| /* Copyright (C) 2002-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. |
| |
| 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> |
| #include <shlib-compat.h> |
| #include <pthread-errnos.h> |
| #include <lowlevellock.h> |
| |
| .text |
| |
| .globl __new_sem_trywait |
| .type __new_sem_trywait,@function |
| .align 16 |
| __new_sem_trywait: |
| movl 4(%esp), %ecx |
| |
| movl (%ecx), %eax |
| 2: testl %eax, %eax |
| jz 1f |
| |
| leal -1(%eax), %edx |
| LOCK |
| cmpxchgl %edx, (%ecx) |
| jne 2b |
| xorl %eax, %eax |
| ret |
| |
| 1: |
| #ifdef PIC |
| SETUP_PIC_REG(cx) |
| #else |
| movl $3f, %ecx |
| 3: |
| #endif |
| addl $_GLOBAL_OFFSET_TABLE_, %ecx |
| #ifdef NO_TLS_DIRECT_SEG_REFS |
| movl errno@gotntpoff(%ecx), %edx |
| addl %gs:0, %edx |
| movl $EAGAIN, (%edx) |
| #else |
| movl errno@gotntpoff(%ecx), %edx |
| movl $EAGAIN, %gs:(%edx) |
| #endif |
| orl $-1, %eax |
| ret |
| .size __new_sem_trywait,.-__new_sem_trywait |
| versioned_symbol(libpthread, __new_sem_trywait, sem_trywait, GLIBC_2_1) |
| #if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1) |
| .global __old_sem_trywait |
| __old_sem_trywait = __new_sem_trywait |
| compat_symbol(libpthread, __old_sem_trywait, sem_trywait, GLIBC_2_0) |
| #endif |
