1 files changed, 111 insertions, 0 deletions

diff --git a/src/dtc/tests/path_offset.c b/src/dtc/tests/path_offset.c
new file mode 100644
index 0000000..4e5b7a1
--- /dev/null
+++ b/src/dtc/tests/path_offset.c
@@ -0,0 +1,111 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ *	Testcase for fdt_path_offset()
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+
+#include <libfdt.h>
+
+#include "tests.h"
+#include "testdata.h"
+
+static int check_subnode(void *fdt, int parent, const char *name)
+{
+	int offset;
+	const struct fdt_node_header *nh;
+	uint32_t tag;
+
+	verbose_printf("Checking subnode \"%s\" of %d...", name, parent);
+	offset = fdt_subnode_offset(fdt, parent, name);
+	verbose_printf("offset %d...", offset);
+	if (offset < 0)
+		FAIL("fdt_subnode_offset(\"%s\"): %s", name, fdt_strerror(offset));
+	nh = fdt_offset_ptr(fdt, offset, sizeof(*nh));
+	verbose_printf("pointer %p\n", nh);
+	if (! nh)
+		FAIL("NULL retrieving subnode \"%s\"", name);
+
+	tag = fdt32_to_cpu(nh->tag);
+
+	if (tag != FDT_BEGIN_NODE)
+		FAIL("Incorrect tag 0x%08x on property \"%s\"", tag, name);
+	if (!nodename_eq(nh->name, name))
+		FAIL("Subnode name mismatch \"%s\" instead of \"%s\"",
+		     nh->name, name);
+
+	return offset;
+}
+
+int main(int argc, char *argv[])
+{
+	void *fdt;
+	int root_offset;
+	int subnode1_offset, subnode2_offset;
+	int subnode1_offset_p, subnode2_offset_p;
+	int subsubnode1_offset, subsubnode2_offset, subsubnode2_offset2;
+	int subsubnode1_offset_p, subsubnode2_offset_p, subsubnode2_offset2_p;
+
+	test_init(argc, argv);
+	fdt = load_blob_arg(argc, argv);
+
+	root_offset = fdt_path_offset(fdt, "/");
+	if (root_offset < 0)
+		FAIL("fdt_path_offset(\"/\") failed: %s",
+		     fdt_strerror(root_offset));
+	else if (root_offset != 0)
+		FAIL("fdt_path_offset(\"/\") returns incorrect offset %d",
+		     root_offset);
+	subnode1_offset = check_subnode(fdt, 0, "subnode@1");
+	subnode2_offset = check_subnode(fdt, 0, "subnode@2");
+
+	subnode1_offset_p = fdt_path_offset(fdt, "/subnode@1");
+	subnode2_offset_p = fdt_path_offset(fdt, "/subnode@2");
+
+	if (subnode1_offset != subnode1_offset_p)
+		FAIL("Mismatch between subnode_offset (%d) and path_offset (%d)",
+		     subnode1_offset, subnode1_offset_p);
+
+	if (subnode2_offset != subnode2_offset_p)
+		FAIL("Mismatch between subnode_offset (%d) and path_offset (%d)",
+		     subnode2_offset, subnode2_offset_p);
+
+	subsubnode1_offset = check_subnode(fdt, subnode1_offset, "subsubnode");
+	subsubnode2_offset = check_subnode(fdt, subnode2_offset, "subsubnode@0");
+	subsubnode2_offset2 = check_subnode(fdt, subnode2_offset, "subsubnode");
+
+	subsubnode1_offset_p = fdt_path_offset(fdt, "/subnode@1/subsubnode");
+	subsubnode2_offset_p = fdt_path_offset(fdt, "/subnode@2/subsubnode@0");
+	subsubnode2_offset2_p = fdt_path_offset(fdt, "/subnode@2/subsubnode");
+
+	if (subsubnode1_offset != subsubnode1_offset_p)
+		FAIL("Mismatch between subnode_offset (%d) and path_offset (%d)",
+		     subsubnode1_offset, subsubnode1_offset_p);
+
+	if (subsubnode2_offset != subsubnode2_offset_p)
+		FAIL("Mismatch between subnode_offset (%d) and path_offset (%d)",
+		     subsubnode2_offset, subsubnode2_offset_p);
+
+	if (subsubnode2_offset2 != subsubnode2_offset2_p)
+		FAIL("Mismatch between subnode_offset (%d) and path_offset (%d)",
+		     subsubnode2_offset2, subsubnode2_offset2_p);
+
+	PASS();
+}