external/bsd/elftoolchain/dist/libdwarf/dwarf_seterror.c

   1 /*      $NetBSD: dwarf_seterror.c,v 1.2 2014/03/09 16:58:04 christos Exp $      */
   2
   3 /*-
   4  * Copyright (c) 2010 Joseph Koshy
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include "_libdwarf.h"
  30
  31 __RCSID("$NetBSD: dwarf_seterror.c,v 1.2 2014/03/09 16:58:04 christos Exp $");
  32 ELFTC_VCSID("Id: dwarf_seterror.c 2075 2011-10-27 03:47:28Z jkoshy ");
  33
  34 #define _SET_FIELD(R, F, V)                                     \
  35         do {                                                    \
  36                 (R) = (F);                                      \
  37                 (F) = (V);                                      \
  38         } while (0)
  39
  40 #define SET_FIELD(D, R, F)                                      \
  41         do {                                                    \
  42                 if (D)                                          \
  43                         _SET_FIELD(R, (D)->dbg_##F, F);         \
  44                 else                                            \
  45                         _SET_FIELD(R, _libdwarf.F, F);          \
  46         } while (0)
  47
  48 Dwarf_Handler
  49 dwarf_seterrhand(Dwarf_Debug dbg, Dwarf_Handler errhand)
  50 {
  51         Dwarf_Handler oldhandler;
  52
  53         SET_FIELD(dbg, oldhandler, errhand);
  54
  55         return (oldhandler);
  56 }
  57
  58 Dwarf_Ptr
  59 dwarf_seterrarg(Dwarf_Debug dbg, Dwarf_Ptr errarg)
  60 {
  61         Dwarf_Ptr oldarg;
  62
  63         SET_FIELD(dbg, oldarg, errarg);
  64
  65         return (oldarg);
  66 }