(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

2 files changed, 130 insertions, 0 deletions

diff --git a/linuxthreads/sysdeps/cris/pspinlock.c b/linuxthreads/sysdeps/cris/pspinlock.c
new file mode 100644
index 0000000000..402e838c00
--- /dev/null
+++ b/linuxthreads/sysdeps/cris/pspinlock.c
@@ -0,0 +1,72 @@
+/* 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,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#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/linuxthreads/sysdeps/cris/pt-machine.h b/linuxthreads/sysdeps/cris/pt-machine.h
new file mode 100644
index 0000000000..431da7101d
--- /dev/null
+++ b/linuxthreads/sysdeps/cris/pt-machine.h
@@ -0,0 +1,58 @@
+/* Machine-dependent pthreads configuration and inline functions.
+   CRIS version.
+   Copyright (C) 2001, 2002, 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; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _PT_MACHINE_H
+#define _PT_MACHINE_H   1
+
+#ifndef PT_EI
+# define PT_EI extern inline __attribute__ ((always_inline))
+#endif
+
+extern long int testandset (int *spinlock);
+extern int __compare_and_swap (long int *p, long int oldval, long int newval);
+
+PT_EI long int
+testandset (int *spinlock)
+{
+  register unsigned long int ret;
+
+  /* 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.  */
+  __asm__ __volatile__("clearf\n"
+		       "0:\n\t"
+		       "movu.b [%2],%0\n\t"
+		       "ax\n\t"
+		       "move.b %3,[%2]\n\t"
+		       "bwf 0b\n\t"
+		       "clearf"
+		       : "=&r" (ret), "=m" (*spinlock)
+		       : "r" (spinlock), "r" ((int) 1)
+		       : "memory");
+  return ret;
+}
+
+
+/* Get some notion of the current stack.  Need not be exactly the top
+   of the stack, just something somewhere in the current frame.
+   I don't trust register variables, so let's do this the safe way.  */
+#define CURRENT_STACK_FRAME \
+ ({ char *sp; __asm__ ("move.d $sp,%0" : "=rm" (sp)); sp; })
+
+#endif /* pt-machine.h */