SRA_FLAG, // V,Flag = sra_flag X -> sra X, 1 + save carry out.
RRX, // V = RRX X, Flag -> srl X, 1 + shift in carry flag.
+ ADDC, // Add with carry
+ ADDE, // Add using carry
+ SUBC, // Sub with carry
+ SUBE, // Sub using carry
+
VMOVRRD, // double to two gprs.
VMOVDRR, // Two gprs to double.