1 //===-- NativeRegisterContextLinux_x86_64.h ---------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #if defined(__i386__) || defined(__x86_64__)
11 
12 #ifndef lldb_NativeRegisterContextLinux_x86_64_h
13 #define lldb_NativeRegisterContextLinux_x86_64_h
14 
15 #include "Plugins/Process/Linux/NativeRegisterContextLinux.h"
16 #include "Plugins/Process/Utility/RegisterContext_x86.h"
17 #include "Plugins/Process/Utility/lldb-x86-register-enums.h"
18 
19 namespace lldb_private {
20 namespace process_linux {
21 
22 class NativeProcessLinux;
23 
24 class NativeRegisterContextLinux_x86_64 : public NativeRegisterContextLinux {
25 public:
26   NativeRegisterContextLinux_x86_64(const ArchSpec &target_arch,
27                                     NativeThreadProtocol &native_thread,
28                                     uint32_t concrete_frame_idx);
29 
30   uint32_t GetRegisterSetCount() const override;
31 
32   const RegisterSet *GetRegisterSet(uint32_t set_index) const override;
33 
34   uint32_t GetUserRegisterCount() const override;
35 
36   Error ReadRegister(const RegisterInfo *reg_info,
37                      RegisterValue &reg_value) override;
38 
39   Error WriteRegister(const RegisterInfo *reg_info,
40                       const RegisterValue &reg_value) override;
41 
42   Error ReadAllRegisterValues(lldb::DataBufferSP &data_sp) override;
43 
44   Error WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override;
45 
46   Error IsWatchpointHit(uint32_t wp_index, bool &is_hit) override;
47 
48   Error GetWatchpointHitIndex(uint32_t &wp_index,
49                               lldb::addr_t trap_addr) override;
50 
51   Error IsWatchpointVacant(uint32_t wp_index, bool &is_vacant) override;
52 
53   bool ClearHardwareWatchpoint(uint32_t wp_index) override;
54 
55   Error ClearAllHardwareWatchpoints() override;
56 
57   Error SetHardwareWatchpointWithIndex(lldb::addr_t addr, size_t size,
58                                        uint32_t watch_flags, uint32_t wp_index);
59 
60   uint32_t SetHardwareWatchpoint(lldb::addr_t addr, size_t size,
61                                  uint32_t watch_flags) override;
62 
63   lldb::addr_t GetWatchpointAddress(uint32_t wp_index) override;
64 
65   uint32_t NumSupportedHardwareWatchpoints() override;
66 
67 protected:
68   void *GetGPRBuffer() override { return &m_gpr_x86_64; }
69 
70   void *GetFPRBuffer() override;
71 
72   size_t GetFPRSize() override;
73 
74   Error ReadFPR() override;
75 
76   Error WriteFPR() override;
77 
78 private:
79   // Private member types.
80   enum class XStateType { Invalid, FXSAVE, XSAVE };
81   enum class RegSet { gpr, fpu, avx, mpx };
82 
83   // Info about register ranges.
84   struct RegInfo {
85     uint32_t num_registers;
86     uint32_t num_gpr_registers;
87     uint32_t num_fpr_registers;
88     uint32_t num_avx_registers;
89     uint32_t num_mpx_registers;
90     uint32_t last_gpr;
91     uint32_t first_fpr;
92     uint32_t last_fpr;
93     uint32_t first_st;
94     uint32_t last_st;
95     uint32_t first_mm;
96     uint32_t last_mm;
97     uint32_t first_xmm;
98     uint32_t last_xmm;
99     uint32_t first_ymm;
100     uint32_t last_ymm;
101     uint32_t first_mpxr;
102     uint32_t last_mpxr;
103     uint32_t first_mpxc;
104     uint32_t last_mpxc;
105     uint32_t first_dr;
106     uint32_t gpr_flags;
107   };
108 
109   // Private member variables.
110   mutable XStateType m_xstate_type;
111   FPR m_fpr; // Extended States Area, named FPR for historical reasons.
112   IOVEC m_iovec;
113   YMM m_ymm_set;
114   MPX m_mpx_set;
115   RegInfo m_reg_info;
116   uint64_t m_gpr_x86_64[k_num_gpr_registers_x86_64];
117   uint32_t m_fctrl_offset_in_userarea;
118 
119   // Private member methods.
120   bool IsCPUFeatureAvailable(RegSet feature_code) const;
121 
122   bool IsRegisterSetAvailable(uint32_t set_index) const;
123 
124   bool IsGPR(uint32_t reg_index) const;
125 
126   bool IsFPR(uint32_t reg_index) const;
127 
128   bool CopyXSTATEtoYMM(uint32_t reg_index, lldb::ByteOrder byte_order);
129 
130   bool CopyYMMtoXSTATE(uint32_t reg, lldb::ByteOrder byte_order);
131 
132   bool IsAVX(uint32_t reg_index) const;
133 
134   bool CopyXSTATEtoMPX(uint32_t reg);
135 
136   bool CopyMPXtoXSTATE(uint32_t reg);
137 
138   bool IsMPX(uint32_t reg_index) const;
139 };
140 
141 } // namespace process_linux
142 } // namespace lldb_private
143 
144 #endif // #ifndef lldb_NativeRegisterContextLinux_x86_64_h
145 
146 #endif // defined(__i386__) || defined(__x86_64__)
147