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/* Determine the length of a string. For SPARC v9.
Copyright (C) 1998, 1999, 2003, 2010 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jan Vondrak <jvon4518@ss1000.ms.mff.cuni.cz>,
Jakub Jelinek <jj@ultra.linux.cz>, and
David S. Miller <davem@davemloft.net>.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
.register %g2, #scratch
.register %g3, #scratch
.text
.align 32
ENTRY(strlen)
mov %o0, %o1
andn %o0, 0x7, %o0
ldx [%o0], %o5
and %o1, 0x7, %g1
mov -1, %g5
sethi %hi(0x01010101), %o2
sll %g1, 3, %g1
or %o2, %lo(0x01010101), %o2
srlx %g5, %g1, %o3
sllx %o2, 32, %g1
sethi %hi(0x0000ff00), %g5
orn %o5, %o3, %o5
or %o2, %g1, %o2
sllx %o2, 7, %o3
10: add %o0, 8, %o0
andn %o3, %o5, %g1
sub %o5, %o2, %g2
andcc %g1, %g2, %g0
be,a,pt %xcc, 10b
ldx [%o0], %o5
srlx %o5, 32, %g1
andn %o3, %g1, %o4
sub %g1, %o2, %g2
add %o0, 4, %g3
andcc %o4, %g2, %g0
movne %icc, %g1, %o5
move %icc, %g3, %o0
or %g5, %lo(0x0000ff00), %g5
mov 3 - 8, %g2
andcc %o5, %g5, %g0
srlx %o5, 16, %g1
move %icc, 2 - 8, %g2
andcc %g1, 0xff, %g0
srl %o5, 24, %o5
move %icc, 1 - 8, %g2
movrz %o5, 0 - 8, %g2
sub %o0, %o1, %o0
retl
add %o0, %g2, %o0
END(strlen)
libc_hidden_builtin_def (strlen)
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