1 //===-- RegisterContextPOSIX_arm64.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 liblldb_RegisterContextPOSIX_arm64_h_
10 #define liblldb_RegisterContextPOSIX_arm64_h_
11 
12 #include "RegisterInfoInterface.h"
13 #include "lldb-arm64-register-enums.h"
14 #include "lldb/Target/RegisterContext.h"
15 #include "lldb/Utility/Log.h"
16 
17 class ProcessMonitor;
18 
19 class RegisterContextPOSIX_arm64 : public lldb_private::RegisterContext {
20 public:
21   RegisterContextPOSIX_arm64(
22       lldb_private::Thread &thread, uint32_t concrete_frame_idx,
23       lldb_private::RegisterInfoInterface *register_info);
24 
25   ~RegisterContextPOSIX_arm64() override;
26 
27   void Invalidate();
28 
29   void InvalidateAllRegisters() override;
30 
31   size_t GetRegisterCount() override;
32 
33   virtual size_t GetGPRSize();
34 
35   virtual unsigned GetRegisterSize(unsigned reg);
36 
37   virtual unsigned GetRegisterOffset(unsigned reg);
38 
39   const lldb_private::RegisterInfo *GetRegisterInfoAtIndex(size_t reg) override;
40 
41   size_t GetRegisterSetCount() override;
42 
43   const lldb_private::RegisterSet *GetRegisterSet(size_t set) override;
44 
45   const char *GetRegisterName(unsigned reg);
46 
47   uint32_t ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,
48                                                uint32_t num) override;
49 
50 protected:
51   struct RegInfo {
52     uint32_t num_registers;
53     uint32_t num_gpr_registers;
54     uint32_t num_fpr_registers;
55 
56     uint32_t last_gpr;
57     uint32_t first_fpr;
58     uint32_t last_fpr;
59 
60     uint32_t first_fpr_v;
61     uint32_t last_fpr_v;
62 
63     uint32_t gpr_flags;
64   };
65 
66   // based on RegisterContextDarwin_arm64.h
67   struct VReg {
68     uint8_t bytes[16];
69   };
70 
71   // based on RegisterContextDarwin_arm64.h
72   struct FPU {
73     VReg v[32];
74     uint32_t fpsr;
75     uint32_t fpcr;
76   };
77 
78   uint64_t m_gpr_arm64[lldb_private::k_num_gpr_registers_arm64]; // 64-bit
79                                                                  // general
80                                                                  // purpose
81                                                                  // registers.
82   RegInfo m_reg_info;
83   struct RegisterContextPOSIX_arm64::FPU
84       m_fpr; // floating-point registers including extended register sets.
85   std::unique_ptr<lldb_private::RegisterInfoInterface>
86       m_register_info_up; // Register Info Interface (FreeBSD or Linux)
87 
88   // Determines if an extended register set is supported on the processor
89   // running the inferior process.
90   virtual bool IsRegisterSetAvailable(size_t set_index);
91 
92   virtual const lldb_private::RegisterInfo *GetRegisterInfo();
93 
94   bool IsGPR(unsigned reg);
95 
96   bool IsFPR(unsigned reg);
97 
98   lldb::ByteOrder GetByteOrder();
99 
100   virtual bool ReadGPR() = 0;
101   virtual bool ReadFPR() = 0;
102   virtual bool WriteGPR() = 0;
103   virtual bool WriteFPR() = 0;
104 };
105 
106 #endif // liblldb_RegisterContextPOSIX_arm64_h_
107