1 #ifndef __UNWIND_H
2 #define __UNWIND_H
3
4 #include <linux/types.h>
5 #include "event.h"
6 #include "symbol.h"
7 #include "thread.h"
8
9 struct unwind_entry {
10 struct map *map;
11 struct symbol *sym;
12 u64 ip;
13 };
14
15 typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg);
16
17 #ifdef HAVE_DWARF_UNWIND_SUPPORT
18 int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
19 struct thread *thread,
20 struct perf_sample *data, int max_stack);
21 /* libunwind specific */
22 #ifdef HAVE_LIBUNWIND_SUPPORT
23 int libunwind__arch_reg_id(int regnum);
24 int unwind__prepare_access(struct thread *thread);
25 void unwind__flush_access(struct thread *thread);
26 void unwind__finish_access(struct thread *thread);
27 #else
unwind__prepare_access(struct thread * thread __maybe_unused)28 static inline int unwind__prepare_access(struct thread *thread __maybe_unused)
29 {
30 return 0;
31 }
32
unwind__flush_access(struct thread * thread __maybe_unused)33 static inline void unwind__flush_access(struct thread *thread __maybe_unused) {}
unwind__finish_access(struct thread * thread __maybe_unused)34 static inline void unwind__finish_access(struct thread *thread __maybe_unused) {}
35 #endif
36 #else
37 static inline int
unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,void * arg __maybe_unused,struct thread * thread __maybe_unused,struct perf_sample * data __maybe_unused,int max_stack __maybe_unused)38 unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
39 void *arg __maybe_unused,
40 struct thread *thread __maybe_unused,
41 struct perf_sample *data __maybe_unused,
42 int max_stack __maybe_unused)
43 {
44 return 0;
45 }
46
unwind__prepare_access(struct thread * thread __maybe_unused)47 static inline int unwind__prepare_access(struct thread *thread __maybe_unused)
48 {
49 return 0;
50 }
51
unwind__flush_access(struct thread * thread __maybe_unused)52 static inline void unwind__flush_access(struct thread *thread __maybe_unused) {}
unwind__finish_access(struct thread * thread __maybe_unused)53 static inline void unwind__finish_access(struct thread *thread __maybe_unused) {}
54 #endif /* HAVE_DWARF_UNWIND_SUPPORT */
55 #endif /* __UNWIND_H */
56