93 lines
2.6 KiB
C
93 lines
2.6 KiB
C
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/*-
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* Copyright (c) 2007 John Birrell (jb@freebsd.org)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "_libdwarf.h"
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int
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dwarf_attr(Dwarf_Die die, Dwarf_Half attr, Dwarf_Attribute *atp, Dwarf_Error *err)
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{
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Dwarf_Attribute at;
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Dwarf_Abbrev a;
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int ret = DWARF_E_NONE;
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if (err == NULL)
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return DWARF_E_ERROR;
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if (die == NULL || atp == NULL || (a = die->die_a) == NULL) {
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DWARF_SET_ERROR(err, DWARF_E_ARGUMENT);
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return DWARF_E_ARGUMENT;
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}
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STAILQ_FOREACH(at, &a->a_attrib, at_next)
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if (at->at_attrib == attr)
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break;
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*atp = at;
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if (at == NULL) {
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DWARF_SET_ERROR(err, DWARF_E_NO_ENTRY);
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ret = DWARF_E_NO_ENTRY;
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}
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return ret;
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}
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int
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dwarf_attr_add(Dwarf_Abbrev a, uint64_t attr, uint64_t form, Dwarf_Attribute *atp, Dwarf_Error *error)
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{
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Dwarf_Attribute at;
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int ret = DWARF_E_NONE;
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if (error == NULL)
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return DWARF_E_ERROR;
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if (a == NULL) {
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DWARF_SET_ERROR(error, DWARF_E_ARGUMENT);
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return DWARF_E_ARGUMENT;
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}
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if ((at = malloc(sizeof(struct _Dwarf_Attribute))) == NULL) {
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DWARF_SET_ERROR(error, DWARF_E_MEMORY);
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return DWARF_E_MEMORY;
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}
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/* Initialise the attribute structure. */
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at->at_attrib = attr;
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at->at_form = form;
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/* Add the attribute to the list in the abbrev. */
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STAILQ_INSERT_TAIL(&a->a_attrib, at, at_next);
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if (atp != NULL)
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*atp = at;
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return ret;
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}
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