Line data    Source code

       1             : /* Return source file information of CU.
       2             :    Copyright (C) 2004, 2005, 2013, 2015 Red Hat, Inc.
       3             :    This file is part of elfutils.
       4             :    Written by Ulrich Drepper <drepper@redhat.com>, 2004.
       5             : 
       6             :    This file is free software; you can redistribute it and/or modify
       7             :    it under the terms of either
       8             : 
       9             :      * the GNU Lesser General Public License as published by the Free
      10             :        Software Foundation; either version 3 of the License, or (at
      11             :        your option) any later version
      12             : 
      13             :    or
      14             : 
      15             :      * the GNU General Public License as published by the Free
      16             :        Software Foundation; either version 2 of the License, or (at
      17             :        your option) any later version
      18             : 
      19             :    or both in parallel, as here.
      20             : 
      21             :    elfutils is distributed in the hope that it will be useful, but
      22             :    WITHOUT ANY WARRANTY; without even the implied warranty of
      23             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      24             :    General Public License for more details.
      25             : 
      26             :    You should have received copies of the GNU General Public License and
      27             :    the GNU Lesser General Public License along with this program.  If
      28             :    not, see <http://www.gnu.org/licenses/>.  */
      29             : 
      30             : #ifdef HAVE_CONFIG_H
      31             : # include <config.h>
      32             : #endif
      33             : 
      34             : #include <assert.h>
      35             : #include <dwarf.h>
      36             : #include "libdwP.h"
      37             : 
      38             : 
      39             : int
      40        3252 : dwarf_getsrcfiles (Dwarf_Die *cudie, Dwarf_Files **files, size_t *nfiles)
      41             : {
      42        3252 :   if (cudie == NULL)
      43             :     return -1;
      44        6504 :   if (! is_cudie (cudie))
      45             :     {
      46           0 :       __libdw_seterrno (DWARF_E_NOT_CUDIE);
      47           0 :       return -1;
      48             :     }
      49             : 
      50        3252 :   int res = -1;
      51             : 
      52             :   /* Get the information if it is not already known.  */
      53        3252 :   struct Dwarf_CU *const cu = cudie->cu;
      54        3252 :   if (cu->lines == NULL)
      55             :     {
      56             :       Dwarf_Lines *lines;
      57             :       size_t nlines;
      58             : 
      59             :       /* Let the more generic function do the work.  It'll create more
      60             :          data but that will be needed in an real program anyway.  */
      61        3151 :       res = INTUSE(dwarf_getsrclines) (cudie, &lines, &nlines);
      62             :     }
      63         101 :   else if (cu->files != (void *) -1l)
      64             :     /* We already have the information.  */
      65         101 :     res = 0;
      66             : 
      67        3252 :   if (likely (res == 0))
      68             :     {
      69        3252 :       assert (cu->files != NULL && cu->files != (void *) -1l);
      70        3252 :       *files = cu->files;
      71        3252 :       if (nfiles != NULL)
      72        3147 :         *nfiles = cu->files->nfiles;
      73             :     }
      74             : 
      75             :   // XXX Eventually: unlocking here.
      76             : 
      77             :   return res;
      78             : }
      79             : INTDEF (dwarf_getsrcfiles)