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
|
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
namespace Ryujinx.Graphics.Device
{
public class DeviceState<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicFields)] TState> : IDeviceState where TState : unmanaged
{
private const int RegisterSize = sizeof(int);
public TState State;
private static uint Size => (uint)(Unsafe.SizeOf<TState>() + RegisterSize - 1) / RegisterSize;
private readonly Func<int>[] _readCallbacks;
private readonly Action<int>[] _writeCallbacks;
private readonly Dictionary<uint, string> _fieldNamesForDebug;
private readonly Action<string> _debugLogCallback;
public DeviceState(IReadOnlyDictionary<string, RwCallback> callbacks = null, Action<string> debugLogCallback = null)
{
_readCallbacks = new Func<int>[Size];
_writeCallbacks = new Action<int>[Size];
if (debugLogCallback != null)
{
_fieldNamesForDebug = new Dictionary<uint, string>();
_debugLogCallback = debugLogCallback;
}
var fields = typeof(TState).GetFields();
int offset = 0;
for (int fieldIndex = 0; fieldIndex < fields.Length; fieldIndex++)
{
var field = fields[fieldIndex];
int sizeOfField = SizeCalculator.SizeOf(field.FieldType);
for (int i = 0; i < ((sizeOfField + 3) & ~3); i += 4)
{
int index = (offset + i) / RegisterSize;
if (callbacks != null && callbacks.TryGetValue(field.Name, out var cb))
{
if (cb.Read != null)
{
_readCallbacks[index] = cb.Read;
}
if (cb.Write != null)
{
_writeCallbacks[index] = cb.Write;
}
}
}
if (debugLogCallback != null)
{
_fieldNamesForDebug.Add((uint)offset, field.Name);
}
offset += sizeOfField;
}
Debug.Assert(offset == Unsafe.SizeOf<TState>());
}
public int Read(int offset)
{
uint index = (uint)offset / RegisterSize;
if (index < Size)
{
uint alignedOffset = index * RegisterSize;
var readCallback = Unsafe.Add(ref MemoryMarshal.GetArrayDataReference(_readCallbacks), (IntPtr)index);
if (readCallback != null)
{
return readCallback();
}
else
{
return GetRefUnchecked<int>(alignedOffset);
}
}
return 0;
}
public void Write(int offset, int data)
{
uint index = (uint)offset / RegisterSize;
if (index < Size)
{
uint alignedOffset = index * RegisterSize;
DebugWrite(alignedOffset, data);
GetRefIntAlignedUncheck(index) = data;
Unsafe.Add(ref MemoryMarshal.GetArrayDataReference(_writeCallbacks), (IntPtr)index)?.Invoke(data);
}
}
public void WriteWithRedundancyCheck(int offset, int data, out bool changed)
{
uint index = (uint)offset / RegisterSize;
if (index < Size)
{
uint alignedOffset = index * RegisterSize;
DebugWrite(alignedOffset, data);
ref var storage = ref GetRefIntAlignedUncheck(index);
changed = storage != data;
storage = data;
Unsafe.Add(ref MemoryMarshal.GetArrayDataReference(_writeCallbacks), (IntPtr)index)?.Invoke(data);
}
else
{
changed = false;
}
}
[Conditional("DEBUG")]
private void DebugWrite(uint alignedOffset, int data)
{
if (_fieldNamesForDebug != null && _fieldNamesForDebug.TryGetValue(alignedOffset, out string fieldName))
{
_debugLogCallback($"{typeof(TState).Name}.{fieldName} = 0x{data:X}");
}
}
public ref T GetRef<T>(int offset) where T : unmanaged
{
if ((uint)(offset + Unsafe.SizeOf<T>()) > Unsafe.SizeOf<TState>())
{
throw new ArgumentOutOfRangeException(nameof(offset));
}
return ref GetRefUnchecked<T>((uint)offset);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private ref T GetRefUnchecked<T>(uint offset) where T : unmanaged
{
return ref Unsafe.As<TState, T>(ref Unsafe.AddByteOffset(ref State, (IntPtr)offset));
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private ref int GetRefIntAlignedUncheck(ulong index)
{
return ref Unsafe.Add(ref Unsafe.As<TState, int>(ref State), (IntPtr)index);
}
}
}
|
