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      1 /*	$NetBSD: dwarf_pro_die.c,v 1.5 2024/03/03 17:37:32 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2009 Kai Wang
      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_pro_die.c,v 1.5 2024/03/03 17:37:32 christos Exp $");
     32 ELFTC_VCSID("Id: dwarf_pro_die.c 2074 2011-10-27 03:34:33Z jkoshy");
     33 
     34 Dwarf_Unsigned
     35 dwarf_add_die_to_debug(Dwarf_P_Debug dbg, Dwarf_P_Die first_die,
     36     Dwarf_Error *error)
     37 {
     38 
     39 	if (dbg == NULL || first_die == NULL) {
     40 		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
     41 		return (DW_DLV_NOCOUNT);
     42 	}
     43 
     44 	dbg->dbgp_root_die = first_die;
     45 
     46 	return (DW_DLV_OK);
     47 }
     48 
     49 Dwarf_P_Die
     50 dwarf_new_die(Dwarf_P_Debug dbg, Dwarf_Tag new_tag,
     51     Dwarf_P_Die parent, Dwarf_P_Die child, Dwarf_P_Die left_sibling,
     52     Dwarf_P_Die right_sibling, Dwarf_Error *error)
     53 {
     54 	Dwarf_P_Die die;
     55 	int count;
     56 
     57 	if (dbg == NULL) {
     58 		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
     59 		return (DW_DLV_BADADDR);
     60 	}
     61 
     62 	count = _dwarf_die_count_links(parent, child, left_sibling,
     63 	    right_sibling);
     64 
     65 	if (count > 1) {
     66 		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
     67 		return (DW_DLV_BADADDR);
     68 	}
     69 
     70 	if (_dwarf_die_alloc(dbg, &die, error) != DW_DLE_NONE)
     71 		return (DW_DLV_BADADDR);
     72 
     73 	die->die_dbg = dbg;
     74 	die->die_tag = new_tag;
     75 
     76 	STAILQ_INSERT_TAIL(&dbg->dbgp_dielist, die, die_pro_next);
     77 
     78 	if (count == 0)
     79 		return (die);
     80 
     81 	_dwarf_die_link(die, parent, child, left_sibling, right_sibling);
     82 
     83 	return (die);
     84 }
     85 
     86 Dwarf_P_Die
     87 dwarf_die_link(Dwarf_P_Die die, Dwarf_P_Die parent,
     88     Dwarf_P_Die child, Dwarf_P_Die left_sibling, Dwarf_P_Die right_sibling,
     89     Dwarf_Error *error)
     90 {
     91 	Dwarf_Debug dbg;
     92 	int count;
     93 
     94 
     95 	if (die == NULL) {
     96 		DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
     97 		return (DW_DLV_BADADDR);
     98 	}
     99 
    100 	dbg = die->die_dbg;
    101 	count = _dwarf_die_count_links(parent, child, left_sibling,
    102 	    right_sibling);
    103 
    104 	if (count > 1) {
    105 		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
    106 		return (DW_DLV_BADADDR);
    107 	} else if (count == 0)
    108 		return (die);
    109 
    110 	_dwarf_die_link(die, parent, child, left_sibling, right_sibling);
    111 
    112 	return (die);
    113 }
    114