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
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
//===-- Opcode.h ------------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef lldb_Opcode_h
#define lldb_Opcode_h
// C Includes
#include <string.h>
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/lldb-public.h"
namespace lldb
{
class SBInstruction;
}
namespace lldb_private {
class Opcode
{
public:
enum Type
{
eTypeInvalid,
eType8,
eType16,
eType32,
eType64,
eTypeBytes
};
Opcode () : m_type (eTypeInvalid)
{
}
Opcode (uint8_t inst) : m_type (eType8)
{
m_data.inst8 = inst;
}
Opcode (uint16_t inst) : m_type (eType16)
{
m_data.inst16 = inst;
}
Opcode (uint32_t inst) : m_type (eType32)
{
m_data.inst32 = inst;
}
Opcode (uint64_t inst) : m_type (eType64)
{
m_data.inst64 = inst;
}
Opcode (uint8_t *bytes, size_t length)
{
SetOpcodeBytes (bytes, length);
}
void
Clear()
{
m_type = Opcode::eTypeInvalid;
}
Opcode::Type
GetType () const
{
return m_type;
}
uint8_t
GetOpcode8 (uint8_t invalid_opcode = UINT8_MAX) const
{
switch (m_type)
{
case Opcode::eTypeInvalid: break;
case Opcode::eType8: return m_data.inst8;
case Opcode::eType16: break;
case Opcode::eType32: break;
case Opcode::eType64: break;
case Opcode::eTypeBytes: break;
break;
}
return invalid_opcode;
}
uint16_t
GetOpcode16 (uint16_t invalid_opcode = UINT16_MAX) const
{
switch (m_type)
{
case Opcode::eTypeInvalid: break;
case Opcode::eType8: return m_data.inst8;
case Opcode::eType16: return m_data.inst16;
case Opcode::eType32: break;
case Opcode::eType64: break;
case Opcode::eTypeBytes: break;
}
return invalid_opcode;
}
uint32_t
GetOpcode32 (uint32_t invalid_opcode = UINT32_MAX) const
{
switch (m_type)
{
case Opcode::eTypeInvalid: break;
case Opcode::eType8: return m_data.inst8;
case Opcode::eType16: return m_data.inst16;
case Opcode::eType32: return m_data.inst32;
case Opcode::eType64: break;
case Opcode::eTypeBytes: break;
}
return invalid_opcode;
}
uint64_t
GetOpcode64 (uint64_t invalid_opcode = UINT64_MAX) const
{
switch (m_type)
{
case Opcode::eTypeInvalid: break;
case Opcode::eType8: return m_data.inst8;
case Opcode::eType16: return m_data.inst16;
case Opcode::eType32: return m_data.inst32;
case Opcode::eType64: return m_data.inst64;
case Opcode::eTypeBytes: break;
}
return invalid_opcode;
}
void
SetOpcode8 (uint8_t inst)
{
m_type = eType8;
m_data.inst8 = inst;
}
void
SetOpcode16 (uint16_t inst)
{
m_type = eType16;
m_data.inst16 = inst;
}
void
SetOpcode32 (uint32_t inst)
{
m_type = eType32;
m_data.inst32 = inst;
}
void
SetOpcode64 (uint64_t inst)
{
m_type = eType64;
m_data.inst64 = inst;
}
void
SetOpcodeBytes (const void *bytes, size_t length)
{
if (bytes && length > 0)
{
m_type = eTypeBytes;
m_data.inst.length = length;
assert (length < sizeof (m_data.inst.bytes));
memcpy (m_data.inst.bytes, bytes, length);
}
else
{
m_type = eTypeInvalid;
m_data.inst.length = 0;
}
}
int
Dump (Stream *s, uint32_t min_byte_width);
const void *
GetOpcodeBytes () const
{
if (m_type == Opcode::eTypeBytes)
return m_data.inst.bytes;
return NULL;
}
uint32_t
GetByteSize () const
{
switch (m_type)
{
case Opcode::eTypeInvalid: break;
case Opcode::eType8: return sizeof(m_data.inst8);
case Opcode::eType16: return sizeof(m_data.inst16);
case Opcode::eType32: return sizeof(m_data.inst32);
case Opcode::eType64: return sizeof(m_data.inst64);
case Opcode::eTypeBytes: return m_data.inst.length;
}
return 0;
}
// Get the opcode exactly as it would be laid out in memory.
uint32_t
GetData (DataExtractor &data,
lldb::AddressClass address_class) const;
protected:
friend class lldb::SBInstruction;
const void *
GetOpcodeDataBytes () const
{
switch (m_type)
{
case Opcode::eTypeInvalid: break;
case Opcode::eType8: return &m_data.inst8;
case Opcode::eType16: return &m_data.inst16;
case Opcode::eType32: return &m_data.inst32;
case Opcode::eType64: return &m_data.inst64;
case Opcode::eTypeBytes: return m_data.inst.bytes;
}
return NULL;
}
lldb::ByteOrder
GetDataByteOrder () const;
Opcode::Type m_type;
union
{
uint8_t inst8;
uint16_t inst16;
uint32_t inst32;
uint64_t inst64;
struct
{
uint8_t bytes[16]; // This must be big enough to handle any opcode for any supported target.
uint8_t length;
} inst;
} m_data;
};
} // namespace lldb_private
#endif // lldb_Opcode_h
|
