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       1                 :             : /* Return location expression to find return value given a function type DIE.
       2                 :             :    Copyright (C) 2005, 2006 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 "libdwflP.h"
      34                 :             : 
      35                 :             : 
      36                 :             : int
      37                 :        6190 : dwfl_module_return_value_location (Dwfl_Module *mod, Dwarf_Die *functypedie,
      38                 :             :                                    const Dwarf_Op **locops)
      39                 :             : {
      40         [ +  - ]:        6190 :   if (mod == NULL)
      41                 :             :     return -1;
      42                 :             : 
      43         [ +  + ]:        6190 :   if (mod->ebl == NULL)
      44                 :             :     {
      45                 :          16 :       Dwfl_Error error = __libdwfl_module_getebl (mod);
      46         [ -  + ]:          16 :       if (error != DWFL_E_NOERROR)
      47                 :             :         {
      48                 :           0 :           __libdwfl_seterrno (error);
      49                 :           0 :           return -1;
      50                 :             :         }
      51                 :             :     }
      52                 :             : 
      53                 :        6190 :   int nops = ebl_return_value_location (mod->ebl, functypedie, locops);
      54         [ -  + ]:        6190 :   if (unlikely (nops < 0))
      55                 :             :     {
      56         [ #  # ]:           0 :       if (nops == -1)
      57                 :           0 :         __libdwfl_seterrno (DWFL_E_LIBDW);
      58         [ #  # ]:           0 :       else if (nops == -2)
      59                 :           0 :         __libdwfl_seterrno (DWFL_E_WEIRD_TYPE);
      60                 :             :       else
      61                 :           0 :         __libdwfl_seterrno (DWFL_E_LIBEBL);
      62                 :             :       nops = -1;
      63                 :             :     }
      64                 :             : 
      65                 :             :   return nops;
      66                 :             : }