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       1                 :            : /* Return source file information of CU.
       2                 :            :    Copyright (C) 2004, 2005 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                 :      14036 : dwarf_getsrcfiles (Dwarf_Die *cudie, Dwarf_Files **files, size_t *nfiles)
      41                 :            : {
      42 [ +  - ][ +  - ]:      14036 :   if (unlikely (cudie == NULL
      43                 :            :                 || INTUSE(dwarf_tag) (cudie) != DW_TAG_compile_unit))
      44                 :            :     return -1;
      45                 :            : 
      46                 :      14036 :   int res = -1;
      47                 :            : 
      48                 :            :   /* Get the information if it is not already known.  */
      49                 :      14036 :   struct Dwarf_CU *const cu = cudie->cu;
      50         [ +  - ]:      14036 :   if (cu->lines == NULL)
      51                 :            :     {
      52                 :            :       Dwarf_Lines *lines;
      53                 :            :       size_t nlines;
      54                 :            : 
      55                 :            :       /* Let the more generic function do the work.  It'll create more
      56                 :            :          data but that will be needed in an real program anyway.  */
      57                 :      14036 :       res = INTUSE(dwarf_getsrclines) (cudie, &lines, &nlines);
      58                 :            :     }
      59         [ #  # ]:          0 :   else if (cu->files != (void *) -1l)
      60                 :            :     /* We already have the information.  */
      61                 :          0 :     res = 0;
      62                 :            : 
      63         [ +  - ]:      14036 :   if (likely (res == 0))
      64                 :            :     {
      65         [ -  + ]:      14036 :       assert (cu->files != NULL && cu->files != (void *) -1l);
      66                 :      14036 :       *files = cu->files;
      67         [ +  + ]:      14036 :       if (nfiles != NULL)
      68                 :      14034 :         *nfiles = cu->files->nfiles;
      69                 :            :     }
      70                 :            : 
      71                 :            :   // XXX Eventually: unlocking here.
      72                 :            : 
      73                 :      14036 :   return res;
      74                 :            : }
      75                 :            : INTDEF (dwarf_getsrcfiles)