1  /* Copyright (C) 2012-2023 Free Software Foundation, Inc.
       2  
       3     This file is part of GNU Binutils.
       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, write to the Free Software
      17     Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
      18     MA 02110-1301, USA.  */
      19  
      20  #ifndef cg_dfn_h
      21  #define cg_dfn_h
      22  
      23  /*
      24   * Flags which mark a symbol as topologically ``busy'' or as
      25   * topologically ``not_numbered'':
      26   */
      27  #define	DFN_BUSY	-1
      28  #define	DFN_NAN		0
      29  
      30  /*
      31   * Depth-first numbering of a call-graph.
      32   */
      33  
      34  extern void cg_dfn (Sym * root);
      35  
      36  #endif /* cg_dfn_h */