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export size_t __getcachelinesize(void) for memset()

This commit is contained in:
matt 2003-08-11 02:11:23 +00:00
parent 341742a7e9
commit 4907369a14
1 changed files with 14 additions and 7 deletions
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21
lib/libc/arch/powerpc/gen/syncicache.c
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@ -1,4 +1,4 @@
/* $NetBSD: syncicache.c,v 1.11 2002/11/26 21:14:04 thorpej Exp $ */ /* $NetBSD: syncicache.c,v 1.12 2003/08/11 02:11:23 matt Exp $ */
/* /*
* Copyright (C) 1995-1997, 1999 Wolfgang Solfrank. * Copyright (C) 1995-1997, 1999 Wolfgang Solfrank.
@ -57,24 +57,27 @@ static struct cache_info _cache_info = {
#else #else
#include <stdlib.h> #include <stdlib.h>
static void getcachelinesize (void); size_t __getcachelinesize (void);
static int _cachelinesize = 0; static int _cachelinesize = 0;
static struct cache_info _cache_info; static struct cache_info _cache_info;
#define CACHEINFO _cache_info #define CACHEINFO _cache_info
static void size_t
getcachelinesize(void) __getcachelinesize(void)
{ {
static int cachemib[] = { CTL_MACHDEP, CPU_CACHELINE }; static int cachemib[] = { CTL_MACHDEP, CPU_CACHELINE };
static int cacheinfomib[] = { CTL_MACHDEP, CPU_CACHEINFO }; static int cacheinfomib[] = { CTL_MACHDEP, CPU_CACHEINFO };
size_t clen = sizeof(_cache_info); size_t clen = sizeof(_cache_info);
if (_cachelinesize)
return _cachelinesize;
if (sysctl(cacheinfomib, sizeof(cacheinfomib) / sizeof(cacheinfomib[0]), if (sysctl(cacheinfomib, sizeof(cacheinfomib) / sizeof(cacheinfomib[0]),
&_cache_info, &clen, NULL, 0) == 0) { &_cache_info, &clen, NULL, 0) == 0) {
_cachelinesize = _cache_info.dcache_line_size; _cachelinesize = _cache_info.dcache_line_size;
return; return _cachelinesize;
} }
/* Try older deprecated sysctl */ /* Try older deprecated sysctl */
@ -88,8 +91,12 @@ getcachelinesize(void)
_cache_info.dcache_line_size = _cachelinesize; _cache_info.dcache_line_size = _cachelinesize;
_cache_info.icache_size = _cachelinesize; _cache_info.icache_size = _cachelinesize;
_cache_info.icache_line_size = _cachelinesize; _cache_info.icache_line_size = _cachelinesize;
/* If there is no cache, indicate we have issued the sysctl. */ /* If there is no cache, indicate we have issued the sysctl. */
if (!_cachelinesize) _cachelinesize = 1; if (!_cachelinesize)
_cachelinesize = 1;
return _cachelinesize;
} }
#endif #endif
@ -102,7 +109,7 @@ __syncicache(void *from, size_t len)
#if !defined(_KERNEL) && !defined(_STANDALONE) #if !defined(_KERNEL) && !defined(_STANDALONE)
if (!_cachelinesize) if (!_cachelinesize)
getcachelinesize(); __getcachelinesize();
#endif #endif
if (CACHEINFO.dcache_size > 0) { if (CACHEINFO.dcache_size > 0) {