tools/perf/util/probe-finder.h

   1 #ifndef _PROBE_FINDER_H
   2 #define _PROBE_FINDER_H
   3
   4 #define MAX_PATH_LEN             256
   5 #define MAX_PROBE_BUFFER        1024
   6 #define MAX_PROBES               128
   7
   8 static inline int is_c_varname(const char *name)
   9 {
  10         /* TODO */
  11         return isalpha(name[0]) || name[0] == '_';
  12 }
  13
  14 struct probe_point {
  15         char                    *event;                 /* Event name */
  16         char                    *group;                 /* Event group */
  17
  18         /* Inputs */
  19         char                    *file;                  /* File name */
  20         int                     line;                   /* Line number */
  21
  22         char                    *function;              /* Function name */
  23         int                     offset;                 /* Offset bytes */
  24
  25         int                     nr_args;                /* Number of arguments */
  26         char                    **args;                 /* Arguments */
  27
  28         int                     retprobe;               /* Return probe */
  29
  30         /* Output */
  31         int                     found;                  /* Number of found probe points */
  32         char                    *probes[MAX_PROBES];    /* Output buffers (will be allocated)*/
  33 };
  34
  35 #ifndef NO_LIBDWARF
  36 extern int find_probepoint(int fd, struct probe_point *pp);
  37
  38 /* Workaround for undefined _MIPS_SZLONG bug in libdwarf.h: */
  39 #ifndef _MIPS_SZLONG
  40 # define _MIPS_SZLONG           0
  41 #endif
  42
  43 #include <dwarf.h>
  44 #include <libdwarf.h>
  45
  46 struct probe_finder {
  47         struct probe_point      *pp;                    /* Target probe point */
  48
  49         /* For function searching */
  50         Dwarf_Addr              addr;                   /* Address */
  51         Dwarf_Unsigned          fno;                    /* File number */
  52         Dwarf_Unsigned          lno;                    /* Line number */
  53         Dwarf_Off               inl_offs;               /* Inline offset */
  54         Dwarf_Die               cu_die;                 /* Current CU */
  55
  56         /* For variable searching */
  57         Dwarf_Addr              cu_base;                /* Current CU base address */
  58         Dwarf_Locdesc           fbloc;                  /* Location of Current Frame Base */
  59         const char              *var;                   /* Current variable name */
  60         char                    *buf;                   /* Current output buffer */
  61         int                     len;                    /* Length of output buffer */
  62 };
  63 #endif /* NO_LIBDWARF */
  64
  65 #endif /*_PROBE_FINDER_H */