+2006-01-03 Jakub Jelinek <jakub@redhat.com>
+
+ * sysdeps/unix/sysv/linux/m68k/fchownat.c: Include string.h.
+
+ * sysdeps/sparc/sparc32/dl-machine.h (LD_SO_PRELOAD): Remove unused
+ define.
+
+ * sysdeps/sparc/sparc32/bits/atomic.h: Include stdint.h, add
+ {,u}atomic*_t typedefs.
+ (__sparc32_atomic_do_lock): Add __volatile and memory clobber.
+ (__sparc32_atomic_do_unlock): Add memory barrier.
+ (__sparc32_atomic_do_lock24, __sparc32_atomic_do_unlock24): Define.
+ [!SHARED] (__v9_compare_and_exchange_val_32_acq): Define.
+ (__v7_compare_and_exchange_val_acq, __v7_compare_and_exchange_bool_acq,
+ __v7_exchange_acq, __v7_exchange_and_add, __v7_exchange_24_rel,
+ __v7_compare_and_exchange_val_24_acq, __atomic_is_v9,
+ atomic_exchange_acq, atomic_compare_and_exchange_val_24_acq,
+ atomic_exchange_24_rel): Define.
+ [SHARED] (atomic_exchange_and_add): Define.
+ [!SHARED] (__ATOMIC_HWCAP_SPARC_V9): Define.
+ [!SHARED] (_dl_hwcap): New weak decl.
+ * sysdeps/sparc/sparc32/sparcv9/bits/atomic.h (atomic_exchange_24_rel,
+ atomic_compare_and_exchange_val_24_acq): Define.
+ * sysdeps/sparc/sparc64/bits/atomic.h (atomic_exchange_24_rel,
+ atomic_compare_and_exchange_val_24_acq): Define.
+
2006-01-03 Ulrich Drepper <drepper@redhat.com>
lio_listio should emit an event for each individual request in
+2006-01-03 Jakub Jelinek <jakub@redhat.com>
+
+ * sysdeps/unix/sysv/linux/sparc/lowlevellock.h: Remove #error for
+ sparc-linux configured glibc.
+ (lll_futex_wake_unlock): Define to 1 for sparc-linux configured glibc.
+ (__lll_mutex_trylock, __lll_mutex_cond_trylock, __lll_mutex_lock,
+ __lll_mutex_cond_lock, __lll_mutex_timedlock): Use
+ atomic_compare_and_exchange_val_24_acq instead of
+ atomic_compare_and_exchange_val_acq.
+ (lll_mutex_unlock, lll_mutex_unlock_force): Use atomic_exchange_24_rel
+ instead of atomic_exchange_rel.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/lowlevellock.c: New file.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/pthread_barrier_init.c: New
+ file.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/pthread_barrier_wait.c: New
+ file.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/sem_init.c: New file.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/sem_post.c: New file.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/sem_timedwait.c: New file.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/sem_trywait.c: New file.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/sem_wait.c: New file.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/pthread_barrier_init.c:
+ New file.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/pthread_barrier_wait.c:
+ New file.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/sem_init.c: New file.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/sem_post.c: New file.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/sem_timedwait.c: New
+ file.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/sem_trywait.c: New
+ file.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/sem_wait.c: New file.
+
2006-01-03 Ulrich Drepper <drepper@redhat.com>
* sysdeps/pthread/pthread.h [__WORDSIZE==64]: Don't use cast in
-/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
})
/* Returns non-zero if error happened, zero if success. */
-#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2) \
+#ifdef __sparc32_atomic_do_lock
+/* Avoid FUTEX_WAKE_OP if supporting pre-v9 CPUs. */
+# define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2) 1
+#else
+# define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2) \
({ \
INTERNAL_SYSCALL_DECL (__err); \
long int __ret; \
FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \
INTERNAL_SYSCALL_ERROR_P (__ret, __err); \
})
-
-#ifdef __sparc32_atomic_do_lock
-#error SPARC < v9 does not support compare and swap which is essential for futex based locking
#endif
static inline int
__attribute__ ((always_inline))
__lll_mutex_trylock (int *futex)
{
- return atomic_compare_and_exchange_val_acq (futex, 1, 0) != 0;
+ return atomic_compare_and_exchange_val_24_acq (futex, 1, 0) != 0;
}
#define lll_mutex_trylock(futex) __lll_mutex_trylock (&(futex))
__attribute__ ((always_inline))
__lll_mutex_cond_trylock (int *futex)
{
- return atomic_compare_and_exchange_val_acq (futex, 2, 0) != 0;
+ return atomic_compare_and_exchange_val_24_acq (futex, 2, 0) != 0;
}
#define lll_mutex_cond_trylock(futex) __lll_mutex_cond_trylock (&(futex))
__attribute__ ((always_inline))
__lll_mutex_lock (int *futex)
{
- int val = atomic_compare_and_exchange_val_acq (futex, 1, 0);
+ int val = atomic_compare_and_exchange_val_24_acq (futex, 1, 0);
if (__builtin_expect (val != 0, 0))
__lll_lock_wait (futex);
__attribute__ ((always_inline))
__lll_mutex_cond_lock (int *futex)
{
- int val = atomic_compare_and_exchange_val_acq (futex, 2, 0);
+ int val = atomic_compare_and_exchange_val_24_acq (futex, 2, 0);
if (__builtin_expect (val != 0, 0))
__lll_lock_wait (futex);
__attribute__ ((always_inline))
__lll_mutex_timedlock (int *futex, const struct timespec *abstime)
{
- int val = atomic_compare_and_exchange_val_acq (futex, 1, 0);
+ int val = atomic_compare_and_exchange_val_24_acq (futex, 1, 0);
int result = 0;
if (__builtin_expect (val != 0, 0))
#define lll_mutex_unlock(lock) \
((void) ({ \
int *__futex = &(lock); \
- int __val = atomic_exchange_rel (__futex, 0); \
+ int __val = atomic_exchange_24_rel (__futex, 0); \
if (__builtin_expect (__val > 1, 0)) \
lll_futex_wake (__futex, 1); \
}))
#define lll_mutex_unlock_force(lock) \
((void) ({ \
int *__futex = &(lock); \
- (void) atomic_exchange_rel (__futex, 0); \
+ (void) atomic_exchange_24_rel (__futex, 0); \
lll_futex_wake (__futex, 1); \
}))
--- /dev/null
+/* low level locking for pthread library. SPARC version.
+ Copyright (C) 2003, 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Paul Mackerras <paulus@au.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 <sys/time.h>
+
+
+void
+__lll_lock_wait (int *futex)
+{
+ do
+ {
+ int oldval = atomic_compare_and_exchange_val_24_acq (futex, 2, 1);
+ if (oldval != 0)
+ lll_futex_wait (futex, 2);
+ }
+ while (atomic_compare_and_exchange_val_24_acq (futex, 2, 0) != 0);
+}
+
+
+int
+__lll_timedlock_wait (int *futex, const struct timespec *abstime)
+{
+ /* Reject invalid timeouts. */
+ if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+ return EINVAL;
+
+ do
+ {
+ struct timeval tv;
+ struct timespec rt;
+
+ /* Get the current time. */
+ (void) __gettimeofday (&tv, NULL);
+
+ /* Compute relative timeout. */
+ 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 oldval = atomic_compare_and_exchange_val_24_acq (futex, 2, 1);
+ if (oldval != 0)
+ lll_futex_timed_wait (futex, 2, &rt);
+ }
+ while (atomic_compare_and_exchange_val_24_acq (futex, 2, 0) != 0);
+
+ return 0;
+}
+
+
+/* These don't get included in libc.so */
+#ifdef IS_IN_libpthread
+int
+lll_unlock_wake_cb (int *futex)
+{
+ int val = atomic_exchange_24_rel (futex, 0);
+
+ if (__builtin_expect (val > 1, 0))
+ lll_futex_wake (futex, 1);
+
+ return 0;
+}
+
+
+int
+__lll_timedwait_tid (int *tidp, const struct timespec *abstime)
+{
+ int tid;
+
+ if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+ return EINVAL;
+
+ /* Repeat until thread terminated. */
+ while ((tid = *tidp) != 0)
+ {
+ struct timeval tv;
+ struct timespec rt;
+
+ /* Get the current time. */
+ (void) __gettimeofday (&tv, NULL);
+
+ /* Compute relative timeout. */
+ 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. */
+ if (lll_futex_timed_wait (tidp, tid, &rt) == -ETIMEDOUT)
+ return ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+#endif
--- /dev/null
+/* Copyright (C) 2002, 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+ 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"
+#include <lowlevellock.h>
+
+struct sparc_pthread_barrier
+{
+ struct pthread_barrier b;
+ unsigned char left_lock;
+ unsigned char pshared;
+};
+
+int
+pthread_barrier_init (barrier, attr, count)
+ pthread_barrier_t *barrier;
+ const pthread_barrierattr_t *attr;
+ unsigned int count;
+{
+ struct sparc_pthread_barrier *ibarrier;
+
+ if (__builtin_expect (count == 0, 0))
+ return EINVAL;
+
+ struct pthread_barrierattr *iattr = (struct pthread_barrierattr *) attr;
+ if (iattr != NULL)
+ {
+ if (iattr->pshared != PTHREAD_PROCESS_PRIVATE
+ && __builtin_expect (iattr->pshared != PTHREAD_PROCESS_SHARED, 0))
+ /* Invalid attribute. */
+ return EINVAL;
+ }
+
+ ibarrier = (struct sparc_pthread_barrier *) barrier;
+
+ /* Initialize the individual fields. */
+ ibarrier->b.lock = LLL_LOCK_INITIALIZER;
+ ibarrier->b.left = count;
+ ibarrier->b.init_count = count;
+ ibarrier->b.curr_event = 0;
+ ibarrier->left_lock = 0;
+ ibarrier->pshared = (iattr && iattr->pshared == PTHREAD_PROCESS_SHARED);
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2003, 2004, 2006 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>
+
+struct sparc_pthread_barrier
+{
+ struct pthread_barrier b;
+ unsigned char left_lock;
+ unsigned char pshared;
+};
+
+/* Wait on barrier. */
+int
+pthread_barrier_wait (barrier)
+ pthread_barrier_t *barrier;
+{
+ struct sparc_pthread_barrier *ibarrier
+ = (struct sparc_pthread_barrier *) barrier;
+ int result = 0;
+
+ /* Make sure we are alone. */
+ lll_lock (ibarrier->b.lock);
+
+ /* One more arrival. */
+ --ibarrier->b.left;
+
+ /* Are these all? */
+ if (ibarrier->b.left == 0)
+ {
+ /* Yes. Increment the event counter to avoid invalid wake-ups and
+ tell the current waiters that it is their turn. */
+ ++ibarrier->b.curr_event;
+
+ /* Wake up everybody. */
+ lll_futex_wake (&ibarrier->b.curr_event, INT_MAX);
+
+ /* This is the thread which finished the serialization. */
+ result = PTHREAD_BARRIER_SERIAL_THREAD;
+ }
+ else
+ {
+ /* The number of the event we are waiting for. The barrier's event
+ number must be bumped before we continue. */
+ unsigned int event = ibarrier->b.curr_event;
+
+ /* Before suspending, make the barrier available to others. */
+ lll_unlock (ibarrier->b.lock);
+
+ /* Wait for the event counter of the barrier to change. */
+ do
+ lll_futex_wait (&ibarrier->b.curr_event, event);
+ while (event == ibarrier->b.curr_event);
+ }
+
+ /* Make sure the init_count is stored locally or in a register. */
+ unsigned int init_count = ibarrier->b.init_count;
+
+ /* If this was the last woken thread, unlock. */
+ if (__atomic_is_v9 || ibarrier->pshared == 0)
+ {
+ if (atomic_increment_val (&ibarrier->b.left) == init_count)
+ /* We are done. */
+ lll_unlock (ibarrier->b.lock);
+ }
+ else
+ {
+ unsigned int left;
+ /* Slightly more complicated. On pre-v9 CPUs, atomic_increment_val
+ is only atomic for threads within the same process, not for
+ multiple processes. */
+ __sparc32_atomic_do_lock24 (&ibarrier->left_lock);
+ left = ++ibarrier->b.left;
+ __sparc32_atomic_do_unlock24 (&ibarrier->left_lock);
+ if (left == init_count)
+ /* We are done. */
+ lll_unlock (ibarrier->b.lock);
+ }
+
+ return result;
+}
--- /dev/null
+/* Copyright (C) 2002, 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+ 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 <semaphore.h>
+#include <lowlevellock.h>
+#include <shlib-compat.h>
+#include "semaphoreP.h"
+
+struct sparc_sem
+{
+ struct sem s;
+ unsigned char lock;
+};
+
+
+int
+__new_sem_init (sem, pshared, value)
+ sem_t *sem;
+ int pshared;
+ unsigned int value;
+{
+ /* Parameter sanity check. */
+ if (__builtin_expect (value > SEM_VALUE_MAX, 0))
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+
+ /* Map to the internal type. */
+ struct sparc_sem *isem = (struct sparc_sem *) sem;
+
+ /* Use the value the user provided. */
+ isem->s.count = value;
+
+ isem->lock = 0;
+
+ /* We can completely ignore the PSHARED parameter since inter-process
+ use needs no special preparation. */
+
+ return 0;
+}
+versioned_symbol (libpthread, __new_sem_init, sem_init, GLIBC_2_1);
+#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
+strong_alias (__new_sem_init, __old_sem_init)
+compat_symbol (libpthread, __old_sem_init, sem_init, GLIBC_2_0);
+#endif
--- /dev/null
+/* sem_post -- post to a POSIX semaphore. SPARC version.
+ Copyright (C) 2003, 2004, 2006 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 <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <internaltypes.h>
+#include <semaphore.h>
+
+#include <shlib-compat.h>
+
+int
+__new_sem_post (sem_t *sem)
+{
+ int *futex = (int *) sem, nr;
+
+ if (__atomic_is_v9)
+ nr = atomic_increment_val (futex);
+ else
+ {
+ __sparc32_atomic_do_lock24 (futex + 1);
+ nr = ++*futex;
+ __sparc32_atomic_do_unlock24 (futex + 1);
+ }
+ int err = lll_futex_wake (futex, nr);
+ if (__builtin_expect (err, 0) < 0)
+ {
+ __set_errno (-err);
+ return -1;
+ }
+ return 0;
+}
+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
+/* sem_timedwait -- wait on a semaphore. SPARC version.
+ Copyright (C) 2003, 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Paul Mackerras <paulus@au.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 <internaltypes.h>
+#include <semaphore.h>
+
+#include <pthreadP.h>
+#include <shlib-compat.h>
+
+
+int
+sem_timedwait (sem_t *sem, const struct timespec *abstime)
+{
+ /* First check for cancellation. */
+ CANCELLATION_P (THREAD_SELF);
+
+ int *futex = (int *) sem;
+ int val;
+ int err;
+
+ if (*futex > 0)
+ {
+ if (__atomic_is_v9)
+ val = atomic_decrement_if_positive (futex);
+ else
+ {
+ __sparc32_atomic_do_lock24 (futex + 1);
+ val = *futex;
+ if (val > 0)
+ *futex = val - 1;
+ __sparc32_atomic_do_unlock24 (futex + 1);
+ }
+ if (val > 0)
+ return 0;
+ }
+
+ err = -EINVAL;
+ if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+ goto error_return;
+
+ do
+ {
+ struct timeval tv;
+ struct timespec rt;
+ int sec, nsec;
+
+ /* Get the current time. */
+ __gettimeofday (&tv, NULL);
+
+ /* Compute relative timeout. */
+ sec = abstime->tv_sec - tv.tv_sec;
+ nsec = abstime->tv_nsec - tv.tv_usec * 1000;
+ if (nsec < 0)
+ {
+ nsec += 1000000000;
+ --sec;
+ }
+
+ /* Already timed out? */
+ err = -ETIMEDOUT;
+ if (sec < 0)
+ goto error_return;
+
+ /* Do wait. */
+ rt.tv_sec = sec;
+ rt.tv_nsec = nsec;
+
+ /* Enable asynchronous cancellation. Required by the standard. */
+ int oldtype = __pthread_enable_asynccancel ();
+
+ err = lll_futex_timed_wait (futex, 0, &rt);
+
+ /* Disable asynchronous cancellation. */
+ __pthread_disable_asynccancel (oldtype);
+
+ if (err != 0 && err != -EWOULDBLOCK)
+ goto error_return;
+
+ if (__atomic_is_v9)
+ val = atomic_decrement_if_positive (futex);
+ else
+ {
+ __sparc32_atomic_do_lock24 (futex + 1);
+ val = *futex;
+ if (val > 0)
+ *futex = val - 1;
+ __sparc32_atomic_do_unlock24 (futex + 1);
+ }
+ }
+ while (val <= 0);
+
+ return 0;
+
+ error_return:
+ __set_errno (-err);
+ return -1;
+}
--- /dev/null
+/* sem_trywait -- wait on a semaphore. SPARC version.
+ Copyright (C) 2003, 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Paul Mackerras <paulus@au.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 <internaltypes.h>
+#include <semaphore.h>
+
+#include <shlib-compat.h>
+
+
+int
+__new_sem_trywait (sem_t *sem)
+{
+ int *futex = (int *) sem;
+ int val;
+
+ if (*futex > 0)
+ {
+ if (__atomic_is_v9)
+ val = atomic_decrement_if_positive (futex);
+ else
+ {
+ __sparc32_atomic_do_lock24 (futex + 1);
+ val = *futex;
+ if (val > 0)
+ *futex = val - 1;
+ __sparc32_atomic_do_unlock24 (futex + 1);
+ }
+ if (val > 0)
+ return 0;
+ }
+
+ __set_errno (EAGAIN);
+ return -1;
+}
+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
+/* sem_wait -- wait on a semaphore. SPARC version.
+ Copyright (C) 2003, 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Paul Mackerras <paulus@au.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 <internaltypes.h>
+#include <semaphore.h>
+
+#include <pthreadP.h>
+#include <shlib-compat.h>
+
+
+int
+__new_sem_wait (sem_t *sem)
+{
+ /* First check for cancellation. */
+ CANCELLATION_P (THREAD_SELF);
+
+ int *futex = (int *) sem;
+ int err;
+
+ do
+ {
+ int val;
+ if (__atomic_is_v9)
+ val = atomic_decrement_if_positive (futex);
+ else
+ {
+ __sparc32_atomic_do_lock24 (futex + 1);
+ val = *futex;
+ if (val > 0)
+ *futex = val - 1;
+ __sparc32_atomic_do_unlock24 (futex + 1);
+ }
+ if (val > 0)
+ return 0;
+
+ /* Enable asynchronous cancellation. Required by the standard. */
+ int oldtype = __pthread_enable_asynccancel ();
+
+ err = lll_futex_wait (futex, 0);
+
+ /* Disable asynchronous cancellation. */
+ __pthread_disable_asynccancel (oldtype);
+ }
+ while (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
--- /dev/null
+#include "../../../../../../../pthread_barrier_init.c"
--- /dev/null
+#include "../../../../../../pthread/pthread_barrier_wait.c"
--- /dev/null
+#include "../../../../../../../sem_init.c"
--- /dev/null
+#include "../../../sem_post.c"
--- /dev/null
+#include "../../../sem_timedwait.c"
--- /dev/null
+#include "../../../sem_trywait.c"
--- /dev/null
+#include "../../../sem_wait.c"
/* Atomic operations. sparc32 version.
- Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
#ifndef _BITS_ATOMIC_H
#define _BITS_ATOMIC_H 1
+#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;
+
+
/* We have no compare and swap, just test and set.
The following implementation contends on 64 global locks
per library and assumes no variable will be accessed using atomic.h
unsigned int __idx = (((long) addr >> 2) ^ ((long) addr >> 12)) \
& 63; \
do \
- __asm ("ldstub %1, %0" \
- : "=r" (__old_lock), \
- "=m" (__sparc32_atomic_locks[__idx]) \
- : "m" (__sparc32_atomic_locks[__idx])); \
+ __asm __volatile ("ldstub %1, %0" \
+ : "=r" (__old_lock), \
+ "=m" (__sparc32_atomic_locks[__idx]) \
+ : "m" (__sparc32_atomic_locks[__idx]) \
+ : "memory"); \
while (__old_lock); \
} \
while (0)
#define __sparc32_atomic_do_unlock(addr) \
do \
- __sparc32_atomic_locks[(((long) addr >> 2) \
- ^ ((long) addr >> 12)) & 63] = 0; \
+ { \
+ __sparc32_atomic_locks[(((long) addr >> 2) \
+ ^ ((long) addr >> 12)) & 63] = 0; \
+ __asm __volatile ("" ::: "memory"); \
+ } \
+ while (0)
+
+#define __sparc32_atomic_do_lock24(addr) \
+ do \
+ { \
+ unsigned int __old_lock; \
+ do \
+ __asm __volatile ("ldstub %1, %0" \
+ : "=r" (__old_lock), "=m" (*(addr)) \
+ : "m" (*(addr)) \
+ : "memory"); \
+ while (__old_lock); \
+ } \
while (0)
+#define __sparc32_atomic_do_unlock24(addr) \
+ do \
+ { \
+ *(char *) (addr) = 0; \
+ __asm __volatile ("" ::: "memory"); \
+ } \
+ while (0)
+
+
+#ifndef SHARED
+# define __v9_compare_and_exchange_val_32_acq(mem, newval, oldval) \
+({ \
+ register __typeof (*(mem)) __acev_tmp __asm ("%g6"); \
+ register __typeof (mem) __acev_mem __asm ("%g1") = (mem); \
+ register __typeof (*(mem)) __acev_oldval __asm ("%g5"); \
+ __acev_tmp = (newval); \
+ __acev_oldval = (oldval); \
+ /* .word 0xcde05005 is cas [%g1], %g5, %g6. Can't use cas here though, \
+ because as will then mark the object file as V8+ arch. */ \
+ __asm __volatile (".word 0xcde05005" \
+ : "+r" (__acev_tmp), "=m" (*__acev_mem) \
+ : "r" (__acev_oldval), "m" (*__acev_mem), \
+ "r" (__acev_mem)); \
+ __acev_tmp; })
+#endif
+
/* The only basic operation needed is compare and exchange. */
-#define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \
+#define __v7_compare_and_exchange_val_acq(mem, newval, oldval) \
({ __typeof (mem) __acev_memp = (mem); \
__typeof (*mem) __acev_ret; \
__typeof (*mem) __acev_newval = (newval); \
__sparc32_atomic_do_unlock (__acev_memp); \
__acev_ret; })
-#define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
+#define __v7_compare_and_exchange_bool_acq(mem, newval, oldval) \
({ __typeof (mem) __aceb_memp = (mem); \
int __aceb_ret; \
__typeof (*mem) __aceb_newval = (newval); \
__sparc32_atomic_do_unlock (__aceb_memp); \
__aceb_ret; })
+#define __v7_exchange_acq(mem, newval) \
+ ({ __typeof (mem) __acev_memp = (mem); \
+ __typeof (*mem) __acev_ret; \
+ __typeof (*mem) __acev_newval = (newval); \
+ \
+ __sparc32_atomic_do_lock (__acev_memp); \
+ __acev_ret = *__acev_memp; \
+ *__acev_memp = __acev_newval; \
+ __sparc32_atomic_do_unlock (__acev_memp); \
+ __acev_ret; })
+
+#define __v7_exchange_and_add(mem, value) \
+ ({ __typeof (mem) __acev_memp = (mem); \
+ __typeof (*mem) __acev_ret; \
+ \
+ __sparc32_atomic_do_lock (__acev_memp); \
+ __acev_ret = *__acev_memp; \
+ *__acev_memp = __acev_ret + (value); \
+ __sparc32_atomic_do_unlock (__acev_memp); \
+ __acev_ret; })
+
+/* Special versions, which guarantee that top 8 bits of all values
+ are cleared and use those bits as the ldstub lock. */
+#define __v7_compare_and_exchange_val_24_acq(mem, newval, oldval) \
+ ({ __typeof (mem) __acev_memp = (mem); \
+ __typeof (*mem) __acev_ret; \
+ __typeof (*mem) __acev_newval = (newval); \
+ \
+ __sparc32_atomic_do_lock24 (__acev_memp); \
+ __acev_ret = *__acev_memp & 0xffffff; \
+ if (__acev_ret == (oldval)) \
+ *__acev_memp = __acev_newval; \
+ else \
+ __sparc32_atomic_do_unlock24 (__acev_memp); \
+ __asm __volatile ("" ::: "memory"); \
+ __acev_ret; })
+
+#define __v7_exchange_24_rel(mem, newval) \
+ ({ __typeof (mem) __acev_memp = (mem); \
+ __typeof (*mem) __acev_ret; \
+ __typeof (*mem) __acev_newval = (newval); \
+ \
+ __sparc32_atomic_do_lock24 (__acev_memp); \
+ __acev_ret = *__acev_memp & 0xffffff; \
+ *__acev_memp = __acev_newval; \
+ __asm __volatile ("" ::: "memory"); \
+ __acev_ret; })
+
+#ifdef SHARED
+
+/* When dynamically linked, we assume pre-v9 libraries are only ever
+ used on pre-v9 CPU. */
+# define __atomic_is_v9 0
+
+# define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \
+ __v7_compare_and_exchange_val_acq (mem, newval, oldval)
+
+# define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
+ __v7_compare_and_exchange_bool_acq (mem, newval, oldval)
+
+# define atomic_exchange_acq(mem, newval) \
+ __v7_exchange_acq (mem, newval)
+
+# define atomic_exchange_and_add(mem, value) \
+ __v7_exchange_and_add (mem, value)
+
+# define atomic_compare_and_exchange_val_24_acq(mem, newval, oldval) \
+ ({ \
+ if (sizeof (*mem) != 4) \
+ abort (); \
+ __v7_compare_and_exchange_val_24_acq (mem, newval, oldval); })
+
+# define atomic_exchange_24_rel(mem, newval) \
+ ({ \
+ if (sizeof (*mem) != 4) \
+ abort (); \
+ __v7_exchange_24_rel (mem, newval); })
+
+#else
+
+/* In libc.a/libpthread.a etc. we don't know if we'll be run on
+ pre-v9 or v9 CPU. To be interoperable with dynamically linked
+ apps on v9 CPUs e.g. with process shared primitives, use cas insn
+ on v9 CPUs and ldstub on pre-v9. */
+
+/* Avoid <ldsodefs.h> include here. */
+extern uint64_t _dl_hwcap __attribute__((weak));
+# define __ATOMIC_HWCAP_SPARC_V9 16
+# define __atomic_is_v9 \
+ (__builtin_expect (&_dl_hwcap != 0, 1) \
+ && __builtin_expect (_dl_hwcap & __ATOMIC_HWCAP_SPARC_V9, \
+ __ATOMIC_HWCAP_SPARC_V9))
+
+# define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \
+ ({ \
+ __typeof (*mem) __acev_wret; \
+ if (sizeof (*mem) != 4) \
+ abort (); \
+ if (__atomic_is_v9) \
+ __acev_wret \
+ = __v9_compare_and_exchange_val_32_acq (mem, newval, oldval);\
+ else \
+ __acev_wret \
+ = __v7_compare_and_exchange_val_acq (mem, newval, oldval); \
+ __acev_wret; })
+
+# define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
+ ({ \
+ int __acev_wret; \
+ if (sizeof (*mem) != 4) \
+ abort (); \
+ if (__atomic_is_v9) \
+ { \
+ __typeof (oldval) __acev_woldval = (oldval); \
+ __acev_wret \
+ = __v9_compare_and_exchange_val_32_acq (mem, newval, \
+ __acev_woldval) \
+ != __acev_woldval; \
+ } \
+ else \
+ __acev_wret \
+ = __v7_compare_and_exchange_bool_acq (mem, newval, oldval); \
+ __acev_wret; })
+
+# define atomic_exchange_rel(mem, newval) \
+ ({ \
+ __typeof (*mem) __acev_wret; \
+ if (sizeof (*mem) != 4) \
+ abort (); \
+ if (__atomic_is_v9) \
+ { \
+ __typeof (mem) __acev_wmemp = (mem); \
+ __typeof (*(mem)) __acev_wval = (newval); \
+ do \
+ __acev_wret = *__acev_wmemp; \
+ while (__builtin_expect \
+ (__v9_compare_and_exchange_val_32_acq (__acev_wmemp,\
+ __acev_wval, \
+ __acev_wret) \
+ != __acev_wret, 0)); \
+ } \
+ else \
+ __acev_wret = __v7_exchange_acq (mem, newval); \
+ __acev_wret; })
+
+# define atomic_compare_and_exchange_val_24_acq(mem, newval, oldval) \
+ ({ \
+ __typeof (*mem) __acev_wret; \
+ if (sizeof (*mem) != 4) \
+ abort (); \
+ if (__atomic_is_v9) \
+ __acev_wret \
+ = __v9_compare_and_exchange_val_32_acq (mem, newval, oldval);\
+ else \
+ __acev_wret \
+ = __v7_compare_and_exchange_val_24_acq (mem, newval, oldval);\
+ __acev_wret; })
+
+# define atomic_exchange_24_rel(mem, newval) \
+ ({ \
+ __typeof (*mem) __acev_w24ret; \
+ if (sizeof (*mem) != 4) \
+ abort (); \
+ if (__atomic_is_v9) \
+ __acev_w24ret = atomic_exchange_rel (mem, newval); \
+ else \
+ __acev_w24ret = __v7_exchange_24_rel (mem, newval); \
+ __acev_w24ret; })
+
+#endif
+
#endif /* bits/atomic.h */
/* Machine-dependent ELF dynamic relocation inline functions. SPARC version.
- Copyright (C) 1996-2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 1996-2003, 2004, 2005, 2006 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
#define OPCODE_SAVE_SP 0x9de3bfa8 /* save %sp, -(16+6)*4, %sp */
#define OPCODE_BA 0x30800000 /* b,a ?; add PC-rel word address */
-/* Use a different preload file when running in 32-bit emulation mode
- on a 64-bit host. */
-#define LD_SO_PRELOAD ((GLRO(dl_hwcap) & HWCAP_SPARC_V9) \
- ? "/etc/ld.so.preload32" \
- : "/etc/ld.so.preload")
-
-
/* Return nonzero iff ELF header is compatible with the running host. */
static inline int
elf_machine_matches_host (const Elf32_Ehdr *ehdr)
/* Atomic operations. sparcv9 version.
- Copyright (C) 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
abort (); \
__oldval; })
+#define atomic_compare_and_exchange_val_24_acq(mem, newval, oldval) \
+ atomic_compare_and_exchange_val_acq (mem, newval, oldval)
+
+#define atomic_exchange_24_rel(mem, newval) \
+ atomic_exchange_rel (mem, newval)
+
#define atomic_full_barrier() \
__asm __volatile ("membar #LoadLoad | #LoadStore" \
" | #StoreLoad | #StoreStore" : : : "memory")
/* Atomic operations. sparc64 version.
- Copyright (C) 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
} \
__oldval; })
+#define atomic_compare_and_exchange_val_24_acq(mem, newval, oldval) \
+ atomic_compare_and_exchange_val_acq (mem, newval, oldval)
+
+#define atomic_exchange_24_rel(mem, newval) \
+ atomic_exchange_rel (mem, newval)
+
#define atomic_full_barrier() \
__asm __volatile ("membar #LoadLoad | #LoadStore" \
" | #StoreLoad | #StoreStore" : : : "memory")
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
+#include <string.h>
#include <sysdep.h>
#include <sys/syscall.h>
projects / platform / upstream / glibc.git / commitdiff