blob: 6754be7a87f4c1db5e25847cfafdb6448a872d01 (
plain)
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
|
using ChocolArm64.Decoder;
using ChocolArm64.State;
using ChocolArm64.Translation;
using System;
using System.Reflection;
using System.Reflection.Emit;
namespace ChocolArm64.Instruction
{
static partial class AInstEmit
{
public static void Mrs(AILEmitterCtx Context)
{
AOpCodeSystem Op = (AOpCodeSystem)Context.CurrOp;
Context.EmitLdarg(ATranslatedSub.StateArgIdx);
string PropName;
switch (GetPackedId(Op))
{
case 0b11_011_0000_0000_001: PropName = nameof(AThreadState.CtrEl0); break;
case 0b11_011_0000_0000_111: PropName = nameof(AThreadState.DczidEl0); break;
case 0b11_011_0100_0100_000: PropName = nameof(AThreadState.Fpcr); break;
case 0b11_011_0100_0100_001: PropName = nameof(AThreadState.Fpsr); break;
case 0b11_011_1101_0000_010: PropName = nameof(AThreadState.TpidrEl0); break;
case 0b11_011_1101_0000_011: PropName = nameof(AThreadState.Tpidr); break;
case 0b11_011_1110_0000_001: PropName = nameof(AThreadState.CntpctEl0); break;
default: throw new NotImplementedException($"Unknown MRS at {Op.Position:x16}");
}
Context.EmitCallPropGet(typeof(AThreadState), PropName);
PropertyInfo PropInfo = typeof(AThreadState).GetProperty(PropName);
if (PropInfo.PropertyType != typeof(long) &&
PropInfo.PropertyType != typeof(ulong))
{
Context.Emit(OpCodes.Conv_U8);
}
Context.EmitStintzr(Op.Rt);
}
public static void Msr(AILEmitterCtx Context)
{
AOpCodeSystem Op = (AOpCodeSystem)Context.CurrOp;
Context.EmitLdarg(ATranslatedSub.StateArgIdx);
Context.EmitLdintzr(Op.Rt);
string PropName;
switch (GetPackedId(Op))
{
case 0b11_011_0100_0100_000: PropName = nameof(AThreadState.Fpcr); break;
case 0b11_011_0100_0100_001: PropName = nameof(AThreadState.Fpsr); break;
case 0b11_011_1101_0000_010: PropName = nameof(AThreadState.TpidrEl0); break;
default: throw new NotImplementedException($"Unknown MSR at {Op.Position:x16}");
}
PropertyInfo PropInfo = typeof(AThreadState).GetProperty(PropName);
if (PropInfo.PropertyType != typeof(long) &&
PropInfo.PropertyType != typeof(ulong))
{
Context.Emit(OpCodes.Conv_U4);
}
Context.EmitCallPropSet(typeof(AThreadState), PropName);
}
public static void Nop(AILEmitterCtx Context)
{
//Do nothing.
}
public static void Sys(AILEmitterCtx Context)
{
//This instruction is used to do some operations on the CPU like cache invalidation,
//address translation and the like.
//We treat it as no-op here since we don't have any cache being emulated anyway.
AOpCodeSystem Op = (AOpCodeSystem)Context.CurrOp;
switch (GetPackedId(Op))
{
case 0b11_011_0111_0100_001:
{
//DC ZVA
for (int Offs = 0; Offs < (4 << AThreadState.DczSizeLog2); Offs += 8)
{
Context.EmitLdarg(ATranslatedSub.MemoryArgIdx);
Context.EmitLdint(Op.Rt);
Context.EmitLdc_I(Offs);
Context.Emit(OpCodes.Add);
Context.EmitLdc_I8(0);
AInstEmitMemoryHelper.EmitWriteCall(Context, 3);
}
break;
}
}
}
private static int GetPackedId(AOpCodeSystem Op)
{
int Id;
Id = Op.Op2 << 0;
Id |= Op.CRm << 3;
Id |= Op.CRn << 7;
Id |= Op.Op1 << 11;
Id |= Op.Op0 << 14;
return Id;
}
}
}
|
