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
|
using Ryujinx.Graphics.Shader.Decoders;
using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.Translation;
using System;
using static Ryujinx.Graphics.Shader.Instructions.InstEmitHelper;
using static Ryujinx.Graphics.Shader.IntermediateRepresentation.OperandHelper;
namespace Ryujinx.Graphics.Shader.Instructions
{
static class InstEmitAluHelper
{
public static long GetIntMin(IDstFmt type)
{
return type switch
{
IDstFmt.U16 => ushort.MinValue,
IDstFmt.S16 => short.MinValue,
IDstFmt.U32 => uint.MinValue,
IDstFmt.S32 => int.MinValue,
_ => throw new ArgumentException($"The type \"{type}\" is not a supported integer type.")
};
}
public static long GetIntMax(IDstFmt type)
{
return type switch
{
IDstFmt.U16 => ushort.MaxValue,
IDstFmt.S16 => short.MaxValue,
IDstFmt.U32 => uint.MaxValue,
IDstFmt.S32 => int.MaxValue,
_ => throw new ArgumentException($"The type \"{type}\" is not a supported integer type.")
};
}
public static long GetIntMin(ISrcDstFmt type)
{
return type switch
{
ISrcDstFmt.U8 => byte.MinValue,
ISrcDstFmt.S8 => sbyte.MinValue,
ISrcDstFmt.U16 => ushort.MinValue,
ISrcDstFmt.S16 => short.MinValue,
ISrcDstFmt.U32 => uint.MinValue,
ISrcDstFmt.S32 => int.MinValue,
_ => throw new ArgumentException($"The type \"{type}\" is not a supported integer type.")
};
}
public static long GetIntMax(ISrcDstFmt type)
{
return type switch
{
ISrcDstFmt.U8 => byte.MaxValue,
ISrcDstFmt.S8 => sbyte.MaxValue,
ISrcDstFmt.U16 => ushort.MaxValue,
ISrcDstFmt.S16 => short.MaxValue,
ISrcDstFmt.U32 => uint.MaxValue,
ISrcDstFmt.S32 => int.MaxValue,
_ => throw new ArgumentException($"The type \"{type}\" is not a supported integer type.")
};
}
public static Operand GetPredLogicalOp(EmitterContext context, BoolOp logicOp, Operand input, Operand pred)
{
return logicOp switch
{
BoolOp.And => context.BitwiseAnd(input, pred),
BoolOp.Or => context.BitwiseOr(input, pred),
BoolOp.Xor => context.BitwiseExclusiveOr(input, pred),
_ => input
};
}
public static Operand Extend(EmitterContext context, Operand src, VectorSelect type)
{
return type switch
{
VectorSelect.U8B0 => ZeroExtendTo32(context, context.ShiftRightU32(src, Const(0)), 8),
VectorSelect.U8B1 => ZeroExtendTo32(context, context.ShiftRightU32(src, Const(8)), 8),
VectorSelect.U8B2 => ZeroExtendTo32(context, context.ShiftRightU32(src, Const(16)), 8),
VectorSelect.U8B3 => ZeroExtendTo32(context, context.ShiftRightU32(src, Const(24)), 8),
VectorSelect.U16H0 => ZeroExtendTo32(context, context.ShiftRightU32(src, Const(0)), 16),
VectorSelect.U16H1 => ZeroExtendTo32(context, context.ShiftRightU32(src, Const(16)), 16),
VectorSelect.S8B0 => SignExtendTo32(context, context.ShiftRightU32(src, Const(0)), 8),
VectorSelect.S8B1 => SignExtendTo32(context, context.ShiftRightU32(src, Const(8)), 8),
VectorSelect.S8B2 => SignExtendTo32(context, context.ShiftRightU32(src, Const(16)), 8),
VectorSelect.S8B3 => SignExtendTo32(context, context.ShiftRightU32(src, Const(24)), 8),
VectorSelect.S16H0 => SignExtendTo32(context, context.ShiftRightU32(src, Const(0)), 16),
VectorSelect.S16H1 => SignExtendTo32(context, context.ShiftRightU32(src, Const(16)), 16),
_ => src
};
}
public static void SetZnFlags(EmitterContext context, Operand dest, bool setCC, bool extended = false)
{
if (!setCC)
{
return;
}
if (extended)
{
// When the operation is extended, it means we are doing
// the operation on a long word with any number of bits,
// so we need to AND the zero flag from result with the
// previous result when extended is specified, to ensure
// we have ZF set only if all words are zero, and not just
// the last one.
Operand oldZF = GetZF();
Operand res = context.BitwiseAnd(context.ICompareEqual(dest, Const(0)), oldZF);
context.Copy(GetZF(), res);
}
else
{
context.Copy(GetZF(), context.ICompareEqual(dest, Const(0)));
}
context.Copy(GetNF(), context.ICompareLess(dest, Const(0)));
}
public static void SetFPZnFlags(EmitterContext context, Operand dest, bool setCC, Instruction fpType = Instruction.FP32)
{
if (setCC)
{
Operand zero = ConstF(0);
if (fpType == Instruction.FP64)
{
zero = context.FP32ConvertToFP64(zero);
}
context.Copy(GetZF(), context.FPCompareEqual(dest, zero, fpType));
context.Copy(GetNF(), context.FPCompareLess (dest, zero, fpType));
}
}
public static (Operand, Operand) NegateLong(EmitterContext context, Operand low, Operand high)
{
low = context.BitwiseNot(low);
high = context.BitwiseNot(high);
low = AddWithCarry(context, low, Const(1), out Operand carryOut);
high = context.IAdd(high, carryOut);
return (low, high);
}
public static Operand AddWithCarry(EmitterContext context, Operand lhs, Operand rhs, out Operand carryOut)
{
Operand result = context.IAdd(lhs, rhs);
// C = Rd < Rn
carryOut = context.INegate(context.ICompareLessUnsigned(result, lhs));
return result;
}
}
}
|
