Line data    Source code

       1             : /* Return offset of DIE.
       2             :    Copyright (C) 2018 Red Hat, Inc.
       3             :    This file is part of elfutils.
       4             : 
       5             :    This file is free software; you can redistribute it and/or modify
       6             :    it under the terms of either
       7             : 
       8             :      * the GNU Lesser General Public License as published by the Free
       9             :        Software Foundation; either version 3 of the License, or (at
      10             :        your option) any later version
      11             : 
      12             :    or
      13             : 
      14             :      * the GNU General Public License as published by the Free
      15             :        Software Foundation; either version 2 of the License, or (at
      16             :        your option) any later version
      17             : 
      18             :    or both in parallel, as here.
      19             : 
      20             :    elfutils is distributed in the hope that it will be useful, but
      21             :    WITHOUT ANY WARRANTY; without even the implied warranty of
      22             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      23             :    General Public License for more details.
      24             : 
      25             :    You should have received copies of the GNU General Public License and
      26             :    the GNU Lesser General Public License along with this program.  If
      27             :    not, see <http://www.gnu.org/licenses/>.  */
      28             : 
      29             : #ifdef HAVE_CONFIG_H
      30             : # include <config.h>
      31             : #endif
      32             : 
      33             : #include <string.h>
      34             : 
      35             : #include <dwarf.h>
      36             : #include "libdwP.h"
      37             : 
      38             : 
      39             : Dwarf_Die *
      40      666003 : dwarf_die_addr_die (Dwarf *dbg, void *addr, Dwarf_Die *result)
      41             : {
      42      666003 :   if (dbg == NULL)
      43             :     return NULL;
      44             : 
      45      666003 :   Dwarf_CU *cu = __libdw_findcu_addr (dbg, addr);
      46             : 
      47      666003 :   if (cu == NULL)
      48             :     {
      49         163 :       Dwarf *alt = INTUSE (dwarf_getalt) (dbg);
      50         163 :       if (alt != NULL)
      51          15 :         cu = __libdw_findcu_addr (alt, addr);
      52             :     }
      53             : 
      54      666003 :   if (cu == NULL)
      55             :     {
      56         148 :       Dwarf *split = __libdw_find_split_dbg_addr (dbg, addr);
      57         148 :       if (split != NULL)
      58         148 :         cu = __libdw_findcu_addr (split, addr);
      59             :     }
      60             : 
      61      666003 :   if (cu == NULL)
      62             :     {
      63           0 :       memset (result, '\0', sizeof (Dwarf_Die));
      64           0 :       return NULL;
      65             :     }
      66             : 
      67      666003 :   *result = (Dwarf_Die) { .addr = addr, .cu = cu };
      68             : 
      69      666003 :   return result;
      70             : }