36 lines
894 B
C#
36 lines
894 B
C#
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using ChocolArm64.Instructions;
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namespace ChocolArm64.Decoders
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{
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class OpCodeSimdIns64 : OpCodeSimd64
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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 OpCodeSimdIns64(Inst 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 = InstEmit.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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