1 //===-- RegisterContextMinidump_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 LLDB_SOURCE_PLUGINS_PROCESS_MINIDUMP_REGISTERCONTEXTMINIDUMP_ARM64_H
10 #define LLDB_SOURCE_PLUGINS_PROCESS_MINIDUMP_REGISTERCONTEXTMINIDUMP_ARM64_H
11 
12 #include "MinidumpTypes.h"
13 
14 #include "Plugins/Process/Utility/RegisterInfoInterface.h"
15 #include "lldb/Target/RegisterContext.h"
16 
17 #include "llvm/ADT/ArrayRef.h"
18 #include "llvm/ADT/BitmaskEnum.h"
19 
20 // C includes
21 // C++ includes
22 
23 namespace lldb_private {
24 
25 namespace minidump {
26 
27 LLVM_ENABLE_BITMASK_ENUMS_IN_NAMESPACE();
28 
29 class RegisterContextMinidump_ARM64 : public lldb_private::RegisterContext {
30 public:
31   RegisterContextMinidump_ARM64(lldb_private::Thread &thread,
32                                 const DataExtractor &data);
33 
34   ~RegisterContextMinidump_ARM64() override = default;
35 
36   void InvalidateAllRegisters() override {
37     // Do nothing... registers are always valid...
38   }
39 
40   size_t GetRegisterCount() override;
41 
42   const lldb_private::RegisterInfo *GetRegisterInfoAtIndex(size_t reg) override;
43 
44   size_t GetRegisterSetCount() override;
45 
46   const lldb_private::RegisterSet *GetRegisterSet(size_t set) override;
47 
48   const char *GetRegisterName(unsigned reg);
49 
50   bool ReadRegister(const RegisterInfo *reg_info,
51                     RegisterValue &reg_value) override;
52 
53   bool WriteRegister(const RegisterInfo *reg_info,
54                      const RegisterValue &reg_value) override;
55 
56   uint32_t ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,
57                                                uint32_t num) override;
58 
59   // Reference: see breakpad/crashpad source
60   struct Context {
61     uint64_t context_flags;
62     uint64_t x[32];
63     uint64_t pc;
64     uint32_t cpsr;
65     uint32_t fpsr;
66     uint32_t fpcr;
67     uint8_t v[32 * 16]; // 32 128-bit floating point registers
68   };
69 
70 protected:
71   enum class Flags : uint32_t {
72     ARM64_Flag = 0x80000000,
73     Integer = ARM64_Flag | 0x00000002,
74     FloatingPoint = ARM64_Flag | 0x00000004,
75     LLVM_MARK_AS_BITMASK_ENUM(/* LargestValue = */ FloatingPoint)
76   };
77   Context m_regs;
78 };
79 
80 } // end namespace minidump
81 } // end namespace lldb_private
82 #endif // LLDB_SOURCE_PLUGINS_PROCESS_MINIDUMP_REGISTERCONTEXTMINIDUMP_ARM64_H
83