arch/all-pc/boot/grub2-aros/grub-core/lib/backtrace.c

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2009  Free Software Foundation, Inc.
   4  *
   5  *  GRUB 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  *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <grub/misc.h>
  20 #include <grub/command.h>
  21 #include <grub/err.h>
  22 #include <grub/dl.h>
  23 #include <grub/mm.h>
  24 #include <grub/term.h>
  25 #include <grub/backtrace.h>
  26
  27 GRUB_MOD_LICENSE ("GPLv3+");
  28
  29 void
  30 grub_backtrace_print_address (void *addr)
  31 {
  32   grub_dl_t mod;
  33
  34   FOR_DL_MODULES (mod)
  35   {
  36     grub_dl_segment_t segment;
  37     for (segment = mod->segment; segment; segment = segment->next)
  38       if (segment->addr <= addr && (grub_uint8_t *) segment->addr
  39           + segment->size > (grub_uint8_t *) addr)
  40         {
  41           grub_printf ("%s.%x+%" PRIxGRUB_SIZE, mod->name, segment->section,
  42                        (grub_uint8_t *) addr - (grub_uint8_t *) segment->addr);
  43           return;
  44         }
  45   }
  46
  47   grub_printf ("%p", addr);
  48 }
  49
  50 static grub_err_t
  51 grub_cmd_backtrace (grub_command_t cmd __attribute__ ((unused)),
  52                     int argc __attribute__ ((unused)),
  53                     char **args __attribute__ ((unused)))
  54 {
  55   grub_backtrace ();
  56   return 0;
  57 }
  58
  59 static grub_command_t cmd;
  60
  61 GRUB_MOD_INIT(backtrace)
  62 {
  63   cmd = grub_register_command ("backtrace", grub_cmd_backtrace,
  64                                0, N_("Print backtrace."));
  65 }
  66
  67 GRUB_MOD_FINI(backtrace)
  68 {
  69   grub_unregister_command (cmd);
  70 }