+2003-02-05 Ulrich Drepper <drepper@redhat.com>
+
+ * sysdeps/pthread/bits/libc-lock.h (__libc_once): Set control
+ variable for non-libpthread case to the same value the
+ pthread_once function would use.
+
2003-02-03 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S (__vfork): If
__pthread_once (&(ONCE_CONTROL), (INIT_FUNCTION)); \
else if ((ONCE_CONTROL) == PTHREAD_ONCE_INIT) { \
INIT_FUNCTION (); \
- (ONCE_CONTROL) = !PTHREAD_ONCE_INIT; \
+ (ONCE_CONTROL) = 2; \
} \
} while (0)
+2003-02-04 Martin Schwidefsky <schwidefsky@de.ibm.com>
+
+ * sysdeps/unix/sysv/linux/s390/fork.c: Correct order of parameters.
+
+2003-01-31 Martin Schwidefsky <schwidefsky@de.ibm.com>
+
+ * init.c (__NR_set_tid_address): Add #ifdef for s390.
+ * sysdeps/pthread/pthread_barrier_wait.c: New file.
+ * sysdeps/pthread/pthread_cond_broadcast.c: New file.
+ * sysdeps/pthread/pthread_cond_signal.c: New file.
+ * sysdeps/pthread/pthread_cond_timedwait.c: New file.
+ * sysdeps/pthread/pthread_cond_wait.c: New file.
+ * sysdeps/pthread/pthread_rwlock_rdlock.c: New file.
+ * sysdeps/pthread/pthread_rwlock_timedrdlock.c: New file.
+ * sysdeps/pthread/pthread_rwlock_timedwrlock.c: New file.
+ * sysdeps/pthread/pthread_rwlock_unlock.c: New file.
+ * sysdeps/pthread/pthread_rwlock_wrlock.c: New file.
+ * sysdeps/s390/Makefile: New file.
+ * sysdeps/s390/bits/atomic.h: New file.
+ * sysdeps/s390/pthread_spin_init.c: New file.
+ * sysdeps/s390/pthread_spin_lock.c: New file.
+ * sysdeps/s390/pthread_spin_trylock.c: New file.
+ * sysdeps/s390/pthread_spin_unlock.c: New file.
+ * sysdeps/s390/pthreaddef.h: New file.
+ * sysdeps/s390/tcb-offsets.sym: New file.
+ * sysdeps/s390/td_ta_map_lwp2thr.c: New file.
+ * sysdeps/s390/tls.h: New file.
+ * sysdeps/unix/sysv/linux/s390/bits/pthreadtypes.h: New file.
+ * sysdeps/unix/sysv/linux/s390/bits/semaphore.h: New file.
+ * sysdeps/unix/sysv/linux/s390/createthread.c: New file.
+ * sysdeps/unix/sysv/linux/s390/dl-sysdep.h: New file.
+ * sysdeps/unix/sysv/linux/s390/fork.c: New file.
+ * sysdeps/unix/sysv/linux/s390/jmp-unwind.c: New file.
+ * sysdeps/unix/sysv/linux/s390/libc-lowlevellock.c: New file.
+ * sysdeps/unix/sysv/linux/s390/libc-lowlevelmutex.c: New file.
+ * sysdeps/unix/sysv/linux/s390/lowlevellock.c: New file.
+ * sysdeps/unix/sysv/linux/s390/lowlevellock.h: New file.
+ * sysdeps/unix/sysv/linux/s390/lowlevelmutex.c: New file.
+ * sysdeps/unix/sysv/linux/s390/lowlevelsem.h: New file.
+ * sysdeps/unix/sysv/linux/s390/pthread_once.c: New file.
+ * sysdeps/unix/sysv/linux/s390/s390-32/pt-initfini.c: New file.
+ * sysdeps/unix/sysv/linux/s390/s390-32/pt-vfork.S: New file.
+ * sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h: New file.
+ * sysdeps/unix/sysv/linux/s390/s390-64/pt-initfini.c: New file.
+ * sysdeps/unix/sysv/linux/s390/s390-64/pt-vfork.S: New file.
+ * sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h: New file.
+ * sysdeps/unix/sysv/linux/s390/sem_post.c: New file.
+ * sysdeps/unix/sysv/linux/s390/sem_timedwait.c: New file.
+ * sysdeps/unix/sysv/linux/s390/libc-lowlevellock.c: New file.
+ * sysdeps/unix/sysv/linux/s390/sem_wait.c: New file.
+
2003-02-04 Ulrich Drepper <drepper@redhat.com>
* atomic.h: Add a couple more default implementations.
{
struct pthread *curr;
- curr = list_entry(entry, struct pthread, header.data.list);
+ curr = list_entry (entry, struct pthread, header.data.list);
if (FREE_P (curr))
{
/* Unlink the block. */
#include <shlib-compat.h>
-/* XXX For the time being... */
-#define __NR_set_tid_address 258
+/* XXX For the time being... Once we can rely on the kernel headers
+ having the definition remove these lines. */
+#if defined __s390__
+# define __NR_set_tid_address 252
+#else
+# define __NR_set_tid_address 258
+#endif
/* Default stack size. */
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <pthreadP.h>
+
+
+/* Wait on barrier. */
+int
+pthread_barrier_wait (barrier)
+ pthread_barrier_t *barrier;
+{
+ struct pthread_barrier *ibarrier = (struct pthread_barrier *) barrier;
+
+ /* Make sure we are alone. */
+ lll_lock (ibarrier->lock);
+
+ /* One more arrival. */
+ --ibarrier->left;
+
+ /* Are these all? */
+ if (ibarrier->left == 0)
+ {
+ /* Yes. Restore the barrier to be empty. */
+ ibarrier->left = ibarrier->init_count;
+
+ /* Increment the event counter to avoid invalid wake-ups and
+ tell the current waiters that it is their turn. */
+ ++ibarrier->curr_event;
+
+ /* Wake up everybody. */
+ lll_futex_wake (&ibarrier->curr_event, INT_MAX);
+
+ /* The barrier is open for business again. */
+ lll_unlock (ibarrier->lock);
+
+ /* This is the thread which finished the serialization. */
+ return PTHREAD_BARRIER_SERIAL_THREAD;
+ }
+
+ /* The number of the event we are waiting for. The barrier's event
+ number must be bumped before we continue. */
+ unsigned int event = ibarrier->curr_event;
+ do
+ {
+ /* Before suspending, make the barrier available to others. */
+ lll_unlock (ibarrier->lock);
+
+ /* Wait for the event counter of the barrier to change. */
+ lll_futex_wait (&ibarrier->curr_event, event);
+
+ /* We are going to access shared data. */
+ lll_lock (ibarrier->lock);
+ }
+ while (event == ibarrier->curr_event);
+
+ /* We are done, let others use the barrier. */
+ lll_unlock (ibarrier->lock);
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <endian.h>
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <pthread.h>
+#include <pthreadP.h>
+
+#include <shlib-compat.h>
+
+
+int
+__pthread_cond_broadcast (cond)
+ pthread_cond_t *cond;
+{
+ /* Make sure we are alone. */
+ lll_mutex_lock (cond->__data.__lock);
+
+ /* Are there any waiters to be woken? */
+ if (cond->__data.__total_seq > cond->__data.__wakeup_seq)
+ {
+ /* Yes. Mark them all as woken. */
+ cond->__data.__wakeup_seq = cond->__data.__total_seq;
+
+ /* The futex syscall operates on a 32-bit word. That is fine,
+ we just use the low 32 bits of the sequence counter. */
+#if BYTE_ORDER == LITTLE_ENDIAN
+ int *futex = ((int *) (&cond->__data.__wakeup_seq));
+#elif BYTE_ORDER == BIG_ENDIAN
+ int *futex = ((int *) (&cond->__data.__wakeup_seq)) + 1;
+#else
+# error "No valid byte order"
+#endif
+
+ /* Wake everybody. */
+ lll_futex_wake (futex, INT_MAX);
+ }
+
+ /* We are done. */
+ lll_mutex_unlock (cond->__data.__lock);
+
+ return 0;
+}
+
+versioned_symbol (libpthread, __pthread_cond_broadcast, pthread_cond_broadcast,
+ GLIBC_2_3_2);
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <endian.h>
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <pthread.h>
+#include <pthreadP.h>
+
+#include <shlib-compat.h>
+
+int
+__pthread_cond_signal (cond)
+ pthread_cond_t *cond;
+{
+ /* Make sure we are alone. */
+ lll_mutex_lock(cond->__data.__lock);
+
+ /* Are there any waiters to be woken? */
+ if (cond->__data.__total_seq > cond->__data.__wakeup_seq)
+ {
+ /* Yes. Mark one of them as woken. */
+ ++cond->__data.__wakeup_seq;
+
+ /* The futex syscall operates on a 32-bit word. That is fine,
+ we just use the low 32 bits of the sequence counter. */
+#if BYTE_ORDER == LITTLE_ENDIAN
+ int *futex = ((int *) (&cond->__data.__wakeup_seq));
+#elif BYTE_ORDER == BIG_ENDIAN
+ int *futex = ((int *) (&cond->__data.__wakeup_seq)) + 1;
+#else
+# error "No valid byte order"
+#endif
+
+ /* Wake one. */
+ lll_futex_wake (futex, 1);
+ }
+
+ /* We are done. */
+ lll_mutex_unlock (cond->__data.__lock);
+
+ return 0;
+}
+
+versioned_symbol (libpthread, __pthread_cond_signal, pthread_cond_signal,
+ GLIBC_2_3_2);
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <endian.h>
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <pthread.h>
+#include <pthreadP.h>
+
+#include <shlib-compat.h>
+
+
+/* Cleanup handler, defined in pthread_cond_wait.c. */
+extern void __condvar_cleanup (void *arg)
+ __attribute__ ((visibility ("hidden")));
+
+
+int
+__pthread_cond_timedwait (cond, mutex, abstime)
+ pthread_cond_t *cond;
+ pthread_mutex_t *mutex;
+ const struct timespec *abstime;
+{
+ struct _pthread_cleanup_buffer buffer;
+ int result = 0;
+
+ /* Catch invalid parameters. */
+ if (abstime->tv_nsec >= 1000000000)
+ return EINVAL;
+
+ /* Make sure we are along. */
+ lll_mutex_lock (cond->__data.__lock);
+
+ /* Now we can release the mutex. */
+ __pthread_mutex_unlock_internal (mutex);
+
+ /* We have one new user of the condvar. */
+ ++cond->__data.__total_seq;
+
+ /* Before we block we enable cancellation. Therefore we have to
+ install a cancellation handler. */
+ __pthread_cleanup_push (&buffer, __condvar_cleanup, cond);
+
+ /* The current values of the wakeup counter. The "woken" counter
+ must exceed this value. */
+ unsigned long long int val;
+ unsigned long long int seq;
+ val = seq = cond->__data.__wakeup_seq;
+
+ /* The futex syscall operates on a 32-bit word. That is fine, we
+ just use the low 32 bits of the sequence counter. */
+#if BYTE_ORDER == LITTLE_ENDIAN
+ int *futex = ((int *) (&cond->__data.__wakeup_seq));
+#elif BYTE_ORDER == BIG_ENDIAN
+ int *futex = ((int *) (&cond->__data.__wakeup_seq)) + 1;
+#else
+# error "No valid byte order"
+#endif
+
+ while (1)
+ {
+ /* Get the current time. So far we support only one clock. */
+ struct timeval tv;
+ (void) gettimeofday (&tv, NULL);
+
+ /* Convert the absolute timeout value to a relative timeout. */
+ struct timespec rt;
+ rt.tv_sec = abstime->tv_sec - tv.tv_sec;
+ rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
+ if (rt.tv_nsec < 0)
+ {
+ rt.tv_nsec += 1000000000;
+ --rt.tv_sec;
+ }
+ /* Did we already time out? */
+ if (rt.tv_sec < 0)
+ {
+ /* Yep. Adjust the sequence counter. */
+ ++cond->__data.__wakeup_seq;
+
+ /* The error value. */
+ result = ETIMEDOUT;
+ break;
+ }
+
+ /* Prepare to wait. Release the condvar futex. */
+ lll_mutex_unlock (cond->__data.__lock);
+
+ /* Enable asynchronous cancellation. Required by the standard. */
+ int oldtype = __pthread_enable_asynccancel ();
+
+ /* Wait until woken by signal or broadcast. Note that we
+ truncate the 'val' value to 32 bits. */
+ result = lll_futex_timed_wait (futex, (unsigned int) val, &rt);
+
+ /* Disable asynchronous cancellation. */
+ __pthread_disable_asynccancel (oldtype);
+
+ /* We are going to look at shared data again, so get the lock. */
+ lll_mutex_lock(cond->__data.__lock);
+
+ /* Check whether we are eligible for wakeup. */
+ val = cond->__data.__wakeup_seq;
+ if (cond->__data.__woken_seq >= seq
+ && cond->__data.__woken_seq < val)
+ break;
+
+ /* Not woken yet. Maybe the time expired? */
+ if (result == -ETIMEDOUT)
+ {
+ /* Yep. Adjust the counters. */
+ ++cond->__data.__wakeup_seq;
+
+ /* The error value. */
+ result = ETIMEDOUT;
+ break;
+ }
+ }
+
+ /* Another thread woken up. */
+ ++cond->__data.__woken_seq;
+
+ /* We are done with the condvar. */
+ lll_mutex_unlock (cond->__data.__lock);
+
+ /* The cancellation handling is back to normal, remove the handler. */
+ __pthread_cleanup_pop (&buffer, 0);
+
+ /* Get the mutex before returning. */
+ __pthread_mutex_lock_internal (mutex);
+
+ return result;
+}
+
+versioned_symbol (libpthread, __pthread_cond_timedwait, pthread_cond_timedwait,
+ GLIBC_2_3_2);
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <endian.h>
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <pthread.h>
+#include <pthreadP.h>
+
+#include <shlib-compat.h>
+
+
+void
+__attribute__ ((visibility ("hidden")))
+__condvar_cleanup (void *arg)
+{
+ pthread_cond_t *cond = (pthread_cond_t *) arg;
+
+ /* We are going to modify shared data. */
+ lll_mutex_lock (cond->__data.__lock);
+
+ /* This thread is not waiting anymore. Adjust the sequence counters
+ appropriately. */
+ ++cond->__data.__wakeup_seq;
+ ++cond->__data.__woken_seq;
+
+ /* We are done. */
+ lll_mutex_unlock (cond->__data.__lock);
+}
+
+
+int
+__pthread_cond_wait (cond, mutex)
+ pthread_cond_t *cond;
+ pthread_mutex_t *mutex;
+{
+ struct _pthread_cleanup_buffer buffer;
+
+ /* Make sure we are along. */
+ lll_mutex_lock (cond->__data.__lock);
+
+ /* Now we can release the mutex. */
+ __pthread_mutex_unlock_internal (mutex);
+
+ /* We have one new user of the condvar. */
+ ++cond->__data.__total_seq;
+
+ /* Before we block we enable cancellation. Therefore we have to
+ install a cancellation handler. */
+ __pthread_cleanup_push (&buffer, __condvar_cleanup, cond);
+
+ /* The current values of the wakeup counter. The "woken" counter
+ must exceed this value. */
+ unsigned long long int val;
+ unsigned long long int seq;
+ val = seq = cond->__data.__wakeup_seq;
+
+ /* The futex syscall operates on a 32-bit word. That is fine, we
+ just use the low 32 bits of the sequence counter. */
+#if BYTE_ORDER == LITTLE_ENDIAN
+ int *futex = ((int *) (&cond->__data.__wakeup_seq));
+#elif BYTE_ORDER == BIG_ENDIAN
+ int *futex = ((int *) (&cond->__data.__wakeup_seq)) + 1;
+#else
+# error "No valid byte order"
+#endif
+
+ while (1)
+ {
+ /* Prepare to wait. Release the condvar futex. */
+ lll_mutex_unlock (cond->__data.__lock);
+
+ /* Enable asynchronous cancellation. Required by the standard. */
+ int oldtype = __pthread_enable_asynccancel ();
+
+ /* Wait until woken by signal or broadcast. Note that we
+ truncate the 'val' value to 32 bits. */
+ lll_futex_wait (futex, (unsigned int) val);
+
+ /* Disable asynchronous cancellation. */
+ __pthread_disable_asynccancel (oldtype);
+
+ /* We are going to look at shared data again, so get the lock. */
+ lll_mutex_lock(cond->__data.__lock);
+
+ /* Check whether we are eligible for wakeup. */
+ val = cond->__data.__wakeup_seq;
+ if (cond->__data.__woken_seq >= seq
+ && cond->__data.__woken_seq < val)
+ break;
+ }
+
+ /* Another thread woken up. */
+ ++cond->__data.__woken_seq;
+
+ /* We are done with the condvar. */
+ lll_mutex_unlock (cond->__data.__lock);
+
+ /* The cancellation handling is back to normal, remove the handler. */
+ __pthread_cleanup_pop (&buffer, 0);
+
+ /* Get the mutex before returning. */
+ __pthread_mutex_lock_internal (mutex);
+
+ return 0;
+}
+
+versioned_symbol (libpthread, __pthread_cond_wait, pthread_cond_wait,
+ GLIBC_2_3_2);
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <pthread.h>
+#include <pthreadP.h>
+
+
+/* Acquire read lock for RWLOCK. */
+int
+__pthread_rwlock_rdlock (rwlock)
+ pthread_rwlock_t *rwlock;
+{
+ int result = 0;
+
+ /* Make sure we are along. */
+ lll_mutex_lock (rwlock->__data.__lock);
+
+ while (1)
+ {
+ /* Get the rwlock if there is no writer... */
+ if (rwlock->__data.__writer == 0
+ /* ...and if either no writer is waiting or we prefer readers. */
+ && (!rwlock->__data.__nr_writers_queued
+ || rwlock->__data.__flags == 0))
+ {
+ /* Increment the reader counter. Avoid overflow. */
+ if (__builtin_expect (++rwlock->__data.__nr_readers == 0, 0))
+ {
+ /* Overflow on number of readers. */
+ --rwlock->__data.__nr_readers;
+ result = EAGAIN;
+ }
+
+ break;
+ }
+
+ /* Make sure we are not holding the rwlock as a writer. This is
+ a deadlock situation we recognize and report. */
+ if (rwlock->__data.__writer != 0
+ && __builtin_expect (rwlock->__data.__writer
+ == (pthread_t) THREAD_SELF, 0))
+ {
+ result = EDEADLK;
+ break;
+ }
+
+ /* Remember that we are a reader. */
+ if (__builtin_expect (++rwlock->__data.__nr_readers_queued == 0, 0))
+ {
+ /* Overflow on number of queued readers. */
+ --rwlock->__data.__nr_readers_queued;
+ result = EAGAIN;
+ break;
+ }
+
+ /* Free the lock. */
+ lll_mutex_unlock (rwlock->__data.__lock);
+
+ /* Wait for the writer to finish. */
+ lll_futex_wait (&rwlock->__data.__readers_wakeup, 0);
+
+ /* Get the lock. */
+ lll_mutex_lock (rwlock->__data.__lock);
+
+ /* To start over again, remove the thread from the reader list. */
+ if (--rwlock->__data.__nr_readers_queued == 0)
+ rwlock->__data.__readers_wakeup = 0;
+ }
+
+ /* We are done, free the lock. */
+ lll_mutex_unlock (rwlock->__data.__lock);
+
+ return result;
+}
+
+weak_alias (__pthread_rwlock_rdlock, pthread_rwlock_rdlock)
+strong_alias (__pthread_rwlock_rdlock, __pthread_rwlock_rdlock_internal)
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <pthread.h>
+#include <pthreadP.h>
+
+
+/* Try to acquire read lock for RWLOCK or return after specfied time. */
+int
+pthread_rwlock_timedrdlock (rwlock, abstime)
+ pthread_rwlock_t *rwlock;
+ const struct timespec *abstime;
+{
+ int result = 0;
+
+ /* Make sure we are along. */
+ lll_mutex_lock(rwlock->__data.__lock);
+
+ while (1)
+ {
+ /* Get the rwlock if there is no writer... */
+ if (rwlock->__data.__writer == 0
+ /* ...and if either no writer is waiting or we prefer readers. */
+ && (!rwlock->__data.__nr_writers_queued
+ || rwlock->__data.__flags == 0))
+ {
+ /* Increment the reader counter. Avoid overflow. */
+ if (++rwlock->__data.__nr_readers == 0)
+ {
+ /* Overflow on number of readers. */
+ --rwlock->__data.__nr_readers;
+ result = EAGAIN;
+ }
+
+ break;
+ }
+
+ /* Make sure we are not holding the rwlock as a writer. This is
+ a deadlock situation we recognize and report. */
+ if (rwlock->__data.__writer != 0
+ && __builtin_expect (rwlock->__data.__writer
+ == (pthread_t) THREAD_SELF, 0))
+ {
+ result = EDEADLK;
+ break;
+ }
+
+ /* Make sure the passed in timeout value is valid. Ideally this
+ test would be executed once. But since it must not be
+ performed if we would not block at all simply moving the test
+ to the front is no option. Replicating all the code is
+ costly while this test is not. */
+ if (__builtin_expect (abstime->tv_nsec >= 1000000000, 0))
+ {
+ result = EINVAL;
+ break;
+ }
+
+ /* Get the current time. So far we support only one clock. */
+ struct timeval tv;
+ (void) gettimeofday (&tv, NULL);
+
+ /* Convert the absolute timeout value to a relative timeout. */
+ struct timespec rt;
+ rt.tv_sec = abstime->tv_sec - tv.tv_sec;
+ rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
+ if (rt.tv_nsec < 0)
+ {
+ rt.tv_nsec += 1000000000;
+ --rt.tv_sec;
+ }
+ /* Did we already time out? */
+ if (rt.tv_sec < 0)
+ {
+ /* Yep, return with an appropriate error. */
+ result = ETIMEDOUT;
+ break;
+ }
+
+ /* Remember that we are a reader. */
+ if (++rwlock->__data.__nr_readers_queued == 0)
+ {
+ /* Overflow on number of queued readers. */
+ --rwlock->__data.__nr_readers_queued;
+ result = EAGAIN;
+ break;
+ }
+
+ /* Free the lock. */
+ lll_mutex_unlock (rwlock->__data.__lock);
+
+ /* Wait for the writer to finish. */
+ result = lll_futex_timed_wait (&rwlock->__data.__readers_wakeup, 0, &rt);
+
+ /* Get the lock. */
+ lll_mutex_lock (rwlock->__data.__lock);
+
+ /* To start over again, remove the thread from the reader list. */
+ if (--rwlock->__data.__nr_readers_queued == 0)
+ rwlock->__data.__readers_wakeup = 0;
+
+ /* Did the futex call time out? */
+ if (result == -ETIMEDOUT)
+ {
+ /* Yep, report it. */
+ result = ETIMEDOUT;
+ break;
+ }
+ }
+
+ /* We are done, free the lock. */
+ lll_mutex_unlock (rwlock->__data.__lock);
+
+ return result;
+}
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <pthread.h>
+#include <pthreadP.h>
+
+
+/* Try to acquire write lock for RWLOCK or return after specfied time. */
+int
+pthread_rwlock_timedwrlock (rwlock, abstime)
+ pthread_rwlock_t *rwlock;
+ const struct timespec *abstime;
+{
+ int result = 0;
+
+ /* Make sure we are along. */
+ lll_mutex_lock (rwlock->__data.__lock);
+
+ while (1)
+ {
+ /* Get the rwlock if there is no writer and no reader. */
+ if (rwlock->__data.__writer == 0 && rwlock->__data.__nr_readers == 0)
+ {
+ /* Mark self as writer. */
+ rwlock->__data.__writer = (pthread_t) THREAD_SELF;
+ break;
+ }
+
+ /* Make sure we are not holding the rwlock as a writer. This is
+ a deadlock situation we recognize and report. */
+ if (rwlock->__data.__writer != 0
+ && __builtin_expect (rwlock->__data.__writer
+ == (pthread_t) THREAD_SELF, 0))
+ {
+ result = EDEADLK;
+ break;
+ }
+
+ /* Make sure the passed in timeout value is valid. Ideally this
+ test would be executed once. But since it must not be
+ performed if we would not block at all simply moving the test
+ to the front is no option. Replicating all the code is
+ costly while this test is not. */
+ if (abstime->tv_nsec >= 1000000000)
+ {
+ result = EINVAL;
+ break;
+ }
+
+ /* Get the current time. So far we support only one clock. */
+ struct timeval tv;
+ (void) gettimeofday (&tv, NULL);
+
+ /* Convert the absolute timeout value to a relative timeout. */
+ struct timespec rt;
+ rt.tv_sec = abstime->tv_sec - tv.tv_sec;
+ rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
+ if (rt.tv_nsec < 0)
+ {
+ rt.tv_nsec += 1000000000;
+ --rt.tv_sec;
+ }
+ /* Did we already time out? */
+ if (rt.tv_sec < 0)
+ {
+ result = ETIMEDOUT;
+ break;
+ }
+
+ /* Remember that we are a writer. */
+ if (++rwlock->__data.__nr_writers_queued == 0)
+ {
+ /* Overflow on number of queued writers. */
+ --rwlock->__data.__nr_writers_queued;
+ result = EAGAIN;
+ break;
+ }
+
+ /* Free the lock. */
+ lll_mutex_unlock (rwlock->__data.__lock);
+
+ /* Wait for the writer or reader(s) to finish. */
+ result = lll_futex_timed_wait (&rwlock->__data.__writer_wakeup, 0, &rt);
+
+ /* Get the lock. */
+ lll_mutex_lock (rwlock->__data.__lock);
+
+ /* To start over again, remove the thread from the writer list. */
+ --rwlock->__data.__nr_writers_queued;
+ rwlock->__data.__writer_wakeup = 0;
+
+ /* Did the futex call time out? */
+ if (result == -ETIMEDOUT)
+ {
+ result = ETIMEDOUT;
+ break;
+ }
+ }
+
+ /* We are done, free the lock. */
+ lll_mutex_unlock (rwlock->__data.__lock);
+
+ return result;
+}
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <pthread.h>
+#include <pthreadP.h>
+
+/* Unlock RWLOCK. */
+int __pthread_rwlock_unlock (pthread_rwlock_t *rwlock)
+{
+ lll_mutex_lock(rwlock->__data.__lock);
+ if (rwlock->__data.__writer)
+ rwlock->__data.__writer = 0;
+ else
+ rwlock->__data.__nr_readers--;
+ if (!rwlock->__data.__nr_readers)
+ {
+ if (rwlock->__data.__nr_writers_queued)
+ {
+ rwlock->__data.__writer_wakeup = 1;
+ lll_futex_wake(&rwlock->__data.__writer_wakeup, 1);
+ }
+ else
+ {
+ rwlock->__data.__readers_wakeup = 1;
+ lll_futex_wake(&rwlock->__data.__readers_wakeup, INT_MAX);
+ }
+ }
+ lll_mutex_unlock(rwlock->__data.__lock);
+ return 0;
+}
+
+weak_alias (__pthread_rwlock_unlock, pthread_rwlock_unlock)
+strong_alias (__pthread_rwlock_unlock, __pthread_rwlock_unlock_internal)
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <pthread.h>
+#include <pthreadP.h>
+
+
+/* Acquire write lock for RWLOCK. */
+int
+__pthread_rwlock_wrlock (rwlock)
+ pthread_rwlock_t *rwlock;
+{
+ int result = 0;
+
+ /* Make sure we are along. */
+ lll_mutex_lock (rwlock->__data.__lock);
+
+ while (1)
+ {
+ /* Get the rwlock if there is no writer and no reader. */
+ if (rwlock->__data.__writer == 0 && rwlock->__data.__nr_readers == 0)
+ {
+ /* Mark self as writer. */
+ rwlock->__data.__writer = (pthread_t) THREAD_SELF;
+ break;
+ }
+
+ /* Make sure we are not holding the rwlock as a writer. This is
+ a deadlock situation we recognize and report. */
+ if (rwlock->__data.__writer != 0
+ && __builtin_expect (rwlock->__data.__writer
+ == (pthread_t) THREAD_SELF, 0))
+ {
+ result = EDEADLK;
+ break;
+ }
+
+ /* Remember that we are a writer. */
+ if (++rwlock->__data.__nr_writers_queued == 0)
+ {
+ /* Overflow on number of queued writers. */
+ --rwlock->__data.__nr_writers_queued;
+ result = EAGAIN;
+ break;
+ }
+
+ /* Free the lock. */
+ lll_mutex_unlock (rwlock->__data.__lock);
+
+ /* Wait for the writer or reader(s) to finish. */
+ lll_futex_wait (&rwlock->__data.__writer_wakeup, 0);
+
+ /* Get the lock. */
+ lll_mutex_lock (rwlock->__data.__lock);
+
+ /* To start over again, remove the thread from the writer list. */
+ --rwlock->__data.__nr_writers_queued;
+ rwlock->__data.__writer_wakeup = 0;
+ }
+
+ /* We are done, free the lock. */
+ lll_mutex_unlock (rwlock->__data.__lock);
+
+ return result;
+}
+
+weak_alias (__pthread_rwlock_wrlock, pthread_rwlock_wrlock)
+strong_alias (__pthread_rwlock_wrlock, __pthread_rwlock_wrlock_internal)
--- /dev/null
+# Copyright (C) 2003 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.
+
+ifeq ($(subdir),csu)
+gen-as-const-headers += tcb-offsets.sym
+endif
+
+ifeq ($(subdir),nptl)
+libpthread-routines += ptw-sysdep
+endif
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <stdint.h>
+
+typedef int8_t atomic8_t;
+typedef uint8_t uatomic8_t;
+typedef int_fast8_t atomic_fast8_t;
+typedef uint_fast8_t uatomic_fast8_t;
+
+typedef int16_t atomic16_t;
+typedef uint16_t uatomic16_t;
+typedef int_fast16_t atomic_fast16_t;
+typedef uint_fast16_t uatomic_fast16_t;
+
+typedef int32_t atomic32_t;
+typedef uint32_t uatomic32_t;
+typedef int_fast32_t atomic_fast32_t;
+typedef uint_fast32_t uatomic_fast32_t;
+
+typedef int64_t atomic64_t;
+typedef uint64_t uatomic64_t;
+typedef int_fast64_t atomic_fast64_t;
+typedef uint_fast64_t uatomic_fast64_t;
+
+typedef intptr_t atomicptr_t;
+typedef uintptr_t uatomicptr_t;
+typedef intmax_t atomic_max_t;
+typedef uintmax_t uatomic_max_t;
+
+
+#define __arch_compare_and_exchange_8_acq(mem, newval, oldval) \
+ (abort (), 0)
+
+#define __arch_compare_and_exchange_16_acq(mem, newval, oldval) \
+ (abort (), 0)
+
+#define __arch_compare_and_exchange_32_acq(mem, newval, oldval) \
+ ({ unsigned int *__mem = (unsigned int *) (mem); \
+ unsigned int __old = (unsigned int) (oldval); \
+ unsigned int __cmp = __old; \
+ __asm __volatile ("cs %0,%2,%1" \
+ : "+d" (__old), "=Q" (*__mem) \
+ : "d" (newval), "m" (*__mem) : "cc" ); \
+ __cmp != __old; })
+
+#ifdef __s390x__
+# define __arch_compare_and_exchange_64_acq(mem, newval, oldval) \
+ ({ unsigned long int *__mem = (unsigned long int *) (mem); \
+ unsigned long int __old = (unsigned long int) (oldval); \
+ unsigned long int __cmp = __old; \
+ __asm __volatile ("csg %0,%2,%1" \
+ : "+d" (__old), "=Q" (*__mem) \
+ : "d" (newval), "m" (*__mem) : "cc" ); \
+ __cmp != __old; })
+#else
+/* For 31 bit we do not really need 64-bit compare-and-exchange. We can
+ implement them by use of the csd instruction. The straightforward
+ implementation causes warnings so we skip the definition for now. */
+# define __arch_compare_and_exchange_64_acq(mem, newval, oldval) \
+ (abort (), 0)
+#endif
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+/* Not needed. pthread_spin_init is an alias for pthread_spin_unlock. */
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include "pthreadP.h"
+
+int
+pthread_spin_lock (lock)
+ pthread_spinlock_t *lock;
+{
+ unsigned long int oldval;
+
+ __asm __volatile ("0: lhi %0,0\n"
+ " cs %0,%2,%1\n"
+ " jl 0b"
+ : "=d" (oldval), "=Q" (*lock)
+ : "d" (1), "m" (*lock) : "cc" );
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <errno.h>
+#include "pthreadP.h"
+
+int
+pthread_spin_trylock (lock)
+ pthread_spinlock_t *lock;
+{
+ unsigned long int old;
+
+ __asm __volatile ("cs %0,%3,%1"
+ : "=d" (old), "=Q" (*lock)
+ : "0" (0), "d" (1), "m" (*lock) : "cc" );
+
+ return old != 0 ? EBUSY : 0;
+}
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+/* Ugly hack to avoid the declaration of pthread_spin_init. */
+#define pthread_spin_init pthread_spin_init_XXX
+#include "pthreadP.h"
+#undef pthread_spin_init
+
+int
+pthread_spin_unlock (pthread_spinlock_t *lock)
+{
+ __asm __volatile (" xc %O0(4,%R0),%0\n"
+ " bcr 15,0"
+ : "=Q" (*lock) : "m" (*lock) : "cc" );
+ return 0;
+}
+strong_alias (pthread_spin_unlock, pthread_spin_init)
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+/* Default stack size. */
+#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024)
+
+/* Required stack pointer alignment at beginning. SSE requires 16
+ bytes. */
+#define STACK_ALIGN 16
+
+/* Minimal stack size after allocating thread descriptor and guard size. */
+#define MINIMAL_REST_STACK 2048
+
+/* Alignment requirement for TCB. */
+#define TCB_ALIGNMENT 16
+
+/* The signal used for asynchronous cancelation. */
+#define SIGCANCEL __SIGRTMIN
+
+
+/* Location of current stack frame. */
+#define CURRENT_STACK_FRAME __builtin_frame_address (0)
+
+
+/* XXX Until we have a better place keep the definitions here. */
+
+/* While there is no such syscall. */
+#define __exit_thread_inline(val) \
+ INLINE_SYSCALL (exit, 0)
--- /dev/null
+#include <sysdep.h>
+#include <tls.h>
+
+MULTIPLE_THREADS_OFFSET offsetof (tcbhead_t, multiple_threads)
--- /dev/null
+/* Which thread is running on an LWP? i386 version.
+ Copyright (C) 2003 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. */
+
+#include "thread_dbP.h"
+#include <tls.h>
+
+
+td_err_e
+td_ta_map_lwp2thr (const td_thragent_t *ta, lwpid_t lwpid, td_thrhandle_t *th)
+{
+ LOG ("td_ta_map_lwp2thr");
+
+ /* Test whether the TA parameter is ok. */
+ if (! ta_ok (ta))
+ return TD_BADTA;
+
+ prgregset_t regs;
+ if (ps_lgetregs (ta->ph, lwpid, regs) != PS_OK)
+ return TD_ERR;
+
+ /* Get the thread area for the addressed thread. */
+ if (ps_get_thread_area (ta->ph, lwpid, regs[18] >> 3, &th->th_unique)
+ != PS_OK)
+ return TD_ERR; /* XXX Other error value? */
+
+ /* Found it. Now complete the `td_thrhandle_t' object. */
+ th->th_ta_p = (td_thragent_t *) ta;
+
+ return TD_OK;
+}
--- /dev/null
+/* Definition for thread-local data handling. nptl/s390 version.
+ Copyright (C) 2003 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. */
+
+#ifndef _TLS_H
+#define _TLS_H 1
+
+#include <dl-sysdep.h>
+#ifndef __ASSEMBLER__
+# include <stddef.h>
+# include <stdint.h>
+# include <stdlib.h>
+# include <list.h>
+
+
+/* Type for the dtv. */
+typedef union dtv
+{
+ size_t counter;
+ void *pointer;
+} dtv_t;
+
+
+typedef struct
+{
+ void *tcb; /* Pointer to the TCB. Not necessary the
+ thread descriptor used by libpthread. */
+ dtv_t *dtv;
+ void *self; /* Pointer to the thread descriptor. */
+ int multiple_threads;
+#ifdef NEED_DL_SYSINFO
+ uintptr_t sysinfo;
+#endif
+ list_t list;
+} tcbhead_t;
+
+#else /* __ASSEMBLER__ */
+# include <tcb-offsets.h>
+#endif
+
+
+/* We require TLS support in the tools. */
+#ifndef HAVE_TLS_SUPPORT
+# error "TLS support is required."
+#endif
+
+/* Signal that TLS support is available. */
+#define USE_TLS 1
+
+/* Alignment requirement for the stack. For IA-32 this is governed by
+ the SSE memory functions. */
+#define STACK_ALIGN 16
+
+#ifndef __ASSEMBLER__
+/* Get system call information. */
+# include <sysdep.h>
+
+/* Get the thread descriptor definition. */
+# include <nptl/descr.h>
+
+/* This is the size of the initial TCB. */
+# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
+
+/* Alignment requirements for the initial TCB. */
+# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
+
+/* This is the size of the TCB. */
+# define TLS_TCB_SIZE sizeof (struct pthread)
+
+/* Alignment requirements for the TCB. */
+# define TLS_TCB_ALIGN __alignof__ (struct pthread)
+
+/* The TCB can have any size and the memory following the address the
+ thread pointer points to is unspecified. Allocate the TCB there. */
+# define TLS_TCB_AT_TP 1
+
+
+/* Install the dtv pointer. The pointer passed is to the element with
+ index -1 which contain the length. */
+# define INSTALL_DTV(descr, dtvp) \
+ ((tcbhead_t *) (descr))->dtv = (dtvp) + 1
+
+/* Install new dtv for current thread. */
+# define INSTALL_NEW_DTV(dtv) \
+ (((tcbhead_t *) __builtin_thread_pointer ())->dtv = (dtv))
+
+/* Return dtv of given thread descriptor. */
+# define GET_DTV(descr) \
+ (((tcbhead_t *) (descr))->dtv)
+
+#if defined NEED_DL_SYSINFO && defined SHARED
+# define INIT_SYSINFO \
+ _head->sysinfo = GL(dl_sysinfo)
+#else
+# define INIT_SYSINFO
+#endif
+
+/* Code to initially initialize the thread pointer. This might need
+ special attention since 'errno' is not yet available and if the
+ operation can cause a failure 'errno' must not be touched. */
+# define TLS_INIT_TP(thrdescr, secondcall) \
+ ({ void *_thrdescr = (thrdescr); \
+ tcbhead_t *_head = _thrdescr; \
+ \
+ _head->tcb = _thrdescr; \
+ /* For now the thread descriptor is at the same address. */ \
+ _head->self = _thrdescr; \
+ /* New syscall handling support. */ \
+ INIT_SYSINFO; \
+ \
+ __builtin_set_thread_pointer (_thrdescr); \
+ NULL; \
+ })
+
+/* Return the address of the dtv for the current thread. */
+# define THREAD_DTV() \
+ (((tcbhead_t *) __builtin_thread_pointer ())->dtv)
+
+/* Return the thread descriptor for the current thread. */
+# define THREAD_SELF ((struct pthread *) __builtin_thread_pointer ())
+
+/* Access to data in the thread descriptor is easy. */
+#define THREAD_GETMEM(descr, member) \
+ THREAD_SELF->member
+#define THREAD_GETMEM_NC(descr, member, idx) \
+ THREAD_SELF->member[idx]
+#define THREAD_SETMEM(descr, member, value) \
+ THREAD_SELF->member = (value)
+#define THREAD_SETMEM_NC(descr, member, idx, value) \
+ THREAD_SELF->member[idx] = (value)
+
+#endif /* __ASSEMBLER__ */
+
+#endif /* tls.h */
--- /dev/null
+/* Copyright (C) 2003 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 _BITS_PTHREADTYPES_H
+#define _BITS_PTHREADTYPES_H 1
+
+#include <bits/wordsize.h>
+
+#if __WORDSIZE == 64
+# define __SIZEOF_PTHREAD_ATTR_T 56
+# define __SIZEOF_PTHREAD_MUTEX_T 40
+# define __SIZEOF_PTHREAD_MUTEXATTR_T 4
+# define __SIZEOF_PTHREAD_COND_T 48
+# define __SIZEOF_PTHREAD_CONDATTR_T 4
+# define __SIZEOF_PTHREAD_RWLOCK_T 56
+# define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
+# define __SIZEOF_PTHREAD_BARRIER_T 32
+# define __SIZEOF_PTHREAD_BARRIERATTR_T 4
+#else
+# define __SIZEOF_PTHREAD_ATTR_T 36
+# define __SIZEOF_PTHREAD_MUTEX_T 24
+# define __SIZEOF_PTHREAD_MUTEXATTR_T 4
+# define __SIZEOF_PTHREAD_COND_T 48
+# define __SIZEOF_PTHREAD_CONDATTR_T 4
+# define __SIZEOF_PTHREAD_RWLOCK_T 32
+# define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
+# define __SIZEOF_PTHREAD_BARRIER_T 20
+# define __SIZEOF_PTHREAD_BARRIERATTR_T 4
+#endif
+
+
+/* Thread identifiers. The structure of the attribute type is not
+ exposed on purpose. */
+typedef struct __opaque_pthread *pthread_t;
+
+
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_ATTR_T];
+ long int __align;
+} pthread_attr_t;
+
+
+/* Data structures for mutex handling. The structure of the attribute
+ type is not exposed on purpose. */
+typedef union
+{
+ struct
+ {
+ int __lock;
+ unsigned int __count;
+ struct pthread *__owner;
+ /* KIND must stay at this position in the structure to maintain
+ binary compatibility. */
+ int __kind;
+ } __data;
+ char __size[__SIZEOF_PTHREAD_MUTEX_T];
+ long int __align;
+} pthread_mutex_t;
+
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
+ long int __align;
+} pthread_mutexattr_t;
+
+
+/* Data structure for conditional variable handling. The structure of
+ the attribute type is not exposed on purpose. */
+typedef union
+{
+ struct
+ {
+ int __lock;
+ unsigned long long int __total_seq;
+ unsigned long long int __wakeup_seq;
+ unsigned long long int __woken_seq;
+ } __data;
+ char __size[__SIZEOF_PTHREAD_COND_T];
+ long int __align;
+} pthread_cond_t;
+
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_CONDATTR_T];
+ long int __align;
+} pthread_condattr_t;
+
+
+/* Keys for thread-specific data */
+typedef unsigned int pthread_key_t;
+
+
+/* Once-only execution */
+typedef int pthread_once_t;
+
+
+#ifdef __USE_UNIX98
+/* Data structure for read-write lock variable handling. The
+ structure of the attribute type is not exposed on purpose. */
+typedef union
+{
+# if __WORDSIZE == 64
+struct
+ {
+ int __lock;
+ unsigned int __nr_readers;
+ unsigned int __readers_wakeup;
+ unsigned int __writer_wakeup;
+ unsigned int __nr_readers_queued;
+ unsigned int __nr_writers_queued;
+ pthread_t __writer;
+ unsigned long int __pad1;
+ unsigned long int __pad2;
+ /* FLAGS must stay at this position in the structure to maintain
+ binary compatibility. */
+ unsigned int __flags;
+ } __data;
+# else
+ struct
+ {
+ int __lock;
+ unsigned int __nr_readers;
+ unsigned int __readers_wakeup;
+ unsigned int __writer_wakeup;
+ unsigned int __nr_readers_queued;
+ unsigned int __nr_writers_queued;
+ /* FLAGS must stay at this position in the structure to maintain
+ binary compatibility. */
+ unsigned int __flags;
+ pthread_t __writer;
+ } __data;
+# endif
+ char __size[__SIZEOF_PTHREAD_RWLOCK_T];
+ long int __align;
+} pthread_rwlock_t;
+
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
+ long int __align;
+} pthread_rwlockattr_t;
+#endif
+
+
+#ifdef __USE_XOPEN2K
+/* POSIX spinlock data type. */
+typedef volatile int pthread_spinlock_t;
+
+
+/* POSIX barriers data type. The structure of the type is
+ deliberately not exposed. */
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_BARRIER_T];
+ long int __align;
+} pthread_barrier_t;
+
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
+ int __align;
+} pthread_barrierattr_t;
+#endif
+
+
+#endif /* bits/pthreadtypes.h */
--- /dev/null
+/* Copyright (C) 2003 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 _SEMAPHORE_H
+# error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead."
+#endif
+
+#include <bits/wordsize.h>
+
+#if __WORDSIZE == 64
+# define __SIZEOF_SEM_T 32
+#else
+# define __SIZEOF_SEM_T 16
+#endif
+
+/* Value returned if `sem_open' failed. */
+#define SEM_FAILED ((sem_t *) 0)
+
+/* Maximum value the semaphore can have. */
+#define SEM_VALUE_MAX ((int) ((~0u) >> 1))
+
+
+typedef union
+{
+ char __size[__SIZEOF_SEM_T];
+ long int __align;
+} sem_t;
--- /dev/null
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>.
+
+ 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. */
+
+/* Value passed to 'clone' for initialization of the thread register. */
+#define TLS_VALUE pd
+
+/* Get the real implementation. */
+#include <nptl/sysdeps/pthread/createthread.c>
--- /dev/null
+/* System-specific settings for dynamic linker code. s390 version.
+ Copyright (C) 2003 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. */
+
+#ifndef _DL_SYSDEP_H
+#define _DL_SYSDEP_H 1
+
+/* This macro must be defined to either 0 or 1.
+
+ If 1, then an errno global variable hidden in ld.so will work right with
+ all the errno-using libc code compiled for ld.so, and there is never a
+ need to share the errno location with libc. This is appropriate only if
+ all the libc functions that ld.so uses are called without PLT and always
+ get the versions linked into ld.so rather than the libc ones. */
+
+#ifdef IS_IN_rtld
+# define RTLD_PRIVATE_ERRNO 1
+#else
+# define RTLD_PRIVATE_ERRNO 0
+#endif
+
+#endif /* dl-sysdep.h */
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <sched.h>
+#include <signal.h>
+#include <sysdep.h>
+#include <tls.h>
+
+
+#define ARCH_FORK() \
+ INLINE_SYSCALL (clone, 5, \
+ 0, CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID | SIGCHLD, \
+ NULL, &THREAD_SELF->tid, NULL)
+
+#include "../fork.c"
--- /dev/null
+/* Clean up stack frames unwound by longjmp. Linux/s390 version.
+ Copyright (C) 2003 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 <setjmp.h>
+#include <stddef.h>
+#include <pthread-functions.h>
+
+extern void __pthread_cleanup_upto (jmp_buf env, char *targetframe);
+#pragma weak __pthread_cleanup_upto
+
+
+void
+_longjmp_unwind (jmp_buf env, int val)
+{
+#ifdef SHARED
+# define fptr __libc_pthread_functions.ptr___pthread_cleanup_upto
+#else
+# define fptr __pthread_cleanup_upto
+#endif
+
+ unsigned int local_var;
+
+ if (fptr != NULL)
+ fptr (env, &local_var);
+}
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+/* No difference to lowlevellock.c */
+#include "lowlevellock.c"
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+/* No difference to lowlevelmutex.c */
+#include "lowlevelmutex.c"
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+
+
+void
+___lll_lock (futex, newval)
+ int *futex;
+ int newval;
+{
+ do
+ {
+ int oldval;
+
+ lll_futex_wait (futex, newval);
+ lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,-1");
+ }
+ while (newval != 0);
+
+ *futex = -1;
+}
+hidden_proto (___lll_lock)
+
+
+/* XXX Should not be in libc.so */
+int
+lll_unlock_wake_cb (futex)
+ int *futex;
+{
+ int oldval;
+ int newval;
+
+ lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,1");
+ if (oldval < 0)
+ lll_futex_wake (futex, 1);
+ return 0;
+}
+hidden_proto (lll_unlock_wake_cb)
+
+
+/* XXX Should not be in libc.so */
+int
+___lll_timedwait_tid (ptid, abstime)
+ int *ptid;
+ const struct timespec *abstime;
+{
+ int tid;
+
+ if (abstime == NULL || abstime->tv_nsec >= 1000000000)
+ return EINVAL;
+
+ /* Repeat until thread terminated. */
+ while ((tid = *ptid) != 0)
+ {
+ /* Get current time. */
+ struct timeval tv;
+ gettimeofday (&tv, NULL);
+
+ /* Determine relative timeout. */
+ struct timespec rt;
+ rt.tv_sec = abstime->tv_sec - tv.tv_sec;
+ rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
+ if (rt.tv_nsec < 0)
+ {
+ rt.tv_nsec += 1000000000;
+ rt.tv_sec--;
+ }
+ /* Already timed out? */
+ if (rt.tv_sec < 0)
+ return ETIMEDOUT;
+
+ /* Wait until thread terminates. */
+ int err = lll_futex_timed_wait (ptid, tid, &rt);
+
+ /* Woken due to timeout? */
+ if (err == -ETIMEDOUT)
+ /* Yes. */
+ return ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+hidden_proto (___lll_timedwait_tid)
--- /dev/null
+/* Copyright (C) 2003 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>
+
+#define SYS_futex 238
+#define FUTEX_WAIT 0
+#define FUTEX_WAKE 1
+
+/* 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; \
+ })
+
+
+#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" ); \
+ } 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" );
+ return old != 0;
+}
+#define lll_mutex_trylock(futex) __lll_mutex_trylock (&(futex))
+
+
+extern void ___lll_mutex_lock (int *, int) attribute_hidden;
+
+
+static inline void
+__attribute__ ((always_inline))
+__lll_mutex_lock (int *futex)
+{
+ int oldval;
+ int newval;
+
+ lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,1");
+ if (oldval > 0)
+ ___lll_mutex_lock (futex, newval);
+}
+#define lll_mutex_lock(futex) __lll_mutex_lock (&(futex))
+
+
+extern int ___lll_mutex_timedlock (int *, const struct timespec *, int)
+ attribute_hidden;
+
+
+static inline int
+__attribute__ ((always_inline))
+__lll_mutex_timedlock (int *futex, struct timespec *abstime)
+{
+ int oldval;
+ int newval;
+ int result = 0;
+
+ lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,1");
+ if (oldval > 0)
+ result = ___lll_mutex_timedlock (futex, abstime, newval);
+
+ 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;
+
+ 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))
+
+#define lll_mutex_islocked(futex) \
+ (futex != 0)
+
+
+/* We have a separate internal lock implementation which is not tied
+ to binary compatibility. */
+
+/* Type for lock object. */
+typedef int lll_lock_t;
+
+/* Initializers for lock. */
+#define LLL_LOCK_INITIALIZER (1)
+#define LLL_LOCK_INITIALIZER_LOCKED (0)
+
+
+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 */
+
+
+static inline int
+__attribute__ ((always_inline))
+__lll_trylock (int *futex)
+{
+ unsigned int old;
+
+ __asm __volatile ("cs %0,%3,%1"
+ : "=d" (old), "=Q" (*futex)
+ : "0" (1), "d" (0), "m" (*futex) : "cc" );
+ return old != 1;
+}
+#define lll_trylock(futex) __lll_trylock (&(futex))
+
+
+extern void ___lll_lock (int *, int) attribute_hidden;
+
+static inline void
+__attribute__ ((always_inline))
+__lll_lock (int *futex)
+{
+ int oldval;
+ int newval;
+
+ lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,-1");
+ if (newval < 0)
+ ___lll_lock (futex, newval);
+}
+#define lll_lock(futex) __lll_lock (&(futex))
+
+
+static inline void
+__attribute__ ((always_inline))
+__lll_unlock (int *futex)
+{
+ int oldval;
+ int newval;
+
+ lll_compare_and_swap (futex, oldval, newval, "lhi %2,1");
+ if (oldval < 0)
+ lll_futex_wake (futex, 1);
+}
+#define lll_unlock(futex) __lll_unlock(&(futex))
+
+
+#define lll_islocked(futex) \
+ (futex != 1)
+
+
+/* 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;
+static inline int
+__attribute__ ((always_inline))
+__lll_timedwait_tid (int *ptid, const struct timespec *abstime)
+{
+ if (*ptid == 0)
+ return 0;
+
+ return ___lll_timedwait_tid (ptid, abstime);
+}
+#define lll_timedwait_tid(tid, abstime) __lll_timedwait_tid (&(tid), abstime)
+
+
+static inline void
+__attribute__ ((always_inline))
+__lll_wake_tid (int *ptid)
+{
+ *ptid = 0;
+ lll_futex_wake (ptid, INT_MAX);
+}
+#define lll_wake_tid(tid) __lll_wake_tid (&(tid))
+
+
+/* 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 */
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+
+
+void
+___lll_mutex_lock (futex, newval)
+ int *futex;
+ int newval;
+{
+ int oldval;
+
+ do
+ {
+ lll_futex_wait (futex, newval);
+ lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,1");
+ }
+ while (oldval != 0);
+
+ *futex = 2;
+}
+hidden_proto (___lll_mutex_lock)
+
+
+int
+___lll_mutex_timedlock (futex, abstime, newval)
+ int *futex;
+ const struct timespec *abstime;
+ int newval;
+{
+ /* Reject invalid timeouts. */
+ if (abstime->tv_nsec >= 1000000000)
+ return EINVAL;
+
+ int oldval;
+ do
+ {
+ /* Get the current time. */
+ struct timeval tv;
+ gettimeofday (&tv, NULL);
+
+ /* Compute relative timeout. */
+ struct timespec rt;
+ rt.tv_sec = abstime->tv_sec - tv.tv_sec;
+ rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
+ if (rt.tv_nsec < 0)
+ {
+ rt.tv_nsec += 1000000000;
+ --rt.tv_sec;
+ }
+ /* Already timed out? */
+ if (rt.tv_sec < 0)
+ return ETIMEDOUT;
+
+ /* Wait. */
+ int err = lll_futex_timed_wait (futex, newval, &rt);
+
+ /* If timed out return with an appropriate error. */
+ if (err == -ETIMEDOUT)
+ return ETIMEDOUT;
+
+ /* XXX oldval in undefined !!! */
+ lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,1");
+ }
+ while (oldval != 0);
+
+ *futex = 2;
+
+ return 0;
+}
+hidden_proto (___lll_mutex_timedlock)
--- /dev/null
+/* Copyright (C) 2003 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 _LOWLEVELSEM_H
+#define _LOWLEVELSEM_H 1
+
+#include <dl-sysdep.h>
+#include <tls.h>
+#include <lowlevellock.h>
+#include <semaphore.h>
+
+
+static inline int
+__attribute__ ((always_inline))
+lll_sem_wait (sem_t *sem)
+{
+ int oldval;
+ int newval;
+
+ while (1)
+ {
+ /* Atomically decrement semaphore counter if it is > 0. */
+ lll_compare_and_swap ((int *) sem, oldval, newval,
+ "ltr %2,%1; jnp 1f; ahi %2,-1");
+ /* oldval != newval if the semaphore count has been decremented. */
+ if (oldval != newval)
+ return 0;
+ int err = lll_futex_wait ((int *) sem, 0);
+ if (err != 0 && err != -EWOULDBLOCK)
+ return -err;
+ }
+ return 0;
+}
+
+
+#if 0
+/* Not defined anywhere. */
+extern int __lll_sem_timedwait (sem_t *sem, const struct timespec *ts)
+ attribute_hidden;
+#define lll_sem_timedwait(sem, timeout) \
+ __lll_sem_timedwait (sem, timeout)
+#endif
+
+static inline void
+__attribute__ ((always_inline))
+lll_sem_post(sem_t *sem)
+{
+ int oldval;
+ int newval;
+
+ lll_compare_and_swap ((int *) sem, oldval, newval, "lr %2,%1; ahi %2,1");
+ lll_futex_wake ((int *) sem, newval);
+}
+
+#endif /* lowlevelsem.h */
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include "pthreadP.h"
+#include <lowlevellock.h>
+
+
+unsigned long int __fork_generation attribute_hidden;
+
+
+static void
+clear_once_control (void *arg)
+{
+ pthread_once_t *once_control = (pthread_once_t *) arg;
+
+ *once_control = 0;
+ lll_futex_wake (once_control, INT_MAX);
+}
+
+
+int
+__pthread_once (once_control, init_routine)
+ pthread_once_t *once_control;
+ void (*init_routine) (void);
+{
+ while (1)
+ {
+ int oldval;
+ int newval;
+
+ /* Pseudo code:
+ oldval = *once_control;
+ if ((oldval & 2) == 0)
+ {
+ newval = (oldval & 3) | __fork_generation | 1;
+ *once_control = newval;
+ }
+ Do this atomically. */
+ __asm __volatile (" l %1,%0\n"
+ "0: lhi %2,2\n"
+ " tml %1,2\n"
+ " jnz 1f\n"
+ " nr %2,%1\n"
+ " ahi %2,1\n"
+ " o %2,%3\n"
+ " cs %1,%2,%0\n"
+ " jl 0b\n"
+ "1:"
+ : "=Q" (*once_control), "=&d" (oldval), "=&d" (newval)
+ : "m" (__fork_generation), "m" (*once_control)
+ : "cc" );
+ /* Check if the initialized has already been done. */
+ if ((oldval & 2) != 0)
+ break;
+ /* Check if another thread already runs the initializer. */
+ if ((oldval & 1) != 0)
+ {
+ /* Check whether the initializer execution was interrupted
+ by a fork. */
+ if (((oldval ^ newval) & -4) == 0)
+ {
+ /* Same generation, some other thread was faster. Wait. */
+ lll_futex_wait (once_control, newval);
+ continue;
+ }
+ }
+
+ /* This thread is the first here. Do the initialization.
+ Register a cleanup handler so that in case the thread gets
+ interrupted the initialization can be restarted. */
+ pthread_cleanup_push (clear_once_control, once_control);
+
+ init_routine ();
+
+ pthread_cleanup_pop (0);
+
+
+ /* Add one to *once_control. */
+ __asm __volatile (" l %1,%0\n"
+ "0: lr %2,%1\n"
+ " ahi %2,1\n"
+ " cs %1,%2,%0\n"
+ " jl 0b\n"
+ : "=Q" (*once_control), "=&d" (oldval), "=&d" (newval)
+ : "m" (*once_control) : "cc" );
+
+ /* Wake up all other threads. */
+ lll_futex_wake (once_control, INT_MAX);
+ break;
+ }
+
+ return 0;
+}
+weak_alias (__pthread_once, pthread_once)
+strong_alias (__pthread_once, __pthread_once_internal)
--- /dev/null
+/* Special .init and .fini section support for S/390.
+ Copyright (C) 2003 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.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file with other
+ programs, and to distribute those programs without any restriction
+ coming from the use of this file. (The Lesser General Public
+ License restrictions do apply in other respects; for example, they
+ cover modification of the file, and distribution when not linked
+ into another program.)
+
+ 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, 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/* This file is compiled into assembly code which is then munged by a sed
+ script into two files: crti.s and crtn.s.
+
+ * crti.s puts a function prologue at the beginning of the
+ .init and .fini sections and defines global symbols for
+ those addresses, so they can be called as functions.
+
+ * crtn.s puts the corresponding function epilogues
+ in the .init and .fini sections. */
+
+__asm__ ("\
+\n\
+#include \"defs.h\"\n\
+\n\
+/*@HEADER_ENDS*/\n\
+\n\
+/*@TESTS_BEGIN*/\n\
+\n\
+/*@TESTS_END*/\n\
+\n\
+/*@_init_PROLOG_BEGINS*/\n\
+\n\
+ .section .init\n\
+#NO_APP\n\
+ .align 4\n\
+.globl _init\n\
+ .type _init,@function\n\
+_init:\n\
+# leaf function 0\n\
+# automatics 0\n\
+# outgoing args 0\n\
+# need frame pointer 0\n\
+# call alloca 0\n\
+# has varargs 0\n\
+# incoming args (stack) 0\n\
+# function length 36\n\
+ STM 6,15,24(15)\n\
+ BRAS 13,.LTN1_0\n\
+.LT1_0:\n\
+.LC13:\n\
+ .long __pthread_initialize_minimal_internal-.LT1_0\n\
+.LC14:\n\
+ .long __gmon_start__@GOT\n\
+.LC15:\n\
+ .long _GLOBAL_OFFSET_TABLE_-.LT1_0\n\
+.LTN1_0:\n\
+ LR 1,15\n\
+ AHI 15,-96\n\
+ ST 1,0(15)\n\
+ L 12,.LC15-.LT1_0(13)\n\
+ AR 12,13\n\
+ L 1,.LC13-.LT1_0(13)\n\
+ LA 1,0(1,13)\n\
+ BASR 14,1\n\
+ L 1,.LC14-.LT1_0(13)\n\
+ L 1,0(1,12)\n\
+ LTR 1,1\n\
+ JE .L22\n\
+ BASR 14,1\n\
+.L22:\n\
+#APP\n\
+ .align 4,0x07\n\
+ END_INIT\n\
+\n\
+/*@_init_PROLOG_ENDS*/\n\
+\n\
+/*@_init_EPILOG_BEGINS*/\n\
+ .align 4\n\
+ .section .init\n\
+#NO_APP\n\
+ .align 4\n\
+ L 4,152(15)\n\
+ LM 6,15,120(15)\n\
+ BR 4\n\
+#APP\n\
+ END_INIT\n\
+\n\
+/*@_init_EPILOG_ENDS*/\n\
+\n\
+/*@_fini_PROLOG_BEGINS*/\n\
+ .section .fini\n\
+#NO_APP\n\
+ .align 4\n\
+.globl _fini\n\
+ .type _fini,@function\n\
+_fini:\n\
+# leaf function 0\n\
+# automatics 0\n\
+# outgoing args 0\n\
+# need frame pointer 0\n\
+# call alloca 0\n\
+# has varargs 0\n\
+# incoming args (stack) 0\n\
+# function length 30\n\
+ STM 6,15,24(15)\n\
+ BRAS 13,.LTN2_0\n\
+.LT2_0:\n\
+.LC17:\n\
+ .long _GLOBAL_OFFSET_TABLE_-.LT2_0\n\
+.LTN2_0:\n\
+ LR 1,15\n\
+ AHI 15,-96\n\
+ ST 1,0(15)\n\
+ L 12,.LC17-.LT2_0(13)\n\
+ AR 12,13\n\
+#APP\n\
+ .align 4,0x07\n\
+ END_FINI\n\
+\n\
+/*@_fini_PROLOG_ENDS*/\n\
+\n\
+/*@_fini_EPILOG_BEGINS*/\n\
+ .align 4\n\
+ .section .fini\n\
+#NO_APP\n\
+ .align 4\n\
+ L 4,152(15)\n\
+ LM 6,15,120(15)\n\
+ BR 4\n\
+#APP\n\
+ END_FINI\n\
+\n\
+/*@_fini_EPILOG_ENDS*/\n\
+\n\
+/*@TRAILER_BEGINS*/\
+");
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <sysdep.h>
+#define _ERRNO_H 1
+#include <bits/errno.h>
+#include <kernel-features.h>
+#include <bits/wordsize.h>
+
+/* Clone the calling process, but without copying the whole address space.
+ The calling process is suspended until the new process exits or is
+ replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
+ and the process ID of the new process to the old process. */
+
+ENTRY (__vfork)
+ /* Do vfork system call. */
+ svc SYS_ify (vfork)
+
+ /* Check for error. */
+ lhi %r4,-4095
+ clr %r2,%r4
+ jnl SYSCALL_ERROR_LABEL
+
+ /* Normal return. */
+ br %r14
+PSEUDO_END(__vfork)
+
+weak_alias (__vfork, vfork)
--- /dev/null
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.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. */
+
+#include <sysdep.h>
+#include <tls.h>
+#ifndef __ASSEMBLER__
+# include <nptl/pthreadP.h>
+#endif
+
+#if !defined NOT_IN_libc || defined IS_IN_libpthread
+
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, args) \
+ .text; \
+L(pseudo_cancel): \
+ STM_##args \
+ stm %r12,%r15,48(%r15); \
+ lr %r14,%r15; \
+ ahi %r15,-96; \
+ st %r14,0(%r15); \
+ basr %r13,0; \
+0: l %r1,1f-0b(%r13); \
+ bas %r14,0(%r1,%r13); \
+ lr %r0,%r2; \
+ LM_##args \
+ DO_CALL(syscall_name, args); \
+ l %r1,2f-0b(%r13); \
+ lr %r12,%r2; \
+ lr %r2,%r0; \
+ bas %r14,0(%r1,%r13); \
+ lr %r2,%r12; \
+ lm %r12,%r15,48+96(%r15); \
+ j L(pseudo_check); \
+1: .long CENABLE-0b; \
+2: .long CDISABLE-0b; \
+ENTRY(name) \
+ SINGLE_THREAD_P(%r1) \
+ jne L(pseudo_cancel); \
+ DO_CALL(syscall_name, args); \
+L(pseudo_check): \
+ lhi %r4,-4095; \
+ clr %r2,%r4; \
+ jnl SYSCALL_ERROR_LABEL; \
+L(pseudo_end):
+
+# ifdef IS_IN_libpthread
+# define CENABLE __pthread_enable_asynccancel
+# define CDISABLE __pthread_disable_asynccancel
+# else
+# define CENABLE __libc_enable_asynccancel
+# define CDISABLE __libc_disable_asynccancel
+# endif
+
+#define STM_0 /* Nothing */
+#define STM_1 st %r2,8(%r15);
+#define STM_2 stm %r2,%r3,8(%r15);
+#define STM_3 stm %r2,%r4,8(%r15);
+#define STM_4 stm %r2,%r5,8(%r15);
+#define STM_5 stm %r2,%r5,8(%r15);
+
+#define LM_0 /* Nothing */
+#define LM_1 l %r2,8+96(%r15);
+#define LM_2 lm %r2,%r3,8+96(%r15);
+#define LM_3 lm %r2,%r4,8+96(%r15);
+#define LM_4 lm %r2,%r5,8+96(%r15);
+#define LM_5 lm %r2,%r5,8+96(%r15);
+
+# ifndef __ASSEMBLER__
+# define SINGLE_THREAD_P \
+ __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
+ header.data.multiple_threads) == 0, 1)
+# else
+# define SINGLE_THREAD_P(reg) \
+ ear reg,%a0; \
+ icm reg,15,MULTIPLE_THREADS_OFFSET(reg);
+# endif
+
+#elif !defined __ASSEMBLER__
+
+/* This code should never be used but we define it anyhow. */
+# define SINGLE_THREAD_P (1)
+
+#endif
--- /dev/null
+/* Special .init and .fini section support for 64 bit S/390.
+ Copyright (C) 2003 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.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file with other
+ programs, and to distribute those programs without any restriction
+ coming from the use of this file. (The Lesser General Public
+ License restrictions do apply in other respects; for example, they
+ cover modification of the file, and distribution when not linked
+ into another program.)
+
+ 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, 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/* This file is compiled into assembly code which is then munged by a sed
+ script into two files: crti.s and crtn.s.
+
+ * crti.s puts a function prologue at the beginning of the
+ .init and .fini sections and defines global symbols for
+ those addresses, so they can be called as functions.
+
+ * crtn.s puts the corresponding function epilogues
+ in the .init and .fini sections. */
+
+__asm__ ("\
+\n\
+#include \"defs.h\"\n\
+\n\
+/*@HEADER_ENDS*/\n\
+\n\
+/*@TESTS_BEGIN*/\n\
+\n\
+/*@TESTS_END*/\n\
+\n\
+/*@_init_PROLOG_BEGINS*/\n\
+\n\
+ .section .init\n\
+#NO_APP\n\
+ .align 4\n\
+.globl _init\n\
+ .type _init,@function\n\
+_init:\n\
+# leaf function 0\n\
+# automatics 0\n\
+# outgoing args 0\n\
+# need frame pointer 0\n\
+# call alloca 0\n\
+# has varargs 0\n\
+# incoming args (stack) 0\n\
+# function length 36\n\
+ STMG 6,15,48(15)\n\
+ LGR 1,15\n\
+ AGHI 15,-160\n\
+ STG 1,0(15)\n\
+ LARL 12,_GLOBAL_OFFSET_TABLE_\n\
+ BRASL 14,__pthread_initialize_minimal_internal\n\
+ LARL 1,__gmon_start__@GOTENT\n\
+ LG 1,0(1)\n\
+ LTGR 1,1\n\
+ JE .L22\n\
+ BASR 14,1\n\
+.L22:\n\
+#APP\n\
+ .align 4,0x07\n\
+ END_INIT\n\
+\n\
+/*@_init_PROLOG_ENDS*/\n\
+\n\
+/*@_init_EPILOG_BEGINS*/\n\
+ .align 4\n\
+ .section .init\n\
+#NO_APP\n\
+ .align 4\n\
+ LG 4,272(15)\n\
+ LMG 6,15,208(15)\n\
+ BR 4\n\
+#APP\n\
+ END_INIT\n\
+\n\
+/*@_init_EPILOG_ENDS*/\n\
+\n\
+/*@_fini_PROLOG_BEGINS*/\n\
+ .section .fini\n\
+#NO_APP\n\
+ .align 4\n\
+.globl _fini\n\
+ .type _fini,@function\n\
+_fini:\n\
+# leaf function 0\n\
+# automatics 0\n\
+# outgoing args 0\n\
+# need frame pointer 0\n\
+# call alloca 0\n\
+# has varargs 0\n\
+# incoming args (stack) 0\n\
+# function length 30\n\
+ STMG 6,15,48(15)\n\
+ LGR 1,15\n\
+ AGHI 15,-160\n\
+ STG 1,0(15)\n\
+ LARL 12,_GLOBAL_OFFSET_TABLE_\n\
+#APP\n\
+ .align 4,0x07\n\
+ END_FINI\n\
+\n\
+/*@_fini_PROLOG_ENDS*/\n\
+\n\
+/*@_fini_EPILOG_BEGINS*/\n\
+ .align 4\n\
+ .section .fini\n\
+#NO_APP\n\
+ .align 4\n\
+ LG 4,272(15)\n\
+ LMG 6,15,208(15)\n\
+ BR 4\n\
+#APP\n\
+ END_FINI\n\
+\n\
+/*@_fini_EPILOG_ENDS*/\n\
+\n\
+/*@TRAILER_BEGINS*/\n\
+ ");
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <sysdep.h>
+#define _ERRNO_H 1
+#include <bits/errno.h>
+#include <kernel-features.h>
+#include <bits/wordsize.h>
+
+/* Clone the calling process, but without copying the whole address space.
+ The calling process is suspended until the new process exits or is
+ replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
+ and the process ID of the new process to the old process. */
+
+ENTRY (__vfork)
+ /* Do vfork system call. */
+ svc SYS_ify (vfork)
+
+ /* Check for error. */
+ lghi %r4,-4095
+ clgr %r2,%r4
+ jnl SYSCALL_ERROR_LABEL
+
+ /* Normal return. */
+ br %r14
+PSEUDO_END(__vfork)
+
+weak_alias (__vfork, vfork)
--- /dev/null
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.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. */
+
+#include <sysdep.h>
+#include <tls.h>
+#ifndef __ASSEMBLER__
+# include <nptl/pthreadP.h>
+#endif
+
+#if !defined NOT_IN_libc || defined IS_IN_libpthread
+
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, args) \
+ .text; \
+L(pseudo_cancel): \
+ STM_##args \
+ stmg %r13,%r15,104(%r15); \
+ lgr %r14,%r15; \
+ aghi %r15,-160; \
+ stg %r14,0(%r15); \
+ brasl %r14,CENABLE; \
+ lgr %r0,%r2; \
+ LM_##args \
+ DO_CALL(syscall_name, args); \
+ lgr %r13,%r2; \
+ lgr %r2,%r0; \
+ brasl %r14,CDISABLE; \
+ lgr %r2,%r13; \
+ lmg %r13,%r15,104+160(%r15); \
+ j L(pseudo_check); \
+ENTRY(name) \
+ SINGLE_THREAD_P \
+ jne L(pseudo_cancel); \
+ DO_CALL(syscall_name, args); \
+L(pseudo_check): \
+ lghi %r4,-4095; \
+ clgr %r2,%r4; \
+ jgnl SYSCALL_ERROR_LABEL; \
+L(pseudo_end):
+
+# ifdef IS_IN_libpthread
+# define CENABLE __pthread_enable_asynccancel
+# define CDISABLE __pthread_disable_asynccancel
+# define __local_multiple_threads __pthread_multiple_threads
+# else
+# define CENABLE __libc_enable_asynccancel
+# define CDISABLE __libc_disable_asynccancel
+# define __local_multiple_threads __libc_multiple_threads
+# endif
+
+#define STM_0 /* Nothing */
+#define STM_1 stg %r2,16(%r15);
+#define STM_2 stmg %r2,%r3,16(%r15);
+#define STM_3 stmg %r2,%r4,16(%r15);
+#define STM_4 stmg %r2,%r5,16(%r15);
+#define STM_5 stmg %r2,%r5,16(%r15);
+
+#define LM_0 /* Nothing */
+#define LM_1 lg %r2,16+160(%r15);
+#define LM_2 lmg %r2,%r3,16+160(%r15);
+#define LM_3 lmg %r2,%r4,16+160(%r15);
+#define LM_4 lmg %r2,%r5,16+160(%r15);
+#define LM_5 lmg %r2,%r5,16+160(%r15);
+
+# ifndef __ASSEMBLER__
+# define SINGLE_THREAD_P \
+ __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
+ header.data.multiple_threads) == 0, 1)
+# else
+# define SINGLE_THREAD_P \
+ ear %r1,%a0; \
+ sllg %r1,%r1,32; \
+ ear %r1,%a1; \
+ icm %r1,15,MULTIPLE_THREADS_OFFSET(%r1);
+# endif
+
+#elif !defined __ASSEMBLER__
+
+/* This code should never be used but we define it anyhow. */
+# define SINGLE_THREAD_P (1)
+
+#endif
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevelsem.h>
+#include <internaltypes.h>
+
+#include <shlib-compat.h>
+
+
+int
+__new_sem_post (sem_t *sem)
+{
+ int oldval;
+ int newval;
+
+ lll_compare_and_swap ((int *) sem, oldval, newval, "lr %2,%1; ahi %2,1");
+ lll_futex_wake ((int *) sem, newval);
+}
+versioned_symbol (libpthread, __new_sem_post, sem_post, GLIBC_2_1);
+#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
+strong_alias (__new_sem_post, __old_sem_post)
+compat_symbol (libpthread, __old_sem_post, sem_post, GLIBC_2_0);
+#endif
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevelsem.h>
+#include <internaltypes.h>
+
+#include <shlib-compat.h>
+
+
+int
+sem_timedwait (sem, abstime)
+ sem_t *sem;
+ const struct timespec *abstime;
+{
+ int oldval, newval;
+
+ while (1)
+ {
+ /* Atomically decrement semaphore counter if it is > 0. */
+ lll_compare_and_swap ((int *) sem, oldval, newval,
+ "ltr %2,%1; jnp 1f; ahi %2,-1");
+ /* oldval != newval if the semaphore count has been decremented. */
+ if (oldval != newval)
+ return 0;
+
+ /* Check for invalid timeout values. */
+ if (abstime->tv_nsec >= 1000000000)
+ {
+ __set_errno(EINVAL);
+ return -1;
+ }
+
+ /* Get the current time. */
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+
+ /* Compute the relative timeout. */
+ struct timespec rt;
+ rt.tv_sec = abstime->tv_sec - tv.tv_sec;
+ rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
+ if (rt.tv_nsec < 0)
+ {
+ rt.tv_nsec += 1000000000;
+ rt.tv_sec--;
+ }
+ /* Already timed out. */
+ if (rt.tv_sec < 0)
+ {
+ __set_errno(ETIMEDOUT);
+ return -1;
+ }
+
+ /* Do wait. */
+ int err = lll_futex_timed_wait ((int *) sem, 0, &rt);
+
+ /* Returned after timing out? */
+ if (err == -ETIMEDOUT)
+ {
+ __set_errno (ETIMEDOUT);
+ return -1;
+ }
+
+ /* Handle EINTR. */
+ if (err != 0 && err != -EWOULDBLOCK)
+ {
+ __set_errno (-err);
+ return -1;
+ }
+ }
+}
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevelsem.h>
+#include <internaltypes.h>
+
+#include <shlib-compat.h>
+
+
+int
+__new_sem_trywait (sem_t *sem)
+{
+ int oldval;
+ int newval;
+
+ /* Atomically decrement sem counter if it is > 0. */
+ lll_compare_and_swap ((int *) sem, oldval, newval,
+ "ltr %2,%1; jnp 1f; ahi %2,-1");
+ /* oldval != newval if the semaphore count has been decremented. */
+ if (oldval == newval)
+ {
+ __set_errno (EAGAIN);
+ return -1;
+ }
+ return 0;
+}
+versioned_symbol (libpthread, __new_sem_trywait, sem_trywait, GLIBC_2_1);
+#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
+strong_alias (__new_sem_trywait, __old_sem_trywait)
+compat_symbol (libpthread, __old_sem_trywait, sem_trywait, GLIBC_2_0);
+#endif
--- /dev/null
+/* Copyright (C) 2003 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. */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevelsem.h>
+#include <internaltypes.h>
+
+#include <shlib-compat.h>
+
+
+int
+__new_sem_wait (sem_t *sem)
+{
+ while (1)
+ {
+ int oldval;
+ int newval;
+
+ /* Atomically decrement semaphore counter if it is > 0. */
+ lll_compare_and_swap ((int *) sem, oldval, newval,
+ "ltr %2,%1; jnp 1f; ahi %2,-1");
+
+ /* oldval != newval if the semaphore count has been decremented. */
+ if (oldval != newval)
+ return 0;
+
+ /* Do wait. */
+ int err = lll_futex_wait ((int *) sem, 0);
+
+ /* Handle EINTR. */
+ if (err != 0 && err != -EWOULDBLOCK)
+ {
+ __set_errno (-err);
+ return -1;
+ }
+ }
+}
+
+versioned_symbol (libpthread, __new_sem_wait, sem_wait, GLIBC_2_1);
+#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
+strong_alias (__new_sem_wait, __old_sem_wait)
+compat_symbol (libpthread, __old_sem_wait, sem_wait, GLIBC_2_0);
+#endif
projects / platform / upstream / linaro-glibc.git / commitdiff