Line data    Source code

       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        9898 : dwfl_module_return_value_location (Dwfl_Module *mod, Dwarf_Die *functypedie,
      38             :                                    const Dwarf_Op **locops)
      39             : {
      40        9898 :   if (mod == NULL)
      41             :     return -1;
      42             : 
      43        9898 :   if (mod->ebl == NULL)
      44             :     {
      45           7 :       Dwfl_Error error = __libdwfl_module_getebl (mod);
      46           7 :       if (error != DWFL_E_NOERROR)
      47             :         {
      48           0 :           __libdwfl_seterrno (error);
      49           0 :           return -1;
      50             :         }
      51             :     }
      52             : 
      53        9898 :   int nops = ebl_return_value_location (mod->ebl, functypedie, locops);
      54        9898 :   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             : }