dwarf_seterror.c revision 303975
1/*- 2 * Copyright (c) 2010 Joseph Koshy 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include "_libdwarf.h" 28 29ELFTC_VCSID("$Id: dwarf_seterror.c 2075 2011-10-27 03:47:28Z jkoshy $"); 30 31#define _SET_FIELD(R, F, V) \ 32 do { \ 33 (R) = (F); \ 34 (F) = (V); \ 35 } while (0) 36 37#define SET_FIELD(D, R, F) \ 38 do { \ 39 if (D) \ 40 _SET_FIELD(R, (D)->dbg_##F, F); \ 41 else \ 42 _SET_FIELD(R, _libdwarf.F, F); \ 43 } while (0) 44 45Dwarf_Handler 46dwarf_seterrhand(Dwarf_Debug dbg, Dwarf_Handler errhand) 47{ 48 Dwarf_Handler oldhandler; 49 50 SET_FIELD(dbg, oldhandler, errhand); 51 52 return (oldhandler); 53} 54 55Dwarf_Ptr 56dwarf_seterrarg(Dwarf_Debug dbg, Dwarf_Ptr errarg) 57{ 58 Dwarf_Ptr oldarg; 59 60 SET_FIELD(dbg, oldarg, errarg); 61 62 return (oldarg); 63} 64