1 //===-- RegisterContextMemory.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 lldb_RegisterContextMemory_h_
11 #define lldb_RegisterContextMemory_h_
12 
13 // C Includes
14 // C++ Includes
15 #include <vector>
16 
17 // Other libraries and framework includes
18 // Project includes
19 #include "lldb/Core/DataExtractor.h"
20 #include "lldb/Target/RegisterContext.h"
21 #include "lldb/lldb-private.h"
22 
23 class DynamicRegisterInfo;
24 
25 class RegisterContextMemory : public lldb_private::RegisterContext {
26 public:
27   RegisterContextMemory(lldb_private::Thread &thread,
28                         uint32_t concrete_frame_idx,
29                         DynamicRegisterInfo &reg_info,
30                         lldb::addr_t reg_data_addr);
31 
32   ~RegisterContextMemory() override;
33 
34   void InvalidateAllRegisters() override;
35 
36   size_t GetRegisterCount() override;
37 
38   const lldb_private::RegisterInfo *GetRegisterInfoAtIndex(size_t reg) override;
39 
40   size_t GetRegisterSetCount() override;
41 
42   const lldb_private::RegisterSet *GetRegisterSet(size_t reg_set) override;
43 
44   uint32_t ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,
45                                                uint32_t num) override;
46 
47   //------------------------------------------------------------------
48   // If all of the thread register are in a contiguous buffer in
49   // memory, then the default ReadRegister/WriteRegister and
50   // ReadAllRegisterValues/WriteAllRegisterValues will work. If thread
51   // registers are not contiguous, clients will want to subclass this
52   // class and modify the read/write functions as needed.
53   //------------------------------------------------------------------
54 
55   bool ReadRegister(const lldb_private::RegisterInfo *reg_info,
56                     lldb_private::RegisterValue &reg_value) override;
57 
58   bool WriteRegister(const lldb_private::RegisterInfo *reg_info,
59                      const lldb_private::RegisterValue &reg_value) override;
60 
61   bool ReadAllRegisterValues(lldb::DataBufferSP &data_sp) override;
62 
63   bool WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override;
64 
65   void SetAllRegisterData(const lldb::DataBufferSP &data_sp);
66 
67 protected:
68   void SetAllRegisterValid(bool b);
69 
70   DynamicRegisterInfo &m_reg_infos;
71   std::vector<bool> m_reg_valid;
72   lldb_private::DataExtractor m_reg_data;
73   lldb::addr_t m_reg_data_addr; // If this is valid, then we have a register
74                                 // context that is stored in memmory
75 
76 private:
77   DISALLOW_COPY_AND_ASSIGN(RegisterContextMemory);
78 };
79 
80 #endif // lldb_RegisterContextMemory_h_
81