diff options
Diffstat (limited to 'ChocolArm64/Decoder/AOpCodeSimdMemMs.cs')
| -rw-r--r-- | ChocolArm64/Decoder/AOpCodeSimdMemMs.cs | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/ChocolArm64/Decoder/AOpCodeSimdMemMs.cs b/ChocolArm64/Decoder/AOpCodeSimdMemMs.cs new file mode 100644 index 00000000..9ea979ba --- /dev/null +++ b/ChocolArm64/Decoder/AOpCodeSimdMemMs.cs @@ -0,0 +1,49 @@ +using ChocolArm64.Instruction; +using ChocolArm64.State; + +namespace ChocolArm64.Decoder +{ + class AOpCodeSimdMemMs : AOpCodeMemReg, IAOpCodeSimd + { + public int Reps { get; private set; } + public int SElems { get; private set; } + public int Elems { get; private set; } + public bool WBack { get; private set; } + + public AOpCodeSimdMemMs(AInst Inst, long Position, int OpCode) : base(Inst, Position, OpCode) + { + switch ((OpCode >> 12) & 0xf) + { + case 0b0000: Reps = 1; SElems = 4; break; + case 0b0010: Reps = 4; SElems = 1; break; + case 0b0100: Reps = 1; SElems = 3; break; + case 0b0110: Reps = 3; SElems = 1; break; + case 0b0111: Reps = 1; SElems = 1; break; + case 0b1000: Reps = 1; SElems = 2; break; + case 0b1010: Reps = 2; SElems = 1; break; + + default: Inst = AInst.Undefined; return; + } + + Size = (OpCode >> 10) & 0x3; + WBack = ((OpCode >> 23) & 0x1) != 0; + + bool Q = ((OpCode >> 30) & 1) != 0; + + if (!Q && Size == 3 && SElems != 1) + { + Inst = AInst.Undefined; + + return; + } + + Extend64 = false; + + RegisterSize = Q + ? ARegisterSize.SIMD128 + : ARegisterSize.SIMD64; + + Elems = (GetBitsCount() >> 3) >> Size; + } + } +}
\ No newline at end of file |