1 //===-- NativeRegisterContextLinux_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 #if defined(__arm64__) || defined(__aarch64__) 10 11 #ifndef lldb_NativeRegisterContextLinux_arm64_h 12 #define lldb_NativeRegisterContextLinux_arm64_h 13 14 #include "Plugins/Process/Linux/NativeRegisterContextLinux.h" 15 #include "Plugins/Process/Utility/LinuxPTraceDefines_arm64sve.h" 16 #include "Plugins/Process/Utility/NativeRegisterContextDBReg_arm64.h" 17 #include "Plugins/Process/Utility/RegisterInfoPOSIX_arm64.h" 18 19 #include <asm/ptrace.h> 20 21 namespace lldb_private { 22 namespace process_linux { 23 24 class NativeProcessLinux; 25 26 class NativeRegisterContextLinux_arm64 27 : public NativeRegisterContextLinux, 28 public NativeRegisterContextDBReg_arm64 { 29 public: 30 NativeRegisterContextLinux_arm64( 31 const ArchSpec &target_arch, NativeThreadProtocol &native_thread, 32 std::unique_ptr<RegisterInfoPOSIX_arm64> register_info_up); 33 34 uint32_t GetRegisterSetCount() const override; 35 36 uint32_t GetUserRegisterCount() const override; 37 38 const RegisterSet *GetRegisterSet(uint32_t set_index) const override; 39 40 Status ReadRegister(const RegisterInfo *reg_info, 41 RegisterValue ®_value) override; 42 43 Status WriteRegister(const RegisterInfo *reg_info, 44 const RegisterValue ®_value) override; 45 46 Status ReadAllRegisterValues(lldb::DataBufferSP &data_sp) override; 47 48 Status WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override; 49 50 void InvalidateAllRegisters() override; 51 52 std::vector<uint32_t> 53 GetExpeditedRegisters(ExpeditedRegs expType) const override; 54 55 bool RegisterOffsetIsDynamic() const override { return true; } 56 57 llvm::Expected<MemoryTaggingDetails> 58 GetMemoryTaggingDetails(int32_t type) override; 59 60 protected: 61 Status ReadGPR() override; 62 63 Status WriteGPR() override; 64 65 Status ReadFPR() override; 66 67 Status WriteFPR() override; 68 69 void *GetGPRBuffer() override { return &m_gpr_arm64; } 70 71 // GetGPRBufferSize returns sizeof arm64 GPR ptrace buffer, it is different 72 // from GetGPRSize which returns sizeof RegisterInfoPOSIX_arm64::GPR. 73 size_t GetGPRBufferSize() { return sizeof(m_gpr_arm64); } 74 75 void *GetFPRBuffer() override { return &m_fpr; } 76 77 size_t GetFPRSize() override { return sizeof(m_fpr); } 78 79 private: 80 bool m_gpr_is_valid; 81 bool m_fpu_is_valid; 82 bool m_sve_buffer_is_valid; 83 bool m_mte_ctrl_is_valid; 84 85 bool m_sve_header_is_valid; 86 bool m_pac_mask_is_valid; 87 88 struct user_pt_regs m_gpr_arm64; // 64-bit general purpose registers. 89 90 RegisterInfoPOSIX_arm64::FPU 91 m_fpr; // floating-point registers including extended register sets. 92 93 SVEState m_sve_state; 94 struct sve::user_sve_header m_sve_header; 95 std::vector<uint8_t> m_sve_ptrace_payload; 96 97 bool m_refresh_hwdebug_info; 98 99 struct user_pac_mask { 100 uint64_t data_mask; 101 uint64_t insn_mask; 102 }; 103 104 struct user_pac_mask m_pac_mask; 105 106 uint64_t m_mte_ctrl_reg; 107 108 bool IsGPR(unsigned reg) const; 109 110 bool IsFPR(unsigned reg) const; 111 112 Status ReadAllSVE(); 113 114 Status WriteAllSVE(); 115 116 Status ReadSVEHeader(); 117 118 Status WriteSVEHeader(); 119 120 Status ReadPAuthMask(); 121 122 Status ReadMTEControl(); 123 124 Status WriteMTEControl(); 125 126 bool IsSVE(unsigned reg) const; 127 bool IsPAuth(unsigned reg) const; 128 bool IsMTE(unsigned reg) const; 129 130 uint64_t GetSVERegVG() { return m_sve_header.vl / 8; } 131 132 void SetSVERegVG(uint64_t vg) { m_sve_header.vl = vg * 8; } 133 134 void *GetSVEHeader() { return &m_sve_header; } 135 136 void *GetPACMask() { return &m_pac_mask; } 137 138 void *GetMTEControl() { return &m_mte_ctrl_reg; } 139 140 void *GetSVEBuffer(); 141 142 size_t GetSVEHeaderSize() { return sizeof(m_sve_header); } 143 144 size_t GetPACMaskSize() { return sizeof(m_pac_mask); } 145 146 size_t GetSVEBufferSize() { return m_sve_ptrace_payload.size(); } 147 148 size_t GetMTEControlSize() { return sizeof(m_mte_ctrl_reg); } 149 150 llvm::Error ReadHardwareDebugInfo() override; 151 152 llvm::Error WriteHardwareDebugRegs(DREGType hwbType) override; 153 154 uint32_t CalculateFprOffset(const RegisterInfo *reg_info) const; 155 156 RegisterInfoPOSIX_arm64 &GetRegisterInfo() const; 157 158 void ConfigureRegisterContext(); 159 160 uint32_t CalculateSVEOffset(const RegisterInfo *reg_info) const; 161 }; 162 163 } // namespace process_linux 164 } // namespace lldb_private 165 166 #endif // #ifndef lldb_NativeRegisterContextLinux_arm64_h 167 168 #endif // defined (__arm64__) || defined (__aarch64__) 169