Merge pull request #63 from davidharrishmc/dev

Cleanup

.gitignore

@@ -89,6 +89,7 @@ tests/custom/*/*/*.elf
 tests/custom/*/*/*.map
 tests/custom/*/*/*.memfile
 tests/custom/crt0/*.a
+tests/custom/*/*.elf*
 sim/sd_model.log
 fpga/src/sdc/*
 fpga/src/sdc.tar.gz

benchmarks/coremark/Makefile

@@ -22,7 +22,7 @@ PORT_CFLAGS = -g -mabi=$(ABI) -march=$(ARCH) -static -falign-functions=16 \
 all: $(work_dir)/coremark.bare.riscv.elf.memfile
 
 run:
-	(cd ../../sim && (time vsim -c -do "do wally-pipelined-batch.do rv$(XLEN)gc coremark" 2>&1 | tee $(work_dir)/coremark.sim.log))
+	(cd ../../sim && (time vsim -c -do "do wally-batch.do rv$(XLEN)gc coremark" 2>&1 | tee $(work_dir)/coremark.sim.log))
 	cd ../benchmarks/coremark/
 #	KMG: added post processing script to give out branch miss proportion along with other stats to the coremark test
 	python3 coremark-postprocess.py

benchmarks/embench/Makefile

@@ -34,7 +34,7 @@ sim: modelsim_build_memfile modelsim_run speed
 
 # launches modelsim to simulate tests on wally
 modelsim_run:
-	(cd ../../sim/ && vsim -c -do "do wally-pipelined-batch.do rv32gc embench")
+	(cd ../../sim/ && vsim -c -do "do wally-batch.do rv32gc embench")
 	cd ../../benchmarks/embench/
 
 # builds the objdump based on the compiled c elf files

config/shared/wally-shared.vh

@@ -135,9 +135,6 @@
 `define DIVBLEN     ($clog2(`DIVb+1)-1)
 `define DIVa        (`DIVb+1-`XLEN)             // used for idiv on fpu
 
-// Memory synthesis configuration
-`define USE_SRAM 0
-
 // Disable spurious Verilator warnings
 
 /* verilator lint_off STMTDLY */

setup.imperas.sh

@@ -36,7 +36,7 @@ pushd sim
     IMPERAS_TOOLS=$(pwd)/imperas.ic \
         OTHERFLAGS="+TRACE2LOG_ENABLE=1 VERBOSE=1" \
         TESTDIR=${WALLY}/external/ImperasDV-HMC/tests/riscof/work/riscv-arch-test/rv64i_m/F/src/fadd_b1-01.S  \
-        vsim -c -do "do wally-pipelined-imperas.do rv64gc"
+        vsim -c -do "do wally-imperas.do rv64gc"
 popd
 
 # notes
@@ -50,7 +50,7 @@ popd
 IMPERAS_TOOLS=$(pwd)/imperas.ic \
 OTHERFLAGS="+TRACE2LOG_ENABLE=1 VERBOSE=1" \
 TESTDIR=../../tests/riscof_lee/work/riscv-arch-test/rv64i_m/F/src/fadd_b1-01.S  \
-vsim -c -do "do wally-pipelined-imperas.do rv64gc"
+vsim -c -do "do wally-imperas.do rv64gc"
 
 
 # getting library issue.

sim/buildrootBugFinder.py

@@ -22,7 +22,7 @@ def main():
             break
         checkpoint = checkpointList[0]
         logFile = logDir+"checkpoint"+str(checkpoint)+".log"
-        runCommand="{\nvsim -c <<!\ndo wally-pipelined-batch.do buildroot buildroot /opt/riscv 0 "+str(checkpoint+1)+" "+str(checkpoint)+"\n!\n} | tee "+logFile 
+        runCommand="{\nvsim -c <<!\ndo wally-batch.do buildroot buildroot /opt/riscv 0 "+str(checkpoint+1)+" "+str(checkpoint)+"\n!\n} | tee "+logFile 
         print(runCommand)
         os.system(runCommand)
         try:

sim/regression-wally

@@ -50,18 +50,18 @@ def getBuildrootTC(boot):
     MAX_EXPECTED = 246000000 # *** TODO: replace this with a search for the login prompt.
     if boot:
         name="buildrootboot"
-        BRcmd="vsim > {} -c <<!\ndo wally-pipelined.do buildroot buildroot-no-trace $RISCV 0 1 0\n!"
+        BRcmd="vsim > {} -c <<!\ndo wally.do buildroot buildroot-no-trace $RISCV 0 1 0\n!"
         BRgrepstr="WallyHostname login:"
     else:
         name="buildroot"
-        BRcmd="vsim > {} -c <<!\ndo wally-pipelined-batch.do buildroot buildroot $RISCV "+str(INSTR_LIMIT)+" 1 0\n!"
+        BRcmd="vsim > {} -c <<!\ndo wally-batch.do buildroot buildroot $RISCV "+str(INSTR_LIMIT)+" 1 0\n!"
         BRgrepstr=str(INSTR_LIMIT)+" instructions"
     return  TestCase(name,variant="rv64gc",cmd=BRcmd,grepstr=BRgrepstr)
 
 tc = TestCase(
       name="buildroot-checkpoint",
       variant="rv64gc",
-      cmd="vsim > {} -c <<!\ndo wally-pipelined-batch.do buildroot buildroot-checkpoint $RISCV 400100000 400000001 400000000\n!", # *** will this work with rv64gc rather than buildroot config?
+      cmd="vsim > {} -c <<!\ndo wally-batch.do buildroot buildroot-checkpoint $RISCV 400100000 400000001 400000000\n!", # *** will this work with rv64gc rather than buildroot config?
       grepstr="400100000 instructions")
 configs.append(tc)
 
@@ -71,7 +71,7 @@ for test in tests64gc:
   tc = TestCase(
         name=test,
         variant="rv64gc",
-        cmd="vsim > {} -c <<!\ndo wally-pipelined-batch.do rv64gc "+test+"\n!",
+        cmd="vsim > {} -c <<!\ndo wally-batch.do rv64gc "+test+"\n!",
         grepstr="All tests ran without failures")
   configs.append(tc)
 
@@ -80,7 +80,7 @@ for test in tests64i:
   tc = TestCase(
         name=test,
         variant="rv64i",
-        cmd="vsim > {} -c <<!\ndo wally-pipelined-batch.do rv64i "+test+"\n!",
+        cmd="vsim > {} -c <<!\ndo wally-batch.do rv64i "+test+"\n!",
         grepstr="All tests ran without failures")
   configs.append(tc)
 
@@ -90,7 +90,7 @@ for test in tests32gc:
   tc = TestCase(
         name=test,
         variant="rv32gc",
-        cmd="vsim > {} -c <<!\ndo wally-pipelined-batch.do rv32gc "+test+"\n!",
+        cmd="vsim > {} -c <<!\ndo wally-batch.do rv32gc "+test+"\n!",
         grepstr="All tests ran without failures")
   configs.append(tc)
 
@@ -100,7 +100,7 @@ for test in tests32imc:
   tc = TestCase(
         name=test,
         variant="rv32imc",
-        cmd="vsim > {} -c <<!\ndo wally-pipelined-batch.do rv32imc "+test+"\n!",
+        cmd="vsim > {} -c <<!\ndo wally-batch.do rv32imc "+test+"\n!",
         grepstr="All tests ran without failures")
   configs.append(tc)
 
@@ -109,7 +109,7 @@ for test in tests32i:
   tc = TestCase(
         name=test,
         variant="rv32i",
-        cmd="vsim > {} -c <<!\ndo wally-pipelined-batch.do rv32i "+test+"\n!",
+        cmd="vsim > {} -c <<!\ndo wally-batch.do rv32i "+test+"\n!",
         grepstr="All tests ran without failures")
   configs.append(tc)
 
@@ -119,7 +119,7 @@ for test in tests32e:
   tc = TestCase(
         name=test,
         variant="rv32e",
-        cmd="vsim > {} -c <<!\ndo wally-pipelined-batch.do rv32e "+test+"\n!",
+        cmd="vsim > {} -c <<!\ndo wally-batch.do rv32e "+test+"\n!",
         grepstr="All tests ran without failures")
   configs.append(tc)
 
@@ -128,7 +128,7 @@ for test in ahbTests:
   tc = TestCase(
         name="ram_latency_" + test[0] + "_burst_en_" + test[1],
         variant="ahb",
-        cmd="vsim > {} -c <<!\ndo wally-pipelined-batch.do rv64gc ahb "+test[0]+" "+test[1]+"\n!",
+        cmd="vsim > {} -c <<!\ndo wally-batch.do rv64gc ahb "+test[0]+" "+test[1]+"\n!",
         grepstr="All tests ran without failures")
   configs.append(tc)
   

sim/run-imperasdv-tests.bash

@@ -17,6 +17,6 @@ for t in $ALL; do
     echo "Running test ${TESTDIR} -> ${OUTDIR} :: ${OUTLOG}"
 
     mkdir -p ${OUTDIR}
-    vsim -c -do "do wally-pipelined-imperas.do rv64gc"
+    vsim -c -do "do wally-imperas.do rv64gc"
     mv transcript ${OUTLOG}
 done

sim/sim-buildroot

@@ -30,4 +30,4 @@ echo "INSTR_LIMIT  = ${INSTR_LIMIT}"
 echo "INSTR_WAVEON = ${INSTR_WAVEON}"
 echo "CHECKPOINT   = ${CHECKPOINT}"
 
-vsim -do "do ./wally-pipelined.do buildroot buildroot $RISCV $INSTR_LIMIT $INSTR_WAVEON $CHECKPOINT"
+vsim -do "do ./wally.do buildroot buildroot $RISCV $INSTR_LIMIT $INSTR_WAVEON $CHECKPOINT"

sim/sim-buildroot-batch

@@ -32,5 +32,5 @@ echo "CHECKPOINT   = ${CHECKPOINT}"
 
 # *** change config from buildroot to rv64gc
 vsim -c <<!
-do wally-pipelined-batch.do buildroot buildroot-no-trace $RISCV $INSTR_LIMIT $INSTR_WAVEON $CHECKPOINT
+do wally-batch.do buildroot buildroot-no-trace $RISCV $INSTR_LIMIT $INSTR_WAVEON $CHECKPOINT
 !

sim/sim-imperas

@@ -29,4 +29,4 @@
 IMPERAS_TOOLS=$(pwd)/imperas.ic \
 OTHERFLAGS="+TRACE2LOG_ENABLE=1 VERBOSE=1" \
 TESTDIR=${WALLY}/external/ImperasDV-HMC/tests/riscof/work/riscv-arch-test/rv64i_m/F/src/fadd_b1-01.S  \
-vsim -c -do "do wally-pipelined-imperas.do rv64gc"
+vsim -c -do "do wally-imperas.do rv64gc"

sim/sim-wally

@@ -1,2 +1,2 @@
-vsim -do "do wally-pipelined.do rv64gc arch64d"
+vsim -do "do wally.do rv64gc arch64d"
 

sim/sim-wally-batch

@@ -1 +1 @@
-vsim -c -do "do wally-pipelined-batch.do rv32gc wally32priv"
+vsim -c -do "do wally-batch.do rv32gc wally32priv"

sim/testfloat.do

@@ -1,4 +1,4 @@
-# wally-pipelined.do 
+# testfloat.do 
 #
 # Modification by Oklahoma State University & Harvey Mudd College
 # Use with Testbench 
@@ -7,14 +7,7 @@
 #
 # Takes 1:10 to run RV64IC tests using gui
 
-# run with vsim -do "do wally-pipelined.do rv64ic riscvarchtest-64m"
-
-# Use this wally-pipelined.do file to run this example.
-# Either bring up ModelSim and type the following at the "ModelSim>" prompt:
-#     do wally-pipelined.do
-# or, to run from a shell, type the following at the shell prompt:
-#     vsim -do wally-pipelined.do -c
-# (omit the "-c" to see the GUI while running from the shell)
+# run with vsim -do "do wally.do rv64ic riscvarchtest-64m"
 
 onbreak {resume}
 

sim/wally-batch.do

@@ -1,4 +1,5 @@
-# wally-pipelined-batch.do 
+# wally-batch.do 
+# SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
 #
 # Modification by Oklahoma State University & Harvey Mudd College
 # Use with Testbench 
@@ -7,14 +8,14 @@
 #
 # Takes 1:10 to run RV64IC tests using gui
 
-# Usage: do wally-pipelined-batch.do <config> <testcases>
-# Example: do wally-pipelined-batch.do rv32imc imperas-32i
+# Usage: do wally-batch.do <config> <testcases>
+# Example: do wally-batch.do rv32imc imperas-32i
 
-# Use this wally-pipelined-batch.do file to run this example.
+# Use this wally-batch.do file to run this example.
 # Either bring up ModelSim and type the following at the "ModelSim>" prompt:
-#     do wally-pipelined-batch.do
+#     do wally-batch.do
 # or, to run from a shell, type the following at the shell prompt:
-#     vsim -do wally-pipelined-batch.do -c
+#     vsim -do wally-batch.do -c
 # (omit the "-c" to see the GUI while running from the shell)
 
 onbreak {resume}
@@ -91,9 +92,9 @@ if {$2 eq "buildroot" || $2 eq "buildroot-checkpoint"} {
     # power off -r /dut/core/*
 } 
 
-#coverage report -file wally-pipelined-coverage.txt
+#coverage report -file wally-coverage.txt
 # These aren't doing anything helpful
 #coverage report -memory 
-#profile report -calltree -file wally-pipelined-calltree.rpt -cutoff 2
+#profile report -calltree -file wally-calltree.rpt -cutoff 2
 #power report -all -bsaif power.saif
 quit

sim/wally-imperas-no-idv.do

@@ -1,4 +1,5 @@
-# wally-pipelined.do 
+# wally.do 
+# SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
 #
 # Modification by Oklahoma State University & Harvey Mudd College
 # Use with Testbench 
@@ -7,15 +8,6 @@
 #
 # Takes 1:10 to run RV64IC tests using gui
 
-# run with vsim -do "do wally-pipelined.do rv64ic riscvarchtest-64m"
-
-# Use this wally-pipelined.do file to run this example.
-# Either bring up ModelSim and type the following at the "ModelSim>" prompt:
-#     do wally-pipelined.do
-# or, to run from a shell, type the following at the shell prompt:
-#     vsim -do wally-pipelined.do -c
-# (omit the "-c" to see the GUI while running from the shell)
-
 onbreak {resume}
 
 # create library

sim/wally-imperas.do

@@ -1,4 +1,5 @@
-# wally-pipelined.do 
+# wally.do 
+# SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
 #
 # Modification by Oklahoma State University & Harvey Mudd College
 # Use with Testbench 
@@ -7,15 +8,6 @@
 #
 # Takes 1:10 to run RV64IC tests using gui
 
-# run with vsim -do "do wally-pipelined.do rv64ic riscvarchtest-64m"
-
-# Use this wally-pipelined.do file to run this example.
-# Either bring up ModelSim and type the following at the "ModelSim>" prompt:
-#     do wally-pipelined.do
-# or, to run from a shell, type the following at the shell prompt:
-#     vsim -do wally-pipelined.do -c
-# (omit the "-c" to see the GUI while running from the shell)
-
 onbreak {resume}
 
 # create library

sim/wally.do

@@ -1,4 +1,5 @@
-# wally-pipelined.do 
+# wally.do 
+# SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
 #
 # Modification by Oklahoma State University & Harvey Mudd College
 # Use with Testbench 
@@ -11,9 +12,9 @@
 
 # Use this wally-pipelined.do file to run this example.
 # Either bring up ModelSim and type the following at the "ModelSim>" prompt:
-#     do wally-pipelined.do
+#     do wally.do
 # or, to run from a shell, type the following at the shell prompt:
-#     vsim -do wally-pipelined.do -c
+#     vsim -do wally.do -c
 # (omit the "-c" to see the GUI while running from the shell)
 
 onbreak {resume}

src/ebu/buscachefsm.sv

@@ -116,7 +116,7 @@ module buscachefsm #(
   assign CaptureEn = (CurrState == DATA_PHASE & BusRW[1]) | (CurrState == CACHE_FETCH & HREADY);
   assign CacheAccess = CurrState == CACHE_FETCH | CurrState == CACHE_WRITEBACK;
 
-  assign BusStall = (CurrState == ADR_PHASE & (|BusRW | |CacheBusRW)) |
+  assign BusStall = (CurrState == ADR_PHASE & ((|BusRW) | (|CacheBusRW))) |
 					//(CurrState == DATA_PHASE & ~BusRW[0]) |  // *** replace the next line with this.  Fails uart test but i think it's a test problem not a hardware problem.
 					(CurrState == DATA_PHASE) | 
           (CurrState == CACHE_FETCH & ~HREADY) |
@@ -124,7 +124,7 @@ module buscachefsm #(
   assign BusCommitted = CurrState != ADR_PHASE;
 
   // AHB bus interface
-  assign HTRANS = (CurrState == ADR_PHASE & HREADY & (|BusRW | |CacheBusRW) & ~Flush) |
+  assign HTRANS = (CurrState == ADR_PHASE & HREADY & ((|BusRW) | (|CacheBusRW)) & ~Flush) |
                   (CacheAccess & FinalBeatCount & |CacheBusRW & HREADY) ? AHB_NONSEQ : // if we have a pipelined request
                   (CacheAccess & |BeatCount) ? (`BURST_EN ? AHB_SEQ : AHB_NONSEQ) : AHB_IDLE;
 

src/fpu/unpackinput.sv

@@ -56,7 +56,6 @@ module unpackinput (
       assign ExpMax = &In[`FLEN-2:`NF];  // is the exponent all 1's
   
   end else if (`FPSIZES == 2) begin   // if there are 2 floating point formats supported
-      //***need better names for these constants
       // largest format | smaller format
       //----------------------------------
       //      `FLEN     |     `LEN1       length of floating point number
@@ -104,7 +103,6 @@ module unpackinput (
 
   end else if (`FPSIZES == 3) begin       // three floating point precsions supported
 
-      //***need better names for these constants
       // largest format | larger format  | smallest format
       //---------------------------------------------------
       //      `FLEN     |     `LEN1      |    `LEN2       length of floating point number
@@ -196,7 +194,7 @@ module unpackinput (
       // Check NaN boxing
       always_comb
           case (Fmt)
-              2'b11:  BadNaNBox = 0;
+              2'b11: BadNaNBox = 0;
               2'b01: BadNaNBox = ~&In[`Q_LEN-1:`D_LEN];
               2'b00: BadNaNBox = ~&In[`Q_LEN-1:`S_LEN];
               2'b10: BadNaNBox = ~&In[`Q_LEN-1:`H_LEN];

synthDC/Makefile

@@ -69,7 +69,7 @@ endif
 
 # if USESRAM = 1, set that in the config file, otherwise reduce sizes
 ifeq ($(USESRAM), 1)
-	sed -i 's/USE_SRAM.*/USE_SRAM 1/g' $(CONFIGDIR)/wally-shared.vh
+	sed -i 's/USE_SRAM.*/USE_SRAM 1/g' $(CONFIGDIR)/wally-config.vh
 else
 	sed -i 's/WAYSIZEINBYTES.*/WAYSIZEINBYTES 512/g' $(CONFIGDIR)/wally-config.vh
 	sed -i 's/NUMWAYS.*/NUMWAYS 1/g' $(CONFIGDIR)/wally-config.vh

testbench/testbench-fp.sv

@@ -9,22 +9,18 @@
 // 
 // Copyright (C) 2021 Harvey Mudd College & Oklahoma State University
 //
-// MIT LICENSE
-// Permission is hereby granted, free of charge, to any person obtaining a copy of this 
-// software and associated documentation files (the "Software"), to deal in the Software 
-// without restriction, including without limitation the rights to use, copy, modify, merge, 
-// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons 
-// to whom the Software is furnished to do so, subject to the following conditions:
+// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
 //
-//   The above copyright notice and this permission notice shall be included in all copies or 
-//   substantial portions of the Software.
+// Licensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file 
+// except in compliance with the License, or, at your option, the Apache License version 2.0. You 
+// may obtain a copy of the License at
 //
-//   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
-//   INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 
-//   PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 
-//   BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
-//   TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE 
-//   OR OTHER DEALINGS IN THE SOFTWARE.
+// https://solderpad.org/licenses/SHL-2.1/
+//
+// Unless required by applicable law or agreed to in writing, any work distributed under the 
+// License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
+// either express or implied. See the License for the specific language governing permissions 
+// and limitations under the License.
 ////////////////////////////////////////////////////////////////////////////////////////////////
 `include "wally-config.vh"
 `include "tests-fp.vh"

testbench/testbench-linux.sv

@@ -10,20 +10,19 @@
 // 
 // Copyright (C) 2021 Harvey Mudd College & Oklahoma State University
 //
-// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
-// files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, 
-// modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software 
-// is furnished to do so, subject to the following conditions:
+// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
 //
-// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+// Licensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file 
+// except in compliance with the License, or, at your option, the Apache License version 2.0. You 
+// may obtain a copy of the License at
 //
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 
-// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 
-// BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT 
-// OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-// When letting Wally go for it, let wally make own interrupts
-///////////////////////////////////////////
+// https://solderpad.org/licenses/SHL-2.1/
+//
+// Unless required by applicable law or agreed to in writing, any work distributed under the 
+// License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
+// either express or implied. See the License for the specific language governing permissions 
+// and limitations under the License.
+////////////////////////////////////////////////////////////////////////////////////////////////
 
 `include "wally-config.vh"
 

testbench/testbench.sv

@@ -11,22 +11,18 @@
 // 
 // Copyright (C) 2021 Harvey Mudd College & Oklahoma State University
 //
-// MIT LICENSE
-// Permission is hereby granted, free of charge, to any person obtaining a copy of this 
-// software and associated documentation files (the "Software"), to deal in the Software 
-// without restriction, including without limitation the rights to use, copy, modify, merge, 
-// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons 
-// to whom the Software is furnished to do so, subject to the following conditions:
+// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
 //
-//   The above copyright notice and this permission notice shall be included in all copies or 
-//   substantial portions of the Software.
+// Licensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file 
+// except in compliance with the License, or, at your option, the Apache License version 2.0. You 
+// may obtain a copy of the License at
 //
-//   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
-//   INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 
-//   PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 
-//   BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
-//   TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE 
-//   OR OTHER DEALINGS IN THE SOFTWARE.
+// https://solderpad.org/licenses/SHL-2.1/
+//
+// Unless required by applicable law or agreed to in writing, any work distributed under the 
+// License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
+// either express or implied. See the License for the specific language governing permissions 
+// and limitations under the License.
 ////////////////////////////////////////////////////////////////////////////////////////////////
 
 `include "wally-config.vh"

testbench/testbench_imperas.sv

@@ -11,22 +11,18 @@
 // 
 // Copyright (C) 2021 Harvey Mudd College & Oklahoma State University
 //
-// MIT LICENSE
-// Permission is hereby granted, free of charge, to any person obtaining a copy of this 
-// software and associated documentation files (the "Software"), to deal in the Software 
-// without restriction, including without limitation the rights to use, copy, modify, merge, 
-// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons 
-// to whom the Software is furnished to do so, subject to the following conditions:
+// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
 //
-//   The above copyright notice and this permission notice shall be included in all copies or 
-//   substantial portions of the Software.
+// Licensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file 
+// except in compliance with the License, or, at your option, the Apache License version 2.0. You 
+// may obtain a copy of the License at
 //
-//   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
-//   INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 
-//   PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 
-//   BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
-//   TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE 
-//   OR OTHER DEALINGS IN THE SOFTWARE.
+// https://solderpad.org/licenses/SHL-2.1/
+//
+// Unless required by applicable law or agreed to in writing, any work distributed under the 
+// License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
+// either express or implied. See the License for the specific language governing permissions 
+// and limitations under the License.
 ////////////////////////////////////////////////////////////////////////////////////////////////
 
 `include "wally-config.vh"

testbench/tests-fp.vh

@@ -1,3 +1,29 @@
+///////////////////////////////////////////
+// tests0fo.vh
+//
+// Written: Katherine Parry 2022
+// Modified: 
+//
+// Purpose: List of floating-point tests to apply
+// 
+// A component of the Wally configurable RISC-V project.
+// 
+// Copyright (C) 2021-3 Harvey Mudd College & Oklahoma State University
+//
+// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
+//
+// Licensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file 
+// except in compliance with the License, or, at your option, the Apache License version 2.0. You 
+// may obtain a copy of the License at
+//
+// https://solderpad.org/licenses/SHL-2.1/
+//
+// Unless required by applicable law or agreed to in writing, any work distributed under the 
+// License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
+// either express or implied. See the License for the specific language governing permissions 
+// and limitations under the License.
+////////////////////////////////////////////////////////////////////////////////////////////////
+
 `define PATH "../../tests/fp/vectors/"
 `define ADD_OPCTRL 3'b110
 `define MUL_OPCTRL 3'b100

testbench/tests.vh

@@ -10,18 +10,19 @@
 // 
 // Copyright (C) 2021 Harvey Mudd College & Oklahoma State University
 //
-// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
-// files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, 
-// modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software 
-// is furnished to do so, subject to the following conditions:
+// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
 //
-// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+// Licensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file 
+// except in compliance with the License, or, at your option, the Apache License version 2.0. You 
+// may obtain a copy of the License at
 //
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 
-// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 
-// BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT 
-// OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-///////////////////////////////////////////
+// https://solderpad.org/licenses/SHL-2.1/
+//
+// Unless required by applicable law or agreed to in writing, any work distributed under the 
+// License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
+// either express or implied. See the License for the specific language governing permissions 
+// and limitations under the License.
+////////////////////////////////////////////////////////////////////////////////////////////////
 
 `define IMPERASTEST   "0"
 `define RISCVARCHTEST "1"
@@ -1883,6 +1884,7 @@ string imperas32f[] = '{
 
  string custom[] = '{
     `CUSTOM,
+    "debug",
     "simple",
     "cacheTest"
  };

tests/custom/debug/Makefile

@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
+
+TARGET = debug
+
+$(TARGET).elf.memfile:$(TARGET).elf $(TARGET).elf.objdump.addr
+	riscv64-unknown-elf-elf2hex --bit-width $(if $(findstring rv64,$*),64,32) --input $< --output $@
+
+$(TARGET).elf.objdump.addr: $(TARGET).elf.objdump
+	extractFunctionRadix.sh $<
+
+$(TARGET).elf.objdump: $(TARGET).elf
+	riscv64-unknown-elf-objdump -D $(TARGET).elf > $(TARGET).elf.objdump
+    
+$(TARGET).elf: $(TARGET).S Makefile
+	riscv64-unknown-elf-gcc -g -o $(TARGET).elf -march=rv64gc -mabi=lp64 -mcmodel=medany \
+	    -nostartfiles -T$(WALLY)/examples/link/link.ld $(TARGET).S 
+
+sim:
+	spike --isa=rv64gc +signature=$(TARGET).signature.output +signature-granularity=8 $(TARGET).elf
+	diff --ignore-case $(TARGET).signature.output $(TARGET).reference_output || exit
+	echo "Signature matches! Success!"
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).elf.*
+
+
+

tests/custom/debug/debug.S

@@ -0,0 +1,57 @@
+// debug.S
+// David_Harris@hmc.edu 4 February 2023
+// Small code snippets for the purpose of debugging issues
+// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
+
+.global rvtest_entry_point
+rvtest_entry_point:
+
+    # openhwgroup/cvw Issue #55
+    la a6, begin_signature
+    la a7, rvtest_data
+    fadd.d ft0, ft1, ft2
+    fld f4, 0(a7)
+    fld f9, 8(a7)
+#    li x1, 0x7ff0000000000001
+#    sd x1, 0(a6)
+#    fmv.w.x f4, x1
+#    li x1, 0x7ff8000000000000
+ #   fmv.w.x f9, x1
+    fsgnjx.s f12,f9,f4  # expected f 0xffffffff7fc00000
+    fsd f12, 0(a6)
+
+#########################
+# HTIF and signature
+#########################
+
+write_tohost:
+    la t1, tohost
+    li t0, 1            # 1 for success, 3 for failure
+    sd t0, 0(t1)        # send success code
+
+self_loop:
+    j self_loop         # wait
+    
+.align 6
+.section .tohost 
+tohost:                 # write to HTIF
+    .dword 0
+fromhost:
+    .dword 0
+
+.align 6
+.data
+
+rvtest_data:
+.dword 0x7ff0000000000001
+.dword 0x7ff8000000000000
+
+.EQU XLEN,64
+begin_signature:
+    .fill 2*(XLEN/32),4,0xdeadbeef    # 
+end_signature:
+
+# Initialize stack with room for 512 bytes
+.bss
+    .space 512
+topofstack: