1 | //===-- RegisterContextThreadMemory.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_UTILITY_REGISTERCONTEXTTHREADMEMORY_H |
10 | #define LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_REGISTERCONTEXTTHREADMEMORY_H |
11 | |
12 | #include <vector> |
13 | |
14 | #include "lldb/Symbol/SymbolContext.h" |
15 | #include "lldb/Target/RegisterContext.h" |
16 | #include "lldb/lldb-private.h" |
17 | |
18 | namespace lldb_private { |
19 | |
20 | class RegisterContextThreadMemory : public lldb_private::RegisterContext { |
21 | public: |
22 | RegisterContextThreadMemory(Thread &thread, lldb::addr_t register_data_addr); |
23 | |
24 | ~RegisterContextThreadMemory() override; |
25 | |
26 | void InvalidateAllRegisters() override; |
27 | |
28 | size_t GetRegisterCount() override; |
29 | |
30 | const RegisterInfo *GetRegisterInfoAtIndex(size_t reg) override; |
31 | |
32 | size_t GetRegisterSetCount() override; |
33 | |
34 | const RegisterSet *GetRegisterSet(size_t reg_set) override; |
35 | |
36 | bool ReadRegister(const RegisterInfo *reg_info, |
37 | RegisterValue ®_value) override; |
38 | |
39 | bool WriteRegister(const RegisterInfo *reg_info, |
40 | const RegisterValue ®_value) override; |
41 | |
42 | // These two functions are used to implement "push" and "pop" of register |
43 | // states. They are used primarily |
44 | // for expression evaluation, where we need to push a new state (storing the |
45 | // old one in data_sp) and then |
46 | // restoring the original state by passing the data_sp we got from |
47 | // ReadAllRegisters to WriteAllRegisterValues. |
48 | // ReadAllRegisters will do what is necessary to return a coherent set of |
49 | // register values for this thread, which |
50 | // may mean e.g. interrupting a thread that is sitting in a kernel trap. That |
51 | // is a somewhat disruptive operation, |
52 | // so these API's should only be used when this behavior is needed. |
53 | |
54 | bool ReadAllRegisterValues(lldb::WritableDataBufferSP &data_sp) override; |
55 | |
56 | bool WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override; |
57 | |
58 | bool CopyFromRegisterContext(lldb::RegisterContextSP context); |
59 | |
60 | uint32_t ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind, |
61 | uint32_t num) override; |
62 | |
63 | uint32_t NumSupportedHardwareBreakpoints() override; |
64 | |
65 | uint32_t SetHardwareBreakpoint(lldb::addr_t addr, size_t size) override; |
66 | |
67 | bool ClearHardwareBreakpoint(uint32_t hw_idx) override; |
68 | |
69 | uint32_t NumSupportedHardwareWatchpoints() override; |
70 | |
71 | uint32_t SetHardwareWatchpoint(lldb::addr_t addr, size_t size, bool read, |
72 | bool write) override; |
73 | |
74 | bool ClearHardwareWatchpoint(uint32_t hw_index) override; |
75 | |
76 | bool HardwareSingleStep(bool enable) override; |
77 | |
78 | Status ReadRegisterValueFromMemory(const lldb_private::RegisterInfo *reg_info, |
79 | lldb::addr_t src_addr, uint32_t src_len, |
80 | RegisterValue ®_value) override; |
81 | |
82 | Status WriteRegisterValueToMemory(const lldb_private::RegisterInfo *reg_info, |
83 | lldb::addr_t dst_addr, uint32_t dst_len, |
84 | const RegisterValue ®_value) override; |
85 | |
86 | protected: |
87 | void UpdateRegisterContext(); |
88 | |
89 | lldb::ThreadWP m_thread_wp; |
90 | lldb::RegisterContextSP m_reg_ctx_sp; |
91 | lldb::addr_t m_register_data_addr; |
92 | uint32_t m_stop_id; |
93 | |
94 | private: |
95 | RegisterContextThreadMemory(const RegisterContextThreadMemory &) = delete; |
96 | const RegisterContextThreadMemory & |
97 | operator=(const RegisterContextThreadMemory &) = delete; |
98 | }; |
99 | |
100 | } // namespace lldb_private |
101 | |
102 | #endif // LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_REGISTERCONTEXTTHREADMEMORY_H |
103 | |