diff options
Diffstat (limited to 'misc/Obsoleted/arch/8051/src/up_exit.c')
-rw-r--r-- | misc/Obsoleted/arch/8051/src/up_exit.c | 106 |
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); +} + |