src/light_elf.h

   1 /*
   2  *
   3  *  Linux kernel
   4  *  Copyright (C) 2017 Linus Torvalds
   5  *  Modified work Copyright (C) 2017 @teras (https://github.com/teras)
   6  *  (Shortened version -- original work found here:
   7  *   https://github.com/torvalds/linux/blob/master/include/uapi/linux/elf.h)
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  21  *
  22  */
  23
  24 #ifndef LIGHT_ELF_H
  25 #define LIGHT_ELF_H
  26
  27 #include <inttypes.h>
  28
  29 __BEGIN_DECLS
  30
  31 typedef uint16_t Elf32_Half;
  32 typedef uint16_t Elf64_Half;
  33 typedef uint32_t Elf32_Word;
  34 typedef uint32_t Elf64_Word;
  35 typedef uint64_t Elf64_Xword;
  36 typedef uint32_t Elf32_Addr;
  37 typedef uint64_t Elf64_Addr;
  38 typedef uint32_t Elf32_Off;
  39 typedef uint64_t Elf64_Off;
  40
  41 #define EI_NIDENT 16
  42
  43 typedef struct elf32_hdr {
  44     unsigned char e_ident[EI_NIDENT];
  45     Elf32_Half e_type;
  46     Elf32_Half e_machine;
  47     Elf32_Word e_version;
  48     Elf32_Addr e_entry; /* Entry point */
  49     Elf32_Off e_phoff;
  50     Elf32_Off e_shoff;
  51     Elf32_Word e_flags;
  52     Elf32_Half e_ehsize;
  53     Elf32_Half e_phentsize;
  54     Elf32_Half e_phnum;
  55     Elf32_Half e_shentsize;
  56     Elf32_Half e_shnum;
  57     Elf32_Half e_shstrndx;
  58 } Elf32_Ehdr;
  59
  60 typedef struct elf64_hdr {
  61     unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */
  62     Elf64_Half e_type;
  63     Elf64_Half e_machine;
  64     Elf64_Word e_version;
  65     Elf64_Addr e_entry; /* Entry point virtual address */
  66     Elf64_Off e_phoff; /* Program header table file offset */
  67     Elf64_Off e_shoff; /* Section header table file offset */
  68     Elf64_Word e_flags;
  69     Elf64_Half e_ehsize;
  70     Elf64_Half e_phentsize;
  71     Elf64_Half e_phnum;
  72     Elf64_Half e_shentsize;
  73     Elf64_Half e_shnum;
  74     Elf64_Half e_shstrndx;
  75 } Elf64_Ehdr;
  76
  77 typedef struct elf32_shdr {
  78     Elf32_Word sh_name;
  79     Elf32_Word sh_type;
  80     Elf32_Word sh_flags;
  81     Elf32_Addr sh_addr;
  82     Elf32_Off sh_offset;
  83     Elf32_Word sh_size;
  84     Elf32_Word sh_link;
  85     Elf32_Word sh_info;
  86     Elf32_Word sh_addralign;
  87     Elf32_Word sh_entsize;
  88 } Elf32_Shdr;
  89
  90 typedef struct elf64_shdr {
  91     Elf64_Word sh_name; /* Section name, index in string tbl */
  92     Elf64_Word sh_type; /* Type of section */
  93     Elf64_Xword sh_flags; /* Miscellaneous section attributes */
  94     Elf64_Addr sh_addr; /* Section virtual addr at execution */
  95     Elf64_Off sh_offset; /* Section file offset */
  96     Elf64_Xword sh_size; /* Size of section in bytes */
  97     Elf64_Word sh_link; /* Index of another section */
  98     Elf64_Word sh_info; /* Additional section information */
  99     Elf64_Xword sh_addralign; /* Section alignment */
 100     Elf64_Xword sh_entsize; /* Entry size if section holds table */
 101 } Elf64_Shdr;
 102
 103 /* Note header in a PT_NOTE section */
 104 typedef struct elf32_note {
 105     Elf32_Word n_namesz; /* Name size */
 106     Elf32_Word n_descsz; /* Content size */
 107     Elf32_Word n_type; /* Content type */
 108 } Elf32_Nhdr;
 109
 110 #define ELFCLASS32  1
 111 #define ELFDATA2LSB 1
 112 #define ELFDATA2MSB 2
 113 #define ELFCLASS64  2
 114 #define EI_CLASS    4
 115 #define EI_DATA     5
 116
 117 __END_DECLS
 118
 119 #endif /* elf.h */