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") 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