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-rw-r--r--tools/perf/util/unwind.h35
1 files changed, 35 insertions, 0 deletions
diff --git a/tools/perf/util/unwind.h b/tools/perf/util/unwind.h
new file mode 100644
index 000000000000..a78c8b303bb5
--- /dev/null
+++ b/tools/perf/util/unwind.h
@@ -0,0 +1,35 @@
+#ifndef __UNWIND_H
+#define __UNWIND_H
+
+#include "types.h"
+#include "event.h"
+#include "symbol.h"
+
+struct unwind_entry {
+ struct map *map;
+ struct symbol *sym;
+ u64 ip;
+};
+
+typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg);
+
+#ifndef NO_LIBUNWIND_SUPPORT
+int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
+ struct machine *machine,
+ struct thread *thread,
+ u64 sample_uregs,
+ struct perf_sample *data);
+int unwind__arch_reg_id(int regnum);
+#else
+static inline int
+unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
+ void *arg __maybe_unused,
+ struct machine *machine __maybe_unused,
+ struct thread *thread __maybe_unused,
+ u64 sample_uregs __maybe_unused,
+ struct perf_sample *data __maybe_unused)
+{
+ return 0;
+}
+#endif /* NO_LIBUNWIND_SUPPORT */
+#endif /* __UNWIND_H */