lldb/source/Plugins/Process/Utility/RegisterContextHistory.h

   1 //===-- RegisterContextHistory.h ----------------------------------------*- C++
   2 //-*-===//
   3 //
   4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   5 // See https://llvm.org/LICENSE.txt for license information.
   6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #ifndef LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_REGISTERCONTEXTHISTORY_H
  11 #define LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_REGISTERCONTEXTHISTORY_H
  12
  13 #include <vector>
  14
  15 #include "lldb/Symbol/SymbolContext.h"
  16 #include "lldb/Target/RegisterContext.h"
  17 #include "lldb/lldb-private.h"
  18
  19 namespace lldb_private {
  20
  21 class RegisterContextHistory : public lldb_private::RegisterContext {
  22 public:
  23   typedef std::shared_ptr<RegisterContextHistory> SharedPtr;
  24
  25   RegisterContextHistory(Thread &thread, uint32_t concrete_frame_idx,
  26                          uint32_t address_byte_size, lldb::addr_t pc_value);
  27
  28   ~RegisterContextHistory() override;
  29
  30   void InvalidateAllRegisters() override;
  31
  32   size_t GetRegisterCount() override;
  33
  34   const lldb_private::RegisterInfo *GetRegisterInfoAtIndex(size_t reg) override;
  35
  36   size_t GetRegisterSetCount() override;
  37
  38   const lldb_private::RegisterSet *GetRegisterSet(size_t reg_set) override;
  39
  40   bool ReadRegister(const lldb_private::RegisterInfo *reg_info,
  41                     lldb_private::RegisterValue &value) override;
  42
  43   bool WriteRegister(const lldb_private::RegisterInfo *reg_info,
  44                      const lldb_private::RegisterValue &value) override;
  45
  46   bool ReadAllRegisterValues(lldb::WritableDataBufferSP &data_sp) override;
  47
  48   bool WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override;
  49
  50   uint32_t ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,
  51                                                uint32_t num) override;
  52
  53 private:
  54   // For RegisterContextLLDB only
  55
  56   lldb_private::RegisterSet m_reg_set0; // register set 0 (PC only)
  57   lldb_private::RegisterInfo m_pc_reg_info;
  58
  59   lldb::addr_t m_pc_value;
  60
  61   RegisterContextHistory(const RegisterContextHistory &) = delete;
  62   const RegisterContextHistory &
  63   operator=(const RegisterContextHistory &) = delete;
  64 };
  65 } // namespace lldb_private
  66
  67 #endif // LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_REGISTERCONTEXTHISTORY_H