| #ifndef _PROBE_FINDER_H |
| #define _PROBE_FINDER_H |
| |
| #include <stdbool.h> |
| #include "util.h" |
| #include "probe-event.h" |
| |
| #define MAX_PATH_LEN 256 |
| #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 |
| /* Find probe_trace_events specified by perf_probe_event from debuginfo */ |
| extern int find_probe_trace_events(int fd, struct perf_probe_event *pev, |
| struct probe_trace_event **tevs, |
| int max_tevs); |
| |
| /* Find a perf_probe_point from debuginfo */ |
| extern int find_perf_probe_point(int fd, unsigned long addr, |
| struct perf_probe_point *ppt); |
| |
| /* Find a line range */ |
| extern int find_line_range(int fd, struct line_range *lr); |
| |
| /* Find available variables */ |
| extern int find_available_vars_at(int fd, struct perf_probe_event *pev, |
| struct variable_list **vls, int max_points); |
| |
| #include <dwarf.h> |
| #include <libdw.h> |
| #include <version.h> |
| |
| struct probe_finder { |
| struct perf_probe_event *pev; /* Target probe event */ |
| |
| /* Callback when a probe point is found */ |
| int (*callback)(Dwarf_Die *sp_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 */ |
| 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 */ |
| }; |
| |
| 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 */ |
| int found; |
| }; |
| |
| #endif /* DWARF_SUPPORT */ |
| |
| #endif /*_PROBE_FINDER_H */ |