lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_arm64.h

   1 //===-- RegisterContextPOSIXCore_arm64.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_ELF_CORE_REGISTERCONTEXTPOSIXCORE_ARM64_H
  10 #define LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_REGISTERCONTEXTPOSIXCORE_ARM64_H
  11
  12 #include "Plugins/Process/Utility/LinuxPTraceDefines_arm64sve.h"
  13 #include "Plugins/Process/Utility/RegisterContextPOSIX_arm64.h"
  14
  15 #include "Plugins/Process/elf-core/RegisterUtilities.h"
  16 #include "lldb/Utility/DataBufferHeap.h"
  17 #include "lldb/Utility/DataExtractor.h"
  18
  19 class RegisterContextCorePOSIX_arm64 : public RegisterContextPOSIX_arm64 {
  20 public:
  21   static std::unique_ptr<RegisterContextCorePOSIX_arm64>
  22   Create(lldb_private::Thread &thread, const lldb_private::ArchSpec &arch,
  23          const lldb_private::DataExtractor &gpregset,
  24          llvm::ArrayRef<lldb_private::CoreNote> notes);
  25
  26   ~RegisterContextCorePOSIX_arm64() override;
  27
  28   bool ReadRegister(const lldb_private::RegisterInfo *reg_info,
  29                     lldb_private::RegisterValue &value) override;
  30
  31   bool WriteRegister(const lldb_private::RegisterInfo *reg_info,
  32                      const lldb_private::RegisterValue &value) override;
  33
  34   bool ReadAllRegisterValues(lldb::WritableDataBufferSP &data_sp) override;
  35
  36   bool WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override;
  37
  38   bool HardwareSingleStep(bool enable) override;
  39
  40 protected:
  41   RegisterContextCorePOSIX_arm64(
  42       lldb_private::Thread &thread,
  43       std::unique_ptr<RegisterInfoPOSIX_arm64> register_info,
  44       const lldb_private::DataExtractor &gpregset,
  45       llvm::ArrayRef<lldb_private::CoreNote> notes);
  46
  47   bool ReadGPR() override;
  48
  49   bool ReadFPR() override;
  50
  51   bool WriteGPR() override;
  52
  53   bool WriteFPR() override;
  54
  55 private:
  56   lldb_private::DataExtractor m_gpr_data;
  57   lldb_private::DataExtractor m_fpr_data;
  58   lldb_private::DataExtractor m_sve_data;
  59   lldb_private::DataExtractor m_pac_data;
  60   lldb_private::DataExtractor m_tls_data;
  61   lldb_private::DataExtractor m_za_data;
  62   lldb_private::DataExtractor m_mte_data;
  63
  64   SVEState m_sve_state = SVEState::Unknown;
  65   uint16_t m_sve_vector_length = 0;
  66
  67   // These are pseudo registers derived from the values in SSVE and ZA data.
  68   struct __attribute__((packed)) sme_pseudo_regs {
  69     uint64_t ctrl_reg;
  70     uint64_t svg_reg;
  71   };
  72   static_assert(sizeof(sme_pseudo_regs) == 16);
  73
  74   struct sme_pseudo_regs m_sme_pseudo_regs;
  75
  76   const uint8_t *GetSVEBuffer(uint64_t offset = 0);
  77
  78   void ConfigureRegisterContext();
  79
  80   uint32_t CalculateSVEOffset(const lldb_private::RegisterInfo *reg_info);
  81
  82   uint64_t GetSVERegVG() { return m_sve_vector_length / 8; }
  83 };
  84
  85 #endif // LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_REGISTERCONTEXTPOSIXCORE_ARM64_H