1 #ifndef _PROBE_FINDER_H
2 #define _PROBE_FINDER_H
3
4 #include <stdbool.h>
5 #include "util.h"
6 #include "probe-event.h"
7
8 #define MAX_PATH_LEN 256
9 #define MAX_PROBE_BUFFER 1024
10 #define MAX_PROBES 128
11
is_c_varname(const char * name)12 static inline int is_c_varname(const char *name)
13 {
14 /* TODO */
15 return isalpha(name[0]) || name[0] == '_';
16 }
17
18 #ifdef DWARF_SUPPORT
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,
22 int max_tevs);
23
24 /* Find a perf_probe_point from debuginfo */
25 extern int find_perf_probe_point(unsigned long addr,
26 struct perf_probe_point *ppt);
27
28 /* Find a line range */
29 extern int find_line_range(int fd, struct line_range *lr);
30
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,
34 bool externs);
35
36 /* ANDROID_CHANGE_BEGIN */
37 #if 0
38 #include <dwarf.h>
39 #include <elfutils/libdw.h>
40 #include <elfutils/libdwfl.h>
41 #include <elfutils/version.h>
42 #else
43 /* These headers live under the external/elfutils */
44 #include <dwarf.h>
45 #include <libdw.h>
46 #include <libdwfl.h>
47 #include <version.h>
48 #endif
49 /* ANDROID_CHANGE_END */
50
51 struct probe_finder {
52 struct perf_probe_event *pev; /* Target probe event */
53
54 /* Callback when a probe point is found */
55 int (*callback)(Dwarf_Die *sp_die, struct probe_finder *pf);
56
57 /* For function searching */
58 int lno; /* Line number */
59 Dwarf_Addr addr; /* Address */
60 const char *fname; /* Real file name */
61 Dwarf_Die cu_die; /* Current CU */
62 Dwarf_Die sp_die;
63 struct list_head lcache; /* Line cache for lazy match */
64
65 /* For variable searching */
66 #if _ELFUTILS_PREREQ(0, 142)
67 Dwarf_CFI *cfi; /* Call Frame Information */
68 #endif
69 Dwarf_Op *fb_ops; /* Frame base attribute */
70 struct perf_probe_arg *pvar; /* Current target variable */
71 struct probe_trace_arg *tvar; /* Current result variable */
72 };
73
74 struct trace_event_finder {
75 struct probe_finder pf;
76 struct probe_trace_event *tevs; /* Found trace events */
77 int ntevs; /* Number of trace events */
78 int max_tevs; /* Max number of trace events */
79 };
80
81 struct available_var_finder {
82 struct probe_finder pf;
83 struct variable_list *vls; /* Found variable lists */
84 int nvls; /* Number of variable lists */
85 int max_vls; /* Max no. of variable lists */
86 bool externs; /* Find external vars too */
87 bool child; /* Search child scopes */
88 };
89
90 struct line_finder {
91 struct line_range *lr; /* Target line range */
92
93 const char *fname; /* File name */
94 int lno_s; /* Start line number */
95 int lno_e; /* End line number */
96 Dwarf_Die cu_die; /* Current CU */
97 Dwarf_Die sp_die;
98 int found;
99 };
100
101 #endif /* DWARF_SUPPORT */
102
103 #endif /*_PROBE_FINDER_H */
104