Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/lldb/source/Plugins/Process/Utility/HistoryUnwind.h

@@ -0,0 +1,48 @@
+//===-- HistoryUnwind.h -----------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_HistoryUnwind_h_
+#define liblldb_HistoryUnwind_h_
+
+// C Includes
+// C++ Includes
+#include <vector>
+
+// Other libraries and framework includes
+// Project includes
+#include "lldb/Target/Unwind.h"
+#include "lldb/lldb-private.h"
+
+namespace lldb_private {
+
+class HistoryUnwind : public lldb_private::Unwind {
+public:
+  HistoryUnwind(Thread &thread, std::vector<lldb::addr_t> pcs,
+                bool stop_id_is_valid);
+
+  ~HistoryUnwind() override;
+
+protected:
+  void DoClear() override;
+
+  lldb::RegisterContextSP
+  DoCreateRegisterContextForFrame(StackFrame *frame) override;
+
+  bool DoGetFrameInfoAtIndex(uint32_t frame_idx, lldb::addr_t &cfa,
+                             lldb::addr_t &pc) override;
+  uint32_t DoGetFrameCount() override;
+
+private:
+  std::vector<lldb::addr_t> m_pcs;
+  bool m_stop_id_is_valid;
+};
+
+} // namespace lldb_private
+
+#endif // liblldb_HistoryUnwind_h_