1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <linux/compiler.h>
6 #include <linux/types.h>
7 #include "util/map_symbol.h"
18 typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg);
20 struct unwind_libunwind_ops {
21 int (*prepare_access)(struct maps *maps);
22 void (*flush_access)(struct maps *maps);
23 void (*finish_access)(struct maps *maps);
24 int (*get_entries)(unwind_entry_cb_t cb, void *arg,
25 struct thread *thread,
26 struct perf_sample *data, int max_stack, bool best_effort);
29 #ifdef HAVE_DWARF_UNWIND_SUPPORT
31 * When best_effort is set, don't report errors and fail silently. This could
32 * be expanded in the future to be more permissive about things other than
35 int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
36 struct thread *thread,
37 struct perf_sample *data, int max_stack,
39 /* libunwind specific */
40 #ifdef HAVE_LIBUNWIND_SUPPORT
41 #ifndef LIBUNWIND__ARCH_REG_ID
42 #define LIBUNWIND__ARCH_REG_ID(regnum) libunwind__arch_reg_id(regnum)
45 #ifndef LIBUNWIND__ARCH_REG_SP
46 #define LIBUNWIND__ARCH_REG_SP PERF_REG_SP
49 #ifndef LIBUNWIND__ARCH_REG_IP
50 #define LIBUNWIND__ARCH_REG_IP PERF_REG_IP
53 int LIBUNWIND__ARCH_REG_ID(int regnum);
54 int unwind__prepare_access(struct maps *maps, struct map *map, bool *initialized);
55 void unwind__flush_access(struct maps *maps);
56 void unwind__finish_access(struct maps *maps);
58 static inline int unwind__prepare_access(struct maps *maps __maybe_unused,
59 struct map *map __maybe_unused,
60 bool *initialized __maybe_unused)
65 static inline void unwind__flush_access(struct maps *maps __maybe_unused) {}
66 static inline void unwind__finish_access(struct maps *maps __maybe_unused) {}
70 unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
71 void *arg __maybe_unused,
72 struct thread *thread __maybe_unused,
73 struct perf_sample *data __maybe_unused,
74 int max_stack __maybe_unused,
75 bool best_effort __maybe_unused)
80 static inline int unwind__prepare_access(struct maps *maps __maybe_unused,
81 struct map *map __maybe_unused,
82 bool *initialized __maybe_unused)
87 static inline void unwind__flush_access(struct maps *maps __maybe_unused) {}
88 static inline void unwind__finish_access(struct maps *maps __maybe_unused) {}
89 #endif /* HAVE_DWARF_UNWIND_SUPPORT */
90 #endif /* __UNWIND_H */