From 7ddfa890dc80d8e911188f9311de28dd8f77c5c3 Mon Sep 17 00:00:00 2001 From: Donald Sebastian Leung Date: Fri, 31 Jul 2020 13:44:22 +0800 Subject: [PATCH] Add AUIPC instruction --- insns/insn_auipc.py | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 insns/insn_auipc.py diff --git a/insns/insn_auipc.py b/insns/insn_auipc.py new file mode 100644 index 0000000..07a9f63 --- /dev/null +++ b/insns/insn_auipc.py @@ -0,0 +1,17 @@ +from insn_U import * + +class rvfi_insn_auipc(rvfi_insn_U): + def __init__(self): + super(rvfi_insn_auipc, self).__init__() + def ports(self): + return super(rvfi_insn_auipc, self).ports() + def elaborate(self, platform): + m = super(rvfi_insn_auipc, self).elaborate(platform) + + # AUIPC instruction + m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_opcode == 0b0010111)) + m.d.comb += self.spec_rd_addr.eq(self.insn_rd) + m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_pc_rdata + self.insn_imm, 0)) + m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4) + + return m