apps/zasm/buffer.h

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2008  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *
   5  *  This program is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef __BUFFER_H
  20 #define __BUFFER_H
  21
  22 #define __PACKED__ __attribute__ ((__packed__))
  23
  24 typedef struct {
  25         unsigned sect_name              __PACKED__;
  26         unsigned type                   __PACKED__;
  27         unsigned flags                  __PACKED__;
  28         unsigned virt_adr               __PACKED__;
  29         unsigned offset                 __PACKED__;
  30         unsigned size                   __PACKED__;
  31         unsigned link                   __PACKED__;
  32         unsigned info                   __PACKED__;
  33         unsigned align                  __PACKED__;
  34         unsigned ent_size               __PACKED__;
  35 } elf_sect_t;
  36
  37 typedef struct {
  38         unsigned magic;
  39         unsigned char bitness;
  40         unsigned char endian;
  41         unsigned char elf_ver_1;
  42         unsigned char res[9];
  43         unsigned short file_type        __PACKED__;
  44         unsigned short machine          __PACKED__;
  45         unsigned elf_ver_2              __PACKED__;
  46         unsigned entry_pt               __PACKED__;
  47         unsigned phtab_offset           __PACKED__;
  48         unsigned shtab_offset           __PACKED__;
  49         unsigned flags                  __PACKED__;
  50         unsigned short file_hdr_size    __PACKED__;
  51         unsigned short phtab_ent_size   __PACKED__;
  52         unsigned short num_phtab_ents   __PACKED__;
  53         unsigned short shtab_ent_size   __PACKED__;
  54         unsigned short num_sects                __PACKED__;
  55         unsigned short shstrtab_index   __PACKED__;
  56 } elf_file_t;
  57
  58 extern int buffer_copy (unsigned offset, char *data, unsigned size);
  59 extern char *buffer_get ();
  60 extern int buffer_write (char *file);
  61 extern int buffer_init ();
  62
  63 #endif