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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 | #include <dwarf.h> |
37 | #include <elfutils/libdw.h> |
38 | #include <elfutils/libdwfl.h> |
39 | #include <elfutils/version.h> |
40 | |
41 | struct probe_finder { |
42 | struct perf_probe_event *pev; /* Target probe event */ |
43 | |
44 | /* Callback when a probe point is found */ |
45 | int (*callback)(Dwarf_Die *sp_die, struct probe_finder *pf); |
46 | |
47 | /* For function searching */ |
48 | int lno; /* Line number */ |
49 | Dwarf_Addr addr; /* Address */ |
50 | const char *fname; /* Real file name */ |
51 | Dwarf_Die cu_die; /* Current CU */ |
52 | Dwarf_Die sp_die; |
53 | struct list_head lcache; /* Line cache for lazy match */ |
54 | |
55 | /* For variable searching */ |
56 | #if _ELFUTILS_PREREQ(0, 142) |
57 | Dwarf_CFI *cfi; /* Call Frame Information */ |
58 | #endif |
59 | Dwarf_Op *fb_ops; /* Frame base attribute */ |
60 | struct perf_probe_arg *pvar; /* Current target variable */ |
61 | struct probe_trace_arg *tvar; /* Current result variable */ |
62 | }; |
63 | |
64 | struct trace_event_finder { |
65 | struct probe_finder pf; |
66 | struct probe_trace_event *tevs; /* Found trace events */ |
67 | int ntevs; /* Number of trace events */ |
68 | int max_tevs; /* Max number of trace events */ |
69 | }; |
70 | |
71 | struct available_var_finder { |
72 | struct probe_finder pf; |
73 | struct variable_list *vls; /* Found variable lists */ |
74 | int nvls; /* Number of variable lists */ |
75 | int max_vls; /* Max no. of variable lists */ |
76 | bool externs; /* Find external vars too */ |
77 | bool child; /* Search child scopes */ |
78 | }; |
79 | |
80 | struct line_finder { |
81 | struct line_range *lr; /* Target line range */ |
82 | |
83 | const char *fname; /* File name */ |
84 | int lno_s; /* Start line number */ |
85 | int lno_e; /* End line number */ |
86 | Dwarf_Die cu_die; /* Current CU */ |
87 | Dwarf_Die sp_die; |
88 | int found; |
89 | }; |
90 | |
91 | #endif /* DWARF_SUPPORT */ |
92 | |
93 | #endif /*_PROBE_FINDER_H */ |
94 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
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v3.9