36 lines
891 B
C#
36 lines
891 B
C#
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using ChocolArm64.Instruction;
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namespace ChocolArm64.Decoder
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{
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class AOpCodeSimdIns : AOpCodeSimd
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{
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public int SrcIndex { get; private set; }
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public int DstIndex { get; private set; }
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public AOpCodeSimdIns(AInst Inst, long Position, int OpCode) : base(Inst, Position, OpCode)
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{
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int Imm4 = (OpCode >> 11) & 0xf;
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int Imm5 = (OpCode >> 16) & 0x1f;
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if (Imm5 == 0b10000)
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{
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Emitter = AInstEmit.Und;
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return;
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}
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Size = Imm5 & -Imm5;
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switch (Size)
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{
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case 1: Size = 0; break;
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case 2: Size = 1; break;
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case 4: Size = 2; break;
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case 8: Size = 3; break;
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}
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SrcIndex = Imm4 >> Size;
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DstIndex = Imm5 >> (Size + 1);
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}
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}
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}
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