//===-- UnwindAssembly.h --------------------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef utility_UnwindAssembly_h_
#define utility_UnwindAssembly_h_

#include "lldb/lldb-private.h"
#include "lldb/Core/ArchSpec.h"
#include "lldb/Core/PluginInterface.h"

namespace lldb_private {

class UnwindAssembly :
   public std::enable_shared_from_this<UnwindAssembly>,
   public PluginInterface
{
public:
    static lldb::UnwindAssemblySP
    FindPlugin (const ArchSpec &arch);

    ~UnwindAssembly() override;

    virtual bool
    GetNonCallSiteUnwindPlanFromAssembly (AddressRange& func, 
                                          Thread& thread, 
                                          UnwindPlan& unwind_plan) = 0;

    virtual bool
    AugmentUnwindPlanFromCallSite (AddressRange& func,
                                   Thread& thread,
                                   UnwindPlan& unwind_plan) = 0;

    virtual bool
    GetFastUnwindPlan (AddressRange& func, 
                       Thread& thread, 
                       UnwindPlan &unwind_plan) = 0;

    // thread may be NULL in which case we only use the Target (e.g. if this is called pre-process-launch).
    virtual bool
    FirstNonPrologueInsn (AddressRange& func, 
                          const lldb_private::ExecutionContext &exe_ctx,
                          Address& first_non_prologue_insn) = 0;

protected:
    UnwindAssembly (const ArchSpec &arch);
    ArchSpec m_arch;

private:
    UnwindAssembly(); // Outlaw default constructor
    DISALLOW_COPY_AND_ASSIGN (UnwindAssembly);
};

} // namespace lldb_private

#endif // utility_UnwindAssembly_h_
