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_
13 #include "lldb/Host/common/NativeWatchpointList.h"
14 #include "lldb/lldb-private.h"
16 namespace lldb_private {
18 class NativeThreadProtocol;
20 class NativeRegisterContext
21 : public std::enable_shared_from_this<NativeRegisterContext> {
23 //------------------------------------------------------------------
24 // Constructors and Destructors
25 //------------------------------------------------------------------
26 NativeRegisterContext(NativeThreadProtocol &thread);
28 virtual ~NativeRegisterContext();
31 // InvalidateIfNeeded (bool force);
33 //------------------------------------------------------------------
34 // Subclasses must override these functions
35 //------------------------------------------------------------------
37 // InvalidateAllRegisters () = 0;
39 virtual uint32_t GetRegisterCount() const = 0;
41 virtual uint32_t GetUserRegisterCount() const = 0;
43 virtual const RegisterInfo *GetRegisterInfoAtIndex(uint32_t reg) const = 0;
45 const char *GetRegisterSetNameForRegisterAtIndex(uint32_t reg_index) const;
47 virtual uint32_t GetRegisterSetCount() const = 0;
49 virtual const RegisterSet *GetRegisterSet(uint32_t set_index) const = 0;
51 virtual Status ReadRegister(const RegisterInfo *reg_info,
52 RegisterValue ®_value) = 0;
54 virtual Status WriteRegister(const RegisterInfo *reg_info,
55 const RegisterValue ®_value) = 0;
57 virtual Status ReadAllRegisterValues(lldb::DataBufferSP &data_sp) = 0;
59 virtual Status WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) = 0;
61 uint32_t ConvertRegisterKindToRegisterNumber(uint32_t kind,
64 //------------------------------------------------------------------
65 // Subclasses can override these functions if desired
66 //------------------------------------------------------------------
67 virtual uint32_t NumSupportedHardwareBreakpoints();
69 virtual uint32_t SetHardwareBreakpoint(lldb::addr_t addr, size_t size);
71 virtual bool ClearHardwareBreakpoint(uint32_t hw_idx);
73 virtual Status ClearAllHardwareBreakpoints();
75 virtual Status GetHardwareBreakHitIndex(uint32_t &bp_index,
76 lldb::addr_t trap_addr);
78 virtual uint32_t NumSupportedHardwareWatchpoints();
80 virtual uint32_t SetHardwareWatchpoint(lldb::addr_t addr, size_t size,
81 uint32_t watch_flags);
83 virtual bool ClearHardwareWatchpoint(uint32_t hw_index);
85 virtual Status ClearAllHardwareWatchpoints();
87 virtual Status IsWatchpointHit(uint32_t wp_index, bool &is_hit);
89 virtual Status GetWatchpointHitIndex(uint32_t &wp_index,
90 lldb::addr_t trap_addr);
92 virtual Status IsWatchpointVacant(uint32_t wp_index, bool &is_vacant);
94 virtual lldb::addr_t GetWatchpointAddress(uint32_t wp_index);
96 // MIPS Linux kernel returns a masked address (last 3bits are masked)
97 // when a HW watchpoint is hit. However user may not have set a watchpoint on
98 // this address. This function emulates the instruction at PC and finds the
99 // base address used in the load/store instruction. This gives the exact
100 // address used to read/write the variable being watched. For example: 'n' is
101 // at 0x120010d00 and 'm' is 0x120010d04. When a watchpoint is set at 'm',
102 // then watch exception is generated even when 'n' is read/written. This
103 // function returns address of 'n' so that client can check whether a
104 // watchpoint is set on this address or not.
105 virtual lldb::addr_t GetWatchpointHitAddress(uint32_t wp_index);
107 virtual bool HardwareSingleStep(bool enable);
110 ReadRegisterValueFromMemory(const lldb_private::RegisterInfo *reg_info,
111 lldb::addr_t src_addr, size_t src_len,
112 RegisterValue ®_value);
115 WriteRegisterValueToMemory(const lldb_private::RegisterInfo *reg_info,
116 lldb::addr_t dst_addr, size_t dst_len,
117 const RegisterValue ®_value);
119 //------------------------------------------------------------------
120 // Subclasses should not override these
121 //------------------------------------------------------------------
122 virtual lldb::tid_t GetThreadID() const;
124 virtual NativeThreadProtocol &GetThread() { return m_thread; }
126 const RegisterInfo *GetRegisterInfoByName(llvm::StringRef reg_name,
127 uint32_t start_idx = 0);
129 const RegisterInfo *GetRegisterInfo(uint32_t reg_kind, uint32_t reg_num);
131 lldb::addr_t GetPC(lldb::addr_t fail_value = LLDB_INVALID_ADDRESS);
134 GetPCfromBreakpointLocation(lldb::addr_t fail_value = LLDB_INVALID_ADDRESS);
136 Status SetPC(lldb::addr_t pc);
138 lldb::addr_t GetSP(lldb::addr_t fail_value = LLDB_INVALID_ADDRESS);
140 Status SetSP(lldb::addr_t sp);
142 lldb::addr_t GetFP(lldb::addr_t fail_value = LLDB_INVALID_ADDRESS);
144 Status SetFP(lldb::addr_t fp);
146 const char *GetRegisterName(uint32_t reg);
148 lldb::addr_t GetReturnAddress(lldb::addr_t fail_value = LLDB_INVALID_ADDRESS);
150 lldb::addr_t GetFlags(lldb::addr_t fail_value = 0);
152 lldb::addr_t ReadRegisterAsUnsigned(uint32_t reg, lldb::addr_t fail_value);
154 lldb::addr_t ReadRegisterAsUnsigned(const RegisterInfo *reg_info,
155 lldb::addr_t fail_value);
157 Status WriteRegisterFromUnsigned(uint32_t reg, uint64_t uval);
159 Status WriteRegisterFromUnsigned(const RegisterInfo *reg_info, uint64_t uval);
162 // GetStopID () const
168 // SetStopID (uint32_t stop_id)
170 // m_stop_id = stop_id;
174 //------------------------------------------------------------------
175 // Classes that inherit from RegisterContext can see and modify these
176 //------------------------------------------------------------------
178 &m_thread; // The thread that this register context belongs to.
179 // uint32_t m_stop_id; // The stop ID that any data in this
180 // context is valid for
183 //------------------------------------------------------------------
184 // For RegisterContext only
185 //------------------------------------------------------------------
186 DISALLOW_COPY_AND_ASSIGN(NativeRegisterContext);
189 } // namespace lldb_private
191 #endif // liblldb_NativeRegisterContext_h_