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dwarf-aux.h
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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 */
28 const char *cu_find_realpath(Dwarf_Die *cu_die, const char *fname);
29 
30 /* Get DW_AT_comp_dir (should be NULL with older gcc) */
31 const char *cu_get_comp_dir(Dwarf_Die *cu_die);
32 
33 /* Get a line number and file name for given address */
34 int cu_find_lineinfo(Dwarf_Die *cudie, unsigned long addr,
35  const char **fname, int *lineno);
36 
37 /* Walk on funcitons at given address */
38 int 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) */
42 const char *die_get_linkage_name(Dwarf_Die *dw_die);
43 
44 /* Ensure that this DIE is a subprogram and definition (not declaration) */
45 bool die_is_func_def(Dwarf_Die *dw_die);
46 
47 /* Ensure that this DIE is an instance of a subprogram */
48 bool die_is_func_instance(Dwarf_Die *dw_die);
49 
50 /* Compare diename and tname */
51 bool die_compare_name(Dwarf_Die *dw_die, const char *tname);
52 
53 /* Matching diename with glob pattern */
54 bool die_match_name(Dwarf_Die *dw_die, const char *glob);
55 
56 /* Get callsite line number of inline-function instance */
57 int die_get_call_lineno(Dwarf_Die *in_die);
58 
59 /* Get callsite file name of inlined function instance */
60 const char *die_get_call_file(Dwarf_Die *in_die);
61 
62 /* Get type die */
63 Dwarf_Die *die_get_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem);
64 
65 /* Get a type die, but skip qualifiers and typedef */
66 Dwarf_Die *die_get_real_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem);
67 
68 /* Check whether the DIE is signed or not */
69 bool die_is_signed_type(Dwarf_Die *tp_die);
70 
71 /* Get data_member_location offset */
72 int die_get_data_member_location(Dwarf_Die *mb_die, Dwarf_Word *offs);
73 
74 /* Return values for die_find_child() callbacks */
75 enum {
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 */
83 Dwarf_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 */
88 Dwarf_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 */
92 Dwarf_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 */
96 Dwarf_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 */
100 Dwarf_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 */
104 int 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) */
108 typedef 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  */
115 int die_walk_lines(Dwarf_Die *rt_die, line_walk_callback_t callback, void *data);
116 
117 /* Find a variable called 'name' at given address */
118 Dwarf_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' */
122 Dwarf_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 */
126 int 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" */
129 int die_get_varname(Dwarf_Die *vr_die, struct strbuf *buf);
130 int 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 */
133 bool die_is_optimized_target(Dwarf_Die *cu_die);
134 
135 /* Use next address after prologue as probe location */
136 void die_skip_prologue(Dwarf_Die *sp_die, Dwarf_Die *cu_die,
137  Dwarf_Addr *entrypc);
138 
139 #endif
Definition: strbuf.h:50
int cu_find_lineinfo(Dwarf_Die *cudie, unsigned long addr, const char **fname, int *lineno)
Definition: dwarf-aux.c:84
int die_walk_lines(Dwarf_Die *rt_die, line_walk_callback_t callback, void *data)
Definition: dwarf-aux.c:759
dictionary data
Definition: stat-cpi.py:4
bool die_compare_name(Dwarf_Die *dw_die, const char *tname)
Definition: dwarf-aux.c:158
Dwarf_Die * die_find_realfunc(Dwarf_Die *cu_die, Dwarf_Addr addr, Dwarf_Die *die_mem)
Definition: dwarf-aux.c:526
bool die_is_func_instance(Dwarf_Die *dw_die)
Definition: dwarf-aux.c:331
int die_get_var_range(Dwarf_Die *sp_die, Dwarf_Die *vr_die, struct strbuf *buf)
const char * name
int die_get_typename(Dwarf_Die *vr_die, struct strbuf *buf)
Definition: dwarf-aux.c:931
const char * cu_find_realpath(Dwarf_Die *cu_die, const char *fname)
Definition: dwarf-aux.c:35
int die_get_data_member_location(Dwarf_Die *mb_die, Dwarf_Word *offs)
Definition: dwarf-aux.c:346
bool die_is_signed_type(Dwarf_Die *tp_die)
Definition: dwarf-aux.c:297
int(* line_walk_callback_t)(const char *fname, int lineno, Dwarf_Addr addr, void *data)
Definition: dwarf-aux.h:108
Dwarf_Die * die_get_real_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem)
Definition: dwarf-aux.c:255
Dwarf_Die * die_find_top_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr, Dwarf_Die *die_mem)
Definition: dwarf-aux.c:562
int die_get_varname(Dwarf_Die *vr_die, struct strbuf *buf)
Definition: dwarf-aux.c:969
int die_walk_instances(Dwarf_Die *in_die, int(*callback)(Dwarf_Die *, void *), void *data)
Definition: dwarf-aux.c:647
const char * die_get_call_file(Dwarf_Die *in_die)
Definition: dwarf-aux.c:401
Dwarf_Die * die_find_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr, Dwarf_Die *die_mem)
Definition: dwarf-aux.c:579
Dwarf_Die * die_find_member(Dwarf_Die *st_die, const char *name, Dwarf_Die *die_mem)
Definition: dwarf-aux.c:914
int cu_walk_functions_at(Dwarf_Die *cu_die, Dwarf_Addr addr, int(*callback)(Dwarf_Die *, void *), void *data)
Definition: dwarf-aux.c:114
Dwarf_Die * die_find_variable_at(Dwarf_Die *sp_die, const char *name, Dwarf_Addr addr, Dwarf_Die *die_mem)
Definition: dwarf-aux.c:880
Dwarf_Die * die_find_child(Dwarf_Die *rt_die, int(*callback)(Dwarf_Die *, void *), void *data, Dwarf_Die *die_mem)
Definition: dwarf-aux.c:431
int die_get_call_lineno(Dwarf_Die *in_die)
Definition: dwarf-aux.c:196
void die_skip_prologue(Dwarf_Die *sp_die, Dwarf_Die *cu_die, Dwarf_Addr *entrypc)
Definition: dwarf-aux.c:1270
Dwarf_Die * die_get_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem)
Definition: dwarf-aux.c:216
const char * cu_get_comp_dir(Dwarf_Die *cu_die)
Definition: dwarf-aux.c:67
bool die_match_name(Dwarf_Die *dw_die, const char *glob)
Definition: dwarf-aux.c:174
Dwarf_Die * die_find_tailfunc(Dwarf_Die *cu_die, Dwarf_Addr addr, Dwarf_Die *die_mem)
Definition: dwarf-aux.c:487
const char * die_get_linkage_name(Dwarf_Die *dw_die)
Definition: dwarf-aux.c:142
bool die_is_func_def(Dwarf_Die *dw_die)
Definition: dwarf-aux.c:315
bool die_is_optimized_target(Dwarf_Die *cu_die)
Definition: dwarf-aux.c:1142