39 lines
948 B
C#
39 lines
948 B
C#
using ChocolArm64.Instructions;
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using System;
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namespace ChocolArm64.Decoders
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{
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class OpCodeAluImm64 : OpCodeAlu64, IOpCodeAluImm64
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{
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public long Imm { get; private set; }
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public OpCodeAluImm64(Inst inst, long position, int opCode) : base(inst, position, opCode)
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{
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if (DataOp == DataOp.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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Imm <<= shift * 12;
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}
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else if (DataOp == DataOp.Logical)
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{
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var bm = DecoderHelper.DecodeBitMask(opCode, true);
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if (bm.IsUndefined)
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{
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Emitter = InstEmit.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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} |