diff options
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/mips/pspinlock.c')
-rw-r--r-- | libpthread/linuxthreads/sysdeps/mips/pspinlock.c | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/libpthread/linuxthreads/sysdeps/mips/pspinlock.c b/libpthread/linuxthreads/sysdeps/mips/pspinlock.c deleted file mode 100644 index 7b9205ef0..000000000 --- a/libpthread/linuxthreads/sysdeps/mips/pspinlock.c +++ /dev/null @@ -1,95 +0,0 @@ -/* POSIX spinlock implementation. MIPS version. - Copyright (C) 2000, 2002, 2003, 2004 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; see the file COPYING.LIB. If - not, see <http://www.gnu.org/licenses/>. */ - -#include <errno.h> -#include <pthread.h> -#include <sgidefs.h> -#include <sys/tas.h> -#include "internals.h" - -/* This implementation is similar to the one used in the Linux kernel. */ -int -__pthread_spin_lock (pthread_spinlock_t *lock) -{ - unsigned int tmp1, tmp2; - - __asm__ __volatile__ - ("\t\t\t# spin_lock\n" - "1:\n\t" - ".set push\n\t" -#if _MIPS_SIM == _ABIO32 - ".set mips2\n\t" -#endif - "ll %1,%3\n\t" - "li %2,1\n\t" - "bnez %1,1b\n\t" - "sc %2,%0\n\t" - ".set pop\n\t" - "beqz %2,1b" - : "=m" (*lock), "=&r" (tmp1), "=&r" (tmp2) - : "m" (*lock) - : "memory"); - - return 0; -} - -weak_alias (__pthread_spin_lock, pthread_spin_lock) - - -int -__pthread_spin_trylock (pthread_spinlock_t *lock) -{ - /* To be done. */ - return 0; -} -weak_alias (__pthread_spin_trylock, pthread_spin_trylock) - - -int -__pthread_spin_unlock (pthread_spinlock_t *lock) -{ - __asm__ __volatile__ - ("\t\t\t# spin_unlock\n\t" - "sw $0,%0" - : "=m" (*lock) - : - : "memory"); - return 0; -} -weak_alias (__pthread_spin_unlock, pthread_spin_unlock) - - -int -__pthread_spin_init (pthread_spinlock_t *lock, int pshared) -{ - /* We can ignore the `pshared' parameter. Since we are busy-waiting - all processes which can access the memory location `lock' points - to can use the spinlock. */ - *lock = 0; - return 0; -} -weak_alias (__pthread_spin_init, pthread_spin_init) - - -int -__pthread_spin_destroy (pthread_spinlock_t *lock) -{ - /* Nothing to do. */ - return 0; -} -weak_alias (__pthread_spin_destroy, pthread_spin_destroy) |