tools/perf/util/unwind.h

   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
  28 static inline int unwind__prepare_access(struct thread *thread __maybe_unused)
  29 {
  30         return 0;
  31 }
  32
  33 static inline void unwind__flush_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
  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
  47 static inline int unwind__prepare_access(struct thread *thread __maybe_unused)
  48 {
  49         return 0;
  50 }
  51
  52 static inline void unwind__flush_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 */