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//===-- UnwindMacOSXFrameBackchain.h ----------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef lldb_UnwindMacOSXFrameBackchain_h_
#define lldb_UnwindMacOSXFrameBackchain_h_
// C Includes
// C++ Includes
#include <vector>
// Other libraries and framework includes
// Project includes
#include "lldb/lldb-private.h"
#include "lldb/Target/Unwind.h"
class UnwindMacOSXFrameBackchain : public lldb_private::Unwind
{
public:
UnwindMacOSXFrameBackchain (lldb_private::Thread &thread);
~UnwindMacOSXFrameBackchain() override = default;
protected:
void
DoClear() override
{
m_cursors.clear();
}
uint32_t
DoGetFrameCount() override;
bool
DoGetFrameInfoAtIndex(uint32_t frame_idx,
lldb::addr_t& cfa,
lldb::addr_t& pc) override;
lldb::RegisterContextSP
DoCreateRegisterContextForFrame(lldb_private::StackFrame *frame) override;
friend class RegisterContextMacOSXFrameBackchain;
struct Cursor
{
lldb::addr_t pc; // Program counter
lldb::addr_t fp; // Frame pointer for us with backchain
};
private:
std::vector<Cursor> m_cursors;
size_t
GetStackFrameData_i386 (const lldb_private::ExecutionContext &exe_ctx);
size_t
GetStackFrameData_x86_64 (const lldb_private::ExecutionContext &exe_ctx);
//------------------------------------------------------------------
// For UnwindMacOSXFrameBackchain only
//------------------------------------------------------------------
DISALLOW_COPY_AND_ASSIGN (UnwindMacOSXFrameBackchain);
};
#endif // lldb_UnwindMacOSXFrameBackchain_h_
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