diff options
Diffstat (limited to 'ChocolArm64/Decoder/AOpCodeSimdImm.cs')
| -rw-r--r-- | ChocolArm64/Decoder/AOpCodeSimdImm.cs | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/ChocolArm64/Decoder/AOpCodeSimdImm.cs b/ChocolArm64/Decoder/AOpCodeSimdImm.cs deleted file mode 100644 index e7dfe621..00000000 --- a/ChocolArm64/Decoder/AOpCodeSimdImm.cs +++ /dev/null @@ -1,101 +0,0 @@ -using ChocolArm64.Instruction; -using ChocolArm64.State; - -namespace ChocolArm64.Decoder -{ - class AOpCodeSimdImm : AOpCode, IAOpCodeSimd - { - public int Rd { get; private set; } - public long Imm { get; private set; } - public int Size { get; private set; } - - public AOpCodeSimdImm(AInst Inst, long Position, int OpCode) : base(Inst, Position, OpCode) - { - Rd = OpCode & 0x1f; - - int CMode = (OpCode >> 12) & 0xf; - int Op = (OpCode >> 29) & 0x1; - - int ModeLow = CMode & 1; - int ModeHigh = CMode >> 1; - - long Imm; - - Imm = ((uint)OpCode >> 5) & 0x1f; - Imm |= ((uint)OpCode >> 11) & 0xe0; - - if (ModeHigh == 0b111) - { - Size = ModeLow != 0 ? Op : 3; - - switch (Op | (ModeLow << 1)) - { - case 0: - //64-bits Immediate. - //Transform abcd efgh into abcd efgh abcd efgh ... - Imm = (long)((ulong)Imm * 0x0101010101010101); - break; - - case 1: - //64-bits Immediate. - //Transform abcd efgh into aaaa aaaa bbbb bbbb ... - Imm = (Imm & 0xf0) >> 4 | (Imm & 0x0f) << 4; - Imm = (Imm & 0xcc) >> 2 | (Imm & 0x33) << 2; - Imm = (Imm & 0xaa) >> 1 | (Imm & 0x55) << 1; - - Imm = (long)((ulong)Imm * 0x8040201008040201); - Imm = (long)((ulong)Imm & 0x8080808080808080); - - Imm |= Imm >> 4; - Imm |= Imm >> 2; - Imm |= Imm >> 1; - break; - - case 2: - case 3: - //Floating point Immediate. - Imm = ADecoderHelper.DecodeImm8Float(Imm, Size); - break; - } - } - else if ((ModeHigh & 0b110) == 0b100) - { - //16-bits shifted Immediate. - Size = 1; Imm <<= (ModeHigh & 1) << 3; - } - else if ((ModeHigh & 0b100) == 0b000) - { - //32-bits shifted Immediate. - Size = 2; Imm <<= ModeHigh << 3; - } - else if ((ModeHigh & 0b111) == 0b110) - { - //32-bits shifted Immediate (fill with ones). - Size = 2; Imm = ShlOnes(Imm, 8 << ModeLow); - } - else - { - //8 bits without shift. - Size = 0; - } - - this.Imm = Imm; - - RegisterSize = ((OpCode >> 30) & 1) != 0 - ? ARegisterSize.SIMD128 - : ARegisterSize.SIMD64; - } - - private static long ShlOnes(long Value, int Shift) - { - if (Shift != 0) - { - return Value << Shift | (long)(ulong.MaxValue >> (64 - Shift)); - } - else - { - return Value; - } - } - } -}
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