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
|
using ARMeilleure.IntermediateRepresentation;
using ARMeilleure.Memory;
using System;
using System.Runtime.InteropServices;
namespace ARMeilleure.State
{
class NativeContext : IDisposable
{
private const int IntSize = 8;
private const int VecSize = 16;
private const int FlagSize = 4;
private const int ExtraSize = 8;
private const int TotalSize = RegisterConsts.IntRegsCount * IntSize +
RegisterConsts.VecRegsCount * VecSize +
RegisterConsts.FlagsCount * FlagSize +
RegisterConsts.FpFlagsCount * FlagSize + ExtraSize;
public IntPtr BasePtr { get; }
public NativeContext()
{
BasePtr = MemoryManagement.Allocate(TotalSize);
}
public ulong GetX(int index)
{
if ((uint)index >= RegisterConsts.IntRegsCount)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
return (ulong)Marshal.ReadInt64(BasePtr, index * IntSize);
}
public void SetX(int index, ulong value)
{
if ((uint)index >= RegisterConsts.IntRegsCount)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
Marshal.WriteInt64(BasePtr, index * IntSize, (long)value);
}
public V128 GetV(int index)
{
if ((uint)index >= RegisterConsts.IntRegsCount)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
int offset = RegisterConsts.IntRegsCount * IntSize + index * VecSize;
return new V128(
Marshal.ReadInt64(BasePtr, offset + 0),
Marshal.ReadInt64(BasePtr, offset + 8));
}
public void SetV(int index, V128 value)
{
if ((uint)index >= RegisterConsts.IntRegsCount)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
int offset = RegisterConsts.IntRegsCount * IntSize + index * VecSize;
Marshal.WriteInt64(BasePtr, offset + 0, value.Extract<long>(0));
Marshal.WriteInt64(BasePtr, offset + 8, value.Extract<long>(1));
}
public bool GetPstateFlag(PState flag)
{
if ((uint)flag >= RegisterConsts.FlagsCount)
{
throw new ArgumentException($"Invalid flag \"{flag}\" specified.");
}
int offset =
RegisterConsts.IntRegsCount * IntSize +
RegisterConsts.VecRegsCount * VecSize + (int)flag * FlagSize;
int value = Marshal.ReadInt32(BasePtr, offset);
return value != 0;
}
public void SetPstateFlag(PState flag, bool value)
{
if ((uint)flag >= RegisterConsts.FlagsCount)
{
throw new ArgumentException($"Invalid flag \"{flag}\" specified.");
}
int offset =
RegisterConsts.IntRegsCount * IntSize +
RegisterConsts.VecRegsCount * VecSize + (int)flag * FlagSize;
Marshal.WriteInt32(BasePtr, offset, value ? 1 : 0);
}
public bool GetFPStateFlag(FPState flag)
{
if ((uint)flag >= RegisterConsts.FlagsCount)
{
throw new ArgumentException($"Invalid flag \"{flag}\" specified.");
}
int offset =
RegisterConsts.IntRegsCount * IntSize +
RegisterConsts.VecRegsCount * VecSize +
RegisterConsts.FlagsCount * FlagSize + (int)flag * FlagSize;
int value = Marshal.ReadInt32(BasePtr, offset);
return value != 0;
}
public void SetFPStateFlag(FPState flag, bool value)
{
if ((uint)flag >= RegisterConsts.FlagsCount)
{
throw new ArgumentException($"Invalid flag \"{flag}\" specified.");
}
int offset =
RegisterConsts.IntRegsCount * IntSize +
RegisterConsts.VecRegsCount * VecSize +
RegisterConsts.FlagsCount * FlagSize + (int)flag * FlagSize;
Marshal.WriteInt32(BasePtr, offset, value ? 1 : 0);
}
public int GetCounter()
{
return Marshal.ReadInt32(BasePtr, GetCounterOffset());
}
public void SetCounter(int value)
{
Marshal.WriteInt32(BasePtr, GetCounterOffset(), value);
}
public static int GetRegisterOffset(Register reg)
{
int offset, size;
if (reg.Type == RegisterType.Integer)
{
offset = reg.Index * IntSize;
size = IntSize;
}
else if (reg.Type == RegisterType.Vector)
{
offset = RegisterConsts.IntRegsCount * IntSize + reg.Index * VecSize;
size = VecSize;
}
else /* if (reg.Type == RegisterType.Flag) */
{
offset = RegisterConsts.IntRegsCount * IntSize +
RegisterConsts.VecRegsCount * VecSize + reg.Index * FlagSize;
size = FlagSize;
}
if ((uint)(offset + size) > (uint)TotalSize)
{
throw new ArgumentException("Invalid register.");
}
return offset;
}
public static int GetCounterOffset()
{
return RegisterConsts.IntRegsCount * IntSize +
RegisterConsts.VecRegsCount * VecSize +
RegisterConsts.FlagsCount * FlagSize +
RegisterConsts.FpFlagsCount * FlagSize;
}
public static int GetCallAddressOffset()
{
return RegisterConsts.IntRegsCount * IntSize +
RegisterConsts.VecRegsCount * VecSize +
RegisterConsts.FlagsCount * FlagSize +
RegisterConsts.FpFlagsCount * FlagSize + 4;
}
public void Dispose()
{
MemoryManagement.Free(BasePtr);
}
}
}
|
