23 lines
983 B
Python
23 lines
983 B
Python
from insn_SB import *
|
|
|
|
class rvfi_insn_bne(rvfi_insn_SB):
|
|
def __init__(self):
|
|
super(rvfi_insn_bne, self).__init__()
|
|
def ports(self):
|
|
return super(rvfi_insn_bne, self).ports()
|
|
def elaborate(self, platform):
|
|
m = super(rvfi_insn_bne, self).elaborate(platform)
|
|
|
|
# BNE instruction
|
|
cond = Signal(1)
|
|
m.d.comb += cond.eq(self.rvfi_rs1_rdata != self.rvfi_rs2_rdata)
|
|
next_pc = Signal(32)
|
|
m.d.comb += next_pc.eq(Mux(cond, self.rvfi_pc_rdata + self.insn_imm, self.rvfi_pc_rdata + 4))
|
|
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b001) & (self.insn_opcode == 0b1100011))
|
|
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
|
|
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
|
|
m.d.comb += self.spec_pc_wdata.eq(next_pc)
|
|
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)
|
|
|
|
return m
|