50 lines
1.6 KiB
C#
50 lines
1.6 KiB
C#
using ARMeilleure.State;
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namespace ARMeilleure.Decoders
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{
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class OpCode32SimdMemPair : OpCode32, IOpCode32Simd
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{
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private static int[] _regsMap =
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{
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1, 1, 4, 2,
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1, 1, 3, 1,
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1, 1, 2, 1,
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1, 1, 1, 1
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};
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public int Vd { get; }
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public int Rn { get; }
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public int Rm { get; }
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public int Align { get; }
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public bool WBack { get; }
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public bool RegisterIndex { get; }
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public int Size { get; }
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public int Elems => 8 >> Size;
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public int Regs { get; }
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public int Increment { get; }
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public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCode32SimdMemPair(inst, address, opCode, false);
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public static OpCode CreateT32(InstDescriptor inst, ulong address, int opCode) => new OpCode32SimdMemPair(inst, address, opCode, true);
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public OpCode32SimdMemPair(InstDescriptor inst, ulong address, int opCode, bool isThumb) : base(inst, address, opCode)
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{
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IsThumb = isThumb;
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Vd = (opCode >> 12) & 0xf;
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Vd |= (opCode >> 18) & 0x10;
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Size = (opCode >> 6) & 0x3;
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Align = (opCode >> 4) & 0x3;
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Rm = (opCode >> 0) & 0xf;
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Rn = (opCode >> 16) & 0xf;
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WBack = Rm != RegisterAlias.Aarch32Pc;
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RegisterIndex = Rm != RegisterAlias.Aarch32Pc && Rm != RegisterAlias.Aarch32Sp;
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Regs = _regsMap[(opCode >> 8) & 0xf];
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Increment = ((opCode >> 8) & 0x1) + 1;
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}
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}
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}
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