added bit2fp stub

bit2fp.c

@@ -0,0 +1,42 @@
+//
+// Author: Wolfgang Spraul
+//
+// This is free and unencumbered software released into the public domain.
+// For details see the UNLICENSE file at the root of the source tree.
+//
+
+#include "model.h"
+#include "floorplan.h"
+#include "bits.h"
+
+int main(int argc, char** argv)
+{
+	struct fpga_model model;
+	FILE* fbits;
+	int rc = -1;
+
+	if (argc != 3) {
+		fprintf(stderr,
+			"\n"
+			"%s - bitstream to floorplan\n"
+			"Usage: %s <bitstream_file>\n"
+			"\n", argv[0], argv[0]);
+		goto fail;
+	}
+
+	fbits = fopen(argv[1], "r");
+	if (!fbits) {
+		fprintf(stderr, "Error opening %s.\n", argv[1]);
+		goto fail;
+	}
+
+	if ((rc = fpga_build_model(&model, XC6SLX9_ROWS, XC6SLX9_COLUMNS,
+			XC6SLX9_LEFT_WIRING, XC6SLX9_RIGHT_WIRING)))
+		goto fail;
+
+	if ((rc = read_bits(&model, fbits))) goto fail;
+	if ((rc = write_floorplan(stdout, &model))) goto fail;
+	return EXIT_SUCCESS;
+fail:
+	return rc;
+}