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