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