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78 lines
2.2 KiB
78 lines
2.2 KiB
/* Check whether given DIE has specific attribute.
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Copyright (C) 2003, 2005, 2014, 2017 Red Hat, Inc.
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This file is part of elfutils.
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Written by Ulrich Drepper <drepper@redhat.com>, 2003.
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This file is free software; you can redistribute it and/or modify
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it under the terms of either
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at
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your option) any later version
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at
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your option) any later version
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or both in parallel, as here.
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elfutils is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see <http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <dwarf.h>
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#include "libdwP.h"
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int
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dwarf_hasattr (Dwarf_Die *die, unsigned int search_name)
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{
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if (die == NULL)
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return 0;
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/* Find the abbreviation entry. */
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Dwarf_Abbrev *abbrevp = __libdw_dieabbrev (die, NULL);
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if (unlikely (abbrevp == DWARF_END_ABBREV))
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{
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__libdw_seterrno (DWARF_E_INVALID_DWARF);
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return 0;
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}
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/* Search the name attribute. Dwarf_Abbrev was checked when created,
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so we can read unchecked here. */
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const unsigned char *attrp = abbrevp->attrp;
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while (1)
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{
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/* Get attribute name and form. */
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unsigned int attr_name;
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get_uleb128_unchecked (attr_name, attrp);
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unsigned int attr_form;
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get_uleb128_unchecked (attr_form, attrp);
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/* We can stop if we found the end of the attribute list. */
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if (attr_name == 0 && attr_form == 0)
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return 0;
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if (attr_name == search_name)
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return 1;
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if (attr_form == DW_FORM_implicit_const)
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{
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int64_t attr_value __attribute__ ((unused));
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get_sleb128_unchecked (attr_value, attrp);
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}
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}
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}
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INTDEF (dwarf_hasattr)
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