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 struct unwind_libunwind_ops { 18 int (*prepare_access)(struct thread *thread); 19 void (*flush_access)(struct thread *thread); 20 void (*finish_access)(struct thread *thread); 21 int (*get_entries)(unwind_entry_cb_t cb, void *arg, 22 struct thread *thread, 23 struct perf_sample *data, int max_stack); 24 }; 25 26 #ifdef HAVE_DWARF_UNWIND_SUPPORT 27 int unwind__get_entries(unwind_entry_cb_t cb, void *arg, 28 struct thread *thread, 29 struct perf_sample *data, int max_stack); 30 /* libunwind specific */ 31 #ifdef HAVE_LIBUNWIND_SUPPORT 32 #ifndef LIBUNWIND__ARCH_REG_ID 33 #define LIBUNWIND__ARCH_REG_ID(regnum) libunwind__arch_reg_id(regnum) 34 #endif 35 int LIBUNWIND__ARCH_REG_ID(int regnum); 36 int unwind__prepare_access(struct thread *thread, struct map *map); 37 void unwind__flush_access(struct thread *thread); 38 void unwind__finish_access(struct thread *thread); 39 #else 40 static inline int unwind__prepare_access(struct thread *thread __maybe_unused, 41 struct map *map __maybe_unused) 42 { 43 return 0; 44 } 45 46 static inline void unwind__flush_access(struct thread *thread __maybe_unused) {} 47 static inline void unwind__finish_access(struct thread *thread __maybe_unused) {} 48 #endif 49 #else 50 static inline int 51 unwind__get_entries(unwind_entry_cb_t cb __maybe_unused, 52 void *arg __maybe_unused, 53 struct thread *thread __maybe_unused, 54 struct perf_sample *data __maybe_unused, 55 int max_stack __maybe_unused) 56 { 57 return 0; 58 } 59 60 static inline int unwind__prepare_access(struct thread *thread __maybe_unused, 61 struct map *map __maybe_unused) 62 { 63 return 0; 64 } 65 66 static inline void unwind__flush_access(struct thread *thread __maybe_unused) {} 67 static inline void unwind__finish_access(struct thread *thread __maybe_unused) {} 68 #endif /* HAVE_DWARF_UNWIND_SUPPORT */ 69 #endif /* __UNWIND_H */ 70