RTL code refactoring

hw/rtl/interfaces/VX_inst_exec_wb_if.v

@@ -0,0 +1,18 @@
+
+`ifndef VX_EXEC_UNIT_WB_INST_INTER
+`define VX_EXEC_UNIT_WB_INST_INTER
+
+`include "../VX_define.vh"
+
+interface VX_inst_exec_wb_if ();
+
+	wire [`NUM_THREADS-1:0][31:0]  	alu_result; 
+	wire [31:0]            			exec_wb_pc;
+	wire [4:0]      		  		rd;
+	wire [1:0]      		  		wb;
+	wire [`NUM_THREADS-1:0]        	wb_valid;
+	wire [`NW_BITS-1:0]       		wb_warp_num;
+
+endinterface
+
+`endif