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-rw-r--r--libpthread/linuxthreads/sysdeps/cris/pspinlock.c71
-rw-r--r--libpthread/linuxthreads/sysdeps/cris/pt-machine.h21
2 files changed, 75 insertions, 17 deletions
diff --git a/libpthread/linuxthreads/sysdeps/cris/pspinlock.c b/libpthread/linuxthreads/sysdeps/cris/pspinlock.c
new file mode 100644
index 000000000..7e3e62959
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/cris/pspinlock.c
@@ -0,0 +1,71 @@
+/* POSIX spinlock implementation. CRIS version.
+ Copyright (C) 2000, 2001 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; see the file COPYING.LIB. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <pthread.h>
+#include "internals.h"
+
+/* FIXME: These are just dummies. I don't know why or if they're needed;
+ configury should default to these definitions. We just follow the
+ crowd here. */
+
+int
+__pthread_spin_lock (pthread_spinlock_t *lock)
+{
+ while (testandset (lock) != 0)
+ ;
+
+ return 0;
+}
+weak_alias (__pthread_spin_lock, pthread_spin_lock)
+
+
+int
+__pthread_spin_trylock (pthread_spinlock_t *lock)
+{
+ return testandset (lock) != 0 ? EBUSY : 0;
+}
+weak_alias (__pthread_spin_trylock, pthread_spin_trylock)
+
+
+int
+__pthread_spin_unlock (pthread_spinlock_t *lock)
+{
+ return *lock = 0;
+}
+weak_alias (__pthread_spin_unlock, pthread_spin_unlock)
+
+
+int
+__pthread_spin_init (pthread_spinlock_t *lock, int pshared)
+{
+ /* We can ignore the `pshared' parameter. Since we are busy-waiting
+ all processes which can access the memory location `lock' points
+ to can use the spinlock. */
+ return *lock = 0;
+}
+weak_alias (__pthread_spin_init, pthread_spin_init)
+
+
+int
+__pthread_spin_destroy (pthread_spinlock_t *lock)
+{
+ /* Nothing to do. */
+ return 0;
+}
+weak_alias (__pthread_spin_destroy, pthread_spin_destroy)
diff --git a/libpthread/linuxthreads/sysdeps/cris/pt-machine.h b/libpthread/linuxthreads/sysdeps/cris/pt-machine.h
index a89579ee0..9b2acb761 100644
--- a/libpthread/linuxthreads/sysdeps/cris/pt-machine.h
+++ b/libpthread/linuxthreads/sysdeps/cris/pt-machine.h
@@ -14,8 +14,9 @@
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,
- see <http://www.gnu.org/licenses/>. */
+ License along with the GNU C Library; see the file COPYING.LIB. If
+ not, see <http://www.gnu.org/licenses/>. */
+
#ifndef _PT_MACHINE_H
#define _PT_MACHINE_H 1
@@ -32,19 +33,6 @@ testandset (int *spinlock)
/* Note the use of a dummy output of *spinlock to expose the write. The
memory barrier is to stop *other* writes being moved past this code. */
-
-#ifdef __arch_v32
- __asm__ __volatile__("clearf p\n"
- "0:\n\t"
- "movu.b [%2],%0\n\t"
- "ax\n\t"
- "move.b %3,[%2]\n\t"
- "bcs 0b\n\t"
- "clearf p"
- : "=&r" (ret), "=m" (*spinlock)
- : "r" (spinlock), "r" ((int) 1), "m" (*spinlock)
- : "memory");
-#else /* not __arch_v32 */
__asm__ __volatile__("clearf\n"
"0:\n\t"
"movu.b [%2],%0\n\t"
@@ -53,9 +41,8 @@ testandset (int *spinlock)
"bwf 0b\n\t"
"clearf"
: "=&r" (ret), "=m" (*spinlock)
- : "r" (spinlock), "r" ((int) 1), "m" (*spinlock)
+ : "r" (spinlock), "r" ((int) 1)
: "memory");
-#endif /* __arch_v32 */
return ret;
}