From e1e46622ac0fce73d802fa4a8a2e83cc25cd9e7a Mon Sep 17 00:00:00 2001
From: Waldemar Brodkorb <wbx@openadk.org>
Date: Sat, 14 Feb 2015 23:04:02 -0600
Subject: Revert "resolve merge"

This reverts commit 6b6ede3d15f04fe825cfa9f697507457e3640344.
---
 libpthread/linuxthreads/sysdeps/cris/pspinlock.c  | 71 +++++++++++++++++++++++
 libpthread/linuxthreads/sysdeps/cris/pt-machine.h | 21 ++-----
 2 files changed, 75 insertions(+), 17 deletions(-)
 create mode 100644 libpthread/linuxthreads/sysdeps/cris/pspinlock.c

(limited to 'libpthread/linuxthreads/sysdeps/cris')

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;
 }
 
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