MIPS_PERF_SUFFIX = 0x7000002e,

// Size of compact relocation section (O32).

DT_MIPS_COMPACT_SIZE = 0x7000002f,

// GP value for auxiliary GOTs.

DT_MIPS_GP_VALUE = 0x70000030,

// Address of auxiliary .dynamic.

DT_MIPS_AUX_DYNAMIC = 0x70000031,

// Address of the base of the PLTGOT.

DT_MIPS_PLTGOT = 0x70000032,

// Points to the base of a writable PLT.

DT_MIPS_RWPLT = 0x70000034,

// Relative offset of run time loader map, used for debugging.

DT_MIPS_RLD_MAP_REL = 0x70000035,

DT_AUXILIARY = 0x7ffffffd,

DT_USED = 0x7ffffffe,

DT_FILTER = 0x7fffffff

};

// Flags found in the DT_FLAGS dynamic element.

enum DF

{

DF_ORIGIN = 0x1,

DF_SYMBOLIC = 0x2,

DF_TEXTREL = 0x4,

DF_BIND_NOW = 0x8,

DF_STATIC_TLS = 0x10

};

// Flags found in the DT_FLAGS_1 dynamic element.

enum DF_1

{

DF_1_NOW = 0x1,

DF_1_GLOBAL = 0x2,

DF_1_GROUP = 0x4,

DF_1_NODELETE = 0x8,

DF_1_LOADFLTR = 0x10,

DF_1_INITFIRST = 0x20,

DF_1_NOOPEN = 0x40,

DF_1_ORIGIN = 0x80,

DF_1_DIRECT = 0x100,

DF_1_TRANS = 0x200,

DF_1_INTERPOSE = 0x400,

DF_1_NODEFLIB = 0x800,

DF_1_NODUMP = 0x1000,

DF_1_CONLFAT = 0x2000

};

// Version numbers which appear in the vd_version field of a Verdef

// structure.

const int VER_DEF_NONE = 0;

const int VER_DEF_CURRENT = 1;

// Version numbers which appear in the vn_version field of a Verneed

// structure.

const int VER_NEED_NONE = 0;

const int VER_NEED_CURRENT = 1;

// Bit flags which appear in vd_flags of Verdef and vna_flags of

// Vernaux.

const int VER_FLG_BASE = 0x1;

const int VER_FLG_WEAK = 0x2;

const int VER_FLG_INFO = 0x4;

// Special constants found in the SHT_GNU_versym entries.

const int VER_NDX_LOCAL = 0;

const int VER_NDX_GLOBAL = 1;

// A SHT_GNU_versym section holds 16-bit words. This bit is set if

// the symbol is hidden and can only be seen when referenced using an

// explicit version number. This is a GNU extension.

const int VERSYM_HIDDEN = 0x8000;

// This is the mask for the rest of the data in a word read from a

// SHT_GNU_versym section.

const int VERSYM_VERSION = 0x7fff;

// Note descriptor type codes for notes in a non-core file with an

// empty name.

enum

{

// A version string.

NT_VERSION = 1,

// An architecture string.

NT_ARCH = 2

};

// Note descriptor type codes for notes in a non-core file with the

// name "GNU".

enum

{

// The minimum ABI level. This is used by the dynamic linker to

// describe the minimal kernel version on which a shared library may

// be used. Th value should be four words. Word 0 is an OS

// descriptor (see below). Word 1 is the major version of the ABI.

// Word 2 is the minor version. Word 3 is the subminor version.

NT_GNU_ABI_TAG = 1,

// Hardware capabilities information. Word 0 is the number of

// entries. Word 1 is a bitmask of enabled entries. The rest of

// the descriptor is a series of entries, where each entry is a

// single byte followed by a nul terminated string. The byte gives

// the bit number to test if enabled in the bitmask.

NT_GNU_HWCAP = 2,

// The build ID as set by the linker's --build-id option. The

// format of the descriptor depends on the build ID style.

NT_GNU_BUILD_ID = 3,

// The version of gold used to link. Th descriptor is just a

// string.

NT_GNU_GOLD_VERSION = 4

};

// The OS values which may appear in word 0 of a NT_GNU_ABI_TAG note.

enum

{

ELF_NOTE_OS_LINUX = 0,

ELF_NOTE_OS_GNU = 1,

ELF_NOTE_OS_SOLARIS2 = 2,

ELF_NOTE_OS_FREEBSD = 3,

ELF_NOTE_OS_NETBSD = 4,

ELF_NOTE_OS_SYLLABLE = 5

};

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