root/trunk/freewrt/scripts/elf.h

/* This file defines standard ELF types, structures, and macros.
   Copyright (C) 1995-2003, 2004 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifndef _ELF_H
#define _ELF_H 1

#include <sys/param.h>
#if !defined(BSD) && !defined(__APPLE__)
#include <features.h>
#endif

__BEGIN_DECLS

/* Standard ELF types.  */

#include <stdint.h>

/* Type for a 16-bit quantity.  */
typedef uint16_t Elf32_Half;
typedef uint16_t Elf64_Half;

/* Types for signed and unsigned 32-bit quantities.  */
typedef uint32_t Elf32_Word;
typedef int32_t  Elf32_Sword;
typedef uint32_t Elf64_Word;
typedef int32_t  Elf64_Sword;

/* Types for signed and unsigned 64-bit quantities.  */
typedef uint64_t Elf32_Xword;
typedef int64_t  Elf32_Sxword;
typedef uint64_t Elf64_Xword;
typedef int64_t  Elf64_Sxword;

/* Type of addresses.  */
typedef uint32_t Elf32_Addr;
typedef uint64_t Elf64_Addr;

/* Type of file offsets.  */
typedef uint32_t Elf32_Off;
typedef uint64_t Elf64_Off;

/* Type for section indices, which are 16-bit quantities.  */
typedef uint16_t Elf32_Section;
typedef uint16_t Elf64_Section;

/* Type for version symbol information.  */
typedef Elf32_Half Elf32_Versym;
typedef Elf64_Half Elf64_Versym;


/* The ELF file header.  This appears at the start of every ELF file.  */

#define EI_NIDENT (16)

typedef struct
{
  unsigned char e_ident[EI_NIDENT];     /* Magic number and other info */
  Elf32_Half    e_type;                 /* Object file type */
  Elf32_Half    e_machine;              /* Architecture */
  Elf32_Word    e_version;              /* Object file version */
  Elf32_Addr    e_entry;                /* Entry point virtual address */
  Elf32_Off     e_phoff;                /* Program header table file offset */
  Elf32_Off     e_shoff;                /* Section header table file offset */
  Elf32_Word    e_flags;                /* Processor-specific flags */
  Elf32_Half    e_ehsize;               /* ELF header size in bytes */
  Elf32_Half    e_phentsize;            /* Program header table entry size */
  Elf32_Half    e_phnum;                /* Program header table entry count */
  Elf32_Half    e_shentsize;            /* Section header table entry size */
  Elf32_Half    e_shnum;                /* Section header table entry count */
  Elf32_Half    e_shstrndx;             /* Section header string table index */
} Elf32_Ehdr;

typedef struct
{
  unsigned char e_ident[EI_NIDENT];     /* Magic number and other info */
  Elf64_Half    e_type;                 /* Object file type */
  Elf64_Half    e_machine;              /* Architecture */
  Elf64_Word    e_version;              /* Object file version */
  Elf64_Addr    e_entry;                /* Entry point virtual address */
  Elf64_Off     e_phoff;                /* Program header table file offset */
  Elf64_Off     e_shoff;                /* Section header table file offset */
  Elf64_Word    e_flags;                /* Processor-specific flags */
  Elf64_Half    e_ehsize;               /* ELF header size in bytes */
  Elf64_Half    e_phentsize;            /* Program header table entry size */
  Elf64_Half    e_phnum;                /* Program header table entry count */
  Elf64_Half    e_shentsize;            /* Section header table entry size */
  Elf64_Half    e_shnum;                /* Section header table entry count */
  Elf64_Half    e_shstrndx;             /* Section header string table index */
} Elf64_Ehdr;

/* Fields in the e_ident array.  The EI_* macros are indices into the
   array.  The macros under each EI_* macro are the values the byte
   may have.  */

#define EI_MAG0         0               /* File identification byte 0 index */
#define ELFMAG0         0x7f            /* Magic number byte 0 */

#define EI_MAG1         1               /* File identification byte 1 index */
#define ELFMAG1         'E'             /* Magic number byte 1 */

#define EI_MAG2         2               /* File identification byte 2 index */
#define ELFMAG2         'L'             /* Magic number byte 2 */

#define EI_MAG3         3               /* File identification byte 3 index */
#define ELFMAG3         'F'             /* Magic number byte 3 */

/* Conglomeration of the identification bytes, for easy testing as a word.  */
#define ELFMAG          "\177ELF"
#define SELFMAG         4

#define EI_CLASS        4               /* File class byte index */
#define ELFCLASSNONE    0               /* Invalid class */
#define ELFCLASS32      1               /* 32-bit objects */
#define ELFCLASS64      2               /* 64-bit objects */
#define ELFCLASSNUM     3

#define EI_DATA         5               /* Data encoding byte index */
#define ELFDATANONE     0               /* Invalid data encoding */
#define ELFDATA2LSB     1               /* 2's complement, little endian */
#define ELFDATA2MSB     2               /* 2's complement, big endian */
#define ELFDATANUM      3

#define EI_VERSION      6               /* File version byte index */
                                        /* Value must be EV_CURRENT */

#define EI_OSABI        7               /* OS ABI identification */
#define ELFOSABI_NONE           0       /* UNIX System V ABI */
#define ELFOSABI_SYSV           0       /* Alias.  */
#define ELFOSABI_HPUX           1       /* HP-UX */
#define ELFOSABI_NETBSD         2       /* NetBSD.  */
#define ELFOSABI_LINUX          3       /* Linux.  */
#define ELFOSABI_SOLARIS        6       /* Sun Solaris.  */
#define ELFOSABI_AIX            7       /* IBM AIX.  */
#define ELFOSABI_IRIX           8       /* SGI Irix.  */
#define ELFOSABI_FREEBSD        9       /* FreeBSD.  */
#define ELFOSABI_TRU64          10      /* Compaq 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 */

#define EI_ABIVERSION   8               /* ABI version */

#define EI_PAD          9               /* Byte index of padding bytes */

/* Legal values for e_type (object file 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 defined types */
#define ET_LOOS         0xfe00          /* OS-specific range start */
#define ET_HIOS         0xfeff          /* OS-specific range end */
#define ET_LOPROC       0xff00          /* Processor-specific range start */
#define ET_HIPROC       0xffff          /* Processor-specific range end */

/* Legal values for e_machine (architecture).  */

#define EM_NONE          0              /* No machine */
#define EM_M32           1              /* AT&T WE 32100 */
#define EM_SPARC         2              /* SUN SPARC */
#define EM_386           3              /* Intel 80386 */
#define EM_68K           4              /* Motorola m68k family */
#define EM_88K           5              /* Motorola m88k family */
#define EM_860           7              /* Intel 80860 */
#define EM_MIPS          8              /* MIPS R3000 big-endian */
#define EM_S370          9              /* IBM System/370 */
#define EM_MIPS_RS3_LE  10              /* MIPS R3000 little-endian */

#define EM_PARISC       15              /* HPPA */
#define EM_VPP500       17              /* Fujitsu VPP500 */
#define EM_SPARC32PLUS  18              /* Sun's "v8plus" */
#define EM_960          19              /* Intel 80960 */
#define EM_PPC          20              /* PowerPC */
#define EM_PPC64        21              /* PowerPC 64-bit */
#define EM_S390         22              /* IBM S390 */

#define EM_V800         36              /* NEC V800 series */
#define EM_FR20         37              /* Fujitsu FR20 */
#define EM_RH32         38              /* TRW RH-32 */
#define EM_RCE          39              /* Motorola RCE */
#define EM_ARM          40              /* ARM */
#define EM_FAKE_ALPHA   41              /* Digital Alpha */
#define EM_SH           42              /* Hitachi SH */
#define EM_SPARCV9      43              /* SPARC v9 64-bit */
#define EM_TRICORE      44              /* Siemens Tricore */
#define EM_ARC          45              /* Argonaut RISC Core */
#define EM_H8_300       46              /* Hitachi H8/300 */
#define EM_H8_300H      47              /* Hitachi H8/300H */
#define EM_H8S          48              /* Hitachi H8S */
#define EM_H8_500       49              /* Hitachi H8/500 */
#define EM_IA_64        50              /* Intel Merced */
#define EM_MIPS_X       51              /* Stanford MIPS-X */
#define EM_COLDFIRE     52              /* Motorola Coldfire */
#define EM_68HC12       53              /* Motorola M68HC12 */
#define EM_MMA          54              /* Fujitsu MMA Multimedia Accelerator*/
#define EM_PCP          55              /* Siemens PCP */
#define EM_NCPU         56              /* Sony nCPU embeeded RISC */
#define EM_NDR1         57              /* Denso NDR1 microprocessor */
#define EM_STARCORE     58              /* Motorola Start*Core processor */
#define EM_ME16         59              /* Toyota ME16 processor */
#define EM_ST100        60              /* STMicroelectronic ST100 processor */
#define EM_TINYJ        61              /* Advanced Logic Corp. Tinyj emb.fam*/
#define EM_X86_64       62              /* AMD x86-64 architecture */
#define EM_PDSP         63              /* Sony DSP Processor */

#define EM_FX66         66              /* Siemens FX66 microcontroller */
#define EM_ST9PLUS      67              /* STMicroelectronics ST9+ 8/16 mc */
#define EM_ST7          68              /* STmicroelectronics ST7 8 bit mc */
#define EM_68HC16       69              /* Motorola MC68HC16 microcontroller */
#define EM_68HC11       70              /* Motorola MC68HC11 microcontroller */
#define EM_68HC08       71              /* Motorola MC68HC08 microcontroller */
#define EM_68HC05       72              /* Motorola MC68HC05 microcontroller */
#define EM_SVX          73              /* Silicon Graphics SVx */
#define EM_ST19         74              /* STMicroelectronics ST19 8 bit mc */
#define EM_VAX          75              /* Digital VAX */
#define EM_CRIS         76              /* Axis Communications 32-bit embedded processor */
#define EM_JAVELIN      77              /* Infineon Technologies 32-bit embedded processor */
#define EM_FIREPATH     78              /* Element 14 64-bit DSP Processor */
#define EM_ZSP          79              /* LSI Logic 16-bit DSP Processor */
#define EM_MMIX         80              /* Donald Knuth's educational 64-bit processor */
#define EM_HUANY        81              /* Harvard University machine-independent object files */
#define EM_PRISM        82              /* SiTera Prism */
#define EM_AVR          83              /* Atmel AVR 8-bit microcontroller */
#define EM_FR30         84              /* Fujitsu FR30 */
#define EM_D10V         85              /* Mitsubishi D10V */
#define EM_D30V         86              /* Mitsubishi D30V */
#define EM_V850         87              /* NEC v850 */
#define EM_M32R         88              /* Mitsubishi M32R */
#define EM_MN10300      89              /* Matsushita MN10300 */
#define EM_MN10200      90              /* Matsushita MN10200 */
#define EM_PJ           91              /* picoJava */
#define EM_OPENRISC     92              /* OpenRISC 32-bit embedded processor */
#define EM_ARC_A5       93              /* ARC Cores Tangent-A5 */
#define EM_XTENSA       94              /* Tensilica Xtensa Architecture */
#define EM_NUM          95

/* If it is necessary to assign new unofficial EM_* values, please
   pick large random numbers (0x8523, 0xa7f2, etc.) to minimize the
   chances of collision with official or non-GNU unofficial values.  */

#define EM_ALPHA        0x9026

/* Legal values for e_version (version).  */

#define EV_NONE         0               /* Invalid ELF version */
#define EV_CURRENT      1               /* Current version */
#define EV_NUM          2

/* Section header.  */

typedef struct
{
  Elf32_Word    sh_name;                /* Section name (string tbl index) */
  Elf32_Word    sh_type;                /* Section type */
  Elf32_Word    sh_flags;               /* Section flags */
  Elf32_Addr    sh_addr;                /* Section virtual addr at execution */
  Elf32_Off     sh_offset;              /* Section file offset */
  Elf32_Word    sh_size;                /* Section size in bytes */
  Elf32_Word    sh_link;                /* Link to another section */
  Elf32_Word    sh_info;                /* Additional section information */
  Elf32_Word    sh_addralign;           /* Section alignment */
  Elf32_Word    sh_entsize;             /* Entry size if section holds table */
} Elf32_Shdr;

typedef struct
{
  Elf64_Word    sh_name;                /* Section name (string tbl index) */
  Elf64_Word    sh_type;                /* Section type */
  Elf64_Xword   sh_flags;               /* Section flags */
  Elf64_Addr    sh_addr;                /* Section virtual addr at execution */
  Elf64_Off     sh_offset;              /* Section file offset */
  Elf64_Xword   sh_size;                /* Section size in bytes */
  Elf64_Word    sh_link;                /* Link to another section */
  Elf64_Word    sh_info;                /* Additional section information */
  Elf64_Xword   sh_addralign;           /* Section alignment */
  Elf64_Xword   sh_entsize;             /* Entry size if section holds table */
} Elf64_Shdr;

/* Special section indices.  */

#define SHN_UNDEF       0               /* Undefined section */
#define SHN_LORESERVE   0xff00          /* Start of reserved indices */
#define SHN_LOPROC      0xff00          /* Start of processor-specific */
#define SHN_BEFORE      0xff00          /* Order section before all others
                                           (Solaris).  */
#define SHN_AFTER       0xff01          /* Order section after all others
                                           (Solaris).  */
#define SHN_HIPROC      0xff1f          /* End of processor-specific */
#define SHN_LOOS        0xff20          /* Start of OS-specific */
#define SHN_HIOS        0xff3f          /* End of OS-specific */
#define SHN_ABS         0xfff1          /* Associated symbol is absolute */
#define SHN_COMMON      0xfff2          /* Associated symbol is common */
#define SHN_XINDEX      0xffff          /* Index is in extra table.  */
#define SHN_HIRESERVE   0xffff          /* End of reserved indices */

/* Legal values for sh_type (section type).  */

#define SHT_NULL          0             /* Section header table entry unused */
#define SHT_PROGBITS      1             /* Program data */
#define SHT_SYMTAB        2             /* Symbol table */
#define SHT_STRTAB        3             /* String table */
#define SHT_RELA          4             /* Relocation entries with addends */
#define SHT_HASH          5             /* Symbol hash table */
#define SHT_DYNAMIC       6             /* Dynamic linking information */
#define SHT_NOTE          7             /* Notes */
#define SHT_NOBITS        8             /* Program space with no data (bss) */
#define SHT_REL           9             /* Relocation entries, no addends */
#define SHT_SHLIB         10            /* Reserved */
#define SHT_DYNSYM        11            /* Dynamic linker symbol table */
#define SHT_INIT_ARRAY    14            /* Array of constructors */
#define SHT_FINI_ARRAY    15            /* Array of destructors */
#define SHT_PREINIT_ARRAY 16            /* Array of pre-constructors */
#define SHT_GROUP         17            /* Section group */
#define SHT_SYMTAB_SHNDX  18            /* Extended section indeces */
#define SHT_NUM           19            /* Number of defined types.  */
#define SHT_LOOS          0x60000000    /* Start OS-specific */
#define SHT_GNU_LIBLIST   0x6ffffff7    /* Prelink library list */
#define SHT_CHECKSUM      0x6ffffff8    /* Checksum for DSO content.  */
#define SHT_LOSUNW        0x6ffffffa    /* Sun-specific low bound.  */
#define SHT_SUNW_move     0x6ffffffa
#define SHT_SUNW_COMDAT   0x6ffffffb
#define SHT_SUNW_syminfo  0x6ffffffc
#define SHT_GNU_verdef    0x6ffffffd    /* Version definition section.  */
#define SHT_GNU_verneed   0x6ffffffe    /* Version needs section.  */
#define SHT_GNU_versym    0x6fffffff    /* Version symbol table.  */
#define SHT_HISUNW        0x6fffffff    /* Sun-specific high bound.  */
#define SHT_HIOS          0x6fffffff    /* End OS-specific type */
#define SHT_LOPROC        0x70000000    /* Start of processor-specific */
#define SHT_HIPROC        0x7fffffff    /* End of processor-specific */
#define SHT_LOUSER        0x80000000    /* Start of application-specific */
#define SHT_HIUSER        0x8fffffff    /* End of application-specific */

/* Legal values for sh_flags (section flags).  */

#define SHF_WRITE            (1 << 0)   /* Writable */
#define SHF_ALLOC            (1 << 1)   /* Occupies memory during execution */
#define SHF_EXECINSTR        (1 << 2)   /* Executable */
#define SHF_MERGE            (1 << 4)   /* Might be merged */
#define SHF_STRINGS          (1 << 5)   /* Contains nul-terminated strings */
#define SHF_INFO_LINK        (1 << 6)   /* `sh_info' contains SHT index */
#define SHF_LINK_ORDER       (1 << 7)   /* Preserve order after combining */
#define SHF_OS_NONCONFORMING (1 << 8)   /* Non-standard OS specific handling
                                           required */
#define SHF_GROUP            (1 << 9)   /* Section is member of a group.  */
#define SHF_TLS              (1 << 10)  /* Section hold thread-local data.  */
#define SHF_MASKOS           0x0ff00000 /* OS-specific.  */
#define SHF_MASKPROC         0xf0000000 /* Processor-specific */
#define SHF_ORDERED          (1 << 30)  /* Special ordering requirement
                                           (Solaris).  */
#define SHF_EXCLUDE          (1 << 31)  /* Section is excluded unless
                                           referenced or allocated (Solaris).*/

/* Section group handling.  */
#define GRP_COMDAT      0x1             /* Mark group as COMDAT.  */

/* Symbol table entry.  */

typedef struct
{
  Elf32_Word    st_name;                /* Symbol name (string tbl index) */
  Elf32_Addr    st_value;               /* Symbol value */
  Elf32_Word    st_size;                /* Symbol size */
  unsigned char st_info;                /* Symbol type and binding */
  unsigned char st_other;               /* Symbol visibility */
  Elf32_Section st_shndx;               /* Section index */
} Elf32_Sym;

typedef struct
{
  Elf64_Word    st_name;                /* Symbol name (string tbl index) */
  unsigned char st_info;                /* Symbol type and binding */
  unsigned char st_other;               /* Symbol visibility */
  Elf64_Section st_shndx;               /* Section index */
  Elf64_Addr    st_value;               /* Symbol value */
  Elf64_Xword   st_size;                /* Symbol size */
} Elf64_Sym;

/* The syminfo section if available contains additional information about
   every dynamic symbol.  */

typedef struct
{
  Elf32_Half si_boundto;                /* Direct bindings, symbol bound to */
  Elf32_Half si_flags;                  /* Per symbol flags */
} Elf32_Syminfo;

typedef struct
{
  Elf64_Half si_boundto;                /* Direct bindings, symbol bound to */
  Elf64_Half si_flags;                  /* Per symbol flags */
} Elf64_Syminfo;

/* Possible values for si_boundto.  */
#define SYMINFO_BT_SELF         0xffff  /* Symbol bound to self */
#define SYMINFO_BT_PARENT       0xfffe  /* Symbol bound to parent */
#define SYMINFO_BT_LOWRESERVE   0xff00  /* Beginning of reserved entries */

/* Possible bitmasks for si_flags.  */
#define SYMINFO_FLG_DIRECT      0x0001  /* Direct bound symbol */
#define SYMINFO_FLG_PASSTHRU    0x0002  /* Pass-thru symbol for translator */
#define SYMINFO_FLG_COPY        0x0004  /* Symbol is a copy-reloc */
#define SYMINFO_FLG_LAZYLOAD    0x0008  /* Symbol bound to object to be lazy
                                           loaded */
/* Syminfo version values.  */
#define SYMINFO_NONE            0
#define SYMINFO_CURRENT         1
#define SYMINFO_NUM             2


/* How to extract and insert information held in the st_info field.  */

#define ELF32_ST_BIND(val)              (((unsigned char) (val)) >> 4)
#define ELF32_ST_TYPE(val)              ((val) & 0xf)
#define ELF32_ST_INFO(bind, type)       (((bind) << 4) + ((type) & 0xf))

/* Both Elf32_Sym and Elf64_Sym use the same one-byte st_info field.  */
#define ELF64_ST_BIND(val)              ELF32_ST_BIND (val)
#define ELF64_ST_TYPE(val)              ELF32_ST_TYPE (val)
#define ELF64_ST_INFO(bind, type)       ELF32_ST_INFO ((bind), (type))

/* Legal values for ST_BIND subfield of st_info (symbol binding).  */

#define STB_LOCAL       0               /* Local symbol */
#define STB_GLOBAL      1               /* Global symbol */
#define STB_WEAK        2               /* Weak symbol */
#define STB_NUM         3               /* Number of defined types.  */
#define STB_LOOS        10              /* Start of OS-specific */
#define STB_HIOS        12              /* End of OS-specific */
#define STB_LOPROC      13              /* Start of processor-specific */
#define STB_HIPROC      15              /* End of processor-specific */

/* Legal values for ST_TYPE subfield of st_info (symbol type).  */

#define STT_NOTYPE      0               /* Symbol type is unspecified */
#define STT_OBJECT      1               /* Symbol is a data object */
#define STT_FUNC        2               /* Symbol is a code object */
#define STT_SECTION     3               /* Symbol associated with a section */
#define STT_FILE        4               /* Symbol's name is file name */
#define STT_COMMON      5               /* Symbol is a common data object */
#define STT_TLS         6               /* Symbol is thread-local data object*/
#define STT_NUM         7               /* Number of defined types.  */
#define STT_LOOS        10              /* Start of OS-specific */
#define STT_HIOS        12              /* End of OS-specific */
#define STT_LOPROC      13              /* Start of processor-specific */
#define STT_HIPROC      15              /* End of processor-specific */


/* Symbol table indices are found in the hash buckets and chain table
   of a symbol hash table section.  This special index value indicates
   the end of a chain, meaning no further symbols are found in that bucket.  */

#define STN_UNDEF       0               /* End of a chain.  */


/* How to extract and insert information held in the st_other field.  */

#define ELF32_ST_VISIBILITY(o)  ((o) & 0x03)

/* For ELF64 the definitions are the same.  */
#define ELF64_ST_VISIBILITY(o)  ELF32_ST_VISIBILITY (o)

/* Symbol visibility specification encoded in the st_other field.  */
#define STV_DEFAULT     0               /* Default symbol visibility rules */
#define STV_INTERNAL    1               /* Processor specific hidden class */
#define STV_HIDDEN      2               /* Sym unavailable in other modules */
#define STV_PROTECTED   3               /* Not preemptible, not exported */


/* Relocation table entry without addend (in section of type SHT_REL).  */

typedef struct
{
  Elf32_Addr    r_offset;               /* Address */
  Elf32_Word    r_info;                 /* Relocation type and symbol index */
} Elf32_Rel;

/* I have seen two different definitions of the Elf64_Rel and
   Elf64_Rela structures, so we'll leave them out until Novell (or
   whoever) gets their act together.  */
/* The following, at least, is used on Sparc v9, MIPS, and Alpha.  */

typedef struct
{
  Elf64_Addr    r_offset;               /* Address */
  Elf64_Xword   r_info;                 /* Relocation type and symbol index */
} Elf64_Rel;

/* Relocation table entry with addend (in section of type SHT_RELA).  */

typedef struct
{
  Elf32_Addr    r_offset;               /* Address */
  Elf32_Word    r_info;                 /* Relocation type and symbol index */
  Elf32_Sword   r_addend;               /* Addend */
} Elf32_Rela;

typedef struct
{
  Elf64_Addr    r_offset;               /* Address */
  Elf64_Xword   r_info;                 /* Relocation type and symbol index */
  Elf64_Sxword  r_addend;               /* Addend */
} Elf64_Rela;

/* How to extract and insert information held in the r_info field.  */

#define ELF32_R_SYM(val)                ((val) >> 8)
#define ELF32_R_TYPE(val)               ((val) & 0xff)
#define ELF32_R_INFO(sym, type)         (((sym) << 8) + ((type) & 0xff))

#define ELF64_R_SYM(i)                  ((i) >> 32)
#define ELF64_R_TYPE(i)                 ((i) & 0xffffffff)
#define ELF64_R_INFO(sym,type)          ((((Elf64_Xword) (sym)) << 32) + (type))

/* Program segment header.  */

typedef struct
{
  Elf32_Word    p_type;                 /* Segment type */
  Elf32_Off     p_offset;               /* Segment file offset */
  Elf32_Addr    p_vaddr;                /* Segment virtual address */
  Elf32_Addr    p_paddr;                /* Segment physical address */
  Elf32_Word    p_filesz;               /* Segment size in file */
  Elf32_Word    p_memsz;                /* Segment size in memory */
  Elf32_Word    p_flags;                /* Segment flags */
  Elf32_Word    p_align;                /* Segment alignment */
} Elf32_Phdr;

typedef struct
{
  Elf64_Word    p_type;                 /* Segment type */
  Elf64_Word    p_flags;                /* Segment flags */
  Elf64_Off     p_offset;               /* Segment file offset */
  Elf64_Addr    p_vaddr;                /* Segment virtual address */
  Elf64_Addr    p_paddr;                /* Segment physical address */
  Elf64_Xword   p_filesz;               /* Segment size in file */
  Elf64_Xword   p_memsz;                /* Segment size in memory */
  Elf64_Xword   p_align;                /* Segment alignment */
} Elf64_Phdr;

/* Legal values for p_type (segment type).  */

#define PT_NULL         0               /* Program header table entry unused */
#define PT_LOAD         1               /* Loadable program segment */
#define PT_DYNAMIC      2               /* Dynamic linking information */
#define PT_INTERP       3               /* Program interpreter */
#define PT_NOTE         4               /* Auxiliary information */
#define PT_SHLIB        5               /* Reserved */
#define PT_PHDR         6               /* Entry for header table itself */
#define PT_TLS          7               /* Thread-local storage segment */
#define PT_NUM          8               /* Number of defined types */
#define PT_LOOS         0x60000000      /* Start of OS-specific */
#define PT_GNU_EH_FRAME 0x6474e550      /* GCC .eh_frame_hdr segment */
#define PT_GNU_STACK    0x6474e551      /* Indicates stack executability */
#define PT_GNU_RELRO    0x6474e552      /* Read-only after relocation */
#define PT_LOSUNW       0x6ffffffa
#define PT_SUNWBSS      0x6ffffffa      /* Sun Specific segment */
#define PT_SUNWSTACK    0x6ffffffb      /* Stack segment */
#define PT_HISUNW       0x6fffffff
#define PT_HIOS         0x6fffffff      /* End of OS-specific */
#define PT_LOPROC       0x70000000      /* Start of processor-specific */
#define PT_HIPROC       0x7fffffff      /* End of processor-specific */

/* Legal values for p_flags (segment flags).  */

#define PF_X            (1 << 0)        /* Segment is executable */
#define PF_W            (1 << 1)        /* Segment is writable */
#define PF_R            (1 << 2)        /* Segment is readable */
#define PF_MASKOS       0x0ff00000      /* OS-specific */
#define PF_MASKPROC     0xf0000000      /* Processor-specific */

/* Legal values for note segment descriptor types for core files. */

#define NT_PRSTATUS     1               /* Contains copy of prstatus struct */
#define NT_FPREGSET     2               /* Contains copy of fpregset struct */
#define NT_PRPSINFO     3               /* Contains copy of prpsinfo struct */
#define NT_PRXREG       4               /* Contains copy of prxregset struct */
#define NT_TASKSTRUCT   4               /* Contains copy of task structure */
#define NT_PLATFORM     5               /* String from sysinfo(SI_PLATFORM) */
#define NT_AUXV         6               /* Contains copy of auxv array */
#define NT_GWINDOWS     7               /* Contains copy of gwindows struct */
#define NT_ASRS         8               /* Contains copy of asrset struct */
#define NT_PSTATUS      10              /* Contains copy of pstatus struct */
#define NT_PSINFO       13              /* Contains copy of psinfo struct */
#define NT_PRCRED       14              /* Contains copy of prcred struct */
#define NT_UTSNAME      15              /* Contains copy of utsname struct */
#define NT_LWPSTATUS    16              /* Contains copy of lwpstatus struct */
#define NT_LWPSINFO  &