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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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3 changed files with 69 additions and 0 deletions
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29
ARMeilleure/Decoders/OpCode32MsrReg.cs Normal file
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@ -0,0 +1,29 @@
using ARMeilleure.State;
namespace ARMeilleure.Decoders
{
class OpCode32MsrReg : OpCode32
{
public bool R { get; }
public int Mask { get; }
public int Rd { get; }
public bool Banked { get; }
public int Rn { get; }
public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCode32MsrReg(inst, address, opCode);
public OpCode32MsrReg(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
{
R = ((opCode >> 22) & 1) != 0;
Mask = (opCode >> 16) & 0xf;
Rd = (opCode >> 12) & 0xf;
Banked = ((opCode >> 9) & 1) != 0;
Rn = (opCode >> 0) & 0xf;
if (Rn == RegisterAlias.Aarch32Pc || Mask == 0)
{
Instruction = InstDescriptor.Undefined;
}
}
}
}

1
ARMeilleure/Decoders/OpCodeTable.cs
View file

@ -702,6 +702,7 @@ namespace ARMeilleure.Decoders
SetA32("<<<<00110100xxxxxxxxxxxxxxxxxxxx", InstName.Movt, InstEmit32.Movt, OpCode32AluImm16.Create);
SetA32("<<<<1110xxx1xxxxxxxx111xxxx1xxxx", InstName.Mrc, InstEmit32.Mrc, OpCode32System.Create);
SetA32("<<<<11000101xxxxxxxx111xxxxxxxxx", InstName.Mrrc, InstEmit32.Mrrc, OpCode32System.Create);
SetA32("<<<<00010x10xxxx111100000000xxxx", InstName.Msr, InstEmit32.Msr, OpCode32MsrReg.Create);
SetA32("<<<<0000000xxxxx0000xxxx1001xxxx", InstName.Mul, InstEmit32.Mul, OpCode32AluMla.Create);
SetA32("<<<<0011111x0000xxxxxxxxxxxxxxxx", InstName.Mvn, InstEmit32.Mvn, OpCode32AluImm.Create);
SetA32("<<<<0001111x0000xxxxxxxxxxx0xxxx", InstName.Mvn, InstEmit32.Mvn, OpCode32AluRsImm.Create);