floating point support fixes

hw/rtl/interfaces/VX_gpr_read_if.v

@@ -0,0 +1,29 @@
+`ifndef VX_GPR_READ_IF
+`define VX_GPR_READ_IF
+
+`include "VX_define.vh"
+
+interface VX_gpr_read_if ();  
+
+    wire                    valid;
+
+    wire [`NW_BITS-1:0]     warp_num;
+    
+    wire [`NR_BITS-1:0]     rs1;
+    wire [`NR_BITS-1:0]     rs2;  
+    wire [`NR_BITS-1:0]     rs3;
+    
+    wire                    use_rs3;
+    
+    wire                    rs1_is_fp;
+    wire                    rs2_is_fp;    
+
+    wire [`NUM_THREADS-1:0][31:0] rs1_data;
+    wire [`NUM_THREADS-1:0][31:0] rs2_data;
+    wire [`NUM_THREADS-1:0][31:0] rs3_data;
+
+    wire                    ready;
+
+endinterface
+
+`endif