41 lines
983 B
C#
41 lines
983 B
C#
using ChocolArm64.Instruction;
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using System;
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namespace ChocolArm64.Decoder
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{
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class AOpCodeAluImm : AOpCodeAlu, IAOpCodeAluImm
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{
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public long Imm { get; private set; }
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public AOpCodeAluImm(AInst Inst, long Position, int OpCode) : base(Inst, Position, OpCode)
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{
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if (DataOp == ADataOp.Arithmetic)
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{
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Imm = (OpCode >> 10) & 0xfff;
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int Shift = (OpCode >> 22) & 3;
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//Assert Shift < 2
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Imm <<= Shift * 12;
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}
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else if (DataOp == ADataOp.Logical)
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{
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var BM = ADecoderHelper.DecodeBitMask(OpCode, true);
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if (BM.IsUndefined)
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{
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Emitter = AInstEmit.Und;
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return;
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}
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Imm = BM.WMask;
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}
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else
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{
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throw new ArgumentException(nameof(OpCode));
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}
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}
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}
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} |