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authorUlrich Drepper <drepper@redhat.com>2000-04-18 07:56:20 +0000
committerUlrich Drepper <drepper@redhat.com>2000-04-18 07:56:20 +0000
commitcd43f797c473dbb5f6f4031e4abb784719e64c93 (patch)
tree3a32b3a0aefa3ee4f6525d42052b567d649e48aa /linuxthreads
parentdbacafe52e30710b5ec8707f60c531e6aeb857ed (diff)
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Update.
2000-04-18 Ulrich Drepper <drepper@redhat.com> * posix/Makefile (tests): Add tst-getaddrinfo. * posix/tst-getaddrinfo.c: New file. and setresuid from sysdep_routines.
Diffstat (limited to 'linuxthreads')
-rw-r--r--linuxthreads/ChangeLog10
-rw-r--r--linuxthreads/internals.h5
-rw-r--r--linuxthreads/spinlock.c4
-rw-r--r--linuxthreads/sysdeps/sparc/sparc64/pt-machine.h8
4 files changed, 21 insertions, 6 deletions
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog
index fddbbce..2dc229e 100644
--- a/linuxthreads/ChangeLog
+++ b/linuxthreads/ChangeLog
@@ -1,3 +1,13 @@
+2000-04-18 Jakub Jelinek <jakub@redhat.com>
+
+ * sysdeps/sparc/sparc64/pt-machine.h (MEMORY_BARRIER): Use membar,
+ not stbar.
+ (READ_MEMORY_BARRIER): Define.
+ * spinlock.c (__pthread_spin_unlock): Use READ_MEMORY_BARRIER, not
+ MEMORY_BARRIER.
+ * internals.h (READ_MEMORY_BARRIER): Define if not defined in sysdep
+ headers.
+
2000-04-17 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/i386/getcpuclockid.c
diff --git a/linuxthreads/internals.h b/linuxthreads/internals.h
index c1f4081..079bf2c 100644
--- a/linuxthreads/internals.h
+++ b/linuxthreads/internals.h
@@ -359,11 +359,14 @@ static inline pthread_descr thread_self (void)
/* If MEMORY_BARRIER isn't defined in pt-machine.h, assume the architecture
doesn't need a memory barrier instruction (e.g. Intel x86). Some
- architectures distinguish between normal/read and write barriers. */
+ architectures distinguish between full, read and write barriers. */
#ifndef MEMORY_BARRIER
#define MEMORY_BARRIER()
#endif
+#ifndef READ_MEMORY_BARRIER
+#define READ_MEMORY_BARRIER() MEMORY_BARRIER()
+#endif
#ifndef WRITE_MEMORY_BARRIER
#define WRITE_MEMORY_BARRIER() MEMORY_BARRIER()
#endif
diff --git a/linuxthreads/spinlock.c b/linuxthreads/spinlock.c
index d13cea1..c482d91 100644
--- a/linuxthreads/spinlock.c
+++ b/linuxthreads/spinlock.c
@@ -122,12 +122,12 @@ again:
several iterations of the while loop. Some processors (e.g.
multiprocessor Alphas) could perform such reordering even though
the loads are dependent. */
- MEMORY_BARRIER();
+ READ_MEMORY_BARRIER();
thr = *ptr;
}
/* Prevent reordering of the load of lock->__status above and
thr->p_nextlock below */
- MEMORY_BARRIER();
+ READ_MEMORY_BARRIER();
/* Remove max prio thread from waiting list. */
if (maxptr == (pthread_descr *) &lock->__status) {
/* If max prio thread is at head, remove it with compare-and-swap
diff --git a/linuxthreads/sysdeps/sparc/sparc64/pt-machine.h b/linuxthreads/sysdeps/sparc/sparc64/pt-machine.h
index e22f4fe..e5695c0 100644
--- a/linuxthreads/sysdeps/sparc/sparc64/pt-machine.h
+++ b/linuxthreads/sysdeps/sparc/sparc64/pt-machine.h
@@ -38,9 +38,11 @@ testandset (int *spinlock)
/* Memory barrier; default is to do nothing */
-/* FIXME: is stbar OK, or should we use the more general membar instruction?
- If so, which mode to pass to membar? */
-#define MEMORY_BARRIER() __asm__ __volatile__("stbar" : : : "memory")
+#define MEMORY_BARRIER() \
+ __asm__ __volatile__("membar #LoadLoad | #LoadStore | #StoreLoad | #StoreStore" : : : "memory")
+/* Read barrier. */
+#define READ_MEMORY_BARRIER() \
+ __asm__ __volatile__("membar #LoadLoad | #LoadStore" : : : "memory")
/* Write barrier. */
#define WRITE_MEMORY_BARRIER() \
__asm__ __volatile__("membar #StoreLoad | #StoreStore" : : : "memory")