From 05266b847458dc66e92291b7fa9cf42b80c4148c Mon Sep 17 00:00:00 2001
From: Donald Sebastian Leung
Date: Fri, 31 Jul 2020 13:40:40 +0800
Subject: [PATCH] Add LUI instruction
---
insns/insn_lui.py | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
create mode 100644 insns/insn_lui.py
diff --git a/insns/insn_lui.py b/insns/insn_lui.py
new file mode 100644
index 0000000..42aa764
--- /dev/null
+++ b/insns/insn_lui.py
@@ -0,0 +1,17 @@
+from insn_U import *
+
+class rvfi_insn_lui(rvfi_insn_U):
+ def __init__(self):
+ super(rvfi_insn_lui, self).__init__()
+ def ports(self):
+ return super(rvfi_insn_lui, self).ports()
+ def elaborate(self, platform):
+ m = super(rvfi_insn_lui, self).elaborate(platform)
+
+ # LUI instruction
+ m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_opcode == 0b0110111))
+ 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.insn_imm, 0))
+ m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
+
+ return m