Added coverage tests to regression coverage

sim/regression-wally

@@ -130,8 +130,7 @@ for test in ahbTests:
 tests64gc = ["arch64f", "arch64d", "arch64i", "arch64priv", "arch64c",  "arch64m", "arch64zi", "wally64a", "wally64periph", "wally64priv"] 
 if (coverage):  # delete all but 64gc tests when running coverage
     configs = []
-    tests64gc = ["arch64f", "arch64d", "arch64i", "arch64priv", "arch64c",  "arch64m", "arch64zi", "wally64a", "wally64periph", "wally64priv", "imperas64f", "imperas64d", "imperas64c", "imperas64i"] 
-#    tests64gc.append(["imperas64f", "imperas64d", "imperas64c", "imperas64i"])
+    tests64gc = ["coverage64gc", "arch64f", "arch64d", "arch64i", "arch64priv", "arch64c",  "arch64m", "arch64zi", "wally64a", "wally64periph", "wally64priv", "imperas64f", "imperas64d", "imperas64c", "imperas64i"] 
     coverStr = '-coverage'
 else:
    coverStr = ''

testbench/testbench.sv

@@ -106,6 +106,7 @@ logic [3:0] dummy;
         "coremark":                       tests = coremark;
         "fpga":                           tests = fpga;
         "ahb" :                           tests = ahb;
+        "coverage64gc" :                  tests = coverage64gc;
       endcase 
     end else begin // RV32
       case (TEST)
@@ -299,20 +300,22 @@ logic [3:0] dummy;
           testadrNoBase = (begin_signature_addr - `UNCORE_RAM_BASE)/(`XLEN/8);
           #600; // give time for instructions in pipeline to finish
           if (TEST == "embench") begin
-			// Writes contents of begin_signature to .sim.output file
-			// this contains instret and cycles for start and end of test run, used by embench python speed script to calculate embench speed score
-			// also begin_signature contains the results of the self checking mechanism, which will be read by the python script for error checking
-			$display("Embench Benchmark: %s is done.", tests[test]);
-			if (riscofTest) outputfile = {pathname, tests[test], "/ref/ref.sim.output"};
-			else outputfile = {pathname, tests[test], ".sim.output"};
-			outputFilePointer = $fopen(outputfile);
-			i = 0;
-			while ($unsigned(i) < $unsigned(5'd5)) begin
-              $fdisplayh(outputFilePointer, DCacheFlushFSM.ShadowRAM[testadr+i]);
-              i = i + 1;
-			end
-			$fclose(outputFilePointer);
-			$display("Embench Benchmark: created output file: %s", outputfile);
+            // Writes contents of begin_signature to .sim.output file
+            // this contains instret and cycles for start and end of test run, used by embench python speed script to calculate embench speed score
+            // also begin_signature contains the results of the self checking mechanism, which will be read by the python script for error checking
+            $display("Embench Benchmark: %s is done.", tests[test]);
+            if (riscofTest) outputfile = {pathname, tests[test], "/ref/ref.sim.output"};
+            else outputfile = {pathname, tests[test], ".sim.output"};
+            outputFilePointer = $fopen(outputfile);
+            i = 0;
+            while ($unsigned(i) < $unsigned(5'd5)) begin
+                    $fdisplayh(outputFilePointer, DCacheFlushFSM.ShadowRAM[testadr+i]);
+                    i = i + 1;
+            end
+            $fclose(outputFilePointer);
+            $display("Embench Benchmark: created output file: %s", outputfile);
+          end else if (TEST == "coverage64gc") begin
+            $display("Coverage tests don't get checked");
           end else begin 
 			// for tests with no self checking mechanism, read .signature.output file and compare to check for errors
 			// clear signature to prevent contamination from previous tests

testbench/tests.vh

@@ -27,22 +27,26 @@
 `define IMPERASTEST   "0"
 `define RISCVARCHTEST "1"
 `define WALLYTEST "2"
-`define MYIMPERASTEST   "3"
-`define COREMARK "4"
-`define EMBENCH "5"
-`define CUSTOM "6"
-// *** remove MYIMPERASTEST cases when ported 
+`define COREMARK "3"
+`define EMBENCH "4"
+`define CUSTOM "5"
+`define COVERAGE "6"
 
 string tvpaths[] = '{
     "$RISCV/imperas-riscv-tests/work/",
     "../tests/riscof/work/riscv-arch-test/",
     "../tests/riscof/work/wally-riscv-arch-test/",
-    "../tests/imperas-riscv-tests/work/",
     "../benchmarks/coremark/work/",
     "../addins/embench-iot/",
-    "../tests/custom/work/"
+    "../tests/custom/work/",
+    "../tests/coverage/"
     };
 
+  string coverage64gc[] = '{
+    `COVERAGE,
+    "badinstr"
+  };
+
   string coremark[] = '{
     `COREMARK,
     "coremark.bare.riscv"

tests/coverage/Makefile

@@ -16,11 +16,12 @@ all: $(OBJECTS)
 %.elf.objdump: %.elf
 
 %.elf: $(SRCDIR)/%.$(SEXT) WALLY-init-lib.h Makefile
+	# Change many things if bit width isn't 64
 	echo $@
 	riscv64-unknown-elf-gcc -g -o $@ -march=rv64gc -mabi=lp64 -mcmodel=medany \
 	    -nostartfiles -T../../examples/link/link.ld $<
 	riscv64-unknown-elf-objdump -D $@ > $@.objdump
-	riscv64-unknown-elf-elf2hex --bit-width $(if $(findstring rv64,$*),64,32) --input $@ --output $@.memfile
+	riscv64-unknown-elf-elf2hex --bit-width 64 --input $@ --output $@.memfile
 	extractFunctionRadix.sh $@.objdump
     
 sim: %.elf
@@ -29,7 +30,7 @@ sim: %.elf
 	echo "Signature matches! Success!"
 
 clean:
-	rm -f *.elf *.objdump *.signature.output
+	rm -f *.elf *.objdump *.signature.output *.addr *.lab *.memfile