projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| d4697bc9 | 1 | /* Copyright (C) 2012-2014 Free Software Foundation, Inc. |
| 76a50749 | 2 | This file is part of the GNU C Library. |
| 76a50749 UD |
3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or | |
| 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. | |
| 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 | |
| 12 | Lesser General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU Lesser General Public | |
| 59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ | |
| 76a50749 | 17 | |
| b93d565a | 18 | #include <lowlevellock.h> |
| ff8a695b | 19 | |
| b93d565a PP |
20 | .globl pthread_spin_lock |
| 21 | .type pthread_spin_lock,@function | |
| 22 | .align 16 | |
| 23 | pthread_spin_lock: | |
| 24 | 1: LOCK | |
| 25 | decl 0(%rdi) | |
| 26 | jne 2f | |
| 27 | xor %eax, %eax | |
| 28 | ret | |
| 29 | ||
| 30 | .align 16 | |
| 31 | 2: rep | |
| 32 | nop | |
| 33 | cmpl $0, 0(%rdi) | |
| 34 | jg 1b | |
| 35 | jmp 2b | |
| 36 | .size pthread_spin_lock,.-pthread_spin_lock |