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,
35 #include "dwarf-aux.h"
38 struct perf_probe_event *pev; /* Target probe event */
40 /* Callback when a probe point is found */
41 int (*callback)(Dwarf_Die *sp_die, struct probe_finder *pf);
43 /* For function searching */
44 int lno; /* Line number */
45 Dwarf_Addr addr; /* Address */
46 const char *fname; /* Real file name */
47 Dwarf_Die cu_die; /* Current CU */
49 struct list_head lcache; /* Line cache for lazy match */
51 /* For variable searching */
52 #if _ELFUTILS_PREREQ(0, 142)
53 Dwarf_CFI *cfi; /* Call Frame Information */
55 Dwarf_Op *fb_ops; /* Frame base attribute */
56 struct perf_probe_arg *pvar; /* Current target variable */
57 struct probe_trace_arg *tvar; /* Current result variable */
60 struct trace_event_finder {
61 struct probe_finder pf;
62 struct probe_trace_event *tevs; /* Found trace events */
63 int ntevs; /* Number of trace events */
64 int max_tevs; /* Max number of trace events */
67 struct available_var_finder {
68 struct probe_finder pf;
69 struct variable_list *vls; /* Found variable lists */
70 int nvls; /* Number of variable lists */
71 int max_vls; /* Max no. of variable lists */
72 bool externs; /* Find external vars too */
73 bool child; /* Search child scopes */
77 struct line_range *lr; /* Target line range */
79 const char *fname; /* File name */
80 int lno_s; /* Start line number */
81 int lno_e; /* End line number */
82 Dwarf_Die cu_die; /* Current CU */
87 #endif /* DWARF_SUPPORT */
89 #endif /*_PROBE_FINDER_H */