1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _PROBE_FINDER_H 2 #ifndef _PROBE_FINDER_H
3 #define _PROBE_FINDER_H 3 #define _PROBE_FINDER_H
4 4
5 #include <stdbool.h> 5 #include <stdbool.h>
6 #include "intlist.h" 6 #include "intlist.h"
7 #include "build-id.h" 7 #include "build-id.h"
8 #include "probe-event.h" 8 #include "probe-event.h"
9 #include <linux/ctype.h> 9 #include <linux/ctype.h>
10 10
11 #define MAX_PROBE_BUFFER 1024 11 #define MAX_PROBE_BUFFER 1024
12 #define MAX_PROBES 128 12 #define MAX_PROBES 128
13 #define MAX_PROBE_ARGS 128 13 #define MAX_PROBE_ARGS 128
14 14
15 #define PROBE_ARG_VARS "$vars" 15 #define PROBE_ARG_VARS "$vars"
16 #define PROBE_ARG_PARAMS "$params" 16 #define PROBE_ARG_PARAMS "$params"
17 17
18 static inline int is_c_varname(const char *nam 18 static inline int is_c_varname(const char *name)
19 { 19 {
20 /* TODO */ 20 /* TODO */
21 return isalpha(name[0]) || name[0] == 21 return isalpha(name[0]) || name[0] == '_';
22 } 22 }
23 23
24 #ifdef HAVE_DWARF_SUPPORT 24 #ifdef HAVE_DWARF_SUPPORT
25 25
26 #include "dwarf-aux.h" 26 #include "dwarf-aux.h"
27 #include "debuginfo.h" !! 27
>> 28 /* TODO: export debuginfo data structure even if no dwarf support */
>> 29
>> 30 /* debug information structure */
>> 31 struct debuginfo {
>> 32 Dwarf *dbg;
>> 33 Dwfl_Module *mod;
>> 34 Dwfl *dwfl;
>> 35 Dwarf_Addr bias;
>> 36 const unsigned char *build_id;
>> 37 };
>> 38
>> 39 /* This also tries to open distro debuginfo */
>> 40 struct debuginfo *debuginfo__new(const char *path);
>> 41 void debuginfo__delete(struct debuginfo *dbg);
28 42
29 /* Find probe_trace_events specified by perf_p 43 /* Find probe_trace_events specified by perf_probe_event from debuginfo */
30 int debuginfo__find_trace_events(struct debugi 44 int debuginfo__find_trace_events(struct debuginfo *dbg,
31 struct perf_p 45 struct perf_probe_event *pev,
32 struct probe_ 46 struct probe_trace_event **tevs);
33 47
34 /* Find a perf_probe_point from debuginfo */ 48 /* Find a perf_probe_point from debuginfo */
35 int debuginfo__find_probe_point(struct debugin !! 49 int debuginfo__find_probe_point(struct debuginfo *dbg, unsigned long addr,
36 struct perf_pr 50 struct perf_probe_point *ppt);
>> 51
>> 52 int debuginfo__get_text_offset(struct debuginfo *dbg, Dwarf_Addr *offs,
>> 53 bool adjust_offset);
37 54
38 /* Find a line range */ 55 /* Find a line range */
39 int debuginfo__find_line_range(struct debuginf 56 int debuginfo__find_line_range(struct debuginfo *dbg, struct line_range *lr);
40 57
41 /* Find available variables */ 58 /* Find available variables */
42 int debuginfo__find_available_vars_at(struct d 59 int debuginfo__find_available_vars_at(struct debuginfo *dbg,
43 struct p 60 struct perf_probe_event *pev,
44 struct v 61 struct variable_list **vls);
45 62
46 /* Find a src file from a DWARF tag path */ 63 /* Find a src file from a DWARF tag path */
47 int find_source_path(const char *raw_path, con 64 int find_source_path(const char *raw_path, const char *sbuild_id,
48 const char *comp_dir, cha 65 const char *comp_dir, char **new_path);
49 66
50 struct probe_finder { 67 struct probe_finder {
51 struct perf_probe_event *pev; 68 struct perf_probe_event *pev; /* Target probe event */
52 struct debuginfo *dbg; 69 struct debuginfo *dbg;
53 70
54 /* Callback when a probe point is foun 71 /* Callback when a probe point is found */
55 int (*callback)(Dwarf_Die *sc_die, str 72 int (*callback)(Dwarf_Die *sc_die, struct probe_finder *pf);
56 73
57 /* For function searching */ 74 /* For function searching */
58 int lno; 75 int lno; /* Line number */
59 Dwarf_Addr addr; 76 Dwarf_Addr addr; /* Address */
60 const char *fname; 77 const char *fname; /* Real file name */
61 Dwarf_Die cu_die; 78 Dwarf_Die cu_die; /* Current CU */
62 Dwarf_Die sp_die; 79 Dwarf_Die sp_die;
63 struct intlist *lcache; 80 struct intlist *lcache; /* Line cache for lazy match */
64 81
65 /* For variable searching */ 82 /* For variable searching */
66 #if _ELFUTILS_PREREQ(0, 142) 83 #if _ELFUTILS_PREREQ(0, 142)
67 /* Call Frame Information from .eh_fra 84 /* Call Frame Information from .eh_frame */
68 Dwarf_CFI *cfi_eh; 85 Dwarf_CFI *cfi_eh;
69 /* Call Frame Information from .debug_ 86 /* Call Frame Information from .debug_frame */
70 Dwarf_CFI *cfi_dbg; 87 Dwarf_CFI *cfi_dbg;
71 #endif 88 #endif
72 Dwarf_Op *fb_ops; 89 Dwarf_Op *fb_ops; /* Frame base attribute */
73 unsigned int machine; 90 unsigned int machine; /* Target machine arch */
74 struct perf_probe_arg *pvar; 91 struct perf_probe_arg *pvar; /* Current target variable */
75 struct probe_trace_arg *tvar; 92 struct probe_trace_arg *tvar; /* Current result variable */
76 bool skip_empty_arg 93 bool skip_empty_arg; /* Skip non-exist args */
77 }; 94 };
78 95
79 struct trace_event_finder { 96 struct trace_event_finder {
80 struct probe_finder pf; 97 struct probe_finder pf;
81 Dwfl_Module *mod; 98 Dwfl_Module *mod; /* For solving symbols */
82 struct probe_trace_event *tevs; 99 struct probe_trace_event *tevs; /* Found trace events */
83 int ntevs; 100 int ntevs; /* Number of trace events */
84 int max_tevs; 101 int max_tevs; /* Max number of trace events */
85 }; 102 };
86 103
87 struct available_var_finder { 104 struct available_var_finder {
88 struct probe_finder pf; 105 struct probe_finder pf;
89 Dwfl_Module *mod; 106 Dwfl_Module *mod; /* For solving symbols */
90 struct variable_list *vls; 107 struct variable_list *vls; /* Found variable lists */
91 int nvls; 108 int nvls; /* Number of variable lists */
92 int max_vls; 109 int max_vls; /* Max no. of variable lists */
93 bool child; 110 bool child; /* Search child scopes */
94 }; 111 };
95 112
96 struct line_finder { 113 struct line_finder {
97 struct line_range *lr; 114 struct line_range *lr; /* Target line range */
98 115
99 const char *fname; 116 const char *fname; /* File name */
100 int lno_s; 117 int lno_s; /* Start line number */
101 int lno_e; 118 int lno_e; /* End line number */
102 Dwarf_Die cu_die; 119 Dwarf_Die cu_die; /* Current CU */
103 Dwarf_Die sp_die; 120 Dwarf_Die sp_die;
104 int found; 121 int found;
105 }; 122 };
106 123
107 #endif /* HAVE_DWARF_SUPPORT */ 124 #endif /* HAVE_DWARF_SUPPORT */
108 125
109 #endif /*_PROBE_FINDER_H */ 126 #endif /*_PROBE_FINDER_H */
110 127
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