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                 :     638580 : dwarf_die_addr_die (Dwarf *dbg, void *addr, Dwarf_Die *result)
      41                 :            : {
      42         [ -  + ]:     638580 :   if (dbg == NULL)
      43                 :            :     return NULL;
      44                 :            : 
      45                 :     638580 :   Dwarf_CU *cu = __libdw_findcu_addr (dbg, addr);
      46                 :            : 
      47         [ +  + ]:     638580 :   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         [ +  + ]:        163 :   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         [ -  + ]:     638565 :   if (cu == NULL)
      62                 :            :     {
      63                 :          0 :       memset (result, '\0', sizeof (Dwarf_Die));
      64                 :          0 :       return NULL;
      65                 :            :     }
      66                 :            : 
      67                 :     638580 :   *result = (Dwarf_Die) { .addr = addr, .cu = cu };
      68                 :            : 
      69                 :     638580 :   return result;
      70                 :            : }