1 //===-- UnwindMacOSXFrameBackchain.h ----------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef lldb_UnwindMacOSXFrameBackchain_h_
11 #define lldb_UnwindMacOSXFrameBackchain_h_
17 // Other libraries and framework includes
19 #include "lldb/Target/Unwind.h"
20 #include "lldb/lldb-private.h"
22 class UnwindMacOSXFrameBackchain : public lldb_private::Unwind {
24 UnwindMacOSXFrameBackchain(lldb_private::Thread &thread);
26 ~UnwindMacOSXFrameBackchain() override = default;
29 void DoClear() override { m_cursors.clear(); }
31 uint32_t DoGetFrameCount() override;
33 bool DoGetFrameInfoAtIndex(uint32_t frame_idx, lldb::addr_t &cfa,
34 lldb::addr_t &pc) override;
36 lldb::RegisterContextSP
37 DoCreateRegisterContextForFrame(lldb_private::StackFrame *frame) override;
39 friend class RegisterContextMacOSXFrameBackchain;
42 lldb::addr_t pc; // Program counter
43 lldb::addr_t fp; // Frame pointer for us with backchain
47 std::vector<Cursor> m_cursors;
49 size_t GetStackFrameData_i386(const lldb_private::ExecutionContext &exe_ctx);
52 GetStackFrameData_x86_64(const lldb_private::ExecutionContext &exe_ctx);
54 //------------------------------------------------------------------
55 // For UnwindMacOSXFrameBackchain only
56 //------------------------------------------------------------------
57 DISALLOW_COPY_AND_ASSIGN(UnwindMacOSXFrameBackchain);
60 #endif // lldb_UnwindMacOSXFrameBackchain_h_