Branch data     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                 :     1393678 : dwarf_die_addr_die (Dwarf *dbg, void *addr, Dwarf_Die *result)
      41                 :             : {
      42         [ -  + ]:     1393678 :   if (dbg == NULL)
      43                 :             :     return NULL;
      44                 :             : 
      45                 :     1393678 :   Dwarf_CU *cu = __libdw_findcu_addr (dbg, addr);
      46                 :             : 
      47         [ +  + ]:     1393678 :   if (cu == NULL)
      48                 :             :     {
      49                 :         326 :       Dwarf *alt = INTUSE (dwarf_getalt) (dbg);
      50         [ +  + ]:         326 :       if (alt != NULL)
      51                 :          30 :         cu = __libdw_findcu_addr (alt, addr);
      52                 :             :     }
      53                 :             : 
      54         [ +  + ]:         326 :   if (cu == NULL)
      55                 :             :     {
      56                 :         296 :       Dwarf *split = __libdw_find_split_dbg_addr (dbg, addr);
      57         [ +  - ]:         296 :       if (split != NULL)
      58                 :         296 :         cu = __libdw_findcu_addr (split, addr);
      59                 :             :     }
      60                 :             : 
      61         [ -  + ]:     1393648 :   if (cu == NULL)
      62                 :             :     {
      63                 :           0 :       memset (result, '\0', sizeof (Dwarf_Die));
      64                 :           0 :       return NULL;
      65                 :             :     }
      66                 :             : 
      67                 :     1393678 :   *result = (Dwarf_Die) { .addr = addr, .cu = cu };
      68                 :             : 
      69                 :     1393678 :   return result;
      70                 :             : }