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readelf.h

/*
 * 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
/* 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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