1//===-- RegisterContextPOSIX_arm.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_arm_h_
10#define liblldb_RegisterContextPOSIX_arm_h_
11
12#include "RegisterInfoInterface.h"
13#include "lldb-arm-register-enums.h"
14#include "lldb/Target/RegisterContext.h"
15#include "lldb/Utility/Log.h"
16
17class ProcessMonitor;
18
19class RegisterContextPOSIX_arm : public lldb_private::RegisterContext {
20public:
21  RegisterContextPOSIX_arm(lldb_private::Thread &thread,
22                           uint32_t concrete_frame_idx,
23                           lldb_private::RegisterInfoInterface *register_info);
24
25  ~RegisterContextPOSIX_arm() 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
50protected:
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  struct QReg {
67    uint8_t bytes[16];
68  };
69
70  struct FPU {
71    union {
72      uint32_t s[32];
73      uint64_t d[32];
74      QReg q[16]; // the 128-bit NEON registers
75    } floats;
76    uint32_t fpscr;
77  };
78
79  uint32_t m_gpr_arm[lldb_private::k_num_gpr_registers_arm]; // 32-bit general
80                                                             // purpose
81                                                             // registers.
82  RegInfo m_reg_info;
83  struct RegisterContextPOSIX_arm::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_arm_h_
107