Commit | Line | Data |
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f6d72532 HK |
1 | #include "unwind.h" |
2 | #include "thread.h" | |
d64ec10e HK |
3 | #include "session.h" |
4 | #include "debug.h" | |
5 | #include "arch/common.h" | |
f6d72532 HK |
6 | |
7 | struct unwind_libunwind_ops __weak *local_unwind_libunwind_ops; | |
8 | ||
9 | static void unwind__register_ops(struct thread *thread, | |
10 | struct unwind_libunwind_ops *ops) | |
11 | { | |
12 | thread->unwind_libunwind_ops = ops; | |
13 | } | |
14 | ||
d64ec10e | 15 | int unwind__prepare_access(struct thread *thread, struct map *map) |
f6d72532 | 16 | { |
d64ec10e HK |
17 | const char *arch; |
18 | enum dso_type dso_type; | |
19 | ||
20 | if (thread->addr_space) { | |
21 | pr_debug("unwind: thread map already set, dso=%s\n", | |
22 | map->dso->name); | |
23 | return 0; | |
24 | } | |
25 | ||
26 | /* env->arch is NULL for live-mode (i.e. perf top) */ | |
27 | if (!thread->mg->machine->env || !thread->mg->machine->env->arch) | |
28 | goto out_register; | |
29 | ||
30 | dso_type = dso__type(map->dso, thread->mg->machine); | |
31 | if (dso_type == DSO__TYPE_UNKNOWN) | |
32 | return 0; | |
33 | ||
34 | arch = normalize_arch(thread->mg->machine->env->arch); | |
35 | pr_debug("unwind: target platform=%s\n", arch); | |
36 | out_register: | |
f6d72532 HK |
37 | unwind__register_ops(thread, local_unwind_libunwind_ops); |
38 | ||
39 | return thread->unwind_libunwind_ops->prepare_access(thread); | |
40 | } | |
41 | ||
42 | void unwind__flush_access(struct thread *thread) | |
43 | { | |
44 | if (thread->unwind_libunwind_ops) | |
45 | thread->unwind_libunwind_ops->flush_access(thread); | |
46 | } | |
47 | ||
48 | void unwind__finish_access(struct thread *thread) | |
49 | { | |
50 | if (thread->unwind_libunwind_ops) | |
51 | thread->unwind_libunwind_ops->finish_access(thread); | |
52 | } | |
53 | ||
54 | int unwind__get_entries(unwind_entry_cb_t cb, void *arg, | |
55 | struct thread *thread, | |
56 | struct perf_sample *data, int max_stack) | |
57 | { | |
58 | if (thread->unwind_libunwind_ops) | |
59 | return thread->unwind_libunwind_ops->get_entries(cb, arg, thread, data, max_stack); | |
60 | return 0; | |
61 | } |