file/src/readelf.h

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/*
 * Copyright (c) Christos Zoulas 2003.
 * 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 immediately at the beginning of the file, without modification,
 *    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.
 */
/*
 * @(#)Id: readelf.h,v 1.9 2002/05/16 18:45:56 christos Exp
 *
 * Provide elf data structures for non-elf machines, allowing file
 * non-elf hosts to determine if an elf binary is stripped.
 * Note: cobbled from the linux header file, with modifications
 */
#ifndef __fake_elf_h__
#define __fake_elf_h__

#if HAVE_STDINT_H
#include <stdint.h>
#endif

typedef uint32_t        Elf32_Addr;
typedef uint32_t        Elf32_Off;
typedef uint16_t        Elf32_Half;
typedef uint32_t        Elf32_Word;
typedef uint8_t         Elf32_Char;

#if SIZEOF_UINT64_T != 8
#define USE_ARRAY_FOR_64BIT_TYPES
typedef uint32_t        Elf64_Addr[2];
typedef uint32_t        Elf64_Off[2];
typedef uint32_t        Elf64_Xword[2];
#else
typedef uint64_t        Elf64_Addr;
typedef uint64_t        Elf64_Off;
typedef uint64_t        Elf64_Xword;
#endif
typedef uint16_t        Elf64_Half;
typedef uint32_t        Elf64_Word;
typedef uint8_t         Elf64_Char;

#define EI_NIDENT       16

typedef struct {
    Elf32_Char  e_ident[EI_NIDENT];
    Elf32_Half  e_type;
    Elf32_Half  e_machine;
    Elf32_Word  e_version;
    Elf32_Addr  e_entry;  /* Entry point */
    Elf32_Off   e_phoff;
    Elf32_Off   e_shoff;
    Elf32_Word  e_flags;
    Elf32_Half  e_ehsize;
    Elf32_Half  e_phentsize;
    Elf32_Half  e_phnum;
    Elf32_Half  e_shentsize;
    Elf32_Half  e_shnum;
    Elf32_Half  e_shstrndx;
} Elf32_Ehdr;

typedef struct {
    Elf64_Char  e_ident[EI_NIDENT];
    Elf64_Half  e_type;
    Elf64_Half  e_machine;
    Elf64_Word  e_version;
    Elf64_Addr  e_entry;  /* Entry point */
    Elf64_Off   e_phoff;
    Elf64_Off   e_shoff;
    Elf64_Word  e_flags;
    Elf64_Half  e_ehsize;
    Elf64_Half  e_phentsize;
    Elf64_Half  e_phnum;
    Elf64_Half  e_shentsize;
    Elf64_Half  e_shnum;
    Elf64_Half  e_shstrndx;
} Elf64_Ehdr;

/* e_type */
#define ET_EXEC         2
#define ET_CORE         4

/* sh_type */
#define SHT_SYMTAB      2
#define SHT_NOTE        7
#define SHT_DYNSYM      11

/* elf type */
#define ELFDATANONE     0               /* e_ident[EI_DATA] */
#define ELFDATA2LSB     1
#define ELFDATA2MSB     2

/* elf class */
#define ELFCLASSNONE    0
#define ELFCLASS32      1
#define ELFCLASS64      2

/* magic number */
#define EI_MAG0         0               /* e_ident[] indexes */
#define EI_MAG1         1
#define EI_MAG2         2
#define EI_MAG3         3
#define EI_CLASS        4
#define EI_DATA         5
#define EI_VERSION      6
#define EI_PAD          7

#define ELFMAG0         0x7f            /* EI_MAG */
#define ELFMAG1         'E'
#define ELFMAG2         'L'
#define ELFMAG3         'F'
#define ELFMAG          "\177ELF"

#define OLFMAG1         'O'
#define OLFMAG          "\177OLF"

typedef struct {
    Elf32_Word  p_type;
    Elf32_Off   p_offset;
    Elf32_Addr  p_vaddr;
    Elf32_Addr  p_paddr;
    Elf32_Word  p_filesz;
    Elf32_Word  p_memsz;
    Elf32_Word  p_flags;
    Elf32_Word  p_align;
} Elf32_Phdr;

typedef struct {
    Elf64_Word  p_type;
    Elf64_Word  p_flags;
    Elf64_Off   p_offset;
    Elf64_Addr  p_vaddr;
    Elf64_Addr  p_paddr;
    Elf64_Xword p_filesz;
    Elf64_Xword p_memsz;
    Elf64_Xword p_align;
} Elf64_Phdr;

#define PT_NULL         0               /* p_type */
#define PT_LOAD         1
#define PT_DYNAMIC      2
#define PT_INTERP       3
#define PT_NOTE         4
#define PT_SHLIB        5
#define PT_PHDR         6
#define PT_NUM          7

typedef struct {
    Elf32_Word  sh_name;
    Elf32_Word  sh_type;
    Elf32_Word  sh_flags;
    Elf32_Addr  sh_addr;
    Elf32_Off   sh_offset;
    Elf32_Word  sh_size;
    Elf32_Word  sh_link;
    Elf32_Word  sh_info;
    Elf32_Word  sh_addralign;
    Elf32_Word  sh_entsize;
} Elf32_Shdr;

typedef struct {
    Elf64_Word  sh_name;
    Elf64_Word  sh_type;
    Elf64_Off   sh_flags;
    Elf64_Addr  sh_addr;
    Elf64_Off   sh_offset;
    Elf64_Off   sh_size;
    Elf64_Word  sh_link;
    Elf64_Word  sh_info;
    Elf64_Off   sh_addralign;
    Elf64_Off   sh_entsize;
} Elf64_Shdr;

/* Notes used in ET_CORE */
#define NT_PRSTATUS     1
#define NT_PRFPREG      2
#define NT_PRPSINFO     3
#define NT_TASKSTRUCT   4

#define NT_NETBSD_CORE_PROCINFO         1

/* Note header in a PT_NOTE section */
typedef struct elf_note {
    Elf32_Word  n_namesz;       /* Name size */
    Elf32_Word  n_descsz;       /* Content size */
    Elf32_Word  n_type;         /* Content type */
} Elf32_Nhdr;

typedef struct {
    Elf64_Word  n_namesz;
    Elf64_Word  n_descsz;
    Elf64_Word  n_type;
} Elf64_Nhdr;

#define NT_PRSTATUS     1
#define NT_PRFPREG      2
#define NT_PRPSINFO     3
#define NT_PRXREG       4
#define NT_PLATFORM     5
#define NT_AUXV         6

/* Note types used in executables */
/* NetBSD executables (name = "NetBSD") */
#define NT_NETBSD_VERSION       1
#define NT_NETBSD_EMULATION     2
#define NT_FREEBSD_VERSION      1
#define NT_OPENBSD_VERSION      1
#define NT_DRAGONFLY_VERSION    1
/* GNU executables (name = "GNU") */
#define NT_GNU_VERSION          1

/* GNU OS tags */
#define GNU_OS_LINUX    0
#define GNU_OS_HURD     1
#define GNU_OS_SOLARIS  2

#endif

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