1 files changed, 110 insertions, 0 deletions

diff --git a/src/dtc/tests/node_offset_by_prop_value.c b/src/dtc/tests/node_offset_by_prop_value.c
new file mode 100644
index 0000000..9212a4e
--- /dev/null
+++ b/src/dtc/tests/node_offset_by_prop_value.c
@@ -0,0 +1,110 @@
+/*
+ * 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 <stdarg.h>
+
+#include <libfdt.h>
+
+#include "tests.h"
+#include "testdata.h"
+
+static void vcheck_search(void *fdt, const char *propname, const void *propval,
+		  int proplen, va_list ap)
+{
+	int offset = -1, target;
+
+	do {
+		target = va_arg(ap, int);
+		verbose_printf("Searching (target = %d): %d ->",
+			       target, offset);
+		offset = fdt_node_offset_by_prop_value(fdt, offset, propname,
+						       propval, proplen);
+		verbose_printf("%d\n", offset);
+
+		if (offset != target)
+			FAIL("fdt_node_offset_by_prop_value() returns %d "
+			     "instead of %d", offset, target);
+	} while (target >= 0);
+}
+
+static void check_search(void *fdt, const char *propname, const void *propval,
+		  int proplen, ...)
+{
+	va_list ap;
+
+	va_start(ap, proplen);
+	vcheck_search(fdt, propname, propval, proplen, ap);
+	va_end(ap);
+}
+
+static void check_search_str(void *fdt, const char *propname,
+			     const char *propval, ...)
+{
+	va_list ap;
+
+	va_start(ap, propval);
+	vcheck_search(fdt, propname, propval, strlen(propval)+1, ap);
+	va_end(ap);
+}
+
+#define check_search_cell(fdt, propname, propval, ...) \
+	{ \
+		uint32_t val = cpu_to_fdt32(propval); \
+		check_search((fdt), (propname), &val, sizeof(val), \
+			     ##__VA_ARGS__); \
+	}
+
+int main(int argc, char *argv[])
+{
+	void *fdt;
+	int subnode1_offset, subnode2_offset;
+	int subsubnode1_offset, subsubnode2_offset;
+
+	test_init(argc, argv);
+	fdt = load_blob_arg(argc, argv);
+
+	subnode1_offset = fdt_path_offset(fdt, "/subnode@1");
+	subnode2_offset = fdt_path_offset(fdt, "/subnode@2");
+	subsubnode1_offset = fdt_path_offset(fdt, "/subnode@1/subsubnode");
+	subsubnode2_offset = fdt_path_offset(fdt, "/subnode@2/subsubnode@0");
+
+	if ((subnode1_offset < 0) || (subnode2_offset < 0)
+	    || (subsubnode1_offset < 0) || (subsubnode2_offset < 0))
+		FAIL("Can't find required nodes");
+
+	check_search_cell(fdt, "prop-int", TEST_VALUE_1, 0, subnode1_offset,
+			  subsubnode1_offset, -FDT_ERR_NOTFOUND);
+
+	check_search_cell(fdt, "prop-int", TEST_VALUE_2, subnode2_offset,
+			  subsubnode2_offset, -FDT_ERR_NOTFOUND);
+
+	check_search_str(fdt, "prop-str", TEST_STRING_1, 0, -FDT_ERR_NOTFOUND);
+
+	check_search_str(fdt, "prop-str", "no such string", -FDT_ERR_NOTFOUND);
+
+	check_search_cell(fdt, "prop-int", TEST_VALUE_1+1, -FDT_ERR_NOTFOUND);
+
+	check_search(fdt, "no-such-prop", NULL, 0, -FDT_ERR_NOTFOUND);
+
+	PASS();
+}