tools/perf/util/probe-finder.h

   1 #ifndef _PROBE_FINDER_H
   2 #define _PROBE_FINDER_H
   3
   4 #include <stdbool.h>
   5 #include "util.h"
   6
   7 #define MAX_PATH_LEN             256
   8 #define MAX_PROBE_BUFFER        1024
   9 #define MAX_PROBES               128
  10
  11 static inline int is_c_varname(const char *name)
  12 {
  13         /* TODO */
  14         return isalpha(name[0]) || name[0] == '_';
  15 }
  16
  17 struct probe_point {
  18         char                    *event;                 /* Event name */
  19         char                    *group;                 /* Event group */
  20
  21         /* Inputs */
  22         char                    *file;                  /* File name */
  23         int                     line;                   /* Line number */
  24         char                    *lazy_line;             /* Lazy line pattern */
  25
  26         char                    *function;              /* Function name */
  27         int                     offset;                 /* Offset bytes */
  28
  29         int                     nr_args;                /* Number of arguments */
  30         char                    **args;                 /* Arguments */
  31
  32         int                     retprobe;               /* Return probe */
  33
  34         /* Output */
  35         int                     found;                  /* Number of found probe points */
  36         char                    *probes[MAX_PROBES];    /* Output buffers (will be allocated)*/
  37 };
  38
  39 /* Line number container */
  40 struct line_node {
  41         struct list_head        list;
  42         unsigned int            line;
  43 };
  44
  45 /* Line range */
  46 struct line_range {
  47         char                    *file;                  /* File name */
  48         char                    *function;              /* Function name */
  49         unsigned int            start;                  /* Start line number */
  50         unsigned int            end;                    /* End line number */
  51         int                     offset;                 /* Start line offset */
  52         char                    *path;                  /* Real path name */
  53         struct list_head        line_list;              /* Visible lines */
  54 };
  55
  56 #ifndef NO_DWARF_SUPPORT
  57 extern int find_probe_point(int fd, struct probe_point *pp);
  58 extern int find_line_range(int fd, struct line_range *lr);
  59
  60 #include <dwarf.h>
  61 #include <libdw.h>
  62
  63 struct probe_finder {
  64         struct probe_point      *pp;            /* Target probe point */
  65
  66         /* For function searching */
  67         Dwarf_Addr              addr;           /* Address */
  68         const char              *fname;         /* File name */
  69         int                     lno;            /* Line number */
  70         Dwarf_Die               cu_die;         /* Current CU */
  71
  72         /* For variable searching */
  73         Dwarf_Op                *fb_ops;        /* Frame base attribute */
  74         Dwarf_Addr              cu_base;        /* Current CU base address */
  75         const char              *var;           /* Current variable name */
  76         char                    *buf;           /* Current output buffer */
  77         int                     len;            /* Length of output buffer */
  78         struct list_head        lcache;         /* Line cache for lazy match */
  79 };
  80
  81 struct line_finder {
  82         struct line_range       *lr;            /* Target line range */
  83
  84         const char              *fname;         /* File name */
  85         int                     lno_s;          /* Start line number */
  86         int                     lno_e;          /* End line number */
  87         Dwarf_Die               cu_die;         /* Current CU */
  88         int                     found;
  89 };
  90
  91 #endif /* NO_DWARF_SUPPORT */
  92
  93 #endif /*_PROBE_FINDER_H */