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       1                 :            : /* Return file name containing definition of the given function.
       2                 :            :    Copyright (C) 2005, 2009 Red Hat, Inc.
       3                 :            :    This file is part of elfutils.
       4                 :            :    Written by Ulrich Drepper <drepper@redhat.com>, 2005.
       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                 :            : NEW_VERSION (dwarf_decl_file, ELFUTILS_0.143)
      40                 :            : const char *
      41                 :         40 : dwarf_decl_file (Dwarf_Die *die)
      42                 :            : {
      43                 :         40 :   Dwarf_Attribute attr_mem;
      44                 :         40 :   Dwarf_Word idx = 0;
      45                 :            : 
      46         [ +  - ]:         40 :   if (INTUSE(dwarf_formudata) (INTUSE(dwarf_attr_integrate)
      47                 :            :                                (die, DW_AT_decl_file, &attr_mem),
      48                 :            :                                &idx) != 0)
      49                 :            :     return NULL;
      50                 :            : 
      51                 :            :   /* Zero means no source file information available.  */
      52         [ -  + ]:         40 :   if (idx == 0)
      53                 :            :     {
      54                 :          0 :       __libdw_seterrno (DWARF_E_NO_ENTRY);
      55                 :          0 :       return NULL;
      56                 :            :     }
      57                 :            : 
      58                 :            :   /* Get the array of source files for the CU.  */
      59                 :         40 :   struct Dwarf_CU *cu = attr_mem.cu;
      60         [ +  + ]:         40 :   if (cu->lines == NULL)
      61                 :            :     {
      62                 :         22 :       Dwarf_Lines *lines;
      63                 :         22 :       size_t nlines;
      64                 :            : 
      65                 :            :       /* Let the more generic function do the work.  It'll create more
      66                 :            :          data but that will be needed in an real program anyway.  */
      67                 :         22 :       (void) INTUSE(dwarf_getsrclines) (&CUDIE (cu), &lines, &nlines);
      68         [ -  + ]:         22 :       assert (cu->lines != NULL);
      69                 :            :     }
      70                 :            : 
      71         [ -  + ]:         40 :   if (cu->lines == (void *) -1l)
      72                 :            :     {
      73                 :            :       /* If the file index is not zero, there must be file information
      74                 :            :          available.  */
      75                 :          0 :       __libdw_seterrno (DWARF_E_INVALID_DWARF);
      76                 :          0 :       return NULL;
      77                 :            :     }
      78                 :            : 
      79         [ -  + ]:         40 :   assert (cu->files != NULL && cu->files != (void *) -1l);
      80                 :            : 
      81         [ -  + ]:         40 :   if (idx >= cu->files->nfiles)
      82                 :            :     {
      83                 :          0 :       __libdw_seterrno (DWARF_E_INVALID_DWARF);
      84                 :          0 :       return NULL;
      85                 :            :     }
      86                 :            : 
      87                 :         40 :   return cu->files->info[idx].name;
      88                 :            : }
      89                 :            : OLD_VERSION (dwarf_decl_file, ELFUTILS_0.122)