diff options
Diffstat (limited to 'ChocolArm64/Decoder/AOpCodeSimdIns.cs')
| -rw-r--r-- | ChocolArm64/Decoder/AOpCodeSimdIns.cs | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/ChocolArm64/Decoder/AOpCodeSimdIns.cs b/ChocolArm64/Decoder/AOpCodeSimdIns.cs new file mode 100644 index 00000000..0b60bbe8 --- /dev/null +++ b/ChocolArm64/Decoder/AOpCodeSimdIns.cs @@ -0,0 +1,36 @@ +using ChocolArm64.Instruction; + +namespace ChocolArm64.Decoder +{ + class AOpCodeSimdIns : AOpCodeSimd + { + public int SrcIndex { get; private set; } + public int DstIndex { get; private set; } + + public AOpCodeSimdIns(AInst Inst, long Position, int OpCode) : base(Inst, Position, OpCode) + { + int Imm4 = (OpCode >> 11) & 0xf; + int Imm5 = (OpCode >> 16) & 0x1f; + + if (Imm5 == 0b10000) + { + Emitter = AInstEmit.Und; + + return; + } + + Size = Imm5 & -Imm5; + + switch (Size) + { + case 1: Size = 0; break; + case 2: Size = 1; break; + case 4: Size = 2; break; + case 8: Size = 3; break; + } + + SrcIndex = Imm4 >> Size; + DstIndex = Imm5 >> (Size + 1); + } + } +}
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