diff options
Diffstat (limited to 'linuxthreads/sysdeps/m68k/pspinlock.c')
-rw-r--r-- | linuxthreads/sysdeps/m68k/pspinlock.c | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/linuxthreads/sysdeps/m68k/pspinlock.c b/linuxthreads/sysdeps/m68k/pspinlock.c deleted file mode 100644 index 30b9b9e8b9..0000000000 --- a/linuxthreads/sysdeps/m68k/pspinlock.c +++ /dev/null @@ -1,82 +0,0 @@ -/* POSIX spinlock implementation. M68k version. - Copyright (C) 2000 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, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <errno.h> -#include <pthread.h> -#include "internals.h" - - -int -__pthread_spin_lock (pthread_spinlock_t *lock) -{ - unsigned int val; - - do - asm volatile ("tas %1; sne %0" - : "=dm" (val), "=m" (*lock) - : "m" (*lock) - : "cc"); - while (val); - - return 0; -} -weak_alias (__pthread_spin_lock, pthread_spin_lock) - - -int -__pthread_spin_trylock (pthread_spinlock_t *lock) -{ - unsigned int val; - - asm volatile ("tas %1; sne %0" - : "=dm" (val), "=m" (*lock) - : "m" (*lock) - : "cc"); - - return val ? EBUSY : 0; -} -weak_alias (__pthread_spin_trylock, pthread_spin_trylock) - - -int -__pthread_spin_unlock (pthread_spinlock_t *lock) -{ - return *lock = 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. */ - return *lock = 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) |