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/NativeRegisterContextWatchpoint_x86.h" 16 #include "Plugins/Process/Utility/RegisterContext_x86.h" 17 #include "Plugins/Process/Utility/lldb-x86-register-enums.h" 18 #include <sys/uio.h> 19 20 namespace lldb_private { 21 namespace process_linux { 22 23 class NativeProcessLinux; 24 25 class NativeRegisterContextLinux_x86_64 26 : public NativeRegisterContextLinux, 27 public NativeRegisterContextWatchpoint_x86 { 28 public: 29 NativeRegisterContextLinux_x86_64(const ArchSpec &target_arch, 30 NativeThreadProtocol &native_thread); 31 32 uint32_t GetRegisterSetCount() const override; 33 34 const RegisterSet *GetRegisterSet(uint32_t set_index) const override; 35 36 uint32_t GetUserRegisterCount() 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 llvm::Optional<SyscallData> GetSyscallData() override; 49 50 llvm::Optional<MmapData> GetMmapData() override; 51 52 protected: GetGPRBuffer()53 void *GetGPRBuffer() override { return &m_gpr_x86_64; } 54 55 void *GetFPRBuffer() override; 56 57 size_t GetFPRSize() override; 58 59 Status ReadFPR() override; 60 61 Status WriteFPR() override; 62 63 uint32_t GetPtraceOffset(uint32_t reg_index) override; 64 65 private: 66 // Private member types. 67 enum class XStateType { Invalid, FXSAVE, XSAVE }; 68 enum class RegSet { gpr, fpu, avx, mpx }; 69 70 // Info about register ranges. 71 struct RegInfo { 72 uint32_t num_registers; 73 uint32_t num_gpr_registers; 74 uint32_t num_fpr_registers; 75 uint32_t num_avx_registers; 76 uint32_t num_mpx_registers; 77 uint32_t last_gpr; 78 uint32_t first_fpr; 79 uint32_t last_fpr; 80 uint32_t first_st; 81 uint32_t last_st; 82 uint32_t first_mm; 83 uint32_t last_mm; 84 uint32_t first_xmm; 85 uint32_t last_xmm; 86 uint32_t first_ymm; 87 uint32_t last_ymm; 88 uint32_t first_mpxr; 89 uint32_t last_mpxr; 90 uint32_t first_mpxc; 91 uint32_t last_mpxc; 92 uint32_t first_dr; 93 uint32_t last_dr; 94 uint32_t gpr_flags; 95 }; 96 97 // Private member variables. 98 mutable XStateType m_xstate_type; 99 std::unique_ptr<FPR, llvm::FreeDeleter> 100 m_xstate; // Extended States Area, named FPR for historical reasons. 101 struct iovec m_iovec; 102 YMM m_ymm_set; 103 MPX m_mpx_set; 104 RegInfo m_reg_info; 105 uint64_t m_gpr_x86_64[k_num_gpr_registers_x86_64]; 106 uint32_t m_fctrl_offset_in_userarea; 107 108 // Private member methods. 109 bool IsCPUFeatureAvailable(RegSet feature_code) const; 110 111 bool IsRegisterSetAvailable(uint32_t set_index) const; 112 113 bool IsGPR(uint32_t reg_index) const; 114 115 bool IsFPR(uint32_t reg_index) const; 116 117 bool IsDR(uint32_t reg_index) const; 118 119 bool CopyXSTATEtoYMM(uint32_t reg_index, lldb::ByteOrder byte_order); 120 121 bool CopyYMMtoXSTATE(uint32_t reg, lldb::ByteOrder byte_order); 122 123 bool IsAVX(uint32_t reg_index) const; 124 125 bool CopyXSTATEtoMPX(uint32_t reg); 126 127 bool CopyMPXtoXSTATE(uint32_t reg); 128 129 bool IsMPX(uint32_t reg_index) const; 130 131 void UpdateXSTATEforWrite(uint32_t reg_index); 132 }; 133 134 } // namespace process_linux 135 } // namespace lldb_private 136 137 #endif // #ifndef lldb_NativeRegisterContextLinux_x86_64_h 138 139 #endif // defined(__i386__) || defined(__x86_64__) 140