1 //===-- NativeRegisterContextLinux_x86_64.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(__i386__) || defined(__x86_64__) 10 11 #ifndef lldb_NativeRegisterContextLinux_x86_64_h 12 #define lldb_NativeRegisterContextLinux_x86_64_h 13 14 #include "Plugins/Process/Linux/NativeRegisterContextLinux.h" 15 #include "Plugins/Process/Utility/NativeRegisterContextDBReg_x86.h" 16 #include "Plugins/Process/Utility/RegisterContext_x86.h" 17 #include "Plugins/Process/Utility/lldb-x86-register-enums.h" 18 #include <optional> 19 #include <sys/uio.h> 20 21 namespace lldb_private { 22 namespace process_linux { 23 24 class NativeProcessLinux; 25 26 class NativeRegisterContextLinux_x86_64 27 : public NativeRegisterContextLinux, 28 public NativeRegisterContextDBReg_x86 { 29 public: 30 NativeRegisterContextLinux_x86_64(const ArchSpec &target_arch, 31 NativeThreadProtocol &native_thread); 32 33 uint32_t GetRegisterSetCount() const override; 34 35 const RegisterSet *GetRegisterSet(uint32_t set_index) const override; 36 37 uint32_t GetUserRegisterCount() const override; 38 39 Status ReadRegister(const RegisterInfo *reg_info, 40 RegisterValue ®_value) override; 41 42 Status WriteRegister(const RegisterInfo *reg_info, 43 const RegisterValue ®_value) override; 44 45 Status ReadAllRegisterValues(lldb::WritableDataBufferSP &data_sp) override; 46 47 Status WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override; 48 49 std::optional<SyscallData> GetSyscallData() override; 50 51 std::optional<MmapData> GetMmapData() override; 52 53 protected: GetGPRBuffer()54 void *GetGPRBuffer() override { return &m_gpr_x86_64; } 55 56 void *GetFPRBuffer() override; 57 58 size_t GetFPRSize() override; 59 60 Status ReadFPR() override; 61 62 Status WriteFPR() override; 63 64 uint32_t GetPtraceOffset(uint32_t reg_index) override; 65 66 private: 67 // Private member types. 68 enum class XStateType { Invalid, FXSAVE, XSAVE }; 69 enum class RegSet { gpr, fpu, avx, mpx }; 70 71 // Info about register ranges. 72 struct RegInfo { 73 uint32_t num_registers; 74 uint32_t num_gpr_registers; 75 uint32_t num_fpr_registers; 76 uint32_t num_avx_registers; 77 uint32_t num_mpx_registers; 78 uint32_t last_gpr; 79 uint32_t first_fpr; 80 uint32_t last_fpr; 81 uint32_t first_st; 82 uint32_t last_st; 83 uint32_t first_mm; 84 uint32_t last_mm; 85 uint32_t first_xmm; 86 uint32_t last_xmm; 87 uint32_t first_ymm; 88 uint32_t last_ymm; 89 uint32_t first_mpxr; 90 uint32_t last_mpxr; 91 uint32_t first_mpxc; 92 uint32_t last_mpxc; 93 uint32_t first_dr; 94 uint32_t last_dr; 95 uint32_t gpr_flags; 96 }; 97 98 // Private member variables. 99 mutable XStateType m_xstate_type; 100 std::unique_ptr<FPR, llvm::FreeDeleter> 101 m_xstate; // Extended States Area, named FPR for historical reasons. 102 struct iovec m_iovec; 103 YMM m_ymm_set; 104 MPX m_mpx_set; 105 RegInfo m_reg_info; 106 uint64_t m_gpr_x86_64[k_num_gpr_registers_x86_64]; 107 uint32_t m_fctrl_offset_in_userarea; 108 109 // Private member methods. 110 bool IsCPUFeatureAvailable(RegSet feature_code) const; 111 112 bool IsRegisterSetAvailable(uint32_t set_index) const; 113 114 bool IsGPR(uint32_t reg_index) const; 115 116 bool IsFPR(uint32_t reg_index) const; 117 118 bool IsDR(uint32_t reg_index) const; 119 120 bool CopyXSTATEtoYMM(uint32_t reg_index, lldb::ByteOrder byte_order); 121 122 bool CopyYMMtoXSTATE(uint32_t reg, lldb::ByteOrder byte_order); 123 124 bool IsAVX(uint32_t reg_index) const; 125 126 bool CopyXSTATEtoMPX(uint32_t reg); 127 128 bool CopyMPXtoXSTATE(uint32_t reg); 129 130 bool IsMPX(uint32_t reg_index) const; 131 132 void UpdateXSTATEforWrite(uint32_t reg_index); 133 }; 134 135 } // namespace process_linux 136 } // namespace lldb_private 137 138 #endif // #ifndef lldb_NativeRegisterContextLinux_x86_64_h 139 140 #endif // defined(__i386__) || defined(__x86_64__) 141