52 lines
1.2 KiB
ArmAsm
52 lines
1.2 KiB
ArmAsm
/* Copyright (C) 2000-2014 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 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/>. */
|
|
|
|
/* Finds the first bit set in an integer. */
|
|
|
|
#include <sysdep.h>
|
|
|
|
.arch ev6
|
|
.set noreorder
|
|
.set noat
|
|
|
|
|
|
ENTRY(__ffs)
|
|
#ifdef PROF
|
|
ldgp gp, 0(pv)
|
|
lda AT, _mcount
|
|
jsr AT, (AT), _mcount
|
|
.prologue 1
|
|
#else
|
|
.prologue 0
|
|
#endif
|
|
|
|
zap $16, 0xF0, $16
|
|
cttz $16, $0
|
|
addq $0, 1, $0
|
|
cmoveq $16, 0, $0
|
|
|
|
nop
|
|
nop
|
|
nop
|
|
ret
|
|
|
|
END(__ffs)
|
|
|
|
weak_alias (__ffs, ffs)
|
|
libc_hidden_def (__ffs)
|
|
libc_hidden_builtin_def (ffs)
|