21 lines
834 B
Python
21 lines
834 B
Python
from insn_I import *
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class rvfi_insn_addi(rvfi_insn_I):
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def __init__(self):
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super(rvfi_insn_addi, self).__init__()
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def ports(self):
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return super(rvfi_insn_addi, self).ports()
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def elaborate(self, platform):
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m = super(rvfi_insn_addi, self).elaborate(platform)
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# ADDI instruction
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result = Signal(32)
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m.d.comb += result.eq(self.rvfi_rs1_rdata + self.insn_imm)
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m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b000) & (self.insn_opcode == 0b0010011))
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m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
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m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
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m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
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m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
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return m
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