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ARMeilleure: Implement TPIDR2_EL0 (#280)

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This is an implementation of the TPIDR2_EL0 register. There may be more
potential use-cases for this register not included in this PR, but this
implements the use-case seen in SuperTuxKart.
This commit is contained in:
Luke Warner 2024-11-19 14:02:24 -05:00 • committed by GitHub
parent c3831428e0
commit c0a4d95c5d
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2 changed files with 26 additions and 0 deletions
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17
src/ARMeilleure/Instructions/InstEmitSystem.cs
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@ -49,6 +49,9 @@ namespace ARMeilleure.Instructions
case 0b11_011_1101_0000_011:
EmitGetTpidrroEl0(context);
return;
case 0b11_011_1101_0000_101:
EmitGetTpidr2El0(context);
return;
case 0b11_011_1110_0000_000:
info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetCntfrqEl0));
break;
@ -84,6 +87,9 @@ namespace ARMeilleure.Instructions
case 0b11_011_1101_0000_010:
EmitSetTpidrEl0(context);
return;
case 0b11_011_1101_0000_101:
EmitGetTpidr2El0(context);
return;
default:
throw new NotImplementedException($"Unknown MSR 0x{op.RawOpCode:X8} at 0x{op.Address:X16}.");
@ -213,6 +219,17 @@ namespace ARMeilleure.Instructions
SetIntOrZR(context, op.Rt, result);
}
private static void EmitGetTpidr2El0(ArmEmitterContext context)
{
OpCodeSystem op = (OpCodeSystem)context.CurrOp;
Operand nativeContext = context.LoadArgument(OperandType.I64, 0);
Operand result = context.Load(OperandType.I64, context.Add(nativeContext, Const((ulong)NativeContext.GetTpidr2El0Offset())));
SetIntOrZR(context, op.Rt, result);
}
private static void EmitSetNzcv(ArmEmitterContext context)
{
OpCodeSystem op = (OpCodeSystem)context.CurrOp;