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/*

 * ELF constants and data structures

 *

 * Derived from:

 * $FreeBSD: src/sys/sys/elf32.h,v 1.8.14.1 2005/12/30 22:13:58 marcel Exp $

 * $FreeBSD: src/sys/sys/elf64.h,v 1.10.14.1 2005/12/30 22:13:58 marcel Exp $

 * $FreeBSD: src/sys/sys/elf_common.h,v 1.15.8.1 2005/12/30 22:13:58 marcel Exp $

 * $FreeBSD: src/sys/alpha/include/elf.h,v 1.14 2003/09/25 01:10:22 peter Exp $

 * $FreeBSD: src/sys/amd64/include/elf.h,v 1.18 2004/08/03 08:21:48 dfr Exp $

 * $FreeBSD: src/sys/arm/include/elf.h,v 1.5.2.1 2006/06/30 21:42:52 cognet Exp $

 * $FreeBSD: src/sys/i386/include/elf.h,v 1.16 2004/08/02 19:12:17 dfr Exp $

 * $FreeBSD: src/sys/powerpc/include/elf.h,v 1.7 2004/11/02 09:47:01 ssouhlal Exp $

 * $FreeBSD: src/sys/sparc64/include/elf.h,v 1.12 2003/09/25 01:10:26 peter Exp $

 *

 * Copyright (c) 1996-1998 John D. Polstra.  All rights reserved.

 * Copyright (c) 2001 David E. O'Brien

 * Portions Copyright 2009 The Go Authors.  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 AUTHOR 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 AUTHOR 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.

 */

package elf

import "strconv"

/*

 * Constants

 */

// Indexes into the Header.Ident array.

const (

        EI_CLASS      = 4  /* Class of machine. */

        EI_DATA       = 5  /* Data format. */

        EI_VERSION    = 6  /* ELF format version. */

        EI_OSABI      = 7  /* Operating system / ABI identification */

        EI_ABIVERSION = 8  /* ABI version */

        EI_PAD        = 9  /* Start of padding (per SVR4 ABI). */

        EI_NIDENT     = 16 /* Size of e_ident array. */

)

// Initial magic number for ELF files.

const ELFMAG = "\177ELF"

// Version is found in Header.Ident[EI_VERSION] and Header.Version.

type Version byte

const (

        EV_NONE    Version = 0

        EV_CURRENT Version = 1

)

var versionStrings = []intName{

        {0, "EV_NONE"},

        {1, "EV_CURRENT"},

}

func (i Version) String() string   { return stringName(uint32(i), versionStrings, false) }

func (i Version) GoString() string { return stringName(uint32(i), versionStrings, true) }

// Class is found in Header.Ident[EI_CLASS] and Header.Class.

type Class byte

const (

        ELFCLASSNONE Class = 0 /* Unknown class. */

        ELFCLASS32   Class = 1 /* 32-bit architecture. */

        ELFCLASS64   Class = 2 /* 64-bit architecture. */

)

var classStrings = []intName{

        {0, "ELFCLASSNONE"},

        {1, "ELFCLASS32"},

        {2, "ELFCLASS64"},

}

func (i Class) String() string   { return stringName(uint32(i), classStrings, false) }

func (i Class) GoString() string { return stringName(uint32(i), classStrings, true) }

// Data is found in Header.Ident[EI_DATA] and Header.Data.

type Data byte

const (

        ELFDATANONE Data = 0 /* Unknown data format. */

        ELFDATA2LSB Data = 1 /* 2's complement little-endian. */

        ELFDATA2MSB Data = 2 /* 2's complement big-endian. */

)

var dataStrings = []intName{

        {0, "ELFDATANONE"},

        {1, "ELFDATA2LSB"},

        {2, "ELFDATA2MSB"},

}

func (i Data) String() string   { return stringName(uint32(i), dataStrings, false) }

func (i Data) GoString() string { return stringName(uint32(i), dataStrings, true) }

// OSABI is found in Header.Ident[EI_OSABI] and Header.OSABI.

type OSABI byte

const (

        ELFOSABI_NONE       OSABI = 0   /* UNIX System V ABI */

        ELFOSABI_HPUX       OSABI = 1   /* HP-UX operating system */

        ELFOSABI_NETBSD     OSABI = 2   /* NetBSD */

        ELFOSABI_LINUX      OSABI = 3   /* GNU/Linux */

        ELFOSABI_HURD       OSABI = 4   /* GNU/Hurd */

        ELFOSABI_86OPEN     OSABI = 5   /* 86Open common IA32 ABI */

        ELFOSABI_SOLARIS    OSABI = 6   /* Solaris */

        ELFOSABI_AIX        OSABI = 7   /* AIX */

        ELFOSABI_IRIX       OSABI = 8   /* IRIX */

        ELFOSABI_FREEBSD    OSABI = 9   /* FreeBSD */

        ELFOSABI_TRU64      OSABI = 10  /* TRU64 UNIX */

        ELFOSABI_MODESTO    OSABI = 11  /* Novell Modesto */

        ELFOSABI_OPENBSD    OSABI = 12  /* OpenBSD */

        ELFOSABI_OPENVMS    OSABI = 13  /* Open VMS */

        ELFOSABI_NSK        OSABI = 14  /* HP Non-Stop Kernel */

        ELFOSABI_ARM        OSABI = 97  /* ARM */

        ELFOSABI_STANDALONE OSABI = 255 /* Standalone (embedded) application */

)

var osabiStrings = []intName{

        {0, "ELFOSABI_NONE"},

        {1, "ELFOSABI_HPUX"},

        {2, "ELFOSABI_NETBSD"},

        {3, "ELFOSABI_LINUX"},

        {4, "ELFOSABI_HURD"},

        {5, "ELFOSABI_86OPEN"},

        {6, "ELFOSABI_SOLARIS"},

        {7, "ELFOSABI_AIX"},

        {8, "ELFOSABI_IRIX"},

        {9, "ELFOSABI_FREEBSD"},

        {10, "ELFOSABI_TRU64"},

        {11, "ELFOSABI_MODESTO"},

        {12, "ELFOSABI_OPENBSD"},

        {13, "ELFOSABI_OPENVMS"},

        {14, "ELFOSABI_NSK"},

        {97, "ELFOSABI_ARM"},

        {255, "ELFOSABI_STANDALONE"},

}

func (i OSABI) String() string   { return stringName(uint32(i), osabiStrings, false) }

func (i OSABI) GoString() string { return stringName(uint32(i), osabiStrings, true) }

// Type is found in Header.Type.

type Type uint16

const (

        ET_NONE   Type = 0      /* Unknown type. */

        ET_REL    Type = 1      /* Relocatable. */

        ET_EXEC   Type = 2      /* Executable. */

        ET_DYN    Type = 3      /* Shared object. */

        ET_CORE   Type = 4      /* Core file. */

        ET_LOOS   Type = 0xfe00 /* First operating system specific. */

        ET_HIOS   Type = 0xfeff /* Last operating system-specific. */

        ET_LOPROC Type = 0xff00 /* First processor-specific. */

        ET_HIPROC Type = 0xffff /* Last processor-specific. */

)

var typeStrings = []intName{

        {0, "ET_NONE"},

        {1, "ET_REL"},

        {2, "ET_EXEC"},

        {3, "ET_DYN"},

        {4, "ET_CORE"},

        {0xfe00, "ET_LOOS"},

        {0xfeff, "ET_HIOS"},

        {0xff00, "ET_LOPROC"},

        {0xffff, "ET_HIPROC"},

}

func (i Type) String() string   { return stringName(uint32(i), typeStrings, false) }

func (i Type) GoString() string { return stringName(uint32(i), typeStrings, true) }

// Machine is found in Header.Machine.

type Machine uint16

const (

        EM_NONE        Machine = 0  /* Unknown machine. */

        EM_M32         Machine = 1  /* AT&T WE32100. */

        EM_SPARC       Machine = 2  /* Sun SPARC. */

        EM_386         Machine = 3  /* Intel i386. */

        EM_68K         Machine = 4  /* Motorola 68000. */

        EM_88K         Machine = 5  /* Motorola 88000. */

        EM_860         Machine = 7  /* Intel i860. */

        EM_MIPS        Machine = 8  /* MIPS R3000 Big-Endian only. */

        EM_S370        Machine = 9  /* IBM System/370. */

        EM_MIPS_RS3_LE Machine = 10 /* MIPS R3000 Little-Endian. */

        EM_PARISC      Machine = 15 /* HP PA-RISC. */

        EM_VPP500      Machine = 17 /* Fujitsu VPP500. */

        EM_SPARC32PLUS Machine = 18 /* SPARC v8plus. */

        EM_960         Machine = 19 /* Intel 80960. */

        EM_PPC         Machine = 20 /* PowerPC 32-bit. */

        EM_PPC64       Machine = 21 /* PowerPC 64-bit. */

        EM_S390        Machine = 22 /* IBM System/390. */

        EM_V800        Machine = 36 /* NEC V800. */

        EM_FR20        Machine = 37 /* Fujitsu FR20. */

        EM_RH32        Machine = 38 /* TRW RH-32. */

        EM_RCE         Machine = 39 /* Motorola RCE. */

        EM_ARM         Machine = 40 /* ARM. */

        EM_SH          Machine = 42 /* Hitachi SH. */

        EM_SPARCV9     Machine = 43 /* SPARC v9 64-bit. */

        EM_TRICORE     Machine = 44 /* Siemens TriCore embedded processor. */

        EM_ARC         Machine = 45 /* Argonaut RISC Core. */

        EM_H8_300      Machine = 46 /* Hitachi H8/300. */

        EM_H8_300H     Machine = 47 /* Hitachi H8/300H. */

        EM_H8S         Machine = 48 /* Hitachi H8S. */

        EM_H8_500      Machine = 49 /* Hitachi H8/500. */

        EM_IA_64       Machine = 50 /* Intel IA-64 Processor. */

        EM_MIPS_X      Machine = 51 /* Stanford MIPS-X. */

        EM_COLDFIRE    Machine = 52 /* Motorola ColdFire. */

        EM_68HC12      Machine = 53 /* Motorola M68HC12. */

        EM_MMA         Machine = 54 /* Fujitsu MMA. */

        EM_PCP         Machine = 55 /* Siemens PCP. */

        EM_NCPU        Machine = 56 /* Sony nCPU. */

        EM_NDR1        Machine = 57 /* Denso NDR1 microprocessor. */

        EM_STARCORE    Machine = 58 /* Motorola Star*Core processor. */

        EM_ME16        Machine = 59 /* Toyota ME16 processor. */

        EM_ST100       Machine = 60 /* STMicroelectronics ST100 processor. */

        EM_TINYJ       Machine = 61 /* Advanced Logic Corp. TinyJ processor. */

        EM_X86_64      Machine = 62 /* Advanced Micro Devices x86-64 */

        /* Non-standard or deprecated. */

        EM_486         Machine = 6      /* Intel i486. */

        EM_MIPS_RS4_BE Machine = 10     /* MIPS R4000 Big-Endian */

        EM_ALPHA_STD   Machine = 41     /* Digital Alpha (standard value). */

        EM_ALPHA       Machine = 0x9026 /* Alpha (written in the absence of an ABI) */

)

var machineStrings = []intName{

        {0, "EM_NONE"},

        {1, "EM_M32"},

        {2, "EM_SPARC"},

        {3, "EM_386"},

        {4, "EM_68K"},

        {5, "EM_88K"},

        {7, "EM_860"},

        {8, "EM_MIPS"},

        {9, "EM_S370"},

        {10, "EM_MIPS_RS3_LE"},

        {15, "EM_PARISC"},

        {17, "EM_VPP500"},

        {18, "EM_SPARC32PLUS"},

        {19, "EM_960"},

        {20, "EM_PPC"},

        {21, "EM_PPC64"},

        {22, "EM_S390"},

        {36, "EM_V800"},

        {37, "EM_FR20"},

        {38, "EM_RH32"},

        {39, "EM_RCE"},

        {40, "EM_ARM"},

        {42, "EM_SH"},

        {43, "EM_SPARCV9"},

        {44, "EM_TRICORE"},

        {45, "EM_ARC"},

        {46, "EM_H8_300"},

        {47, "EM_H8_300H"},

        {48, "EM_H8S"},

        {49, "EM_H8_500"},

        {50, "EM_IA_64"},

        {51, "EM_MIPS_X"},

        {52, "EM_COLDFIRE"},

        {53, "EM_68HC12"},

        {54, "EM_MMA"},

        {55, "EM_PCP"},

        {56, "EM_NCPU"},

        {57, "EM_NDR1"},

        {58, "EM_STARCORE"},

        {59, "EM_ME16"},

        {60, "EM_ST100"},

        {61, "EM_TINYJ"},

        {62, "EM_X86_64"},

        /* Non-standard or deprecated. */

        {6, "EM_486"},

        {10, "EM_MIPS_RS4_BE"},

        {41, "EM_ALPHA_STD"},

        {0x9026, "EM_ALPHA"},

}

func (i Machine) String() string   { return stringName(uint32(i), machineStrings, false) }

func (i Machine) GoString() string { return stringName(uint32(i), machineStrings, true) }

// Special section indices.

type SectionIndex int

const (

        SHN_UNDEF     SectionIndex = 0      /* Undefined, missing, irrelevant. */

        SHN_LORESERVE SectionIndex = 0xff00 /* First of reserved range. */

        SHN_LOPROC    SectionIndex = 0xff00 /* First processor-specific. */

        SHN_HIPROC    SectionIndex = 0xff1f /* Last processor-specific. */

        SHN_LOOS      SectionIndex = 0xff20 /* First operating system-specific. */

        SHN_HIOS      SectionIndex = 0xff3f /* Last operating system-specific. */

        SHN_ABS       SectionIndex = 0xfff1 /* Absolute values. */

        SHN_COMMON    SectionIndex = 0xfff2 /* Common data. */

        SHN_XINDEX    SectionIndex = 0xffff /* Escape -- index stored elsewhere. */

        SHN_HIRESERVE SectionIndex = 0xffff /* Last of reserved range. */

)

var shnStrings = []intName{

        {0, "SHN_UNDEF"},

        {0xff00, "SHN_LOPROC"},

        {0xff20, "SHN_LOOS"},

        {0xfff1, "SHN_ABS"},

        {0xfff2, "SHN_COMMON"},

        {0xffff, "SHN_XINDEX"},

}

func (i SectionIndex) String() string   { return stringName(uint32(i), shnStrings, false) }

func (i SectionIndex) GoString() string { return stringName(uint32(i), shnStrings, true) }

// Section type.

type SectionType uint32

const (

        SHT_NULL           SectionType = 0          /* inactive */

        SHT_PROGBITS       SectionType = 1          /* program defined information */

        SHT_SYMTAB         SectionType = 2          /* symbol table section */

        SHT_STRTAB         SectionType = 3          /* string table section */

        SHT_RELA           SectionType = 4          /* relocation section with addends */

        SHT_HASH           SectionType = 5          /* symbol hash table section */

        SHT_DYNAMIC        SectionType = 6          /* dynamic section */

        SHT_NOTE           SectionType = 7          /* note section */

        SHT_NOBITS         SectionType = 8          /* no space section */

        SHT_REL            SectionType = 9          /* relocation section - no addends */

        SHT_SHLIB          SectionType = 10         /* reserved - purpose unknown */

        SHT_DYNSYM         SectionType = 11         /* dynamic symbol table section */

        SHT_INIT_ARRAY     SectionType = 14         /* Initialization function pointers. */

        SHT_FINI_ARRAY     SectionType = 15         /* Termination function pointers. */

        SHT_PREINIT_ARRAY  SectionType = 16         /* Pre-initialization function ptrs. */

        SHT_GROUP          SectionType = 17         /* Section group. */

        SHT_SYMTAB_SHNDX   SectionType = 18         /* Section indexes (see SHN_XINDEX). */

        SHT_LOOS           SectionType = 0x60000000 /* First of OS specific semantics */

        SHT_GNU_ATTRIBUTES SectionType = 0x6ffffff5 /* GNU object attributes */

        SHT_GNU_HASH       SectionType = 0x6ffffff6 /* GNU hash table */

        SHT_GNU_LIBLIST    SectionType = 0x6ffffff7 /* GNU prelink library list */

        SHT_GNU_VERDEF     SectionType = 0x6ffffffd /* GNU version definition section */

        SHT_GNU_VERNEED    SectionType = 0x6ffffffe /* GNU version needs section */

        SHT_GNU_VERSYM     SectionType = 0x6fffffff /* GNU version symbol table */

        SHT_HIOS           SectionType = 0x6fffffff /* Last of OS specific semantics */

        SHT_LOPROC         SectionType = 0x70000000 /* reserved range for processor */

        SHT_HIPROC         SectionType = 0x7fffffff /* specific section header types */

        SHT_LOUSER         SectionType = 0x80000000 /* reserved range for application */

        SHT_HIUSER         SectionType = 0xffffffff /* specific indexes */

)

var shtStrings = []intName{

        {0, "SHT_NULL"},

        {1, "SHT_PROGBITS"},

        {2, "SHT_SYMTAB"},

        {3, "SHT_STRTAB"},

        {4, "SHT_RELA"},

        {5, "SHT_HASH"},

        {6, "SHT_DYNAMIC"},

        {7, "SHT_NOTE"},

        {8, "SHT_NOBITS"},

        {9, "SHT_REL"},

        {10, "SHT_SHLIB"},

        {11, "SHT_DYNSYM"},

        {14, "SHT_INIT_ARRAY"},

        {15, "SHT_FINI_ARRAY"},

        {16, "SHT_PREINIT_ARRAY"},

        {17, "SHT_GROUP"},

        {18, "SHT_SYMTAB_SHNDX"},

        {0x60000000, "SHT_LOOS"},

        {0x6ffffff5, "SHT_GNU_ATTRIBUTES"},

        {0x6ffffff6, "SHT_GNU_HASH"},

        {0x6ffffff7, "SHT_GNU_LIBLIST"},

        {0x6ffffffd, "SHT_GNU_VERDEF"},

        {0x6ffffffe, "SHT_GNU_VERNEED"},

        {0x6fffffff, "SHT_GNU_VERSYM"},

        {0x70000000, "SHT_LOPROC"},

        {0x7fffffff, "SHT_HIPROC"},

        {0x80000000, "SHT_LOUSER"},

        {0xffffffff, "SHT_HIUSER"},

}

func (i SectionType) String() string   { return stringName(uint32(i), shtStrings, false) }

func (i SectionType) GoString() string { return stringName(uint32(i), shtStrings, true) }

// Section flags.

type SectionFlag uint32

const (

        SHF_WRITE            SectionFlag = 0x1        /* Section contains writable data. */

        SHF_ALLOC            SectionFlag = 0x2        /* Section occupies memory. */

        SHF_EXECINSTR        SectionFlag = 0x4        /* Section contains instructions. */

        SHF_MERGE            SectionFlag = 0x10       /* Section may be merged. */

        SHF_STRINGS          SectionFlag = 0x20       /* Section contains strings. */

        SHF_INFO_LINK        SectionFlag = 0x40       /* sh_info holds section index. */

        SHF_LINK_ORDER       SectionFlag = 0x80       /* Special ordering requirements. */

        SHF_OS_NONCONFORMING SectionFlag = 0x100      /* OS-specific processing required. */

        SHF_GROUP            SectionFlag = 0x200      /* Member of section group. */

        SHF_TLS              SectionFlag = 0x400      /* Section contains TLS data. */

        SHF_MASKOS           SectionFlag = 0x0ff00000 /* OS-specific semantics. */

        SHF_MASKPROC         SectionFlag = 0xf0000000 /* Processor-specific semantics. */

)

var shfStrings = []intName{

        {0x1, "SHF_WRITE"},

        {0x2, "SHF_ALLOC"},

        {0x4, "SHF_EXECINSTR"},

        {0x10, "SHF_MERGE"},

        {0x20, "SHF_STRINGS"},

        {0x40, "SHF_INFO_LINK"},

        {0x80, "SHF_LINK_ORDER"},

        {0x100, "SHF_OS_NONCONFORMING"},

        {0x200, "SHF_GROUP"},

        {0x400, "SHF_TLS"},

}

func (i SectionFlag) String() string   { return flagName(uint32(i), shfStrings, false) }

func (i SectionFlag) GoString() string { return flagName(uint32(i), shfStrings, true) }

// Prog.Type

type ProgType int

const (

        PT_NULL    ProgType = 0          /* Unused entry. */

        PT_LOAD    ProgType = 1          /* Loadable segment. */

        PT_DYNAMIC ProgType = 2          /* Dynamic linking information segment. */

        PT_INTERP  ProgType = 3          /* Pathname of interpreter. */

        PT_NOTE    ProgType = 4          /* Auxiliary information. */

        PT_SHLIB   ProgType = 5          /* Reserved (not used). */

        PT_PHDR    ProgType = 6          /* Location of program header itself. */

        PT_TLS     ProgType = 7          /* Thread local storage segment */

        PT_LOOS    ProgType = 0x60000000 /* First OS-specific. */

        PT_HIOS    ProgType = 0x6fffffff /* Last OS-specific. */

        PT_LOPROC  ProgType = 0x70000000 /* First processor-specific type. */

        PT_HIPROC  ProgType = 0x7fffffff /* Last processor-specific type. */

)

var ptStrings = []intName{

        {0, "PT_NULL"},

        {1, "PT_LOAD"},

        {2, "PT_DYNAMIC"},

        {3, "PT_INTERP"},

        {4, "PT_NOTE"},

        {5, "PT_SHLIB"},

        {6, "PT_PHDR"},

        {7, "PT_TLS"},

        {0x60000000, "PT_LOOS"},

        {0x6fffffff, "PT_HIOS"},

        {0x70000000, "PT_LOPROC"},

        {0x7fffffff, "PT_HIPROC"},

}

func (i ProgType) String() string   { return stringName(uint32(i), ptStrings, false) }

func (i ProgType) GoString() string { return stringName(uint32(i), ptStrings, true) }

// Prog.Flag

type ProgFlag uint32

const (

        PF_X        ProgFlag = 0x1        /* Executable. */

        PF_W        ProgFlag = 0x2        /* Writable. */

        PF_R        ProgFlag = 0x4        /* Readable. */

        PF_MASKOS   ProgFlag = 0x0ff00000 /* Operating system-specific. */

        PF_MASKPROC ProgFlag = 0xf0000000 /* Processor-specific. */

)

var pfStrings = []intName{

        {0x1, "PF_X"},

        {0x2, "PF_W"},

        {0x4, "PF_R"},

}

func (i ProgFlag) String() string   { return flagName(uint32(i), pfStrings, false) }

func (i ProgFlag) GoString() string { return flagName(uint32(i), pfStrings, true) }

// Dyn.Tag

type DynTag int

const (

        DT_NULL         DynTag = 0  /* Terminating entry. */

        DT_NEEDED       DynTag = 1  /* String table offset of a needed shared library. */

        DT_PLTRELSZ     DynTag = 2  /* Total size in bytes of PLT relocations. */

        DT_PLTGOT       DynTag = 3  /* Processor-dependent address. */

        DT_HASH         DynTag = 4  /* Address of symbol hash table. */

        DT_STRTAB       DynTag = 5  /* Address of string table. */

        DT_SYMTAB       DynTag = 6  /* Address of symbol table. */

        DT_RELA         DynTag = 7  /* Address of ElfNN_Rela relocations. */

        DT_RELASZ       DynTag = 8  /* Total size of ElfNN_Rela relocations. */

        DT_RELAENT      DynTag = 9  /* Size of each ElfNN_Rela relocation entry. */

        DT_STRSZ        DynTag = 10 /* Size of string table. */

        DT_SYMENT       DynTag = 11 /* Size of each symbol table entry. */

        DT_INIT         DynTag = 12 /* Address of initialization function. */

        DT_FINI         DynTag = 13 /* Address of finalization function. */

        DT_SONAME       DynTag = 14 /* String table offset of shared object name. */

        DT_RPATH        DynTag = 15 /* String table offset of library path. [sup] */

        DT_SYMBOLIC     DynTag = 16 /* Indicates "symbolic" linking. [sup] */

        DT_REL          DynTag = 17 /* Address of ElfNN_Rel relocations. */

        DT_RELSZ        DynTag = 18 /* Total size of ElfNN_Rel relocations. */

        DT_RELENT       DynTag = 19 /* Size of each ElfNN_Rel relocation. */

        DT_PLTREL       DynTag = 20 /* Type of relocation used for PLT. */

        DT_DEBUG        DynTag = 21 /* Reserved (not used). */

        DT_TEXTREL      DynTag = 22 /* Indicates there may be relocations in non-writable segments. [sup] */

        DT_JMPREL       DynTag = 23 /* Address of PLT relocations. */

        DT_BIND_NOW     DynTag = 24 /* [sup] */

        DT_INIT_ARRAY   DynTag = 25 /* Address of the array of pointers to initialization functions */

        DT_FINI_ARRAY   DynTag = 26 /* Address of the array of pointers to termination functions */

        DT_INIT_ARRAYSZ DynTag = 27 /* Size in bytes of the array of initialization functions. */

        DT_FINI_ARRAYSZ DynTag = 28 /* Size in bytes of the array of terminationfunctions. */

        DT_RUNPATH      DynTag = 29 /* String table offset of a null-terminated library search path string. */

        DT_FLAGS        DynTag = 30 /* Object specific flag values. */

        DT_ENCODING     DynTag = 32 /* Values greater than or equal to DT_ENCODING

           and less than DT_LOOS follow the rules for

           the interpretation of the d_un union

           as follows: even == 'd_ptr', even == 'd_val'

           or none */

        DT_PREINIT_ARRAY   DynTag = 32         /* Address of the array of pointers to pre-initialization functions. */

        DT_PREINIT_ARRAYSZ DynTag = 33         /* Size in bytes of the array of pre-initialization functions. */

        DT_LOOS            DynTag = 0x6000000d /* First OS-specific */

        DT_HIOS            DynTag = 0x6ffff000 /* Last OS-specific */

        DT_VERSYM          DynTag = 0x6ffffff0

        DT_VERNEED         DynTag = 0x6ffffffe

        DT_VERNEEDNUM      DynTag = 0x6fffffff

        DT_LOPROC          DynTag = 0x70000000 /* First processor-specific type. */

        DT_HIPROC          DynTag = 0x7fffffff /* Last processor-specific type. */

)

var dtStrings = []intName{

        {0, "DT_NULL"},

        {1, "DT_NEEDED"},

        {2, "DT_PLTRELSZ"},

        {3, "DT_PLTGOT"},

        {4, "DT_HASH"},

        {5, "DT_STRTAB"},

        {6, "DT_SYMTAB"},

        {7, "DT_RELA"},

        {8, "DT_RELASZ"},

        {9, "DT_RELAENT"},

        {10, "DT_STRSZ"},

        {11, "DT_SYMENT"},

        {12, "DT_INIT"},

        {13, "DT_FINI"},

        {14, "DT_SONAME"},

        {15, "DT_RPATH"},

        {16, "DT_SYMBOLIC"},

        {17, "DT_REL"},

        {18, "DT_RELSZ"},

        {19, "DT_RELENT"},

        {20, "DT_PLTREL"},

        {21, "DT_DEBUG"},

        {22, "DT_TEXTREL"},

        {23, "DT_JMPREL"},

        {24, "DT_BIND_NOW"},

        {25, "DT_INIT_ARRAY"},

        {26, "DT_FINI_ARRAY"},

        {27, "DT_INIT_ARRAYSZ"},

        {28, "DT_FINI_ARRAYSZ"},

        {29, "DT_RUNPATH"},

        {30, "DT_FLAGS"},

        {32, "DT_ENCODING"},

        {32, "DT_PREINIT_ARRAY"},

        {33, "DT_PREINIT_ARRAYSZ"},

        {0x6000000d, "DT_LOOS"},

        {0x6ffff000, "DT_HIOS"},

        {0x6ffffff0, "DT_VERSYM"},

        {0x6ffffffe, "DT_VERNEED"},

        {0x6fffffff, "DT_VERNEEDNUM"},

        {0x70000000, "DT_LOPROC"},

        {0x7fffffff, "DT_HIPROC"},

}

func (i DynTag) String() string   { return stringName(uint32(i), dtStrings, false) }

func (i DynTag) GoString() string { return stringName(uint32(i), dtStrings, true) }

// DT_FLAGS values.

type DynFlag int

const (

        DF_ORIGIN DynFlag = 0x0001 /* Indicates that the object being loaded may

           make reference to the

           $ORIGIN substitution string */

        DF_SYMBOLIC DynFlag = 0x0002 /* Indicates "symbolic" linking. */

        DF_TEXTREL  DynFlag = 0x0004 /* Indicates there may be relocations in non-writable segments. */

        DF_BIND_NOW DynFlag = 0x0008 /* Indicates that the dynamic linker should

           process all relocations for the object

           containing this entry before transferring

           control to the program. */

        DF_STATIC_TLS DynFlag = 0x0010 /* Indicates that the shared object or

           executable contains code using a static

           thread-local storage scheme. */

)

var dflagStrings = []intName{

        {0x0001, "DF_ORIGIN"},

        {0x0002, "DF_SYMBOLIC"},

        {0x0004, "DF_TEXTREL"},

        {0x0008, "DF_BIND_NOW"},

        {0x0010, "DF_STATIC_TLS"},

}

func (i DynFlag) String() string   { return flagName(uint32(i), dflagStrings, false) }

func (i DynFlag) GoString() string { return flagName(uint32(i), dflagStrings, true) }

// NType values; used in core files.

type NType int

const (

        NT_PRSTATUS NType = 1 /* Process status. */

        NT_FPREGSET NType = 2 /* Floating point registers. */

        NT_PRPSINFO NType = 3 /* Process state info. */

)

var ntypeStrings = []intName{

        {1, "NT_PRSTATUS"},

        {2, "NT_FPREGSET"},

        {3, "NT_PRPSINFO"},

}

func (i NType) String() string   { return stringName(uint32(i), ntypeStrings, false) }

func (i NType) GoString() string { return stringName(uint32(i), ntypeStrings, true) }

/* Symbol Binding - ELFNN_ST_BIND - st_info */

type SymBind int

const (

        STB_LOCAL  SymBind = 0  /* Local symbol */

        STB_GLOBAL SymBind = 1  /* Global symbol */

        STB_WEAK   SymBind = 2  /* like global - lower precedence */

        STB_LOOS   SymBind = 10 /* Reserved range for operating system */

        STB_HIOS   SymBind = 12 /*   specific semantics. */

        STB_LOPROC SymBind = 13 /* reserved range for processor */

        STB_HIPROC SymBind = 15 /*   specific semantics. */

)

var stbStrings = []intName{

        {0, "STB_LOCAL"},

        {1, "STB_GLOBAL"},

        {2, "STB_WEAK"},

        {10, "STB_LOOS"},

        {12, "STB_HIOS"},

        {13, "STB_LOPROC"},

        {15, "STB_HIPROC"},

}

func (i SymBind) String() string   { return stringName(uint32(i), stbStrings, false) }

func (i SymBind) GoString() string { return stringName(uint32(i), stbStrings, true) }

/* Symbol type - ELFNN_ST_TYPE - st_info */

type SymType int

const (

        STT_NOTYPE  SymType = 0  /* Unspecified type. */

        STT_OBJECT  SymType = 1  /* Data object. */

        STT_FUNC    SymType = 2  /* Function. */

        STT_SECTION SymType = 3  /* Section. */

        STT_FILE    SymType = 4  /* Source file. */

        STT_COMMON  SymType = 5  /* Uninitialized common block. */

        STT_TLS     SymType = 6  /* TLS object. */

        STT_LOOS    SymType = 10 /* Reserved range for operating system */

        STT_HIOS    SymType = 12 /*   specific semantics. */

        STT_LOPROC  SymType = 13 /* reserved range for processor */

        STT_HIPROC  SymType = 15 /*   specific semantics. */

)

var sttStrings = []intName{

        {0, "STT_NOTYPE"},

        {1, "STT_OBJECT"},

        {2, "STT_FUNC"},

        {3, "STT_SECTION"},

        {4, "STT_FILE"},

        {5, "STT_COMMON"},

        {6, "STT_TLS"},

        {10, "STT_LOOS"},

        {12, "STT_HIOS"},

        {13, "STT_LOPROC"},

        {15, "STT_HIPROC"},

}

func (i SymType) String() string   { return stringName(uint32(i), sttStrings, false) }

func (i SymType) GoString() string { return stringName(uint32(i), sttStrings, true) }

/* Symbol visibility - ELFNN_ST_VISIBILITY - st_other */

type SymVis int

const (

        STV_DEFAULT   SymVis = 0x0 /* Default visibility (see binding). */

        STV_INTERNAL  SymVis = 0x1 /* Special meaning in relocatable objects. */

        STV_HIDDEN    SymVis = 0x2 /* Not visible. */

        STV_PROTECTED SymVis = 0x3 /* Visible but not preemptible. */

)

var stvStrings = []intName{

        {0x0, "STV_DEFAULT"},

        {0x1, "STV_INTERNAL"},

        {0x2, "STV_HIDDEN"},

        {0x3, "STV_PROTECTED"},

}

func (i SymVis) String() string   { return stringName(uint32(i), stvStrings, false) }

func (i SymVis) GoString() string { return stringName(uint32(i), stvStrings, true) }

/*

 * Relocation types.

 */

// Relocation types for x86-64.

type R_X86_64 int

const (

        R_X86_64_NONE     R_X86_64 = 0  /* No relocation. */

        R_X86_64_64       R_X86_64 = 1  /* Add 64 bit symbol value. */

        R_X86_64_PC32     R_X86_64 = 2  /* PC-relative 32 bit signed sym value. */

        R_X86_64_GOT32    R_X86_64 = 3  /* PC-relative 32 bit GOT offset. */

        R_X86_64_PLT32    R_X86_64 = 4  /* PC-relative 32 bit PLT offset. */

        R_X86_64_COPY     R_X86_64 = 5  /* Copy data from shared object. */

        R_X86_64_GLOB_DAT R_X86_64 = 6  /* Set GOT entry to data address. */

        R_X86_64_JMP_SLOT R_X86_64 = 7  /* Set GOT entry to code address. */

        R_X86_64_RELATIVE R_X86_64 = 8  /* Add load address of shared object. */

        R_X86_64_GOTPCREL R_X86_64 = 9  /* Add 32 bit signed pcrel offset to GOT. */

        R_X86_64_32       R_X86_64 = 10 /* Add 32 bit zero extended symbol value */

        R_X86_64_32S      R_X86_64 = 11 /* Add 32 bit sign extended symbol value */

        R_X86_64_16       R_X86_64 = 12 /* Add 16 bit zero extended symbol value */

        R_X86_64_PC16     R_X86_64 = 13 /* Add 16 bit signed extended pc relative symbol value */

        R_X86_64_8        R_X86_64 = 14 /* Add 8 bit zero extended symbol value */

        R_X86_64_PC8      R_X86_64 = 15 /* Add 8 bit signed extended pc relative symbol value */

        R_X86_64_DTPMOD64 R_X86_64 = 16 /* ID of module containing symbol */

        R_X86_64_DTPOFF64 R_X86_64 = 17 /* Offset in TLS block */

        R_X86_64_TPOFF64  R_X86_64 = 18 /* Offset in static TLS block */

        R_X86_64_TLSGD    R_X86_64 = 19 /* PC relative offset to GD GOT entry */

        R_X86_64_TLSLD    R_X86_64 = 20 /* PC relative offset to LD GOT entry */

        R_X86_64_DTPOFF32 R_X86_64 = 21 /* Offset in TLS block */

        R_X86_64_GOTTPOFF R_X86_64 = 22 /* PC relative offset to IE GOT entry */

        R_X86_64_TPOFF32  R_X86_64 = 23 /* Offset in static TLS block */

)

var rx86_64Strings = []intName{

        {0, "R_X86_64_NONE"},

        {1, "R_X86_64_64"},

        {2, "R_X86_64_PC32"},

        {3, "R_X86_64_GOT32"},

        {4, "R_X86_64_PLT32"},

        {5, "R_X86_64_COPY"},

        {6, "R_X86_64_GLOB_DAT"},

        {7, "R_X86_64_JMP_SLOT"},

        {8, "R_X86_64_RELATIVE"},

        {9, "R_X86_64_GOTPCREL"},

        {10, "R_X86_64_32"},

        {11, "R_X86_64_32S"},

        {12, "R_X86_64_16"},

        {13, "R_X86_64_PC16"},

        {14, "R_X86_64_8"},

        {15, "R_X86_64_PC8"},

        {16, "R_X86_64_DTPMOD64"},

        {17, "R_X86_64_DTPOFF64"},

        {18, "R_X86_64_TPOFF64"},

        {19, "R_X86_64_TLSGD"},

        {20, "R_X86_64_TLSLD"},

        {21, "R_X86_64_DTPOFF32"},

        {22, "R_X86_64_GOTTPOFF"},

        {23, "R_X86_64_TPOFF32"},

}

func (i R_X86_64) String() string   { return stringName(uint32(i), rx86_64Strings, false) }

func (i R_X86_64) GoString() string { return stringName(uint32(i), rx86_64Strings, true) }

// Relocation types for Alpha.

type R_ALPHA int

const (

        R_ALPHA_NONE           R_ALPHA = 0  /* No reloc */

        R_ALPHA_REFLONG        R_ALPHA = 1  /* Direct 32 bit */

        R_ALPHA_REFQUAD        R_ALPHA = 2  /* Direct 64 bit */

        R_ALPHA_GPREL32        R_ALPHA = 3  /* GP relative 32 bit */

        R_ALPHA_LITERAL        R_ALPHA = 4  /* GP relative 16 bit w/optimization */

        R_ALPHA_LITUSE         R_ALPHA = 5  /* Optimization hint for LITERAL */

        R_ALPHA_GPDISP         R_ALPHA = 6  /* Add displacement to GP */

        R_ALPHA_BRADDR         R_ALPHA = 7  /* PC+4 relative 23 bit shifted */

        R_ALPHA_HINT           R_ALPHA = 8  /* PC+4 relative 16 bit shifted */

        R_ALPHA_SREL16         R_ALPHA = 9  /* PC relative 16 bit */

        R_ALPHA_SREL32         R_ALPHA = 10 /* PC relative 32 bit */

        R_ALPHA_SREL64         R_ALPHA = 11 /* PC relative 64 bit */

        R_ALPHA_OP_PUSH        R_ALPHA = 12 /* OP stack push */

        R_ALPHA_OP_STORE       R_ALPHA = 13 /* OP stack pop and store */

        R_ALPHA_OP_PSUB        R_ALPHA = 14 /* OP stack subtract */

        R_ALPHA_OP_PRSHIFT     R_ALPHA = 15 /* OP stack right shift */

        R_ALPHA_GPVALUE        R_ALPHA = 16

        R_ALPHA_GPRELHIGH      R_ALPHA = 17

        R_ALPHA_GPRELLOW       R_ALPHA = 18

        R_ALPHA_IMMED_GP_16    R_ALPHA = 19

        R_ALPHA_IMMED_GP_HI32  R_ALPHA = 20

        R_ALPHA_IMMED_SCN_HI32 R_ALPHA = 21

        R_ALPHA_IMMED_BR_HI32  R_ALPHA = 22

        R_ALPHA_IMMED_LO32     R_ALPHA = 23

        R_ALPHA_COPY           R_ALPHA = 24 /* Copy symbol at runtime */

        R_ALPHA_GLOB_DAT       R_ALPHA = 25 /* Create GOT entry */

        R_ALPHA_JMP_SLOT       R_ALPHA = 26 /* Create PLT entry */

        R_ALPHA_RELATIVE       R_ALPHA = 27 /* Adjust by program base */

)

var ralphaStrings = []intName{

        {0, "R_ALPHA_NONE"},

        {1, "R_ALPHA_REFLONG"},

        {2, "R_ALPHA_REFQUAD"},

        {3, "R_ALPHA_GPREL32"},

        {4, "R_ALPHA_LITERAL"},

        {5, "R_ALPHA_LITUSE"},

        {6, "R_ALPHA_GPDISP"},

        {7, "R_ALPHA_BRADDR"},

        {8, "R_ALPHA_HINT"},

        {9, "R_ALPHA_SREL16"},

        {10, "R_ALPHA_SREL32"},

        {11, "R_ALPHA_SREL64"},

        {12, "R_ALPHA_OP_PUSH"},

        {13, "R_ALPHA_OP_STORE"},

        {14, "R_ALPHA_OP_PSUB"},

        {15, "R_ALPHA_OP_PRSHIFT"},

        {16, "R_ALPHA_GPVALUE"},

        {17, "R_ALPHA_GPRELHIGH"},

        {18, "R_ALPHA_GPRELLOW"},

        {19, "R_ALPHA_IMMED_GP_16"},

        {20, "R_ALPHA_IMMED_GP_HI32"},

        {21, "R_ALPHA_IMMED_SCN_HI32"},

        {22, "R_ALPHA_IMMED_BR_HI32"},

        {23, "R_ALPHA_IMMED_LO32"},

        {24, "R_ALPHA_COPY"},

        {25, "R_ALPHA_GLOB_DAT"},

        {26, "R_ALPHA_JMP_SLOT"},

        {27, "R_ALPHA_RELATIVE"},

}

func (i R_ALPHA) String() string   { return stringName(uint32(i), ralphaStrings, false) }

func (i R_ALPHA) GoString() string { return stringName(uint32(i), ralphaStrings, true) }

// Relocation types for ARM.

type R_ARM int

const (

        R_ARM_NONE          R_ARM = 0 /* No relocation. */

        R_ARM_PC24          R_ARM = 1

        R_ARM_ABS32         R_ARM = 2

        R_ARM_REL32         R_ARM = 3

        R_ARM_PC13          R_ARM = 4

        R_ARM_ABS16         R_ARM = 5

        R_ARM_ABS12         R_ARM = 6

        R_ARM_THM_ABS5      R_ARM = 7

        R_ARM_ABS8          R_ARM = 8

        R_ARM_SBREL32       R_ARM = 9

        R_ARM_THM_PC22      R_ARM = 10

        R_ARM_THM_PC8       R_ARM = 11

        R_ARM_AMP_VCALL9    R_ARM = 12

        R_ARM_SWI24         R_ARM = 13

        R_ARM_THM_SWI8      R_ARM = 14

        R_ARM_XPC25         R_ARM = 15

        R_ARM_THM_XPC22     R_ARM = 16

        R_ARM_COPY          R_ARM = 20 /* Copy data from shared object. */

        R_ARM_GLOB_DAT      R_ARM = 21 /* Set GOT entry to data address. */

        R_ARM_JUMP_SLOT     R_ARM = 22 /* Set GOT entry to code address. */

        R_ARM_RELATIVE      R_ARM = 23 /* Add load address of shared object. */

        R_ARM_GOTOFF        R_ARM = 24 /* Add GOT-relative symbol address. */

        R_ARM_GOTPC         R_ARM = 25 /* Add PC-relative GOT table address. */

        R_ARM_GOT32         R_ARM = 26 /* Add PC-relative GOT offset. */

        R_ARM_PLT32         R_ARM = 27 /* Add PC-relative PLT offset. */

        R_ARM_GNU_VTENTRY   R_ARM = 100

        R_ARM_GNU_VTINHERIT R_ARM = 101

        R_ARM_RSBREL32      R_ARM = 250

        R_ARM_THM_RPC22     R_ARM = 251

        R_ARM_RREL32        R_ARM = 252

        R_ARM_RABS32        R_ARM = 253

        R_ARM_RPC24         R_ARM = 254

        R_ARM_RBASE         R_ARM = 255

)

var rarmStrings = []intName{

        {0, "R_ARM_NONE"},

        {1, "R_ARM_PC24"},

        {2, "R_ARM_ABS32"},

        {3, "R_ARM_REL32"},

        {4, "R_ARM_PC13"},

        {5, "R_ARM_ABS16"},

        {6, "R_ARM_ABS12"},

        {7, "R_ARM_THM_ABS5"},

        {8, "R_ARM_ABS8"},

        {9, "R_ARM_SBREL32"},

        {10, "R_ARM_THM_PC22"},

        {11, "R_ARM_THM_PC8"},

        {12, "R_ARM_AMP_VCALL9"},

        {13, "R_ARM_SWI24"},

        {14, "R_ARM_THM_SWI8"},

        {15, "R_ARM_XPC25"},

        {16, "R_ARM_THM_XPC22"},

        {20, "R_ARM_COPY"},

        {21, "R_ARM_GLOB_DAT"},

        {22, "R_ARM_JUMP_SLOT"},

        {23, "R_ARM_RELATIVE"},

        {24, "R_ARM_GOTOFF"},

        {25, "R_ARM_GOTPC"},

        {26, "R_ARM_GOT32"},

        {27, "R_ARM_PLT32"},

        {100, "R_ARM_GNU_VTENTRY"},

        {101, "R_ARM_GNU_VTINHERIT"},

        {250, "R_ARM_RSBREL32"},

        {251, "R_ARM_THM_RPC22"},

        {252, "R_ARM_RREL32"},

        {253, "R_ARM_RABS32"},

        {254, "R_ARM_RPC24"},

        {255, "R_ARM_RBASE"},

}

func (i R_ARM) String() string   { return stringName(uint32(i), rarmStrings, false) }

func (i R_ARM) GoString() string { return stringName(uint32(i), rarmStrings, true) }

// Relocation types for 386.

type R_386 int

const (

        R_386_NONE         R_386 = 0  /* No relocation. */

        R_386_32           R_386 = 1  /* Add symbol value. */

        R_386_PC32         R_386 = 2  /* Add PC-relative symbol value. */

        R_386_GOT32        R_386 = 3  /* Add PC-relative GOT offset. */

        R_386_PLT32        R_386 = 4  /* Add PC-relative PLT offset. */

        R_386_COPY         R_386 = 5  /* Copy data from shared object. */

        R_386_GLOB_DAT     R_386 = 6  /* Set GOT entry to data address. */

        R_386_JMP_SLOT     R_386 = 7  /* Set GOT entry to code address. */

        R_386_RELATIVE     R_386 = 8  /* Add load address of shared object. */

        R_386_GOTOFF       R_386 = 9  /* Add GOT-relative symbol address. */

        R_386_GOTPC        R_386 = 10 /* Add PC-relative GOT table address. */

        R_386_TLS_TPOFF    R_386 = 14 /* Negative offset in static TLS block */

        R_386_TLS_IE       R_386 = 15 /* Absolute address of GOT for -ve static TLS */