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#include "util/map_symbol.h"
 8
 9struct maps;
10struct perf_sample;
 
11struct thread;
12
13struct unwind_entry {
14	struct map_symbol ms;
15	u64		  ip;
 
16};
17
18typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg);
19
20struct 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);
27};
28
29#ifdef HAVE_DWARF_UNWIND_SUPPORT
30int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
31			struct thread *thread,
32			struct perf_sample *data, int max_stack);
33/* libunwind specific */
34#ifdef HAVE_LIBUNWIND_SUPPORT
35#ifndef LIBUNWIND__ARCH_REG_ID
36#define LIBUNWIND__ARCH_REG_ID(regnum) libunwind__arch_reg_id(regnum)
37#endif
38
39#ifndef LIBUNWIND__ARCH_REG_SP
40#define LIBUNWIND__ARCH_REG_SP PERF_REG_SP
41#endif
42
43#ifndef LIBUNWIND__ARCH_REG_IP
44#define LIBUNWIND__ARCH_REG_IP PERF_REG_IP
45#endif
46
47int LIBUNWIND__ARCH_REG_ID(int regnum);
48int unwind__prepare_access(struct maps *maps, struct map *map, bool *initialized);
49void unwind__flush_access(struct maps *maps);
50void unwind__finish_access(struct maps *maps);
 
51#else
52static inline int unwind__prepare_access(struct maps *maps __maybe_unused,
53					 struct map *map __maybe_unused,
54					 bool *initialized __maybe_unused)
55{
56	return 0;
57}
58
59static inline void unwind__flush_access(struct maps *maps __maybe_unused) {}
60static inline void unwind__finish_access(struct maps *maps __maybe_unused) {}
61#endif
62#else
63static inline int
64unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
65		    void *arg __maybe_unused,
66		    struct thread *thread __maybe_unused,
67		    struct perf_sample *data __maybe_unused,
68		    int max_stack __maybe_unused)
69{
70	return 0;
71}
72
73static inline int unwind__prepare_access(struct maps *maps __maybe_unused,
74					 struct map *map __maybe_unused,
75					 bool *initialized __maybe_unused)
76{
77	return 0;
78}
79
80static inline void unwind__flush_access(struct maps *maps __maybe_unused) {}
81static inline void unwind__finish_access(struct maps *maps __maybe_unused) {}
82#endif /* HAVE_DWARF_UNWIND_SUPPORT */
83#endif /* __UNWIND_H */

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