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