SAFE public projects git trees. - safe/jmp/linux-2.6/blob - tools/perf/util/probe-finder.h

   1 #ifndef _PROBE_FINDER_H
   2 #define _PROBE_FINDER_H
   3
   4 #define _stringify(n)   #n
   5 #define stringify(n)    _stringify(n)
   6
   7 #ifdef DEBUG
   8 #define debug(fmt ...)  \
   9         fprintf(stderr, "DBG(" __FILE__ ":" stringify(__LINE__) "): " fmt)
  10 #else
  11 #define debug(fmt ...)  do {} while (0)
  12 #endif
  13
  14 #define ERR_IF(cnd)     \
  15         do { if (cnd) { \
  16                 fprintf(stderr, "Error (" __FILE__ ":" stringify(__LINE__) \
  17                         "): " stringify(cnd) "\n");                     \
  18                 exit(1);                                                \
  19         } } while (0)
  20
  21 #define MAX_PATH_LEN 256
  22 #define MAX_PROBE_BUFFER 1024
  23 #define MAX_PROBES 128
  24
  25 static inline int is_c_varname(const char *name)
  26 {
  27         /* TODO */
  28         return isalpha(name[0]) || name[0] == '_';
  29 }
  30
  31 struct probe_point {
  32         /* Inputs */
  33         char    *file;          /* File name */
  34         int     line;           /* Line number */
  35
  36         char    *function;      /* Function name */
  37         int     offset;         /* Offset bytes */
  38
  39         int     nr_args;        /* Number of arguments */
  40         char    **args;         /* Arguments */
  41
  42         /* Output */
  43         int     found;          /* Number of found probe points */
  44         char    *probes[MAX_PROBES];    /* Output buffers (will be allocated)*/
  45 };
  46
  47 #ifndef NO_LIBDWARF
  48 extern int find_probepoint(int fd, struct probe_point *pp);
  49
  50 #include <libdwarf/dwarf.h>
  51 #include <libdwarf/libdwarf.h>
  52
  53 struct probe_finder {
  54         struct probe_point      *pp;    /* Target probe point */
  55
  56         /* For function searching */
  57         Dwarf_Addr      addr;           /* Address */
  58         Dwarf_Unsigned  fno;            /* File number */
  59         Dwarf_Off       inl_offs;       /* Inline offset */
  60
  61         /* For variable searching */
  62         Dwarf_Addr      cu_base;        /* Current CU base address */
  63         Dwarf_Locdesc   fbloc;          /* Location of Current Frame Base */
  64         const char      *var;           /* Current variable name */
  65         char            *buf;           /* Current output buffer */
  66         int             len;            /* Length of output buffer */
  67 };
  68 #endif /* NO_LIBDWARF */
  69
  70 #endif /*_PROBE_FINDER_H */