1 #ifndef _PROBE_FINDER_H
2 #define _PROBE_FINDER_H
6 #include "probe-event.h"
8 #define MAX_PATH_LEN 256
9 #define MAX_PROBE_BUFFER 1024
10 #define MAX_PROBES 128
12 static inline int is_c_varname(const char *name
)
15 return isalpha(name
[0]) || name
[0] == '_';
19 /* Find probe_trace_events specified by perf_probe_event from debuginfo */
20 extern int find_probe_trace_events(int fd
, struct perf_probe_event
*pev
,
21 struct probe_trace_event
**tevs
,
24 /* Find a perf_probe_point from debuginfo */
25 extern int find_perf_probe_point(unsigned long addr
,
26 struct perf_probe_point
*ppt
);
28 /* Find a line range */
29 extern int find_line_range(int fd
, struct line_range
*lr
);
31 /* Find available variables */
32 extern int find_available_vars_at(int fd
, struct perf_probe_event
*pev
,
33 struct variable_list
**vls
, int max_points
,
37 #include <elfutils/libdw.h>
38 #include <elfutils/libdwfl.h>
39 #include <elfutils/version.h>
42 struct perf_probe_event
*pev
; /* Target probe event */
44 /* Callback when a probe point is found */
45 int (*callback
)(Dwarf_Die
*sp_die
, struct probe_finder
*pf
);
47 /* For function searching */
48 int lno
; /* Line number */
49 Dwarf_Addr addr
; /* Address */
50 const char *fname
; /* Real file name */
51 Dwarf_Die cu_die
; /* Current CU */
53 struct list_head lcache
; /* Line cache for lazy match */
55 /* For variable searching */
56 #if _ELFUTILS_PREREQ(0, 142)
57 Dwarf_CFI
*cfi
; /* Call Frame Information */
59 Dwarf_Op
*fb_ops
; /* Frame base attribute */
60 struct perf_probe_arg
*pvar
; /* Current target variable */
61 struct probe_trace_arg
*tvar
; /* Current result variable */
64 struct trace_event_finder
{
65 struct probe_finder pf
;
66 struct probe_trace_event
*tevs
; /* Found trace events */
67 int ntevs
; /* Number of trace events */
68 int max_tevs
; /* Max number of trace events */
71 struct available_var_finder
{
72 struct probe_finder pf
;
73 struct variable_list
*vls
; /* Found variable lists */
74 int nvls
; /* Number of variable lists */
75 int max_vls
; /* Max no. of variable lists */
76 bool externs
; /* Find external vars too */
77 bool child
; /* Search child scopes */
81 struct line_range
*lr
; /* Target line range */
83 const char *fname
; /* File name */
84 int lno_s
; /* Start line number */
85 int lno_e
; /* End line number */
86 Dwarf_Die cu_die
; /* Current CU */
91 #endif /* DWARF_SUPPORT */
93 #endif /*_PROBE_FINDER_H */