Support setting ISA/subsets with --isa flag

[riscv-isa-sim.git] / riscv / insns / mulh.h

require_extension('M');
if (xlen == 64)
  WRITE_RD(mulh(RS1, RS2));
else
  WRITE_RD(sext32((sext32(RS1) * sext32(RS2)) >> 32));