/* Test program for dwarf_ranges

   Copyright (C) 2015, 2018 Red Hat, Inc.

   This file is part of elfutils.

   This file is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   elfutils is distributed in the hope that it will be useful, but

   WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <config.h>

#include ELFUTILS_HEADER(dw)

#include <dwarf.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <fcntl.h>

#include <stdio.h>

#include <stdint.h>

#include <stdlib.h>

#include <assert.h>

#include <inttypes.h>

static void

ranges_die (Dwarf_Die *die)

{

  Dwarf_Addr base, start, end;

  int ranges = dwarf_ranges (die, 0, &base, &start, &end;;

  if (ranges < 0)

    puts (dwarf_errmsg (-1));

  else if (ranges > 0)

    {

      printf ("die: %s (%x)\n", dwarf_diename (die) ?: "<unknown>",

	      dwarf_tag (die));

      for (ptrdiff_t off = 0;

	   (off = dwarf_ranges (die, off, &base, &start, &end)); )

	if (off == -1)

	  {

	    puts (dwarf_errmsg (-1));

	    break;

	  }

	else

	  printf (" %"PRIx64"..%"PRIx64"\n", start, end);

      printf ("\n");

    }

}

static void

walk_tree (Dwarf_Die *dwarf_die)

{

  Dwarf_Die die = *dwarf_die;

  do

    {

      Dwarf_Die child;

      ranges_die (&die);

      if (dwarf_child (&die, &child) == 0)

	walk_tree (&child);

    }

  while (dwarf_siblingof (&die, &die) == 0);

}

int

main (int argc, char *argv[])

{

  assert (argc >= 2);

  const char *name = argv[1];

  int fd = open (name, O_RDONLY);

  Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ);

  Dwarf_CU *cu = NULL;

  Dwarf_Die cudie, subdie;

  uint8_t unit_type;

  while (dwarf_get_units (dbg, cu, &cu, NULL,

			  &unit_type, &cudie, &subdie) == 0)

    {

      Dwarf_Die die = (unit_type == DW_UT_skeleton

		       ? subdie : cudie);

      walk_tree (&die);

    }

  dwarf_end (dbg);

  return 0;

}