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/* Optimized strlen implementation for PowerPC.
Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
.section ".text"
.align 2
.globl strlen
.type strlen,@function
strlen:
rlwinm 7,3,0,0,29
lis 8,0x7f7f
lwz 11,0(7)
ori 8,8,32639
rlwinm 4,3,3,27,28
li 9,-1
or 10,11,8
and 0,11,8
srw 9,9,4
add 0,0,8
nor 0,10,0
and. 11,0,9
bc 4,2,.L2
.L3:
lwzu 11,4(7)
or 10,11,8
and 0,11,8
add 0,0,8
nor. 11,10,0
bc 12,2,.L3
.L2:
subf 0,3,7
cntlzw 3,11
srwi 3,3,3
add 3,0,3
blr
.Lfe1:
.size strlen,.Lfe1-strlen
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