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