contrib/llvm/tools/lldb/source/Plugins/Process/Utility/RegisterContextMemory.h

   1 //===-- RegisterContextMemory.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_RegisterContextMemory_h_
  10 #define lldb_RegisterContextMemory_h_
  11
  12 #include <vector>
  13
  14 #include "lldb/Target/RegisterContext.h"
  15 #include "lldb/Utility/DataExtractor.h"
  16 #include "lldb/lldb-private.h"
  17
  18 class DynamicRegisterInfo;
  19
  20 class RegisterContextMemory : public lldb_private::RegisterContext {
  21 public:
  22   RegisterContextMemory(lldb_private::Thread &thread,
  23                         uint32_t concrete_frame_idx,
  24                         DynamicRegisterInfo &reg_info,
  25                         lldb::addr_t reg_data_addr);
  26
  27   ~RegisterContextMemory() override;
  28
  29   void InvalidateAllRegisters() override;
  30
  31   size_t GetRegisterCount() override;
  32
  33   const lldb_private::RegisterInfo *GetRegisterInfoAtIndex(size_t reg) override;
  34
  35   size_t GetRegisterSetCount() override;
  36
  37   const lldb_private::RegisterSet *GetRegisterSet(size_t reg_set) override;
  38
  39   uint32_t ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,
  40                                                uint32_t num) override;
  41
  42   // If all of the thread register are in a contiguous buffer in
  43   // memory, then the default ReadRegister/WriteRegister and
  44   // ReadAllRegisterValues/WriteAllRegisterValues will work. If thread
  45   // registers are not contiguous, clients will want to subclass this
  46   // class and modify the read/write functions as needed.
  47
  48   bool ReadRegister(const lldb_private::RegisterInfo *reg_info,
  49                     lldb_private::RegisterValue &reg_value) override;
  50
  51   bool WriteRegister(const lldb_private::RegisterInfo *reg_info,
  52                      const lldb_private::RegisterValue &reg_value) override;
  53
  54   bool ReadAllRegisterValues(lldb::DataBufferSP &data_sp) override;
  55
  56   bool WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override;
  57
  58   void SetAllRegisterData(const lldb::DataBufferSP &data_sp);
  59
  60 protected:
  61   void SetAllRegisterValid(bool b);
  62
  63   DynamicRegisterInfo &m_reg_infos;
  64   std::vector<bool> m_reg_valid;
  65   lldb_private::DataExtractor m_reg_data;
  66   lldb::addr_t m_reg_data_addr; // If this is valid, then we have a register
  67                                 // context that is stored in memmory
  68
  69 private:
  70   DISALLOW_COPY_AND_ASSIGN(RegisterContextMemory);
  71 };
  72
  73 #endif // lldb_RegisterContextMemory_h_