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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
4ea42b18 MH |
2 | #ifndef _PROBE_FINDER_H |
3 | #define _PROBE_FINDER_H | |
4 | ||
804b3606 | 5 | #include <stdbool.h> |
5a62257a | 6 | #include "intlist.h" |
4235b045 | 7 | #include "probe-event.h" |
3052ba56 | 8 | #include <linux/ctype.h> |
4a58e611 | 9 | |
27f3b24d MH |
10 | #define MAX_PROBE_BUFFER 1024 |
11 | #define MAX_PROBES 128 | |
7969ec77 | 12 | #define MAX_PROBE_ARGS 128 |
4ea42b18 | 13 | |
f8bffbf1 MH |
14 | #define PROBE_ARG_VARS "$vars" |
15 | #define PROBE_ARG_PARAMS "$params" | |
16 | ||
4ea42b18 MH |
17 | static inline int is_c_varname(const char *name) |
18 | { | |
19 | /* TODO */ | |
20 | return isalpha(name[0]) || name[0] == '_'; | |
21 | } | |
22 | ||
89fe808a | 23 | #ifdef HAVE_DWARF_SUPPORT |
ff741783 MH |
24 | |
25 | #include "dwarf-aux.h" | |
26 | ||
27 | /* TODO: export debuginfo data structure even if no dwarf support */ | |
28 | ||
29 | /* debug information structure */ | |
30 | struct debuginfo { | |
31 | Dwarf *dbg; | |
576b5237 | 32 | Dwfl_Module *mod; |
ff741783 MH |
33 | Dwfl *dwfl; |
34 | Dwarf_Addr bias; | |
35 | }; | |
36 | ||
a15ad2f5 | 37 | /* This also tries to open distro debuginfo */ |
3938bad4 ACM |
38 | struct debuginfo *debuginfo__new(const char *path); |
39 | void debuginfo__delete(struct debuginfo *dbg); | |
ff741783 | 40 | |
0e60836b | 41 | /* Find probe_trace_events specified by perf_probe_event from debuginfo */ |
3938bad4 ACM |
42 | int debuginfo__find_trace_events(struct debuginfo *dbg, |
43 | struct perf_probe_event *pev, | |
44 | struct probe_trace_event **tevs); | |
4235b045 | 45 | |
fb1587d8 | 46 | /* Find a perf_probe_point from debuginfo */ |
3938bad4 ACM |
47 | int debuginfo__find_probe_point(struct debuginfo *dbg, unsigned long addr, |
48 | struct perf_probe_point *ppt); | |
fb1587d8 | 49 | |
613f050d MH |
50 | int debuginfo__get_text_offset(struct debuginfo *dbg, Dwarf_Addr *offs, |
51 | bool adjust_offset); | |
52 | ||
cf6eb489 | 53 | /* Find a line range */ |
3938bad4 | 54 | int debuginfo__find_line_range(struct debuginfo *dbg, struct line_range *lr); |
4ea42b18 | 55 | |
cf6eb489 | 56 | /* Find available variables */ |
3938bad4 ACM |
57 | int debuginfo__find_available_vars_at(struct debuginfo *dbg, |
58 | struct perf_probe_event *pev, | |
59 | struct variable_list **vls); | |
4ea42b18 | 60 | |
09ed8975 NA |
61 | /* Find a src file from a DWARF tag path */ |
62 | int get_real_path(const char *raw_path, const char *comp_dir, | |
63 | char **new_path); | |
64 | ||
4ea42b18 | 65 | struct probe_finder { |
4235b045 | 66 | struct perf_probe_event *pev; /* Target probe event */ |
cf6eb489 MH |
67 | |
68 | /* Callback when a probe point is found */ | |
221d0611 | 69 | int (*callback)(Dwarf_Die *sc_die, struct probe_finder *pf); |
4ea42b18 MH |
70 | |
71 | /* For function searching */ | |
eed05fe7 | 72 | int lno; /* Line number */ |
804b3606 | 73 | Dwarf_Addr addr; /* Address */ |
4235b045 | 74 | const char *fname; /* Real file name */ |
804b3606 | 75 | Dwarf_Die cu_die; /* Current CU */ |
cd25f8bc | 76 | Dwarf_Die sp_die; |
5a62257a | 77 | struct intlist *lcache; /* Line cache for lazy match */ |
4ea42b18 MH |
78 | |
79 | /* For variable searching */ | |
7752f1b0 | 80 | #if _ELFUTILS_PREREQ(0, 142) |
270bde1e HK |
81 | /* Call Frame Information from .eh_frame */ |
82 | Dwarf_CFI *cfi_eh; | |
83 | /* Call Frame Information from .debug_frame */ | |
84 | Dwarf_CFI *cfi_dbg; | |
7752f1b0 | 85 | #endif |
804b3606 | 86 | Dwarf_Op *fb_ops; /* Frame base attribute */ |
293d5b43 | 87 | unsigned int machine; /* Target machine arch */ |
4235b045 | 88 | struct perf_probe_arg *pvar; /* Current target variable */ |
0e60836b | 89 | struct probe_trace_arg *tvar; /* Current result variable */ |
4ea42b18 | 90 | }; |
631c9def | 91 | |
cf6eb489 MH |
92 | struct trace_event_finder { |
93 | struct probe_finder pf; | |
576b5237 | 94 | Dwfl_Module *mod; /* For solving symbols */ |
cf6eb489 MH |
95 | struct probe_trace_event *tevs; /* Found trace events */ |
96 | int ntevs; /* Number of trace events */ | |
97 | int max_tevs; /* Max number of trace events */ | |
98 | }; | |
99 | ||
100 | struct available_var_finder { | |
101 | struct probe_finder pf; | |
576b5237 | 102 | Dwfl_Module *mod; /* For solving symbols */ |
cf6eb489 MH |
103 | struct variable_list *vls; /* Found variable lists */ |
104 | int nvls; /* Number of variable lists */ | |
105 | int max_vls; /* Max no. of variable lists */ | |
fb8c5a56 | 106 | bool child; /* Search child scopes */ |
cf6eb489 MH |
107 | }; |
108 | ||
631c9def | 109 | struct line_finder { |
804b3606 MH |
110 | struct line_range *lr; /* Target line range */ |
111 | ||
112 | const char *fname; /* File name */ | |
113 | int lno_s; /* Start line number */ | |
114 | int lno_e; /* End line number */ | |
804b3606 | 115 | Dwarf_Die cu_die; /* Current CU */ |
cd25f8bc | 116 | Dwarf_Die sp_die; |
631c9def MH |
117 | int found; |
118 | }; | |
119 | ||
89fe808a | 120 | #endif /* HAVE_DWARF_SUPPORT */ |
4ea42b18 MH |
121 | |
122 | #endif /*_PROBE_FINDER_H */ |