RegisterContextMinidump_ARM.h revision 360784 
1//===-- RegisterContextMinidump_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_RegisterContextMinidump_ARM_h_
10#define liblldb_RegisterContextMinidump_ARM_h_
11
12#include "MinidumpTypes.h"
13
14#include "Plugins/Process/Utility/RegisterInfoInterface.h"
15
16#include "lldb/Target/RegisterContext.h"
17
18#include "llvm/ADT/ArrayRef.h"
19#include "llvm/ADT/BitmaskEnum.h"
20
21// C includes
22// C++ includes
23
24namespace lldb_private {
25
26namespace minidump {
27
28LLVM_ENABLE_BITMASK_ENUMS_IN_NAMESPACE();
29
30class RegisterContextMinidump_ARM : public lldb_private::RegisterContext {
31public:
32  RegisterContextMinidump_ARM(lldb_private::Thread &thread,
33                              const DataExtractor &data, bool apple);
34
35  ~RegisterContextMinidump_ARM() override = default;
36
37  void InvalidateAllRegisters() override {
38    // Do nothing... registers are always valid...
39  }
40
41  // Used for unit testing.
42  static size_t GetRegisterCountStatic();
43  // Used for unit testing.
44  static const lldb_private::RegisterInfo *
45  GetRegisterInfoAtIndexStatic(size_t reg, bool apple);
46
47  size_t GetRegisterCount() override;
48
49  const lldb_private::RegisterInfo *GetRegisterInfoAtIndex(size_t reg) override;
50
51  size_t GetRegisterSetCount() override;
52
53  const lldb_private::RegisterSet *GetRegisterSet(size_t set) override;
54
55  const char *GetRegisterName(unsigned reg);
56
57  bool ReadRegister(const RegisterInfo *reg_info,
58                    RegisterValue &reg_value) override;
59
60  bool WriteRegister(const RegisterInfo *reg_info,
61                     const RegisterValue &reg_value) override;
62
63  uint32_t ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,
64                                               uint32_t num) override;
65
66  // Reference: see breakpad/crashpad source
67  struct QRegValue {
68    uint64_t lo;
69    uint64_t hi;
70  };
71
72  struct Context {
73    uint32_t context_flags;
74    uint32_t r[16];
75    uint32_t cpsr;
76    uint64_t fpscr;
77    union {
78      uint64_t d[32];
79      uint32_t s[32];
80      QRegValue q[16];
81    };
82    uint32_t extra[8];
83  };
84
85protected:
86  enum class Flags : uint32_t {
87    ARM_Flag = 0x40000000,
88    Integer = ARM_Flag | 0x00000002,
89    FloatingPoint = ARM_Flag | 0x00000004,
90    LLVM_MARK_AS_BITMASK_ENUM(/* LargestValue = */ FloatingPoint)
91  };
92  Context m_regs;
93  const bool m_apple; // True if this is an Apple ARM where FP is R7
94};
95
96} // end namespace minidump
97} // end namespace lldb_private
98#endif // liblldb_RegisterContextMinidump_ARM_h_
99