include/elf-internal.h

   1 /* ELF support for BFD.
   2    Copyright (C) 1991 Free Software Foundation, Inc.
   3
   4    Written by Fred Fish @ Cygnus Support, from information published
   5    in "UNIX System V Release 4, Programmers Guide: ANSI C and
   6    Programming Support Tools".
   7
   8 This file is part of BFD, the Binary File Descriptor library.
   9
  10 This program is free software; you can redistribute it and/or modify
  11 it under the terms of the GNU General Public License as published by
  12 the Free Software Foundation; either version 2 of the License, or
  13 (at your option) any later version.
  14
  15 This program is distributed in the hope that it will be useful,
  16 but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 GNU General Public License for more details.
  19
  20 You should have received a copy of the GNU General Public License
  21 along with this program; if not, write to the Free Software
  22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  23
  24
  25 /* This file is part of ELF support for BFD, and contains the portions
  26    that describe how ELF is represented internally in the BFD library.
  27    I.E. it describes the in-memory representation of ELF.  It requires
  28    the elf-common.h file which contains the portions that are common to
  29    both the internal and external representations. */
  30
  31 /* Types used by various structures, functions, etc. */
  32
  33 typedef unsigned long   Elf_Addr;       /* Unsigned program address */
  34 typedef unsigned long   Elf_Off;        /* Unsigned file offset */
  35 typedef          long   Elf_Sword;      /* Signed large integer */
  36 typedef unsigned long   Elf_Word;       /* Unsigned large integer */
  37 typedef unsigned short  Elf_Half;       /* Unsigned medium integer */
  38 typedef unsigned char   Elf_Char;       /* Unsigned tiny integer */
  39
  40 /* ELF Header */
  41
  42 #define EI_NIDENT       16              /* Size of e_ident[] */
  43
  44 typedef struct {
  45   unsigned char e_ident[EI_NIDENT];     /* ELF "magic number" */
  46   Elf_Half      e_type;                 /* Identifies object file type */
  47   Elf_Half      e_machine;              /* Specifies required architecture */
  48   Elf_Word      e_version;              /* Identifies object file version */
  49   Elf_Addr      e_entry;                /* Entry point virtual address */
  50   Elf_Off       e_phoff;                /* Program header table file offset */
  51   Elf_Off       e_shoff;                /* Section header table file offset */
  52   Elf_Word      e_flags;                /* Processor-specific flags */
  53   Elf_Half      e_ehsize;               /* ELF header size in bytes */
  54   Elf_Half      e_phentsize;            /* Program header table entry size */
  55   Elf_Half      e_phnum;                /* Program header table entry count */
  56   Elf_Half      e_shentsize;            /* Section header table entry size */
  57   Elf_Half      e_shnum;                /* Section header table entry count */
  58   Elf_Half      e_shstrndx;             /* Section header string table index */
  59 } Elf_Internal_Ehdr;
  60
  61 /* Program header */
  62
  63 typedef struct {
  64   Elf_Word      p_type;                 /* Identifies program segment type */
  65   Elf_Off       p_offset;               /* Segment file offset */
  66   Elf_Addr      p_vaddr;                /* Segment virtual address */
  67   Elf_Addr      p_paddr;                /* Segment physical address */
  68   Elf_Word      p_filesz;               /* Segment size in file */
  69   Elf_Word      p_memsz;                /* Segment size in memory */
  70   Elf_Word      p_flags;                /* Segment flags */
  71   Elf_Word      p_align;                /* Segment alignment, file & memory */
  72 } Elf_Internal_Phdr;
  73
  74 /* Section header */
  75
  76 typedef struct {
  77   Elf_Word      sh_name;                /* Section name, index in string tbl */
  78   Elf_Word      sh_type;                /* Type of section */
  79   Elf_Word      sh_flags;               /* Miscellaneous section attributes */
  80   Elf_Addr      sh_addr;                /* Section virtual addr at execution */
  81   Elf_Off       sh_offset;              /* Section file offset */
  82   Elf_Word      sh_size;                /* Size of section in bytes */
  83   Elf_Word      sh_link;                /* Index of another section */
  84   Elf_Word      sh_info;                /* Additional section information */
  85   Elf_Word      sh_addralign;           /* Section alignment */
  86   Elf_Word      sh_entsize;             /* Entry size if section holds table */
  87 } Elf_Internal_Shdr;
  88
  89 /* Symbol table entry */
  90
  91 typedef struct {
  92   Elf_Word      st_name;                /* Symbol name, index in string tbl */
  93   Elf_Addr      st_value;               /* Value of the symbol */
  94   Elf_Word      st_size;                /* Associated symbol size */
  95   Elf_Char      st_info;                /* Type and binding attributes */
  96   Elf_Char      st_other;               /* No defined meaning, 0 */
  97   Elf_Half      st_shndx;               /* Associated section index */
  98 } Elf_Internal_Sym;