fix: fix data dep in csrwr

HITSZ-NSCSCC22 · Jun 10, 2022 · 1290066 · 1290066
1 parent cd98145
commit 1290066
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/vsrc/pipeline/3_execution/ex.sv b/src/vsrc/pipeline/3_execution/ex.sv
@@ -105,7 +105,7 @@ module ex (
     //写入csr的数据，对csrxchg指令进行掩码处理
     assign ex_o.csr_signal.we = csr_signal_i.we;
     assign ex_o.csr_signal.addr = csr_signal_i.addr;
-    assign ex_o.csr_signal.data = (aluop_i ==`EXE_CSRXCHG_OP) ? ((reg1_i & reg2_i) | (~reg2_i & dispatch_i.csr_reg_data)) : csr_signal_i.data;
+    assign ex_o.csr_signal.data = (aluop_i ==`EXE_CSRXCHG_OP) ? ((reg1_i & reg2_i) | (~reg2_i & dispatch_i.csr_reg_data)) : oprand1;
 
     logic [`RegBus] csr_reg_data;
     assign csr_reg_data = aluop_i == `EXE_RDCNTID_OP ? tid :