tools: Add baseconfig to C++ exporter

Signed-off-by: David Shah <dave@ds0.me>

tools/export_baseconfig.py

diff --git a/tools/export_baseconfig.py b/tools/export_baseconfig.py
new file mode 100755
index 0000000..a0c9524
--- /dev/null
+++ b/tools/export_baseconfig.py
@@ -0,0 +1,38 @@
+#!/usr/bin/env python3
+import pytrellis
+import sys
+from os import path
+
+def main(argv):
+	print('#include "nextpnr.h"')
+	print('#include "config.h"')
+	print()
+	print('NEXTPNR_NAMESPACE_BEGIN')
+	print('namespace BaseConfigs {')
+	for file in argv:
+		name = path.splitext(path.basename(file))[0]
+		name = name.replace('-', '_')
+		with open(file, 'r') as f:
+			cc = pytrellis.ChipConfig.from_string(f.read())
+		print('void config_{}(ChipConfig &cc) {{'.format(name))
+		print('    cc.chip_name = "{}";'.format(cc.chip_name))
+		for meta in cc.metadata:
+			print('    cc.metadata.push_back("{}");'.format(meta.replace("\n", "\\n")))
+		for tile in cc.tiles:
+			tn = tile.key()
+			tc = tile.data()
+			for arc in tc.carcs:
+				print('    cc.tiles["{}"].add_arc("{}", "{}");'.format(tn, arc.sink, arc.source))
+			for cw in tc.cwords:
+				print('    cc.tiles["{}"].add_word("{}", std::vector<bool>{{{}}});'.format(tn, cw.name, ", ".join(["true" if x else "false" for x in cw.value])))
+			for ce in tc.cenums:
+				print('    cc.tiles["{}"].add_enum("{}", "{}");'.format(tn, ce.name, ce.value))
+			for cu in tc.cunknowns:
+				print('    cc.tiles["{}"].add_unknown({}, {});'.format(tn, cu.frame, cu.bit))
+		print('}')
+		print()
+	print('}')
+	print('NEXTPNR_NAMESPACE_END')
+
+if __name__ == "__main__":
+	main(sys.argv[1:])