contrib/llvm-project/lldb/source/Plugins/Process/Utility/RegisterContextPOSIX_arm.h

   1 //===-- RegisterContextPOSIX_arm.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 liblldb_RegisterContextPOSIX_arm_h_
  10 #define liblldb_RegisterContextPOSIX_arm_h_
  11
  12 #include "RegisterInfoInterface.h"
  13 #include "lldb-arm-register-enums.h"
  14 #include "lldb/Target/RegisterContext.h"
  15 #include "lldb/Utility/Log.h"
  16
  17 class ProcessMonitor;
  18
  19 class RegisterContextPOSIX_arm : public lldb_private::RegisterContext {
  20 public:
  21   RegisterContextPOSIX_arm(lldb_private::Thread &thread,
  22                            uint32_t concrete_frame_idx,
  23                            lldb_private::RegisterInfoInterface *register_info);
  24
  25   ~RegisterContextPOSIX_arm() override;
  26
  27   void Invalidate();
  28
  29   void InvalidateAllRegisters() override;
  30
  31   size_t GetRegisterCount() override;
  32
  33   virtual size_t GetGPRSize();
  34
  35   virtual unsigned GetRegisterSize(unsigned reg);
  36
  37   virtual unsigned GetRegisterOffset(unsigned reg);
  38
  39   const lldb_private::RegisterInfo *GetRegisterInfoAtIndex(size_t reg) override;
  40
  41   size_t GetRegisterSetCount() override;
  42
  43   const lldb_private::RegisterSet *GetRegisterSet(size_t set) override;
  44
  45   const char *GetRegisterName(unsigned reg);
  46
  47   uint32_t ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,
  48                                                uint32_t num) override;
  49
  50 protected:
  51   struct RegInfo {
  52     uint32_t num_registers;
  53     uint32_t num_gpr_registers;
  54     uint32_t num_fpr_registers;
  55
  56     uint32_t last_gpr;
  57     uint32_t first_fpr;
  58     uint32_t last_fpr;
  59
  60     uint32_t first_fpr_v;
  61     uint32_t last_fpr_v;
  62
  63     uint32_t gpr_flags;
  64   };
  65
  66   struct QReg {
  67     uint8_t bytes[16];
  68   };
  69
  70   struct FPU {
  71     union {
  72       uint32_t s[32];
  73       uint64_t d[32];
  74       QReg q[16]; // the 128-bit NEON registers
  75     } floats;
  76     uint32_t fpscr;
  77   };
  78
  79   uint32_t m_gpr_arm[lldb_private::k_num_gpr_registers_arm]; // 32-bit general
  80                                                              // purpose
  81                                                              // registers.
  82   RegInfo m_reg_info;
  83   struct RegisterContextPOSIX_arm::FPU
  84       m_fpr; // floating-point registers including extended register sets.
  85   std::unique_ptr<lldb_private::RegisterInfoInterface>
  86       m_register_info_up; // Register Info Interface (FreeBSD or Linux)
  87
  88   // Determines if an extended register set is supported on the processor
  89   // running the inferior process.
  90   virtual bool IsRegisterSetAvailable(size_t set_index);
  91
  92   virtual const lldb_private::RegisterInfo *GetRegisterInfo();
  93
  94   bool IsGPR(unsigned reg);
  95
  96   bool IsFPR(unsigned reg);
  97
  98   lldb::ByteOrder GetByteOrder();
  99
 100   virtual bool ReadGPR() = 0;
 101   virtual bool ReadFPR() = 0;
 102   virtual bool WriteGPR() = 0;
 103   virtual bool WriteFPR() = 0;
 104 };
 105
 106 #endif // liblldb_RegisterContextPOSIX_arm_h_