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