1 //===-- NativeRegisterContext.h ---------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef liblldb_NativeRegisterContext_h_
11 #define liblldb_NativeRegisterContext_h_
15 // Other libraries and framework includes
17 #include "lldb/Host/common/NativeWatchpointList.h"
18 #include "lldb/lldb-private.h"
20 namespace lldb_private {
22 class NativeThreadProtocol;
24 class NativeRegisterContext
25 : public std::enable_shared_from_this<NativeRegisterContext> {
27 //------------------------------------------------------------------
28 // Constructors and Destructors
29 //------------------------------------------------------------------
30 NativeRegisterContext(NativeThreadProtocol &thread);
32 virtual ~NativeRegisterContext();
35 // InvalidateIfNeeded (bool force);
37 //------------------------------------------------------------------
38 // Subclasses must override these functions
39 //------------------------------------------------------------------
41 // InvalidateAllRegisters () = 0;
43 virtual uint32_t GetRegisterCount() const = 0;
45 virtual uint32_t GetUserRegisterCount() const = 0;
47 virtual const RegisterInfo *GetRegisterInfoAtIndex(uint32_t reg) const = 0;
49 const char *GetRegisterSetNameForRegisterAtIndex(uint32_t reg_index) const;
51 virtual uint32_t GetRegisterSetCount() const = 0;
53 virtual const RegisterSet *GetRegisterSet(uint32_t set_index) const = 0;
55 virtual Status ReadRegister(const RegisterInfo *reg_info,
56 RegisterValue ®_value) = 0;
58 virtual Status WriteRegister(const RegisterInfo *reg_info,
59 const RegisterValue ®_value) = 0;
61 virtual Status ReadAllRegisterValues(lldb::DataBufferSP &data_sp) = 0;
63 virtual Status WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) = 0;
65 uint32_t ConvertRegisterKindToRegisterNumber(uint32_t kind,
68 //------------------------------------------------------------------
69 // Subclasses can override these functions if desired
70 //------------------------------------------------------------------
71 virtual uint32_t NumSupportedHardwareBreakpoints();
73 virtual uint32_t SetHardwareBreakpoint(lldb::addr_t addr, size_t size);
75 virtual bool ClearHardwareBreakpoint(uint32_t hw_idx);
77 virtual Status ClearAllHardwareBreakpoints();
79 virtual Status GetHardwareBreakHitIndex(uint32_t &bp_index,
80 lldb::addr_t trap_addr);
82 virtual uint32_t NumSupportedHardwareWatchpoints();
84 virtual uint32_t SetHardwareWatchpoint(lldb::addr_t addr, size_t size,
85 uint32_t watch_flags);
87 virtual bool ClearHardwareWatchpoint(uint32_t hw_index);
89 virtual Status ClearAllHardwareWatchpoints();
91 virtual Status IsWatchpointHit(uint32_t wp_index, bool &is_hit);
93 virtual Status GetWatchpointHitIndex(uint32_t &wp_index,
94 lldb::addr_t trap_addr);
96 virtual Status IsWatchpointVacant(uint32_t wp_index, bool &is_vacant);
98 virtual lldb::addr_t GetWatchpointAddress(uint32_t wp_index);
100 // MIPS Linux kernel returns a masked address (last 3bits are masked)
101 // when a HW watchpoint is hit. However user may not have set a watchpoint
102 // on this address. This function emulates the instruction at PC and
103 // finds the base address used in the load/store instruction. This gives the
104 // exact address used to read/write the variable being watched.
106 // 'n' is at 0x120010d00 and 'm' is 0x120010d04. When a watchpoint is set at
108 // then watch exception is generated even when 'n' is read/written. This
110 // returns address of 'n' so that client can check whether a watchpoint is set
111 // on this address or not.
112 virtual lldb::addr_t GetWatchpointHitAddress(uint32_t wp_index);
114 virtual bool HardwareSingleStep(bool enable);
117 ReadRegisterValueFromMemory(const lldb_private::RegisterInfo *reg_info,
118 lldb::addr_t src_addr, size_t src_len,
119 RegisterValue ®_value);
122 WriteRegisterValueToMemory(const lldb_private::RegisterInfo *reg_info,
123 lldb::addr_t dst_addr, size_t dst_len,
124 const RegisterValue ®_value);
126 //------------------------------------------------------------------
127 // Subclasses should not override these
128 //------------------------------------------------------------------
129 virtual lldb::tid_t GetThreadID() const;
131 virtual NativeThreadProtocol &GetThread() { return m_thread; }
133 const RegisterInfo *GetRegisterInfoByName(llvm::StringRef reg_name,
134 uint32_t start_idx = 0);
136 const RegisterInfo *GetRegisterInfo(uint32_t reg_kind, uint32_t reg_num);
138 lldb::addr_t GetPC(lldb::addr_t fail_value = LLDB_INVALID_ADDRESS);
141 GetPCfromBreakpointLocation(lldb::addr_t fail_value = LLDB_INVALID_ADDRESS);
143 Status SetPC(lldb::addr_t pc);
145 lldb::addr_t GetSP(lldb::addr_t fail_value = LLDB_INVALID_ADDRESS);
147 Status SetSP(lldb::addr_t sp);
149 lldb::addr_t GetFP(lldb::addr_t fail_value = LLDB_INVALID_ADDRESS);
151 Status SetFP(lldb::addr_t fp);
153 const char *GetRegisterName(uint32_t reg);
155 lldb::addr_t GetReturnAddress(lldb::addr_t fail_value = LLDB_INVALID_ADDRESS);
157 lldb::addr_t GetFlags(lldb::addr_t fail_value = 0);
159 lldb::addr_t ReadRegisterAsUnsigned(uint32_t reg, lldb::addr_t fail_value);
161 lldb::addr_t ReadRegisterAsUnsigned(const RegisterInfo *reg_info,
162 lldb::addr_t fail_value);
164 Status WriteRegisterFromUnsigned(uint32_t reg, uint64_t uval);
166 Status WriteRegisterFromUnsigned(const RegisterInfo *reg_info, uint64_t uval);
169 // GetStopID () const
175 // SetStopID (uint32_t stop_id)
177 // m_stop_id = stop_id;
181 //------------------------------------------------------------------
182 // Classes that inherit from RegisterContext can see and modify these
183 //------------------------------------------------------------------
185 &m_thread; // The thread that this register context belongs to.
186 // uint32_t m_stop_id; // The stop ID that any data in this
187 // context is valid for
190 //------------------------------------------------------------------
191 // For RegisterContext only
192 //------------------------------------------------------------------
193 DISALLOW_COPY_AND_ASSIGN(NativeRegisterContext);
196 } // namespace lldb_private
198 #endif // liblldb_NativeRegisterContext_h_