Line data    Source code

       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             : const char *
      40          30 : dwarf_decl_file (Dwarf_Die *die)
      41             : {
      42             :   Dwarf_Attribute attr_mem;
      43          30 :   Dwarf_Word idx = 0;
      44             : 
      45          30 :   if (INTUSE(dwarf_formudata) (INTUSE(dwarf_attr_integrate)
      46             :                                (die, DW_AT_decl_file, &attr_mem),
      47             :                                &idx) != 0)
      48             :     return NULL;
      49             : 
      50             :   /* Zero means no source file information available.  */
      51          30 :   if (idx == 0)
      52             :     {
      53           0 :       __libdw_seterrno (DWARF_E_NO_ENTRY);
      54           0 :       return NULL;
      55             :     }
      56             : 
      57             :   /* Get the array of source files for the CU.  */
      58          30 :   struct Dwarf_CU *cu = die->cu;
      59          30 :   if (cu->lines == NULL)
      60             :     {
      61             :       Dwarf_Lines *lines;
      62             :       size_t nlines;
      63             : 
      64             :       /* Let the more generic function do the work.  It'll create more
      65             :          data but that will be needed in an real program anyway.  */
      66          32 :       (void) INTUSE(dwarf_getsrclines) (&CUDIE (cu), &lines, &nlines);
      67          16 :       assert (cu->lines != NULL);
      68             :     }
      69             : 
      70          30 :   if (cu->lines == (void *) -1l)
      71             :     {
      72             :       /* If the file index is not zero, there must be file information
      73             :          available.  */
      74           0 :       __libdw_seterrno (DWARF_E_INVALID_DWARF);
      75           0 :       return NULL;
      76             :     }
      77             : 
      78          30 :   assert (cu->files != NULL && cu->files != (void *) -1l);
      79             : 
      80          30 :   if (idx >= cu->files->nfiles)
      81             :     {
      82           0 :       __libdw_seterrno (DWARF_E_INVALID_DWARF);
      83           0 :       return NULL;
      84             :     }
      85             : 
      86          30 :   return cu->files->info[idx].name;
      87             : }
      88             : OLD_VERSION (dwarf_decl_file, ELFUTILS_0.122)
      89             : NEW_VERSION (dwarf_decl_file, ELFUTILS_0.143)