1 //===-- RegisterContextPOSIX_arm.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_RegisterContextPOSIX_arm_h_
11 #define liblldb_RegisterContextPOSIX_arm_h_
12 
13 // C Includes
14 // C++ Includes
15 // Other libraries and framework includes
16 // Project includes
17 #include "RegisterInfoInterface.h"
18 #include "lldb-arm-register-enums.h"
19 #include "lldb/Core/Log.h"
20 #include "lldb/Target/RegisterContext.h"
21 
22 class ProcessMonitor;
23 
24 class RegisterContextPOSIX_arm : public lldb_private::RegisterContext {
25 public:
26   RegisterContextPOSIX_arm(lldb_private::Thread &thread,
27                            uint32_t concrete_frame_idx,
28                            lldb_private::RegisterInfoInterface *register_info);
29 
30   ~RegisterContextPOSIX_arm() override;
31 
32   void Invalidate();
33 
34   void InvalidateAllRegisters() override;
35 
36   size_t GetRegisterCount() override;
37 
38   virtual size_t GetGPRSize();
39 
40   virtual unsigned GetRegisterSize(unsigned reg);
41 
42   virtual unsigned GetRegisterOffset(unsigned reg);
43 
44   const lldb_private::RegisterInfo *GetRegisterInfoAtIndex(size_t reg) override;
45 
46   size_t GetRegisterSetCount() override;
47 
48   const lldb_private::RegisterSet *GetRegisterSet(size_t set) override;
49 
50   const char *GetRegisterName(unsigned reg);
51 
52   uint32_t ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,
53                                                uint32_t num) override;
54 
55 protected:
56   struct RegInfo {
57     uint32_t num_registers;
58     uint32_t num_gpr_registers;
59     uint32_t num_fpr_registers;
60 
61     uint32_t last_gpr;
62     uint32_t first_fpr;
63     uint32_t last_fpr;
64 
65     uint32_t first_fpr_v;
66     uint32_t last_fpr_v;
67 
68     uint32_t gpr_flags;
69   };
70 
71   struct QReg {
72     uint8_t bytes[16];
73   };
74 
75   struct FPU {
76     union {
77       uint32_t s[32];
78       uint64_t d[32];
79       QReg q[16]; // the 128-bit NEON registers
80     } floats;
81     uint32_t fpscr;
82   };
83 
84   uint32_t m_gpr_arm[lldb_private::k_num_gpr_registers_arm]; // 32-bit general
85                                                              // purpose
86                                                              // registers.
87   RegInfo m_reg_info;
88   struct RegisterContextPOSIX_arm::FPU
89       m_fpr; // floating-point registers including extended register sets.
90   std::unique_ptr<lldb_private::RegisterInfoInterface>
91       m_register_info_ap; // Register Info Interface (FreeBSD or Linux)
92 
93   // Determines if an extended register set is supported on the processor
94   // running the inferior process.
95   virtual bool IsRegisterSetAvailable(size_t set_index);
96 
97   virtual const lldb_private::RegisterInfo *GetRegisterInfo();
98 
99   bool IsGPR(unsigned reg);
100 
101   bool IsFPR(unsigned reg);
102 
103   lldb::ByteOrder GetByteOrder();
104 
105   virtual bool ReadGPR() = 0;
106   virtual bool ReadFPR() = 0;
107   virtual bool WriteGPR() = 0;
108   virtual bool WriteFPR() = 0;
109 };
110 
111 #endif // liblldb_RegisterContextPOSIX_arm_h_
112