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 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 kprobe_trace_events specified by perf_probe_event from debuginfo */ 20 extern int find_kprobe_trace_events(int fd, struct perf_probe_event *pev, 21 struct kprobe_trace_event **tevs, 22 int max_tevs); 23 24 /* Find a perf_probe_point from debuginfo */ 25 extern int find_perf_probe_point(int fd, unsigned long addr, 26 struct perf_probe_point *ppt); 27 28 extern int find_line_range(int fd, struct line_range *lr); 29 30 #include <dwarf.h> 31 #include <libdw.h> 32 33 struct probe_finder { 34 struct perf_probe_event *pev; /* Target probe event */ 35 struct kprobe_trace_event *tevs; /* Result trace events */ 36 int ntevs; /* Number of trace events */ 37 int max_tevs; /* Max number of trace events */ 38 39 /* For function searching */ 40 int lno; /* Line number */ 41 Dwarf_Addr addr; /* Address */ 42 const char *fname; /* Real file name */ 43 Dwarf_Die cu_die; /* Current CU */ 44 struct list_head lcache; /* Line cache for lazy match */ 45 46 /* For variable searching */ 47 Dwarf_CFI *cfi; /* Call Frame Information */ 48 Dwarf_Op *fb_ops; /* Frame base attribute */ 49 struct perf_probe_arg *pvar; /* Current target variable */ 50 struct kprobe_trace_arg *tvar; /* Current result variable */ 51 }; 52 53 struct line_finder { 54 struct line_range *lr; /* Target line range */ 55 56 const char *fname; /* File name */ 57 int lno_s; /* Start line number */ 58 int lno_e; /* End line number */ 59 Dwarf_Die cu_die; /* Current CU */ 60 int found; 61 }; 62 63 #endif /* DWARF_SUPPORT */ 64 65 #endif /*_PROBE_FINDER_H */ 66