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Use (fast!) dcbz asm instruction in pmap_zero_page().

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This commit is contained in:
tsubai 1999-01-12 11:03:04 +00:00
parent bb426487a5
commit c2bb308ef9
1 changed files with 10 additions and 1 deletions
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11
sys/arch/powerpc/powerpc/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.12 1999/01/12 10:26:18 tsubai Exp $ */
/* $NetBSD: pmap.c,v 1.13 1999/01/12 11:03:04 tsubai Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
@ -805,7 +805,16 @@ void
pmap_zero_page(pa)
paddr_t pa;
{
#if 0
bzero((caddr_t)pa, NBPG);
#else
int i;
for (i = NBPG/CACHELINESIZE; i > 0; i--) {
__asm __volatile ("dcbz 0,%0" :: "r"(pa));
pa += CACHELINESIZE;
}
#endif
}
/*