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-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h282
1 files changed, 0 insertions, 282 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h b/libpthread/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h
deleted file mode 100644
index f4ed98a50..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h
+++ /dev/null
@@ -1,282 +0,0 @@
-/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
-
- 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. */
-
-#ifndef _LOWLEVELLOCK_H
-#define _LOWLEVELLOCK_H 1
-
-#include <time.h>
-#include <sys/param.h>
-#include <bits/pthreadtypes.h>
-#include <atomic.h>
-
-#define SYS_futex 238
-#define FUTEX_WAIT 0
-#define FUTEX_WAKE 1
-#define FUTEX_REQUEUE 3
-#define FUTEX_CMP_REQUEUE 4
-
-/* Initializer for compatibility lock. */
-#define LLL_MUTEX_LOCK_INITIALIZER (0)
-
-#define lll_futex_wait(futex, val) \
- ({ \
- register unsigned long int __r2 asm ("2") = (unsigned long int) (futex); \
- register unsigned long int __r3 asm ("3") = FUTEX_WAIT; \
- register unsigned long int __r4 asm ("4") = (unsigned long int) (val); \
- register unsigned long int __r5 asm ("5") = 0ul; \
- register unsigned long __result asm ("2"); \
- \
- __asm __volatile ("svc %b1" \
- : "=d" (__result) \
- : "i" (SYS_futex), "0" (__r2), "d" (__r3), \
- "d" (__r4), "d" (__r5) \
- : "cc", "memory" ); \
- __result; \
- })
-
-
-#define lll_futex_timed_wait(futex, val, timespec) \
- ({ \
- register unsigned long int __r2 asm ("2") = (unsigned long int) (futex); \
- register unsigned long int __r3 asm ("3") = FUTEX_WAIT; \
- register unsigned long int __r4 asm ("4") = (unsigned long int) (val); \
- register unsigned long int __r5 asm ("5") = (unsigned long int)(timespec);\
- register unsigned long int __result asm ("2"); \
- \
- __asm __volatile ("svc %b1" \
- : "=d" (__result) \
- : "i" (SYS_futex), "0" (__r2), "d" (__r3), \
- "d" (__r4), "d" (__r5) \
- : "cc", "memory" ); \
- __result; \
- })
-
-
-#define lll_futex_wake(futex, nr) \
- ({ \
- register unsigned long int __r2 asm ("2") = (unsigned long int) (futex); \
- register unsigned long int __r3 asm ("3") = FUTEX_WAKE; \
- register unsigned long int __r4 asm ("4") = (unsigned long int) (nr); \
- register unsigned long int __result asm ("2"); \
- \
- __asm __volatile ("svc %b1" \
- : "=d" (__result) \
- : "i" (SYS_futex), "0" (__r2), "d" (__r3), "d" (__r4) \
- : "cc", "memory" ); \
- __result; \
- })
-
-
-/* Returns non-zero if error happened, zero if success. */
-#define lll_futex_requeue(futex, nr_wake, nr_move, mutex, val) \
- ({ \
- register unsigned long int __r2 asm ("2") = (unsigned long int) (futex); \
- register unsigned long int __r3 asm ("3") = FUTEX_CMP_REQUEUE; \
- register unsigned long int __r4 asm ("4") = (long int) (nr_wake); \
- register unsigned long int __r5 asm ("5") = (long int) (nr_move); \
- register unsigned long int __r6 asm ("6") = (unsigned long int) (mutex); \
- register unsigned long int __r7 asm ("7") = (int) (val); \
- register unsigned long __result asm ("2"); \
- \
- __asm __volatile ("svc %b1" \
- : "=d" (__result) \
- : "i" (SYS_futex), "0" (__r2), "d" (__r3), \
- "d" (__r4), "d" (__r5), "d" (__r6), "d" (__r7) \
- : "cc", "memory" ); \
- __result > -4096UL; \
- })
-
-
-#define lll_compare_and_swap(futex, oldval, newval, operation) \
- do { \
- __typeof (futex) __futex = (futex); \
- __asm __volatile (" l %1,%0\n" \
- "0: " operation "\n" \
- " cs %1,%2,%0\n" \
- " jl 0b\n" \
- "1:" \
- : "=Q" (*__futex), "=&d" (oldval), "=&d" (newval) \
- : "m" (*__futex) : "cc", "memory" ); \
- } while (0)
-
-
-static inline int
-__attribute__ ((always_inline))
-__lll_mutex_trylock (int *futex)
-{
- unsigned int old;
-
- __asm __volatile ("cs %0,%3,%1"
- : "=d" (old), "=Q" (*futex)
- : "0" (0), "d" (1), "m" (*futex) : "cc", "memory" );
- return old != 0;
-}
-#define lll_mutex_trylock(futex) __lll_mutex_trylock (&(futex))
-
-
-static inline int
-__attribute__ ((always_inline))
-__lll_mutex_cond_trylock (int *futex)
-{
- unsigned int old;
-
- __asm __volatile ("cs %0,%3,%1"
- : "=d" (old), "=Q" (*futex)
- : "0" (0), "d" (2), "m" (*futex) : "cc", "memory" );
- return old != 0;
-}
-#define lll_mutex_cond_trylock(futex) __lll_mutex_cond_trylock (&(futex))
-
-
-extern void __lll_lock_wait (int *futex) attribute_hidden;
-
-static inline void
-__attribute__ ((always_inline))
-__lll_mutex_lock (int *futex)
-{
- if (atomic_compare_and_exchange_bool_acq (futex, 1, 0) != 0)
- __lll_lock_wait (futex);
-}
-#define lll_mutex_lock(futex) __lll_mutex_lock (&(futex))
-
-static inline void
-__attribute__ ((always_inline))
-__lll_mutex_cond_lock (int *futex)
-{
- if (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0)
- __lll_lock_wait (futex);
-}
-#define lll_mutex_cond_lock(futex) __lll_mutex_cond_lock (&(futex))
-
-extern int __lll_timedlock_wait
- (int *futex, const struct timespec *) attribute_hidden;
-
-static inline int
-__attribute__ ((always_inline))
-__lll_mutex_timedlock (int *futex, const struct timespec *abstime)
-{
- int result = 0;
- if (atomic_compare_and_exchange_bool_acq (futex, 1, 0) != 0)
- result = __lll_timedlock_wait (futex, abstime);
- return result;
-}
-#define lll_mutex_timedlock(futex, abstime) \
- __lll_mutex_timedlock (&(futex), abstime)
-
-
-static inline void
-__attribute__ ((always_inline))
-__lll_mutex_unlock (int *futex)
-{
- int oldval;
- int newval = 0;
-
- lll_compare_and_swap (futex, oldval, newval, "slr %2,%2");
- if (oldval > 1)
- lll_futex_wake (futex, 1);
-}
-#define lll_mutex_unlock(futex) \
- __lll_mutex_unlock(&(futex))
-
-
-static inline void
-__attribute__ ((always_inline))
-__lll_mutex_unlock_force (int *futex)
-{
- *futex = 0;
- lll_futex_wake (futex, 1);
-}
-#define lll_mutex_unlock_force(futex) \
- __lll_mutex_unlock_force(&(futex))
-
-#define lll_mutex_islocked(futex) \
- (futex != 0)
-
-
-/* We have a separate internal lock implementation which is not tied
- to binary compatibility. We can use the lll_mutex_*. */
-
-/* Type for lock object. */
-typedef int lll_lock_t;
-
-/* Initializers for lock. */
-#define LLL_LOCK_INITIALIZER (0)
-#define LLL_LOCK_INITIALIZER_LOCKED (1)
-
-#define lll_trylock(futex) lll_mutex_trylock (futex)
-#define lll_lock(futex) lll_mutex_lock (futex)
-#define lll_unlock(futex) lll_mutex_unlock (futex)
-#define lll_islocked(futex) lll_mutex_islocked (futex)
-
-extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
-
-/* The states of a lock are:
- 1 - untaken
- 0 - taken by one user
- <0 - taken by more users */
-
-
-/* The kernel notifies a process with uses CLONE_CLEARTID via futex
- wakeup when the clone terminates. The memory location contains the
- thread ID while the clone is running and is reset to zero
- afterwards. */
-static inline void
-__attribute__ ((always_inline))
-__lll_wait_tid (int *ptid)
-{
- int tid;
-
- while ((tid = *ptid) != 0)
- lll_futex_wait (ptid, tid);
-}
-#define lll_wait_tid(tid) __lll_wait_tid(&(tid))
-
-extern int __lll_timedwait_tid (int *, const struct timespec *)
- attribute_hidden;
-
-#define lll_timedwait_tid(tid, abstime) \
- ({ \
- int __res = 0; \
- if ((tid) != 0) \
- __res = __lll_timedwait_tid (&(tid), (abstime)); \
- __res; \
- })
-
-/* Conditional variable handling. */
-
-extern void __lll_cond_wait (pthread_cond_t *cond)
- attribute_hidden;
-extern int __lll_cond_timedwait (pthread_cond_t *cond,
- const struct timespec *abstime)
- attribute_hidden;
-extern void __lll_cond_wake (pthread_cond_t *cond)
- attribute_hidden;
-extern void __lll_cond_broadcast (pthread_cond_t *cond)
- attribute_hidden;
-
-#define lll_cond_wait(cond) \
- __lll_cond_wait (cond)
-#define lll_cond_timedwait(cond, abstime) \
- __lll_cond_timedwait (cond, abstime)
-#define lll_cond_wake(cond) \
- __lll_cond_wake (cond)
-#define lll_cond_broadcast(cond) \
- __lll_cond_broadcast (cond)
-
-#endif /* lowlevellock.h */
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