#ifndef _DWARF_AUX_H
  #define _DWARF_AUX_H
  /*
   * dwarf-aux.h : libdw auxiliary interfaces
   *
   * This program 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 2 of the License, or
   * (at your option) any later version.
   *
   * This program 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, write to the Free Software
   * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
   *
   */
  
  #include <dwarf.h>
  #include <elfutils/libdw.h>
  #include <elfutils/libdwfl.h>
  #include <elfutils/version.h>
  
  /* Find the realpath of the target file */
  extern const char *cu_find_realpath(Dwarf_Die *cu_die, const char *fname);
  
  /* Get DW_AT_comp_dir (should be NULL with older gcc) */
  extern const char *cu_get_comp_dir(Dwarf_Die *cu_die);
  
  /* Get a line number and file name for given address */
  extern int cu_find_lineinfo(Dwarf_Die *cudie, unsigned long addr,
  			    const char **fname, int *lineno);
  
  /* Walk on funcitons at given address */
  extern int cu_walk_functions_at(Dwarf_Die *cu_die, Dwarf_Addr addr,
  			int (*callback)(Dwarf_Die *, void *), void *data);
  
  /* Ensure that this DIE is a subprogram and definition (not declaration) */
  extern bool die_is_func_def(Dwarf_Die *dw_die);
  
  /* Compare diename and tname */
  extern bool die_compare_name(Dwarf_Die *dw_die, const char *tname);
  
  /* Get callsite line number of inline-function instance */
  extern int die_get_call_lineno(Dwarf_Die *in_die);
  
  /* Get callsite file name of inlined function instance */
  extern const char *die_get_call_file(Dwarf_Die *in_die);
  
  /* Get type die */
  extern Dwarf_Die *die_get_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem);
  
  /* Get a type die, but skip qualifiers and typedef */
  extern Dwarf_Die *die_get_real_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem);
  
  /* Check whether the DIE is signed or not */
  extern bool die_is_signed_type(Dwarf_Die *tp_die);
  
  /* Get data_member_location offset */
  extern int die_get_data_member_location(Dwarf_Die *mb_die, Dwarf_Word *offs);
  
  /* Return values for die_find_child() callbacks */
  enum {
  	DIE_FIND_CB_END = 0,		/* End of Search */
  	DIE_FIND_CB_CHILD = 1,		/* Search only children */
  	DIE_FIND_CB_SIBLING = 2,	/* Search only siblings */
  	DIE_FIND_CB_CONTINUE = 3,	/* Search children and siblings */
  };
  
  /* Search child DIEs */
  extern Dwarf_Die *die_find_child(Dwarf_Die *rt_die,
  				 int (*callback)(Dwarf_Die *, void *),
  				 void *data, Dwarf_Die *die_mem);
  
  /* Search a non-inlined function including given address */
  extern Dwarf_Die *die_find_realfunc(Dwarf_Die *cu_die, Dwarf_Addr addr,
  				    Dwarf_Die *die_mem);
  
  /* Search the top inlined function including given address */
  extern Dwarf_Die *die_find_top_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr,
  					  Dwarf_Die *die_mem);
  
  /* Search the deepest inlined function including given address */
  extern Dwarf_Die *die_find_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr,
  				      Dwarf_Die *die_mem);
  
  /* Walk on the instances of given DIE */
  extern int die_walk_instances(Dwarf_Die *in_die,
  			      int (*callback)(Dwarf_Die *, void *), void *data);
  
  /* Walker on lines (Note: line number will not be sorted) */
  typedef int (* line_walk_callback_t) (const char *fname, int lineno,
  				      Dwarf_Addr addr, void *data);
  
  /*
   * Walk on lines inside given DIE. If the DIE is a subprogram, walk only on
   * the lines inside the subprogram, otherwise the DIE must be a CU DIE.
   */
  extern int die_walk_lines(Dwarf_Die *rt_die, line_walk_callback_t callback,
  			  void *data);
  
  /* Find a variable called 'name' at given address */
  extern Dwarf_Die *die_find_variable_at(Dwarf_Die *sp_die, const char *name,
  				       Dwarf_Addr addr, Dwarf_Die *die_mem);
  
  /* Find a member called 'name' */
  extern Dwarf_Die *die_find_member(Dwarf_Die *st_die, const char *name,
  				  Dwarf_Die *die_mem);
  
  /* Get the name of given variable DIE */
  extern int die_get_typename(Dwarf_Die *vr_die, char *buf, int len);
  
  /* Get the name and type of given variable DIE, stored as "type\tname" */
  extern int die_get_varname(Dwarf_Die *vr_die, char *buf, int len);
  #endif