kernel/arch/ppc/elf.c

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2009  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
  20 #include <elf.h>
  21
  22
  23 unsigned arch_elf_detect (elf_file_t *file)
  24 {
  25         if(file->magic != 0x464C457FL) { /* "\x7fELF" */
  26                 kprintf ("File is not relocatable ELF; has bad magic value "
  27                         "0x%lX (should be 0x464C457F)\n", file->magic);
  28                 return 0;
  29         }
  30
  31         if(file->bitness != 1) {
  32                 kprintf ("File is 64-bit ELF, not 32-bit\n");
  33                 return 0;
  34         }
  35
  36         if(file->endian != 1) {
  37                 kprintf ("File is big endian ELF, not little\n");
  38                 return 0;
  39         }
  40
  41         if(file->elf_ver_1 != 1) {
  42                 kprintf ("File has bad ELF version %u\n", file->elf_ver_1);
  43                 return 0;
  44         }
  45
  46         if(file->file_type != 1 && file->file_type != 2) {
  47                 kprintf ("File is not relocatable ELF (could be "
  48                         "executable, DLL, or core file) - currently is %d\n", file->file_type);
  49                 return 0;
  50         }
  51
  52         if(file->machine != 5) {
  53                 kprintf ("File is not PowerPC ELF\n");
  54                 return 0;
  55         }
  56
  57         if(file->elf_ver_2 != 1) {
  58                 kprintf ("File has bad ELF version %lu\n", file->elf_ver_2);
  59                 return 0;
  60         }
  61
  62         return 1;
  63 }