diff options
Diffstat (limited to 'extras/mini-os/include/ia64/arch_spinlock.h')
| -rw-r--r-- | extras/mini-os/include/ia64/arch_spinlock.h | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/extras/mini-os/include/ia64/arch_spinlock.h b/extras/mini-os/include/ia64/arch_spinlock.h deleted file mode 100644 index 60712b54c9..0000000000 --- a/extras/mini-os/include/ia64/arch_spinlock.h +++ /dev/null @@ -1,61 +0,0 @@ -/* - * Done by Dietmar Hahn <dietmar.hahn@fujitsu-siemens.com - * The file contains ia64 special spinlock stuff. - * - **************************************************************************** - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to - * deal in the Software without restriction, including without limitation the - * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - -#ifndef _ARCH_SPINLOCK_H_ -#define _ARCH_SPINLOCK_H_ - -#include "atomic.h" - -#define ARCH_SPIN_LOCK_UNLOCKED { 0 } - -#define SPIN_LOCK_UNUSED 0 -#define SPIN_LOCK_USED 1 - - -static inline void -_raw_spin_lock(spinlock_t* lck) -{ - uint32_t ret; - do { - ret = ia64_cmpxchg_acq_32(&(lck->slock), - SPIN_LOCK_UNUSED, SPIN_LOCK_USED); - } while (ret == SPIN_LOCK_USED); -} - -static inline void -_raw_spin_unlock(spinlock_t *lck) -{ - asm volatile ("st4.rel.nta [%0] = r0\n\t" :: "r"(&(lck->slock)) - : "memory" ); -} - -static inline uint32_t -_raw_spin_trylock(spinlock_t* lck) -{ - uint32_t ret; - ret = ia64_cmpxchg_acq_32(&(lck->slock), SPIN_LOCK_USED, SPIN_LOCK_USED); - return (ret == SPIN_LOCK_USED); -} - -#endif /* _ARCH_SPINLOCK_H_ */ |