diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/mips/pthread_spin_lock.S')
| -rw-r--r-- | libpthread/nptl/sysdeps/mips/pthread_spin_lock.S | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/mips/pthread_spin_lock.S b/libpthread/nptl/sysdeps/mips/pthread_spin_lock.S new file mode 100644 index 000000000..e35c381ed --- /dev/null +++ b/libpthread/nptl/sysdeps/mips/pthread_spin_lock.S @@ -0,0 +1,38 @@ +/* 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sys/asm.h> +#include <sysdep.h> +#include <sgidefs.h> + +ENTRY (pthread_spin_lock) + .set push +#if _MIPS_SIM == _ABIO32 + .set mips2 +#endif +1: ll a2, 0(a0) + li a1, 1 + bnez a2, 1b + sc a1, 0(a0) + beqz a1, 1b + MIPS_SYNC + .set pop + li v0, 0 + j ra + nop +END (pthread_spin_lock) |