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       1                 :            : /* Return scope DIEs containing given DIE.
       2                 :            :    Copyright (C) 2005 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                 :            : #include "libdwP.h"
      33                 :            : #include <assert.h>
      34                 :            : #include <stdlib.h>
      35                 :            : 
      36                 :            : static int
      37                 :          6 : scope_visitor (unsigned int depth, struct Dwarf_Die_Chain *die, void *arg)
      38                 :            : {
      39         [ +  + ]:          6 :   if (die->die.addr != *(void **) arg)
      40                 :            :     return 0;
      41                 :            : 
      42                 :          1 :   Dwarf_Die *scopes = malloc (depth * sizeof scopes[0]);
      43         [ -  + ]:          1 :   if (scopes == NULL)
      44                 :            :     {
      45                 :          0 :       __libdw_seterrno (DWARF_E_NOMEM);
      46                 :          1 :       return -1;
      47                 :            :     }
      48                 :            : 
      49                 :            :   unsigned int i = 0;
      50                 :            :   do
      51                 :            :     {
      52                 :          2 :       scopes[i++] = die->die;
      53                 :          2 :       die = die->parent;
      54                 :            :     }
      55         [ +  + ]:          2 :   while (die != NULL);
      56         [ -  + ]:          1 :   assert (i == depth);
      57                 :            : 
      58                 :          1 :   *(void **) arg = scopes;
      59                 :          6 :   return depth;
      60                 :            : }
      61                 :            : 
      62                 :            : int
      63                 :          1 : dwarf_getscopes_die (Dwarf_Die *die, Dwarf_Die **scopes)
      64                 :            : {
      65         [ +  - ]:          1 :   if (die == NULL)
      66                 :            :     return -1;
      67                 :            : 
      68         [ -  + ]:          1 :   struct Dwarf_Die_Chain cu = { .die = CUDIE (die->cu), .parent = NULL };
      69                 :          1 :   void *info = die->addr;
      70                 :          1 :   int result = __libdw_visit_scopes (1, &cu, &scope_visitor, NULL, &info);
      71         [ +  - ]:          1 :   if (result > 0)
      72                 :          1 :     *scopes = info;
      73                 :            :   return result;
      74                 :          1 : }