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- /* Copyright (C) 2002, 2003, 2005, 2007 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 <pthread-errnos.h>
- #include <lowlevellock.h>
- .text
- .globl sem_trywait
- .type sem_trywait,@function
- .align 16
- 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__
- call __x86.get_pc_thunk.cx
- #else
- movl $3f, %ecx
- 3:
- #endif
- addl $_GLOBAL_OFFSET_TABLE_, %ecx
- #if USE___THREAD
- # 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
- #else
- call __errno_location@plt
- movl $EAGAIN, (%eax)
- #endif
- orl $-1, %eax
- ret
- .size sem_trywait,.-sem_trywait
- #ifdef __PIC__
- .section .gnu.linkonce.t.__x86.get_pc_thunk.cx,"ax",@progbits
- .globl __x86.get_pc_thunk.cx
- .hidden __x86.get_pc_thunk.cx
- .type __x86.get_pc_thunk.cx,@function
- __x86.get_pc_thunk.cx:
- movl (%esp), %ecx;
- ret
- .size __x86.get_pc_thunk.cx,.-__x86.get_pc_thunk.cx
- #endif
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