public OpCodeSimdImm64(Inst 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 = DecoderHelper.DecodeImm8Float(imm, Size); break; } } else if ((modeHigh & 0b110) == 0b100) { // 16-bits shifted Immediate. Size = 1; imm <<= (modeHigh & 1) << 3; }
public OpCodeSimdFmov64(Inst inst, long position, int opCode) : base(inst, position, opCode) { int imm5 = (opCode >> 5) & 0x1f; int type = (opCode >> 22) & 0x3; if (imm5 != 0b00000 || type > 1) { Emitter = InstEmit.Und; return; } Size = type; long imm; Rd = (opCode >> 0) & 0x1f; imm = (opCode >> 13) & 0xff; Imm = DecoderHelper.DecodeImm8Float(imm, type); }