Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

1 files changed, 42 insertions, 0 deletions

diff --git a/gnu/llvm/lldb/source/Plugins/Process/Utility/HistoryUnwind.h b/gnu/llvm/lldb/source/Plugins/Process/Utility/HistoryUnwind.h
new file mode 100644
index 00000000000..4d16608bd8c
--- /dev/null
+++ b/gnu/llvm/lldb/source/Plugins/Process/Utility/HistoryUnwind.h
@@ -0,0 +1,42 @@
+//===-- HistoryUnwind.h -----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_HistoryUnwind_h_
+#define liblldb_HistoryUnwind_h_
+
+#include <vector>
+
+#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);
+
+  ~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,
+                             bool &behaves_like_zeroth_frame) override;
+  uint32_t DoGetFrameCount() override;
+
+private:
+  std::vector<lldb::addr_t> m_pcs;
+};
+
+} // namespace lldb_private
+
+#endif // liblldb_HistoryUnwind_h_