tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 */