xref: /openbmc/linux/tools/perf/util/unwind.h (revision f83c04156c1483f16ac548516f41212cf244e441)
171ad0f5eSJiri Olsa #ifndef __UNWIND_H
271ad0f5eSJiri Olsa #define __UNWIND_H
371ad0f5eSJiri Olsa 
4d944c4eeSBorislav Petkov #include <linux/types.h>
571ad0f5eSJiri Olsa #include "event.h"
671ad0f5eSJiri Olsa #include "symbol.h"
766f066d8SNamhyung Kim #include "thread.h"
871ad0f5eSJiri Olsa 
971ad0f5eSJiri Olsa struct unwind_entry {
1071ad0f5eSJiri Olsa 	struct map	*map;
1171ad0f5eSJiri Olsa 	struct symbol	*sym;
1271ad0f5eSJiri Olsa 	u64		ip;
1371ad0f5eSJiri Olsa };
1471ad0f5eSJiri Olsa 
1571ad0f5eSJiri Olsa typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg);
1671ad0f5eSJiri Olsa 
17*f83c0415SHe Kuang struct unwind_libunwind_ops {
18*f83c0415SHe Kuang 	int (*prepare_access)(struct thread *thread);
19*f83c0415SHe Kuang 	void (*flush_access)(struct thread *thread);
20*f83c0415SHe Kuang 	void (*finish_access)(struct thread *thread);
21*f83c0415SHe Kuang 	int (*get_entries)(unwind_entry_cb_t cb, void *arg,
22*f83c0415SHe Kuang 			   struct thread *thread,
23*f83c0415SHe Kuang 			   struct perf_sample *data, int max_stack);
24*f83c0415SHe Kuang };
25*f83c0415SHe Kuang 
269ff125d1SJiri Olsa #ifdef HAVE_DWARF_UNWIND_SUPPORT
2771ad0f5eSJiri Olsa int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
2871ad0f5eSJiri Olsa 			struct thread *thread,
2937676af1SArnaldo Carvalho de Melo 			struct perf_sample *data, int max_stack);
309ff125d1SJiri Olsa /* libunwind specific */
319ff125d1SJiri Olsa #ifdef HAVE_LIBUNWIND_SUPPORT
32ea3da69dSJiri Olsa int libunwind__arch_reg_id(int regnum);
3366f066d8SNamhyung Kim int unwind__prepare_access(struct thread *thread);
34380b5143SNamhyung Kim void unwind__flush_access(struct thread *thread);
3566f066d8SNamhyung Kim void unwind__finish_access(struct thread *thread);
3666f066d8SNamhyung Kim #else
3766f066d8SNamhyung Kim static inline int unwind__prepare_access(struct thread *thread __maybe_unused)
3866f066d8SNamhyung Kim {
3966f066d8SNamhyung Kim 	return 0;
4066f066d8SNamhyung Kim }
4166f066d8SNamhyung Kim 
42380b5143SNamhyung Kim static inline void unwind__flush_access(struct thread *thread __maybe_unused) {}
4366f066d8SNamhyung Kim static inline void unwind__finish_access(struct thread *thread __maybe_unused) {}
449ff125d1SJiri Olsa #endif
4571ad0f5eSJiri Olsa #else
4671ad0f5eSJiri Olsa static inline int
471d037ca1SIrina Tirdea unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
481d037ca1SIrina Tirdea 		    void *arg __maybe_unused,
491d037ca1SIrina Tirdea 		    struct thread *thread __maybe_unused,
5037676af1SArnaldo Carvalho de Melo 		    struct perf_sample *data __maybe_unused,
5137676af1SArnaldo Carvalho de Melo 		    int max_stack __maybe_unused)
5271ad0f5eSJiri Olsa {
5371ad0f5eSJiri Olsa 	return 0;
5471ad0f5eSJiri Olsa }
5566f066d8SNamhyung Kim 
5666f066d8SNamhyung Kim static inline int unwind__prepare_access(struct thread *thread __maybe_unused)
5766f066d8SNamhyung Kim {
5866f066d8SNamhyung Kim 	return 0;
5966f066d8SNamhyung Kim }
6066f066d8SNamhyung Kim 
61380b5143SNamhyung Kim static inline void unwind__flush_access(struct thread *thread __maybe_unused) {}
6266f066d8SNamhyung Kim static inline void unwind__finish_access(struct thread *thread __maybe_unused) {}
639ff125d1SJiri Olsa #endif /* HAVE_DWARF_UNWIND_SUPPORT */
6471ad0f5eSJiri Olsa #endif /* __UNWIND_H */
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