from .insn_rv32m_r_type import * """ MULHSU instruction """ class InsnMulhsu(InsnRV32MRType): def __init__(self, params): super().__init__(params, 0b010) def elaborate(self, platform): m = super().elaborate(platform) if self.params.altops: m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, (self.rvfi_rs1_rdata - self.rvfi_rs2_rdata) ^ 0xea3969edecfbe137, 0)) else: m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, (((Mux(self.rvfi_rs1_rdata[-1], 2 ** self.params.xlen - 1, 0) << self.params.xlen) | self.rvfi_rs1_rdata) * self.rvfi_rs2_rdata) >> self.params.xlen, 0)) return m