RegisterContextPOSIX_x86.h

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//===-- RegisterContextPOSIX_x86.h ------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
 
#ifndef LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_REGISTERCONTEXTPOSIX_X86_H
#define LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_REGISTERCONTEXTPOSIX_X86_H
 
#include "Register/Arch/RegisterContext_x86.h"
#include "Register/RegisterInfoInterface.h"
#include "Register/Arch/RegisterInfos_x86_64_with_base_shared.h"
#include "Register/Arch/lldb-x86-register-enums.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/Utility/Log.h"
 
class RegisterContextPOSIX_x86 : public lldb_private::RegisterContext {
public:
  RegisterContextPOSIX_x86(lldb_private::Thread &thread,
                           uint32_t concrete_frame_idx,
                           lldb_private::RegisterInfoInterface *register_info);
 
  ~RegisterContextPOSIX_x86() override;
 
  void Invalidate();
 
  void InvalidateAllRegisters() override;
 
  size_t GetRegisterCount() override;
 
  virtual size_t GetGPRSize();
 
  virtual size_t GetFXSAVEOffset();
 
  virtual unsigned GetRegisterSize(unsigned reg);
 
  virtual unsigned GetRegisterOffset(unsigned reg);
 
  const lldb_private::RegisterInfo *GetRegisterInfoAtIndex(size_t reg) override;
 
  size_t GetRegisterSetCount() override;
 
  const lldb_private::RegisterSet *GetRegisterSet(size_t set) override;
 
  const char *GetRegisterName(unsigned reg);
 
  // Note: prefer kernel definitions over user-land
  enum FPRType {
    eNotValid = 0,
    eFSAVE, // TODO
    eFXSAVE,
    eSOFT, // TODO
    eXSAVE
  };
 
protected:
  FPRType
      m_fpr_type; // determines the type of data stored by union FPR, if any.
  lldb_private::FPR m_fpr;     // floating-point registers including extended
                               // register sets.
  lldb_private::YMM m_ymm_set; // copy of ymmh and xmm register halves.
  std::unique_ptr<lldb_private::RegisterInfoInterface>
      m_register_info_up; // Register Info Interface (FreeBSD or Linux)
 
  // Determines if an extended register set is supported on the processor
  // running the inferior process.
  virtual bool IsRegisterSetAvailable(size_t set_index);
 
  virtual const lldb_private::RegisterInfo *GetRegisterInfo();
 
  bool IsGPR(unsigned reg);
 
  bool IsFPR(unsigned reg);
 
  bool IsAVX(unsigned reg);
 
  bool CopyXSTATEtoYMM(uint32_t reg, lldb::ByteOrder byte_order);
  bool CopyYMMtoXSTATE(uint32_t reg, lldb::ByteOrder byte_order);
  bool IsFPR(unsigned reg, FPRType fpr_type);
  FPRType GetFPRType();
 
  virtual bool ReadGPR() = 0;
  virtual bool ReadFPR() = 0;
  virtual bool WriteGPR() = 0;
  virtual bool WriteFPR() = 0;
  virtual lldb_private::RegInfo &GetRegInfo();
};
 
#endif // LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_REGISTERCONTEXTPOSIX_X86_H