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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                 :      30382 : dwfl_module_return_value_location (Dwfl_Module *mod, Dwarf_Die *functypedie,
      38                 :            :                                    const Dwarf_Op **locops)
      39                 :            : {
      40         [ -  + ]:      30382 :   if (mod == NULL)
      41                 :            :     return -1;
      42                 :            : 
      43         [ +  + ]:      30382 :   if (mod->ebl == NULL)
      44                 :            :     {
      45                 :         20 :       Dwfl_Error error = __libdwfl_module_getebl (mod);
      46         [ -  + ]:         20 :       if (error != DWFL_E_NOERROR)
      47                 :            :         {
      48                 :          0 :           __libdwfl_seterrno (error);
      49                 :          0 :           return -1;
      50                 :            :         }
      51                 :            :     }
      52                 :            : 
      53                 :      30382 :   int nops = ebl_return_value_location (mod->ebl, functypedie, locops);
      54         [ -  + ]:      30382 :   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                 :            : }