1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __UNWIND_H
 3#define __UNWIND_H
 4
 5#include <linux/compiler.h>
 6#include <linux/types.h>
 7
 8struct map;
 9struct map_groups;
10struct perf_sample;
11struct symbol;
12struct thread;
13
14struct unwind_entry {
15	struct map	*map;
16	struct symbol	*sym;
17	u64		ip;
18};
19
20typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg);
21
22struct unwind_libunwind_ops {
23	int (*prepare_access)(struct map_groups *mg);
24	void (*flush_access)(struct map_groups *mg);
25	void (*finish_access)(struct map_groups *mg);
26	int (*get_entries)(unwind_entry_cb_t cb, void *arg,
27			   struct thread *thread,
28			   struct perf_sample *data, int max_stack);
29};
30
31#ifdef HAVE_DWARF_UNWIND_SUPPORT
32int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
33			struct thread *thread,
34			struct perf_sample *data, int max_stack);
35/* libunwind specific */
36#ifdef HAVE_LIBUNWIND_SUPPORT
37#ifndef LIBUNWIND__ARCH_REG_ID
38#define LIBUNWIND__ARCH_REG_ID(regnum) libunwind__arch_reg_id(regnum)
39#endif
40
41#ifndef LIBUNWIND__ARCH_REG_SP
42#define LIBUNWIND__ARCH_REG_SP PERF_REG_SP
43#endif
44
45#ifndef LIBUNWIND__ARCH_REG_IP
46#define LIBUNWIND__ARCH_REG_IP PERF_REG_IP
47#endif
48
49int LIBUNWIND__ARCH_REG_ID(int regnum);
50int unwind__prepare_access(struct map_groups *mg, struct map *map,
51			   bool *initialized);
52void unwind__flush_access(struct map_groups *mg);
53void unwind__finish_access(struct map_groups *mg);
54#else
55static inline int unwind__prepare_access(struct map_groups *mg __maybe_unused,
56					 struct map *map __maybe_unused,
57					 bool *initialized __maybe_unused)
58{
59	return 0;
60}
61
62static inline void unwind__flush_access(struct map_groups *mg __maybe_unused) {}
63static inline void unwind__finish_access(struct map_groups *mg __maybe_unused) {}
64#endif
65#else
66static inline int
67unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
68		    void *arg __maybe_unused,
69		    struct thread *thread __maybe_unused,
70		    struct perf_sample *data __maybe_unused,
71		    int max_stack __maybe_unused)
72{
73	return 0;
74}
75
76static inline int unwind__prepare_access(struct map_groups *mg __maybe_unused,
77					 struct map *map __maybe_unused,
78					 bool *initialized __maybe_unused)
79{
80	return 0;
81}
82
83static inline void unwind__flush_access(struct map_groups *mg __maybe_unused) {}
84static inline void unwind__finish_access(struct map_groups *mg __maybe_unused) {}
85#endif /* HAVE_DWARF_UNWIND_SUPPORT */
86#endif /* __UNWIND_H */

 
 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
17struct 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
27int 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
44int LIBUNWIND__ARCH_REG_ID(int regnum);
45int unwind__prepare_access(struct thread *thread, struct map *map,
46			   bool *initialized);
47void unwind__flush_access(struct thread *thread);
48void unwind__finish_access(struct thread *thread);
49#else
50static 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
57static inline void unwind__flush_access(struct thread *thread __maybe_unused) {}
58static inline void unwind__finish_access(struct thread *thread __maybe_unused) {}
59#endif
60#else
61static inline int
62unwind__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
71static 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
78static inline void unwind__flush_access(struct thread *thread __maybe_unused) {}
79static inline void unwind__finish_access(struct thread *thread __maybe_unused) {}
80#endif /* HAVE_DWARF_UNWIND_SUPPORT */
81#endif /* __UNWIND_H */