1 //===-- UnwindAssembly.h --------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef LLDB_TARGET_UNWINDASSEMBLY_H
10 #define LLDB_TARGET_UNWINDASSEMBLY_H
11 
12 #include "lldb/Core/PluginInterface.h"
13 #include "lldb/Utility/ArchSpec.h"
14 #include "lldb/lldb-private.h"
15 
16 namespace lldb_private {
17 
18 class UnwindAssembly : public std::enable_shared_from_this<UnwindAssembly>,
19                        public PluginInterface {
20 public:
21   static lldb::UnwindAssemblySP FindPlugin(const ArchSpec &arch);
22 
23   ~UnwindAssembly() override;
24 
25   virtual bool
26   GetNonCallSiteUnwindPlanFromAssembly(AddressRange &func, Thread &thread,
27                                        UnwindPlan &unwind_plan) = 0;
28 
29   virtual bool AugmentUnwindPlanFromCallSite(AddressRange &func, Thread &thread,
30                                              UnwindPlan &unwind_plan) = 0;
31 
32   virtual bool GetFastUnwindPlan(AddressRange &func, Thread &thread,
33                                  UnwindPlan &unwind_plan) = 0;
34 
35   // thread may be NULL in which case we only use the Target (e.g. if this is
36   // called pre-process-launch).
37   virtual bool
38   FirstNonPrologueInsn(AddressRange &func,
39                        const lldb_private::ExecutionContext &exe_ctx,
40                        Address &first_non_prologue_insn) = 0;
41 
42 protected:
43   UnwindAssembly(const ArchSpec &arch);
44   ArchSpec m_arch;
45 
46 private:
47   UnwindAssembly() = delete;
48   UnwindAssembly(const UnwindAssembly &) = delete;
49   const UnwindAssembly &operator=(const UnwindAssembly &) = delete;
50 };
51 
52 } // namespace lldb_private
53 
54 #endif // LLDB_TARGET_UNWINDASSEMBLY_H
55