feat: add scalar fexp support

2026-07-02 07:24:59 +00:00
parent 97a1eff701
commit 9251ba0a24
12 changed files with 327 additions and 14 deletions
--- a/hw/rtl/core/VX_decode.sv
+++ b/hw/rtl/core/VX_decode.sv
@@ -538,6 +538,18 @@ module VX_decode  #(
                            endcase
                        end
                    end
+                `ifdef EXT_F_ENABLE
+                    3'h2: begin
+                        if (func7 == 7'h30 && rs2 == 5'd0) begin
+                            ex_type = `EX_FPU;
+                            op_type = `INST_OP_BITS'(`INST_FPU_MISC);
+                            op_mod  = `INST_MOD_BITS'(8); // FEXP.S
+                            use_rd  = 1;
+                            `USED_FREG (rd);
+                            `USED_FREG (rs1);
+                        end
+                    end
+                `endif
                    default:;
                endcase
            end