1 /*-
2 * Copyright (c) 2013 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Matt Thomas of 3am Software Foundry.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31
32 __RCSID("$NetBSD: powerpc_initfini.c,v 1.1 2013/08/30 21:28:59 matt Exp $");
33
34 #include "namespace.h"
35
36 /*
37 * Grab the cache_info at load time.
38 */
39
40 #include <sys/param.h>
41 #include <sys/sysctl.h>
42 #include <sys/queue.h>
43 #include <sys/cpu.h>
44
45 #include <stdbool.h>
46 #include <stddef.h>
47
48 __dso_hidden struct cache_info _libc_powerpc_cache_info;
49
50 static void _libc_cache_info_init(void)
51 __attribute__((__constructor__, __used__));
52
53 void __section(".text.startup")
_libc_cache_info_init(void)54 _libc_cache_info_init(void)
55 {
56 static bool initialized;
57 if (!initialized) {
58 const int name[2] = { CTL_MACHDEP, CPU_CACHEINFO };
59 size_t len = sizeof(_libc_powerpc_cache_info);
60 (void)sysctl(name, __arraycount(name),
61 &_libc_powerpc_cache_info, &len, NULL, 0);
62 initialized = 1;
63 }
64 }
65