export size_t __getcachelinesize(void) for memset()
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@ -1,4 +1,4 @@
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/* $NetBSD: syncicache.c,v 1.11 2002/11/26 21:14:04 thorpej Exp $ */
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/* $NetBSD: syncicache.c,v 1.12 2003/08/11 02:11:23 matt Exp $ */
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/*
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* Copyright (C) 1995-1997, 1999 Wolfgang Solfrank.
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@ -57,24 +57,27 @@ static struct cache_info _cache_info = {
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#else
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#include <stdlib.h>
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static void getcachelinesize (void);
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size_t __getcachelinesize (void);
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static int _cachelinesize = 0;
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static struct cache_info _cache_info;
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#define CACHEINFO _cache_info
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static void
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getcachelinesize(void)
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size_t
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__getcachelinesize(void)
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{
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static int cachemib[] = { CTL_MACHDEP, CPU_CACHELINE };
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static int cacheinfomib[] = { CTL_MACHDEP, CPU_CACHEINFO };
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size_t clen = sizeof(_cache_info);
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if (_cachelinesize)
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return _cachelinesize;
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if (sysctl(cacheinfomib, sizeof(cacheinfomib) / sizeof(cacheinfomib[0]),
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&_cache_info, &clen, NULL, 0) == 0) {
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_cachelinesize = _cache_info.dcache_line_size;
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return;
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return _cachelinesize;
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}
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/* Try older deprecated sysctl */
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@ -88,8 +91,12 @@ getcachelinesize(void)
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_cache_info.dcache_line_size = _cachelinesize;
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_cache_info.icache_size = _cachelinesize;
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_cache_info.icache_line_size = _cachelinesize;
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/* If there is no cache, indicate we have issued the sysctl. */
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if (!_cachelinesize) _cachelinesize = 1;
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if (!_cachelinesize)
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_cachelinesize = 1;
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return _cachelinesize;
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}
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#endif
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@ -102,7 +109,7 @@ __syncicache(void *from, size_t len)
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#if !defined(_KERNEL) && !defined(_STANDALONE)
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if (!_cachelinesize)
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getcachelinesize();
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__getcachelinesize();
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#endif
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if (CACHEINFO.dcache_size > 0) {
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