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 36 #ifndef LIBUNWIND__ARCH_REG_SP 37 #define LIBUNWIND__ARCH_REG_SP PERF_REG_SP 38 #endif 39 40 #ifndef LIBUNWIND__ARCH_REG_IP 41 #define LIBUNWIND__ARCH_REG_IP PERF_REG_IP 42 #endif 43 44 int LIBUNWIND__ARCH_REG_ID(int regnum); 45 int unwind__prepare_access(struct thread *thread, struct map *map, 46 bool *initialized); 47 void unwind__flush_access(struct thread *thread); 48 void unwind__finish_access(struct thread *thread); 49 #else 50 static inline int unwind__prepare_access(struct thread *thread __maybe_unused, 51 struct map *map __maybe_unused, 52 bool *initialized __maybe_unused) 53 { 54 return 0; 55 } 56 57 static inline void unwind__flush_access(struct thread *thread __maybe_unused) {} 58 static inline void unwind__finish_access(struct thread *thread __maybe_unused) {} 59 #endif 60 #else 61 static inline int 62 unwind__get_entries(unwind_entry_cb_t cb __maybe_unused, 63 void *arg __maybe_unused, 64 struct thread *thread __maybe_unused, 65 struct perf_sample *data __maybe_unused, 66 int max_stack __maybe_unused) 67 { 68 return 0; 69 } 70 71 static inline int unwind__prepare_access(struct thread *thread __maybe_unused, 72 struct map *map __maybe_unused, 73 bool *initialized __maybe_unused) 74 { 75 return 0; 76 } 77 78 static inline void unwind__flush_access(struct thread *thread __maybe_unused) {} 79 static inline void unwind__finish_access(struct thread *thread __maybe_unused) {} 80 #endif /* HAVE_DWARF_UNWIND_SUPPORT */ 81 #endif /* __UNWIND_H */ 82