d1a651793ba6661bf88684e62978f697d5cbd9f6
[linux-2.6.git] / 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 */