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- /* Copyright (C) 2005 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/>. */
- #include <sys/asm.h>
- #include <sysdep.h>
- #define _ERRNO_H 1
- #include <bits/errno.h>
- #include <sgidefs.h>
- ENTRY (pthread_spin_trylock)
- .set push
- #if _MIPS_SIM == _ABIO32
- .set mips2
- #endif
- ll a2, 0(a0)
- li a1, 1
- bnez a2, 1f
- sc a1, 0(a0)
- beqz a1, 1f
- MIPS_SYNC
- .set pop
- li v0, 0
- j ra
- nop
- 1: li v0, EBUSY
- j ra
- nop
- END (pthread_spin_trylock)
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