projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f7a9f785 | 1 | /* Copyright (C) 2000-2016 Free Software Foundation, Inc. |
| bccd0628 UD |
2 | This file is part of the GNU C Library. |
| 3 | ||
| 4 | The GNU C Library is free software; you can redistribute it and/or | |
| 3214b89b AJ |
5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either | |
| 7 | version 2.1 of the License, or (at your option) any later version. | |
| bccd0628 UD |
8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 3214b89b | 12 | Lesser General Public License for more details. |
| bccd0628 | 13 | |
| 3214b89b | 14 | You should have received a copy of the GNU Lesser General Public |
| ab84e3ff PE |
15 | License along with the GNU C Library. If not, see |
| 16 | <http://www.gnu.org/licenses/>. */ | |
| bccd0628 UD |
17 | |
| 18 | /* Finds the first bit set in an integer. */ | |
| 19 | ||
| 20 | #include <sysdep.h> | |
| 21 | ||
| 22 | .arch ev6 | |
| 23 | .set noreorder | |
| 24 | .set noat | |
| 25 | ||
| 26 | ||
| 27 | ENTRY(__ffs) | |
| 28 | #ifdef PROF | |
| 29 | ldgp gp, 0(pv) | |
| 30 | lda AT, _mcount | |
| 31 | jsr AT, (AT), _mcount | |
| 32 | .prologue 1 | |
| 33 | #else | |
| 34 | .prologue 0 | |
| 35 | #endif | |
| 36 | ||
| 37 | zap $16, 0xF0, $16 | |
| 38 | cttz $16, $0 | |
| 39 | addq $0, 1, $0 | |
| 40 | cmoveq $16, 0, $0 | |
| 41 | ||
| 42 | nop | |
| 43 | nop | |
| 44 | nop | |
| 45 | ret | |
| 46 | ||
| 47 | END(__ffs) | |
| 48 | ||
| 49 | weak_alias (__ffs, ffs) | |
| 5bb43a43 | 50 | libc_hidden_def (__ffs) |
| 38c0241e | 51 | libc_hidden_builtin_def (ffs) |