1/*	$NetBSD: node_offset_by_compatible.c,v 1.1.1.3 2019/12/22 12:34:06 skrll Exp $	*/
2
3// SPDX-License-Identifier: LGPL-2.1-or-later
4/*
5 * libfdt - Flat Device Tree manipulation
6 *	Testcase for fdt_node_offset_by_compatible()
7 * Copyright (C) 2006 David Gibson, IBM Corporation.
8 */
9#include <stdlib.h>
10#include <stdio.h>
11#include <string.h>
12#include <stdint.h>
13#include <stdarg.h>
14
15#include <libfdt.h>
16
17#include "tests.h"
18#include "testdata.h"
19
20static void check_search(void *fdt, const char *compat, ...)
21{
22	va_list ap;
23	int offset = -1, target;
24
25	va_start(ap, compat);
26	do {
27		target = va_arg(ap, int);
28		verbose_printf("Searching (target = %d): %d ->",
29			       target, offset);
30		offset = fdt_node_offset_by_compatible(fdt, offset, compat);
31		verbose_printf("%d\n", offset);
32
33		if (offset != target)
34			FAIL("fdt_node_offset_by_compatible(%s) returns %d "
35			     "instead of %d", compat, offset, target);
36	} while (target >= 0);
37
38	va_end(ap);
39}
40
41int main(int argc, char *argv[])
42{
43	void *fdt;
44	int subnode1_offset, subnode2_offset;
45	int subsubnode1_offset, subsubnode2_offset;
46
47	test_init(argc, argv);
48	fdt = load_blob_arg(argc, argv);
49
50	subnode1_offset = fdt_path_offset(fdt, "/subnode@1");
51	subnode2_offset = fdt_path_offset(fdt, "/subnode@2");
52	subsubnode1_offset = fdt_path_offset(fdt, "/subnode@1/subsubnode");
53	subsubnode2_offset = fdt_path_offset(fdt, "/subnode@2/subsubnode@0");
54
55	if ((subnode1_offset < 0) || (subnode2_offset < 0)
56	    || (subsubnode1_offset < 0) || (subsubnode2_offset < 0))
57		FAIL("Can't find required nodes");
58
59	check_search(fdt, "test_tree1", 0, -FDT_ERR_NOTFOUND);
60	check_search(fdt, "subnode1", subnode1_offset, -FDT_ERR_NOTFOUND);
61	check_search(fdt, "subsubnode1", subsubnode1_offset, -FDT_ERR_NOTFOUND);
62	check_search(fdt, "subsubnode2", subsubnode2_offset, -FDT_ERR_NOTFOUND);
63	/* Eek.. HACK to make this work whatever the order in the
64	 * example tree */
65	if (subsubnode1_offset < subsubnode2_offset)
66		check_search(fdt, "subsubnode", subsubnode1_offset,
67			     subsubnode2_offset, -FDT_ERR_NOTFOUND);
68	else
69		check_search(fdt, "subsubnode", subsubnode2_offset,
70			     subsubnode1_offset, -FDT_ERR_NOTFOUND);
71	check_search(fdt, "nothing-like-this", -FDT_ERR_NOTFOUND);
72
73	PASS();
74}
75