Unwind.h revision 24943d2ee8bfaa7cf5893e4709143924157a5c1e 
1//===-- Unwind.h ------------------------------------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef liblldb_Unwind_h_
11#define liblldb_Unwind_h_
12
13// C Includes
14// C++ Includes
15// Other libraries and framework includes
16// Project includes
17#include "lldb/lldb-private.h"
18
19namespace lldb_private {
20
21class Unwind
22{
23protected:
24    //------------------------------------------------------------------
25    // Classes that inherit from Unwind can see and modify these
26    //------------------------------------------------------------------
27    Unwind(Thread &thread) :
28        m_thread (thread)
29    {
30    }
31
32public:
33    virtual
34    ~Unwind()
35    {
36    }
37
38    virtual void
39    Clear() = 0;
40
41    virtual uint32_t
42    GetFrameCount() = 0;
43
44    virtual bool
45    GetFrameInfoAtIndex (uint32_t frame_idx,
46                         lldb::addr_t& cfa,
47                         lldb::addr_t& pc) = 0;
48
49    virtual RegisterContext *
50    CreateRegisterContextForFrame (StackFrame *frame) = 0;
51
52    Thread &
53    GetThread()
54    {
55        return m_thread;
56    }
57
58protected:
59    //------------------------------------------------------------------
60    // Classes that inherit from Unwind can see and modify these
61    //------------------------------------------------------------------
62    Thread &m_thread;
63private:
64    DISALLOW_COPY_AND_ASSIGN (Unwind);
65};
66
67} // namespace lldb_private
68
69#endif  // liblldb_Unwind_h_
70