LXR linux/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
   9struct unwind_entry {
  10        struct map      *map;
  11        struct symbol   *sym;
  12        u64             ip;
  13};
  14
  15typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg);
  16
  17#ifdef HAVE_DWARF_UNWIND_SUPPORT
  18int 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
  23int libunwind__arch_reg_id(int regnum);
  24int unwind__prepare_access(struct thread *thread);
  25void unwind__flush_access(struct thread *thread);
  26void unwind__finish_access(struct thread *thread);
  27#else
  28static inline int unwind__prepare_access(struct thread *thread __maybe_unused)
  29{
  30        return 0;
  31}
  32
  33static inline void unwind__flush_access(struct thread *thread __maybe_unused) {}
  34static inline void unwind__finish_access(struct thread *thread __maybe_unused) {}
  35#endif
  36#else
  37static inline int
  38unwind__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
  47static inline int unwind__prepare_access(struct thread *thread __maybe_unused)
  48{
  49        return 0;
  50}
  51
  52static inline void unwind__flush_access(struct thread *thread __maybe_unused) {}
  53static inline void unwind__finish_access(struct thread *thread __maybe_unused) {}
  54#endif /* HAVE_DWARF_UNWIND_SUPPORT */
  55#endif /* __UNWIND_H */
  56