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/lldb-private.h"
20 #include "lldb/Core/DataExtractor.h"
21 #include "lldb/Target/RegisterContext.h"
22 
23 class DynamicRegisterInfo;
24 
25 class RegisterContextMemory : public lldb_private::RegisterContext
26 {
27 public:
28     RegisterContextMemory (lldb_private::Thread &thread,
29                             uint32_t concrete_frame_idx,
30                             DynamicRegisterInfo &reg_info,
31                             lldb::addr_t reg_data_addr);
32 
33     ~RegisterContextMemory() override;
34 
35     void
36     InvalidateAllRegisters() override;
37 
38     size_t
39     GetRegisterCount() override;
40 
41     const lldb_private::RegisterInfo *
42     GetRegisterInfoAtIndex(size_t reg) override;
43 
44     size_t
45     GetRegisterSetCount() override;
46 
47     const lldb_private::RegisterSet *
48     GetRegisterSet(size_t reg_set) override;
49 
50     uint32_t
51     ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind, uint32_t num) override;
52 
53     //------------------------------------------------------------------
54     // If all of the thread register are in a contiguous buffer in
55     // memory, then the default ReadRegister/WriteRegister and
56     // ReadAllRegisterValues/WriteAllRegisterValues will work. If thread
57     // registers are not contiguous, clients will want to subclass this
58     // class and modify the read/write functions as needed.
59     //------------------------------------------------------------------
60 
61     bool
62     ReadRegister(const lldb_private::RegisterInfo *reg_info,
63                  lldb_private::RegisterValue &reg_value) override;
64 
65     bool
66     WriteRegister(const lldb_private::RegisterInfo *reg_info,
67                   const lldb_private::RegisterValue &reg_value) override;
68 
69     bool
70     ReadAllRegisterValues(lldb::DataBufferSP &data_sp) override;
71 
72     bool
73     WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override;
74 
75     void
76     SetAllRegisterData  (const lldb::DataBufferSP &data_sp);
77 
78 protected:
79     void
80     SetAllRegisterValid (bool b);
81 
82     DynamicRegisterInfo &m_reg_infos;
83     std::vector<bool> m_reg_valid;
84     lldb_private::DataExtractor m_reg_data;
85     lldb::addr_t m_reg_data_addr; // If this is valid, then we have a register context that is stored in memmory
86 
87 private:
88     DISALLOW_COPY_AND_ASSIGN (RegisterContextMemory);
89 };
90 
91 #endif // lldb_RegisterContextMemory_h_
92