Added simple xilinx7 technology mapping files

techlibs/xilinx7/run_testbench.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+set -ex
+
+XILINX_DIR=/opt/Xilinx/14.5/ISE_DS/ISE/
+
+../../yosys - <<- EOT
+	# read design
+	read_verilog counter.v
+
+	# high-level synthesis
+	hierarchy -check -top counter
+	proc; opt; fsm; opt; techmap; opt
+
+	# mapping logic to LUTs using Berkeley ABC
+	abc -lut 6; opt
+
+	# map internal cells to FPGA cells
+	techmap -map cells.v; opt
+
+	# write netlist
+	write_verilog -noattr testbench_synth.v
+EOT
+
+iverilog -o testbench_gold counter_tb.v counter.v
+iverilog -o testbench_gate counter_tb.v testbench_synth.v \
+	$XILINX_DIR/verilog/src/{glbl,unisims/{FDRE,LUT1,LUT2,LUT3,LUT4,LUT5,LUT6}}.v
+
+./testbench_gold > testbench_gold.txt
+./testbench_gate > testbench_gate.txt
+
+if diff -u testbench_gold.txt testbench_gate.txt; then
+	set +x; echo; echo; banner "  PASS  "
+else
+	exit 1
+fi
+
+if [ "$*" = "-clean" ]; then
+	rm -f testbench_{synth.v,{gold,gate}{,.txt}}
+fi
+