Add REMU instruction

This commit is contained in:
Donald Sebastian Leung 2020-08-26 17:15:27 +08:00
parent fb91df7bb8
commit 46e6ca3f70
1 changed files with 18 additions and 0 deletions

18
rvfi/insns/insn_remu.py Normal file
View File

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from .insn_rv32m_r_type import *
"""
REMU instruction
"""
class InsnRemu(InsnRV32MRType):
def __init__(self, params):
super().__init__(params, 0b111)
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) ^ 0xbc4402413138d0e1, 0))
else:
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, Mux(self.rvfi_rs2_rdata == 0, self.rvfi_rs1_rdata, self.rvfi_rs1_rdata % self.rvfi_rs2_rdata), 0))
return m