Line data Source code
1 : /* Convenience functions for handling DWARF descriptions of inline functions.
2 : Copyright (C) 2005,2006,2015 Red Hat, Inc.
3 : This file is part of elfutils.
4 :
5 : This file is free software; you can redistribute it and/or modify
6 : it under the terms of either
7 :
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
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 :
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/>. */
28 :
29 : #ifdef HAVE_CONFIG_H
30 : # include <config.h>
31 : #endif
32 :
33 : #include "libdwP.h"
34 : #include <dwarf.h>
35 :
36 : struct visitor_info
37 : {
38 : void *die_addr;
39 : int (*callback) (Dwarf_Die *, void *);
40 : void *arg;
41 : };
42 :
43 : static int
44 3551073 : scope_visitor (unsigned int depth __attribute__ ((unused)),
45 : struct Dwarf_Die_Chain *die, void *arg)
46 : {
47 3551073 : struct visitor_info *const v = arg;
48 :
49 3551073 : if (INTUSE(dwarf_tag) (&die->die) != DW_TAG_inlined_subroutine)
50 : return DWARF_CB_OK;
51 :
52 : Dwarf_Attribute attr_mem;
53 280188 : Dwarf_Attribute *attr = INTUSE(dwarf_attr) (&die->die, DW_AT_abstract_origin,
54 : &attr_mem);
55 280188 : if (attr == NULL)
56 : return DWARF_CB_OK;
57 :
58 : Dwarf_Die origin_mem;
59 280188 : Dwarf_Die *origin = INTUSE(dwarf_formref_die) (attr, &origin_mem);
60 280188 : if (origin == NULL)
61 : return DWARF_CB_ABORT;
62 :
63 280188 : if (origin->addr != v->die_addr)
64 : return DWARF_CB_OK;
65 :
66 8251 : return (*v->callback) (&die->die, v->arg);
67 : }
68 :
69 : int
70 4781 : dwarf_func_inline (Dwarf_Die *func)
71 : {
72 : Dwarf_Attribute attr_mem;
73 : Dwarf_Word val;
74 4781 : if (INTUSE(dwarf_formudata) (INTUSE(dwarf_attr) (func, DW_AT_inline,
75 : &attr_mem),
76 : &val) == 0)
77 2405 : switch (val)
78 : {
79 : case DW_INL_not_inlined:
80 : return 0;
81 :
82 11 : case DW_INL_declared_not_inlined:
83 11 : return -1;
84 :
85 2392 : case DW_INL_inlined:
86 : case DW_INL_declared_inlined:
87 2392 : return 1;
88 : }
89 :
90 : return 0;
91 : }
92 :
93 : int
94 2389 : dwarf_func_inline_instances (Dwarf_Die *func,
95 : int (*callback) (Dwarf_Die *, void *),
96 : void *arg)
97 : {
98 2389 : struct visitor_info v = { func->addr, callback, arg };
99 4778 : struct Dwarf_Die_Chain cu = { .die = CUDIE (func->cu), .parent = NULL };
100 2389 : return __libdw_visit_scopes (0, &cu, NULL, &scope_visitor, NULL, &v);
101 : }
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