Obsolete support for the 8051 family. Trying to maintain compatibility with this family is too much effort and there has never really been a successful NuttX impplementation on these parts

1 files changed, 106 insertions, 0 deletions

diff --git a/misc/Obsoleted/arch/8051/src/up_exit.c b/misc/Obsoleted/arch/8051/src/up_exit.c
new file mode 100644
index 000000000..29fe790fb
--- /dev/null
+++ b/misc/Obsoleted/arch/8051/src/up_exit.c
@@ -0,0 +1,106 @@
+/****************************************************************************************
+ * up_exit.c
+ *
+ *   Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************************/
+
+/****************************************************************************************
+ * Included Files
+ ****************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sched.h>
+#include <debug.h>
+
+#include <8052.h>
+#include <nuttx/arch.h>
+
+#include "task/task.h"
+#include "sched/sched.h"
+#include "up_internal.h"
+
+/****************************************************************************************
+ * Private Definitions
+ ****************************************************************************************/
+
+/****************************************************************************************
+ * Private Data
+ ****************************************************************************************/
+
+/****************************************************************************************
+ * Private Functions
+ ****************************************************************************************/
+
+/****************************************************************************************
+ * Public Functions
+ ****************************************************************************************/
+
+/****************************************************************************************
+ * Name: _exit
+ *
+ * Description:
+ *   This function causes the currently executing task to cease
+ *   to exist.  This is a special case of task_delete() where the task to
+ *   be deleted is the currently executing task.  It is more complex because
+ *   a context switch must be perform to the next ready to run task.
+ *
+ ****************************************************************************************/
+
+void _exit(int status)
+{
+  FAR struct tcb_s* tcb;
+
+  dbg("TCB=%p exiting\n", tcb);
+
+  /* Disable interrupts.  Interrupts will remain disabled until
+   * the new task is resumed below when the save IE is restored.
+   */
+
+  EA = 0;
+
+  /* Destroy the task at the head of the ready to run list. */
+
+  (void)task_exit();
+
+  /* Now, perform the context switch to the new ready-to-run task at the
+   * head of the list.
+   */
+
+  tcb = (FAR struct tcb_s*)g_readytorun.head;
+  dbg("New Active Task TCB=%p\n", tcb);
+
+  /* Then switch contexts */
+
+  up_restorecontext(&tcb->xcp);
+}
+