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Implement MSR instruction for A32 (#2585)

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* Implement MSR instruction

Fix #1342.

Now Pocket Rumble is playable.

* Address gdkchan's comments

* Address gdkchan's comments

* Address gdkchan's comment
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Mary 2021-08-27 00:07:44 +02:00 • committed by GitHub
parent 8e1adb95cf
commit 501c3d5cea
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39
ARMeilleure/Instructions/InstEmitSystem32.cs
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@ -169,6 +169,45 @@ namespace ARMeilleure.Instructions
SetIntA32(context, op.CRn, context.ConvertI64ToI32(context.ShiftRightUI(result, Const(32))));
}
public static void Msr(ArmEmitterContext context)
{
OpCode32MsrReg op = (OpCode32MsrReg)context.CurrOp;
if (op.R)
{
throw new NotImplementedException("SPSR");
}
else
{
if ((op.Mask & 8) != 0)
{
Operand value = GetIntA32(context, op.Rn);
EmitSetNzcv(context, value);
Operand q = context.ShiftRightUI(value, Const((int)PState.QFlag));
q = context.BitwiseAnd(q, Const(1));
SetFlag(context, PState.QFlag, q);
}
if ((op.Mask & 4) != 0)
{
throw new NotImplementedException("APSR_g");
}
if ((op.Mask & 2) != 0)
{
throw new NotImplementedException("CPSR_x");
}
if ((op.Mask & 1) != 0)
{
throw new NotImplementedException("CPSR_c");
}
}
}
public static void Nop(ArmEmitterContext context) { }
public static void Vmrs(ArmEmitterContext context)