1 files changed, 62 insertions, 0 deletions
diff --git a/dtc/tests/move_and_save.c b/dtc/tests/move_and_save.c
new file mode 100644
index 000000000..a89f8dedd
--- /dev/null
+++ b/dtc/tests/move_and_save.c
@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+/*
+ * libfdt - Flat Device Tree manipulation
+ *	Basic testcase for read-only access
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+#include <stdint.h>
+
+#include <libfdt.h>
+
+#include "tests.h"
+#include "testdata.h"
+
+int main(int argc, char *argv[])
+{
+	void *fdt, *fdt1, *fdt2, *fdt3;
+	char *buf;
+	int shuntsize;
+	int bufsize;
+	int err;
+	const char *inname;
+	char outname[PATH_MAX];
+
+	test_init(argc, argv);
+	fdt = load_blob_arg(argc, argv);
+	inname = argv[1];
+
+	shuntsize = ALIGN(fdt_totalsize(fdt) / 2, sizeof(uint64_t));
+	bufsize = fdt_totalsize(fdt) + shuntsize;
+	buf = xmalloc(bufsize);
+
+	fdt1 = buf;
+	err = fdt_move(fdt, fdt1, bufsize);
+	if (err)
+		FAIL("Failed to move tree into new buffer: %s",
+		     fdt_strerror(err));
+	sprintf(outname, "moved.%s", inname);
+	save_blob(outname, fdt1);
+
+	fdt2 = buf + shuntsize;
+	err = fdt_move(fdt1, fdt2, bufsize-shuntsize);
+	if (err)
+		FAIL("Failed to shunt tree %d bytes: %s",
+		     shuntsize, fdt_strerror(err));
+	sprintf(outname, "shunted.%s", inname);
+	save_blob(outname, fdt2);
+
+	fdt3 = buf;
+	err = fdt_move(fdt2, fdt3, bufsize);
+	if (err)
+		FAIL("Failed to deshunt tree %d bytes: %s",
+		     shuntsize, fdt_strerror(err));
+	sprintf(outname, "deshunted.%s", inname);
+	save_blob(outname, fdt3);
+
+	PASS();
+}