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Add support for testbench simulation #4

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27 changes: 15 additions & 12 deletions Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,8 @@ BITGEN_OPTS ?=
TRACE_OPTS ?=
FUSE_OPTS ?= -incremental

TEST_POSTFIX ?= _tb

PROGRAMMER ?= none

IMPACT_OPTS ?= -batch impact.cmd
Expand Down Expand Up @@ -67,6 +69,8 @@ else
PATH := $(PATH):$(XILINX)/bin/$(XILINX_PLATFORM)
endif

VTEST = $(foreach file,$(wildcard *$(TEST_POSTFIX).v),$(file))
VHDTEST = $(foreach file,$(wildcard *$(TEST_POSTFIX).vhd),$(file))
TEST_NAMES = $(foreach file,$(VTEST) $(VHDTEST),$(basename $(file)))
TEST_EXES = $(foreach test,$(TEST_NAMES),build/isim_$(test)$(EXE))

Expand Down Expand Up @@ -138,24 +142,23 @@ trace: project.cfg $(BITFILE)
$(call RUN,trce) $(COMMON_OPTS) $(TRACE_OPTS) \
$(PROJECT).ncd $(PROJECT).pcf

test: $(TEST_EXES)
test: buildtest runtest

runtest: ${TEST_NAMES}

${TEST_NAMES}:
@grep --no-filename --no-messages 'ISIM:' $@.{v,vhd} | cut -d: -f2 > build/isim_$@.cmd
@echo "run all" >> build/isim_$@.cmd
cd build ; ./isim_$@$(EXE) -tclbatch isim_$@.cmd ;

build/isim_%$(EXE): build/$(PROJECT)_sim.prj $(VSOURCE) $(VHDSOURCE) $(VTEST) $(VHDTEST)
buildtest: ${TEST_EXES}

build/isim_%$(EXE): build/$(PROJECT)_sim.prj $(VSOURCE) $(VHDSOURCE) ${VTEST} $(VHDTEST)
$(call RUN,fuse) $(COMMON_OPTS) $(FUSE_OPTS) \
-prj $(PROJECT)_sim.prj \
-o isim_$*$(EXE) \
work.$* work.glbl

isim: build/isim_$(TB)$(EXE)
@grep --no-filename --no-messages 'ISIM:' $(TB).{v,vhd} | cut -d: -f2 > build/isim_$(TB).cmd
@echo "run all" >> build/isim_$(TB).cmd
cd build ; ./isim_$(TB)$(EXE) -tclbatch isim_$(TB).cmd

isimgui: build/isim_$(TB)$(EXE)
@grep --no-filename --no-messages 'ISIM:' $(TB).{v,vhd} | cut -d: -f2 > build/isim_$(TB).cmd
@echo "run all" >> build/isim_$(TB).cmd
cd build ; ./isim_$(TB)$(EXE) -gui -tclbatch isim_$(TB).cmd


###########################################################################
# Programming
Expand Down
16 changes: 15 additions & 1 deletion README.md
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Expand Up @@ -139,6 +139,10 @@ The Xilinx ISE Makefile implements the following targets:

Builds the bitstream.

* `make test`

Runs any testbenches.

* `make clean`

Removes the build directory.
Expand All @@ -152,7 +156,17 @@ The Xilinx ISE Makefile implements the following targets:
Running unit tests
------------------

is a work in progress.
Test `test` target will build and run any testbenches that have been created.

A testbench is any file with a file finishing in `_tb` (overridden by `TEST_POSTFIX`).


Caviates
--------

* Module names need to match the filename they are within.

* Module names cannot start with a number.


Unimplemented features
Expand Down