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75 lines
1.9 KiB
75 lines
1.9 KiB
4 months ago
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/* Return scope DIEs containing given DIE.
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Copyright (C) 2005, 2015 Red Hat, Inc.
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This file is part of elfutils.
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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 "libdwP.h"
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#include <assert.h>
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#include <stdlib.h>
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static int
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scope_visitor (unsigned int depth, struct Dwarf_Die_Chain *die, void *arg)
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{
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if (die->die.addr != *(void **) arg)
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return 0;
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Dwarf_Die *scopes = malloc (depth * sizeof scopes[0]);
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if (scopes == NULL)
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{
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__libdw_seterrno (DWARF_E_NOMEM);
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return -1;
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}
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unsigned int i = 0;
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do
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{
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scopes[i++] = die->die;
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die = die->parent;
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}
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while (die != NULL);
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assert (i == depth);
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*(void **) arg = scopes;
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return depth;
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}
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int
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dwarf_getscopes_die (Dwarf_Die *die, Dwarf_Die **scopes)
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{
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if (die == NULL)
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return -1;
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struct Dwarf_Die_Chain cu = { .die = CUDIE (die->cu), .parent = NULL };
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void *info = die->addr;
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int result = __libdw_visit_scopes (1, &cu, NULL, &scope_visitor, NULL, &info);
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if (result > 0)
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*scopes = info;
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return result;
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}
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