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1#ifndef _DWARF_AUX_H
2#define _DWARF_AUX_H
3/*
4 * dwarf-aux.h : libdw auxiliary interfaces
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 *
20 */
21
22#include <dwarf.h>
23#include <elfutils/libdw.h>
24#include <elfutils/libdwfl.h>
25#include <elfutils/version.h>
26
27/* Find the realpath of the target file */
28const char *cu_find_realpath(Dwarf_Die *cu_die, const char *fname);
29
30/* Get DW_AT_comp_dir (should be NULL with older gcc) */
31const char *cu_get_comp_dir(Dwarf_Die *cu_die);
32
33/* Get a line number and file name for given address */
34int cu_find_lineinfo(Dwarf_Die *cudie, unsigned long addr,
35 const char **fname, int *lineno);
36
37/* Walk on funcitons at given address */
38int cu_walk_functions_at(Dwarf_Die *cu_die, Dwarf_Addr addr,
39 int (*callback)(Dwarf_Die *, void *), void *data);
40
41/* Get DW_AT_linkage_name (should be NULL for C binary) */
42const char *die_get_linkage_name(Dwarf_Die *dw_die);
43
44/* Ensure that this DIE is a subprogram and definition (not declaration) */
45bool die_is_func_def(Dwarf_Die *dw_die);
46
47/* Ensure that this DIE is an instance of a subprogram */
48bool die_is_func_instance(Dwarf_Die *dw_die);
49
50/* Compare diename and tname */
51bool die_compare_name(Dwarf_Die *dw_die, const char *tname);
52
53/* Matching diename with glob pattern */
54bool die_match_name(Dwarf_Die *dw_die, const char *glob);
55
56/* Get callsite line number of inline-function instance */
57int die_get_call_lineno(Dwarf_Die *in_die);
58
59/* Get callsite file name of inlined function instance */
60const char *die_get_call_file(Dwarf_Die *in_die);
61
62/* Get type die */
63Dwarf_Die *die_get_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem);
64
65/* Get a type die, but skip qualifiers and typedef */
66Dwarf_Die *die_get_real_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem);
67
68/* Check whether the DIE is signed or not */
69bool die_is_signed_type(Dwarf_Die *tp_die);
70
71/* Get data_member_location offset */
72int die_get_data_member_location(Dwarf_Die *mb_die, Dwarf_Word *offs);
73
74/* Return values for die_find_child() callbacks */
75enum {
76 DIE_FIND_CB_END = 0, /* End of Search */
77 DIE_FIND_CB_CHILD = 1, /* Search only children */
78 DIE_FIND_CB_SIBLING = 2, /* Search only siblings */
79 DIE_FIND_CB_CONTINUE = 3, /* Search children and siblings */
80};
81
82/* Search child DIEs */
83Dwarf_Die *die_find_child(Dwarf_Die *rt_die,
84 int (*callback)(Dwarf_Die *, void *),
85 void *data, Dwarf_Die *die_mem);
86
87/* Search a non-inlined function including given address */
88Dwarf_Die *die_find_realfunc(Dwarf_Die *cu_die, Dwarf_Addr addr,
89 Dwarf_Die *die_mem);
90
91/* Search a non-inlined function with tail call at given address */
92Dwarf_Die *die_find_tailfunc(Dwarf_Die *cu_die, Dwarf_Addr addr,
93 Dwarf_Die *die_mem);
94
95/* Search the top inlined function including given address */
96Dwarf_Die *die_find_top_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr,
97 Dwarf_Die *die_mem);
98
99/* Search the deepest inlined function including given address */
100Dwarf_Die *die_find_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr,
101 Dwarf_Die *die_mem);
102
103/* Walk on the instances of given DIE */
104int die_walk_instances(Dwarf_Die *in_die,
105 int (*callback)(Dwarf_Die *, void *), void *data);
106
107/* Walker on lines (Note: line number will not be sorted) */
108typedef int (* line_walk_callback_t) (const char *fname, int lineno,
109 Dwarf_Addr addr, void *data);
110
111/*
112 * Walk on lines inside given DIE. If the DIE is a subprogram, walk only on
113 * the lines inside the subprogram, otherwise the DIE must be a CU DIE.
114 */
115int die_walk_lines(Dwarf_Die *rt_die, line_walk_callback_t callback, void *data);
116
117/* Find a variable called 'name' at given address */
118Dwarf_Die *die_find_variable_at(Dwarf_Die *sp_die, const char *name,
119 Dwarf_Addr addr, Dwarf_Die *die_mem);
120
121/* Find a member called 'name' */
122Dwarf_Die *die_find_member(Dwarf_Die *st_die, const char *name,
123 Dwarf_Die *die_mem);
124
125/* Get the name of given variable DIE */
126int die_get_typename(Dwarf_Die *vr_die, struct strbuf *buf);
127
128/* Get the name and type of given variable DIE, stored as "type\tname" */
129int die_get_varname(Dwarf_Die *vr_die, struct strbuf *buf);
130int die_get_var_range(Dwarf_Die *sp_die, Dwarf_Die *vr_die, struct strbuf *buf);
131
132/* Check if target program is compiled with optimization */
133bool die_is_optimized_target(Dwarf_Die *cu_die);
134
135/* Use next address after prologue as probe location */
136void die_skip_prologue(Dwarf_Die *sp_die, Dwarf_Die *cu_die,
137 Dwarf_Addr *entrypc);
138
139#endif