Add ANDI instruction

2020-08-10 17:35:43 +08:00 · 2020-08-10 17:35:43 +08:00 · 31753e3679
parent c258d541af
commit 31753e3679
1 changed files with 15 additions and 0 deletions
--- a/insns/InsnAndi.py
+++ b/insns/InsnAndi.py
@ -0,0 +1,15 @@
+from InsnRV32IITypeArith import *
+
+"""
+ANDI instruction
+"""
+
+class InsnAndi(InsnRV32IITypeArith):
+    def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED):
+        super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED, 0b111)
+    def elaborate(self, platform):
+        m = super().elaborate(platform)
+
+        m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata & self.insn_imm, 0))
+
+        return m