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     {
26     public:
27         NativeRegisterContextLinux_x86_64 (const ArchSpec& target_arch,
28                                            NativeThreadProtocol &native_thread,
29                                            uint32_t concrete_frame_idx);
30 
31         uint32_t
32         GetRegisterSetCount () const override;
33 
34         const RegisterSet *
35         GetRegisterSet (uint32_t set_index) const override;
36 
37         uint32_t
38         GetUserRegisterCount() const override;
39 
40         Error
41         ReadRegister (const RegisterInfo *reg_info, RegisterValue &reg_value) override;
42 
43         Error
44         WriteRegister (const RegisterInfo *reg_info, const RegisterValue &reg_value) override;
45 
46         Error
47         ReadAllRegisterValues (lldb::DataBufferSP &data_sp) override;
48 
49         Error
50         WriteAllRegisterValues (const lldb::DataBufferSP &data_sp) override;
51 
52         Error
53         IsWatchpointHit(uint32_t wp_index, bool &is_hit) override;
54 
55         Error
56         GetWatchpointHitIndex(uint32_t &wp_index, lldb::addr_t trap_addr) override;
57 
58         Error
59         IsWatchpointVacant(uint32_t wp_index, bool &is_vacant) override;
60 
61         bool
62         ClearHardwareWatchpoint(uint32_t wp_index) override;
63 
64         Error
65         ClearAllHardwareWatchpoints () override;
66 
67         Error
68         SetHardwareWatchpointWithIndex(lldb::addr_t addr, size_t size,
69                 uint32_t watch_flags, uint32_t wp_index);
70 
71         uint32_t
72         SetHardwareWatchpoint(lldb::addr_t addr, size_t size,
73                 uint32_t watch_flags) override;
74 
75         lldb::addr_t
76         GetWatchpointAddress(uint32_t wp_index) override;
77 
78         uint32_t
79         NumSupportedHardwareWatchpoints() override;
80 
81     protected:
82         void*
83         GetGPRBuffer() override { return &m_gpr_x86_64; }
84 
85         void*
86         GetFPRBuffer() override;
87 
88         size_t
89         GetFPRSize() override;
90 
91         Error
92         ReadFPR() override;
93 
94         Error
95         WriteFPR() override;
96 
97     private:
98 
99         // Private member types.
100         enum FPRType
101         {
102             eFPRTypeNotValid = 0,
103             eFPRTypeFXSAVE,
104             eFPRTypeXSAVE
105         };
106 
107         // Info about register ranges.
108         struct RegInfo
109         {
110             uint32_t num_registers;
111             uint32_t num_gpr_registers;
112             uint32_t num_fpr_registers;
113             uint32_t num_avx_registers;
114 
115             uint32_t last_gpr;
116             uint32_t first_fpr;
117             uint32_t last_fpr;
118 
119             uint32_t first_st;
120             uint32_t last_st;
121             uint32_t first_mm;
122             uint32_t last_mm;
123             uint32_t first_xmm;
124             uint32_t last_xmm;
125             uint32_t first_ymm;
126             uint32_t last_ymm;
127 
128             uint32_t first_dr;
129             uint32_t gpr_flags;
130         };
131 
132         // Private member variables.
133         mutable FPRType m_fpr_type;
134         FPR m_fpr;
135         IOVEC m_iovec;
136         YMM m_ymm_set;
137         RegInfo m_reg_info;
138         uint64_t m_gpr_x86_64[k_num_gpr_registers_x86_64];
139         uint32_t m_fctrl_offset_in_userarea;
140 
141         // Private member methods.
142         bool IsRegisterSetAvailable (uint32_t set_index) const;
143 
144         bool
145         IsGPR(uint32_t reg_index) const;
146 
147         FPRType
148         GetFPRType () const;
149 
150         bool
151         IsFPR(uint32_t reg_index) const;
152 
153         bool
154         IsFPR(uint32_t reg_index, FPRType fpr_type) const;
155 
156         bool
157         CopyXSTATEtoYMM (uint32_t reg_index, lldb::ByteOrder byte_order);
158 
159         bool
160         CopyYMMtoXSTATE(uint32_t reg, lldb::ByteOrder byte_order);
161 
162         bool
163         IsAVX (uint32_t reg_index) const;
164     };
165 
166 } // namespace process_linux
167 } // namespace lldb_private
168 
169 #endif // #ifndef lldb_NativeRegisterContextLinux_x86_64_h
170 
171 #endif // defined(__i386__) || defined(__x86_64__)
172