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Optimization to pmap_zero_page(): we only need to use the first 16 FP regs, 

as in bzero().
This commit is contained in:
mycroft 2000-07-24 16:21:02 +00:00
parent fe9795a1e5
commit b77782d785
1 changed files with 2 additions and 10 deletions
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12
sys/arch/sparc64/sparc64/locore.s
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@ -1,4 +1,4 @@
/* $NetBSD: locore.s,v 1.88 2000/07/24 16:08:18 mycroft Exp $ */
/* $NetBSD: locore.s,v 1.89 2000/07/24 16:21:02 mycroft Exp $ */
/*
* Copyright (c) 1996-1999 Eduardo Horvath
* Copyright (c) 1996 Paul Kranenburg
@ -8582,14 +8582,6 @@ ENTRY(pmap_zero_page)
fzero %f10
fzero %f12
fzero %f14
fzero %f16 ! And second bank
fzero %f18
fzero %f20
fzero %f22
fzero %f24
fzero %f26
fzero %f28
fzero %f30
stxa %o3, [%o3] ASI_DMMU_DEMAP ! Do the demap
membar #Sync ! No real reason for this XXXX
@ -8610,7 +8602,7 @@ ENTRY(pmap_zero_page)
stda %f0, [%o2] ASI_BLK_COMMIT_P ! Store 64 bytes
add %o2, 64, %o2
dec 128, %o4
stda %f16, [%o2] ASI_BLK_COMMIT_P ! Store 64 bytes
stda %f0, [%o2] ASI_BLK_COMMIT_P ! Store 64 bytes
brgz,pt %o4, 1b
add %o2, 64, %o2