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 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
