summary refs log tree commit diff
path: root/linuxthreads/sysdeps/sh/pspinlock.c
diff options
context:
space:
mode:
Diffstat (limited to 'linuxthreads/sysdeps/sh/pspinlock.c')
-rw-r--r--linuxthreads/sysdeps/sh/pspinlock.c80
1 files changed, 0 insertions, 80 deletions
diff --git a/linuxthreads/sysdeps/sh/pspinlock.c b/linuxthreads/sysdeps/sh/pspinlock.c
deleted file mode 100644
index 2dec849d3c..0000000000
--- a/linuxthreads/sysdeps/sh/pspinlock.c
+++ /dev/null
@@ -1,80 +0,0 @@
-/* POSIX spinlock implementation.  SH 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"
-
-int
-__pthread_spin_lock (pthread_spinlock_t *lock)
-{
-  unsigned int val;
-
-  do
-    asm volatile ("tas.b @%1; movt %0"
-		  : "=r" (val)
-		  : "r" (lock)
-		  : "memory");
-  while (val == 0);
-
-  return 0;
-}
-weak_alias (__pthread_spin_lock, pthread_spin_lock)
-
-
-int
-__pthread_spin_trylock (pthread_spinlock_t *lock)
-{
-  unsigned int val;
-
-  asm volatile ("tas.b @%1; movt %0"
-		: "=r" (val)
-		: "r" (lock)
-		: "memory");
-  return val ? 0 : EBUSY;
-}
-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)