diff options
Diffstat (limited to 'ChocolArm64/Decoders/OpCodeSimdIns64.cs')
| -rw-r--r-- | ChocolArm64/Decoders/OpCodeSimdIns64.cs | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/ChocolArm64/Decoders/OpCodeSimdIns64.cs b/ChocolArm64/Decoders/OpCodeSimdIns64.cs new file mode 100644 index 00000000..3b25faeb --- /dev/null +++ b/ChocolArm64/Decoders/OpCodeSimdIns64.cs @@ -0,0 +1,36 @@ +using ChocolArm64.Instructions; + +namespace ChocolArm64.Decoders +{ + class OpCodeSimdIns64 : OpCodeSimd64 + { + public int SrcIndex { get; private set; } + public int DstIndex { get; private set; } + + public OpCodeSimdIns64(Inst inst, long position, int opCode) : base(inst, position, opCode) + { + int imm4 = (opCode >> 11) & 0xf; + int imm5 = (opCode >> 16) & 0x1f; + + if (imm5 == 0b10000) + { + Emitter = InstEmit.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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