1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
//===-- NativeRegisterContext.h ---------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef liblldb_NativeRegisterContext_h_
#define liblldb_NativeRegisterContext_h_
#include "lldb/Host/common/NativeWatchpointList.h"
#include "lldb/lldb-private.h"
namespace lldb_private {
class NativeThreadProtocol;
class NativeRegisterContext
: public std::enable_shared_from_this<NativeRegisterContext> {
public:
//------------------------------------------------------------------
// Constructors and Destructors
//------------------------------------------------------------------
NativeRegisterContext(NativeThreadProtocol &thread);
virtual ~NativeRegisterContext();
// void
// InvalidateIfNeeded (bool force);
//------------------------------------------------------------------
// Subclasses must override these functions
//------------------------------------------------------------------
// virtual void
// InvalidateAllRegisters () = 0;
virtual uint32_t GetRegisterCount() const = 0;
virtual uint32_t GetUserRegisterCount() const = 0;
virtual const RegisterInfo *GetRegisterInfoAtIndex(uint32_t reg) const = 0;
const char *GetRegisterSetNameForRegisterAtIndex(uint32_t reg_index) const;
virtual uint32_t GetRegisterSetCount() const = 0;
virtual const RegisterSet *GetRegisterSet(uint32_t set_index) const = 0;
virtual Status ReadRegister(const RegisterInfo *reg_info,
RegisterValue ®_value) = 0;
virtual Status WriteRegister(const RegisterInfo *reg_info,
const RegisterValue ®_value) = 0;
virtual Status ReadAllRegisterValues(lldb::DataBufferSP &data_sp) = 0;
virtual Status WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) = 0;
uint32_t ConvertRegisterKindToRegisterNumber(uint32_t kind,
uint32_t num) const;
//------------------------------------------------------------------
// Subclasses can override these functions if desired
//------------------------------------------------------------------
virtual uint32_t NumSupportedHardwareBreakpoints();
virtual uint32_t SetHardwareBreakpoint(lldb::addr_t addr, size_t size);
virtual bool ClearHardwareBreakpoint(uint32_t hw_idx);
virtual Status ClearAllHardwareBreakpoints();
virtual Status GetHardwareBreakHitIndex(uint32_t &bp_index,
lldb::addr_t trap_addr);
virtual uint32_t NumSupportedHardwareWatchpoints();
virtual uint32_t SetHardwareWatchpoint(lldb::addr_t addr, size_t size,
uint32_t watch_flags);
virtual bool ClearHardwareWatchpoint(uint32_t hw_index);
virtual Status ClearAllHardwareWatchpoints();
virtual Status IsWatchpointHit(uint32_t wp_index, bool &is_hit);
virtual Status GetWatchpointHitIndex(uint32_t &wp_index,
lldb::addr_t trap_addr);
virtual Status IsWatchpointVacant(uint32_t wp_index, bool &is_vacant);
virtual lldb::addr_t GetWatchpointAddress(uint32_t wp_index);
// MIPS Linux kernel returns a masked address (last 3bits are masked)
// when a HW watchpoint is hit. However user may not have set a watchpoint on
// this address. This function emulates the instruction at PC and finds the
// base address used in the load/store instruction. This gives the exact
// address used to read/write the variable being watched. For example: 'n' is
// at 0x120010d00 and 'm' is 0x120010d04. When a watchpoint is set at 'm',
// then watch exception is generated even when 'n' is read/written. This
// function returns address of 'n' so that client can check whether a
// watchpoint is set on this address or not.
virtual lldb::addr_t GetWatchpointHitAddress(uint32_t wp_index);
virtual bool HardwareSingleStep(bool enable);
virtual Status
ReadRegisterValueFromMemory(const lldb_private::RegisterInfo *reg_info,
lldb::addr_t src_addr, size_t src_len,
RegisterValue ®_value);
virtual Status
WriteRegisterValueToMemory(const lldb_private::RegisterInfo *reg_info,
lldb::addr_t dst_addr, size_t dst_len,
const RegisterValue ®_value);
//------------------------------------------------------------------
// Subclasses should not override these
//------------------------------------------------------------------
virtual lldb::tid_t GetThreadID() const;
virtual NativeThreadProtocol &GetThread() { return m_thread; }
const RegisterInfo *GetRegisterInfoByName(llvm::StringRef reg_name,
uint32_t start_idx = 0);
const RegisterInfo *GetRegisterInfo(uint32_t reg_kind, uint32_t reg_num);
lldb::addr_t GetPC(lldb::addr_t fail_value = LLDB_INVALID_ADDRESS);
virtual lldb::addr_t
GetPCfromBreakpointLocation(lldb::addr_t fail_value = LLDB_INVALID_ADDRESS);
Status SetPC(lldb::addr_t pc);
lldb::addr_t GetSP(lldb::addr_t fail_value = LLDB_INVALID_ADDRESS);
Status SetSP(lldb::addr_t sp);
lldb::addr_t GetFP(lldb::addr_t fail_value = LLDB_INVALID_ADDRESS);
Status SetFP(lldb::addr_t fp);
const char *GetRegisterName(uint32_t reg);
lldb::addr_t GetReturnAddress(lldb::addr_t fail_value = LLDB_INVALID_ADDRESS);
lldb::addr_t GetFlags(lldb::addr_t fail_value = 0);
lldb::addr_t ReadRegisterAsUnsigned(uint32_t reg, lldb::addr_t fail_value);
lldb::addr_t ReadRegisterAsUnsigned(const RegisterInfo *reg_info,
lldb::addr_t fail_value);
Status WriteRegisterFromUnsigned(uint32_t reg, uint64_t uval);
Status WriteRegisterFromUnsigned(const RegisterInfo *reg_info, uint64_t uval);
// uint32_t
// GetStopID () const
// {
// return m_stop_id;
// }
// void
// SetStopID (uint32_t stop_id)
// {
// m_stop_id = stop_id;
// }
protected:
//------------------------------------------------------------------
// Classes that inherit from RegisterContext can see and modify these
//------------------------------------------------------------------
NativeThreadProtocol
&m_thread; // The thread that this register context belongs to.
// uint32_t m_stop_id; // The stop ID that any data in this
// context is valid for
private:
//------------------------------------------------------------------
// For RegisterContext only
//------------------------------------------------------------------
DISALLOW_COPY_AND_ASSIGN(NativeRegisterContext);
};
} // namespace lldb_private
#endif // liblldb_NativeRegisterContext_h_
|
