#ifndef _PROBE_FINDER_H #define _PROBE_FINDER_H #include <stdbool.h> #include "util.h" #include "probe-event.h" #define MAX_PROBE_BUFFER 1024 #define MAX_PROBES 128 static inline int is_c_varname(const char *name) { /* TODO */ return isalpha(name[0]) || name[0] == '_'; } #ifdef DWARF_SUPPORT #include "dwarf-aux.h" /* TODO: export debuginfo data structure even if no dwarf support */ /* debug information structure */ struct debuginfo { Dwarf *dbg; Dwfl *dwfl; Dwarf_Addr bias; }; extern struct debuginfo *debuginfo__new(const char *path); extern struct debuginfo *debuginfo__new_online_kernel(unsigned long addr); extern void debuginfo__delete(struct debuginfo *self); /* Find probe_trace_events specified by perf_probe_event from debuginfo */ extern int debuginfo__find_trace_events(struct debuginfo *self, struct perf_probe_event *pev, struct probe_trace_event **tevs, int max_tevs); /* Find a perf_probe_point from debuginfo */ extern int debuginfo__find_probe_point(struct debuginfo *self, unsigned long addr, struct perf_probe_point *ppt); /* Find a line range */ extern int debuginfo__find_line_range(struct debuginfo *self, struct line_range *lr); /* Find available variables */ extern int debuginfo__find_available_vars_at(struct debuginfo *self, struct perf_probe_event *pev, struct variable_list **vls, int max_points, bool externs); struct probe_finder { struct perf_probe_event *pev; /* Target probe event */ /* Callback when a probe point is found */ int (*callback)(Dwarf_Die *sc_die, struct probe_finder *pf); /* For function searching */ int lno; /* Line number */ Dwarf_Addr addr; /* Address */ const char *fname; /* Real file name */ Dwarf_Die cu_die; /* Current CU */ Dwarf_Die sp_die; struct list_head lcache; /* Line cache for lazy match */ /* For variable searching */ #if _ELFUTILS_PREREQ(0, 142) Dwarf_CFI *cfi; /* Call Frame Information */ #endif Dwarf_Op *fb_ops; /* Frame base attribute */ struct perf_probe_arg *pvar; /* Current target variable */ struct probe_trace_arg *tvar; /* Current result variable */ }; struct trace_event_finder { struct probe_finder pf; struct probe_trace_event *tevs; /* Found trace events */ int ntevs; /* Number of trace events */ int max_tevs; /* Max number of trace events */ }; struct available_var_finder { struct probe_finder pf; struct variable_list *vls; /* Found variable lists */ int nvls; /* Number of variable lists */ int max_vls; /* Max no. of variable lists */ bool externs; /* Find external vars too */ bool child; /* Search child scopes */ }; struct line_finder { struct line_range *lr; /* Target line range */ const char *fname; /* File name */ int lno_s; /* Start line number */ int lno_e; /* End line number */ Dwarf_Die cu_die; /* Current CU */ Dwarf_Die sp_die; int found; }; #endif /* DWARF_SUPPORT */ #endif /*_PROBE_FINDER_H */