Roland McGrath | 71e15a0 | 2005-08-27 10:33:26 +0000 | [diff] [blame] | 1 | /* Return scope DIEs containing given DIE. |
| 2 | Copyright (C) 2005 Red Hat, Inc. |
Mark Wielaard | de2ed97 | 2012-06-05 17:15:16 +0200 | [diff] [blame] | 3 | This file is part of elfutils. |
Roland McGrath | 71e15a0 | 2005-08-27 10:33:26 +0000 | [diff] [blame] | 4 | |
Mark Wielaard | de2ed97 | 2012-06-05 17:15:16 +0200 | [diff] [blame] | 5 | This file is free software; you can redistribute it and/or modify |
| 6 | it under the terms of either |
Roland McGrath | 71e15a0 | 2005-08-27 10:33:26 +0000 | [diff] [blame] | 7 | |
Mark Wielaard | de2ed97 | 2012-06-05 17:15:16 +0200 | [diff] [blame] | 8 | * the GNU Lesser General Public License as published by the Free |
| 9 | Software Foundation; either version 3 of the License, or (at |
| 10 | your option) any later version |
| 11 | |
| 12 | or |
| 13 | |
| 14 | * the GNU General Public License as published by the Free |
| 15 | Software Foundation; either version 2 of the License, or (at |
| 16 | your option) any later version |
| 17 | |
| 18 | or both in parallel, as here. |
| 19 | |
| 20 | elfutils is distributed in the hope that it will be useful, but |
Ulrich Drepper | 361df7d | 2006-04-04 21:38:57 +0000 | [diff] [blame] | 21 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 23 | General Public License for more details. |
| 24 | |
Mark Wielaard | de2ed97 | 2012-06-05 17:15:16 +0200 | [diff] [blame] | 25 | You should have received copies of the GNU General Public License and |
| 26 | the GNU Lesser General Public License along with this program. If |
| 27 | not, see <http://www.gnu.org/licenses/>. */ |
Roland McGrath | 71e15a0 | 2005-08-27 10:33:26 +0000 | [diff] [blame] | 28 | |
| 29 | #ifdef HAVE_CONFIG_H |
| 30 | # include <config.h> |
| 31 | #endif |
| 32 | #include "libdwP.h" |
| 33 | #include <assert.h> |
| 34 | #include <stdlib.h> |
| 35 | |
| 36 | static int |
| 37 | scope_visitor (unsigned int depth, struct Dwarf_Die_Chain *die, void *arg) |
| 38 | { |
| 39 | if (die->die.addr != *(void **) arg) |
| 40 | return 0; |
| 41 | |
| 42 | Dwarf_Die *scopes = malloc (depth * sizeof scopes[0]); |
| 43 | if (scopes == NULL) |
| 44 | { |
| 45 | __libdw_seterrno (DWARF_E_NOMEM); |
| 46 | return -1; |
| 47 | } |
| 48 | |
| 49 | unsigned int i = 0; |
| 50 | do |
| 51 | { |
| 52 | scopes[i++] = die->die; |
| 53 | die = die->parent; |
| 54 | } |
| 55 | while (die != NULL); |
| 56 | assert (i == depth); |
| 57 | |
| 58 | *(void **) arg = scopes; |
| 59 | return depth; |
| 60 | } |
| 61 | |
| 62 | int |
| 63 | dwarf_getscopes_die (Dwarf_Die *die, Dwarf_Die **scopes) |
| 64 | { |
| 65 | if (die == NULL) |
| 66 | return -1; |
| 67 | |
Roland McGrath | 6724c90 | 2005-10-28 07:07:19 +0000 | [diff] [blame] | 68 | struct Dwarf_Die_Chain cu = { .die = CUDIE (die->cu), .parent = NULL }; |
Roland McGrath | 71e15a0 | 2005-08-27 10:33:26 +0000 | [diff] [blame] | 69 | void *info = die->addr; |
| 70 | int result = __libdw_visit_scopes (1, &cu, &scope_visitor, NULL, &info); |
| 71 | if (result > 0) |
| 72 | *scopes = info; |
| 73 | return result; |
| 74 | } |