zephyr/arch/arm/core/task_abort.c
Yonattan Louise 0db750f266 Rename cmdpacket to cmd_packet
Updating local variable's name to follow a consistent naming convention.

Change accomplished with the following script:

   #!/bin/bash
   echo "Searching for ${1} to replace with ${2}"
   find ./ \( -name "*.[chs]" -o -name "sysgen.py" -o -name "*.kconf" -o -name "*.arch" \) \
            ! -path "./host/src/genIdt/*" \
            ! -path "*/outdir/*" | xargs sed -i 's/\b'${1}'\b/'${2}'/g';

Change-Id: Ie65865c480be5b6a678ef4716dade3ee745bd88f
Signed-off-by: Yonattan Louise <yonattan.a.louise.mendoza@intel.com>
2016-02-05 20:13:53 -05:00

88 lines
3.0 KiB
C

/* task_abort.c - ARM Cortex-M _TaskAbort() routine */
/*
* Copyright (c) 2014 Wind River Systems, Inc.
*
* 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 of Wind River Systems 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 HOLDER 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.
*/
/*
DESCRIPTION
The ARM Cortex-M architecture provides its own _TaskAbort() to deal with
different CPU modes (handler vs thread) when a task aborts. When its entry
point returns or when it aborts itself, the CPU is in thread mode and must
call the equivalent of task_abort(<self>), but when in handler mode, the
CPU must queue a packet to K_swapper(), then exit handler mode to queue the
PendSV exception and cause the immediate context switch to K_swapper.
*/
#ifdef CONFIG_MICROKERNEL
#include <toolchain.h>
#include <sections.h>
#include <minik.h>
#include <nanok.h>
#include <microkernel.h>
#include <nanokernel.h>
#include <misc/__assert.h>
static struct k_args cmd_packet;
/*******************************************************************************
*
* _TaskAbort - abort the current task
*
* Possible reasons for a task aborting:
*
* - the task explicitly aborts itself by calling this routine
* - the task implicitly aborts by returning from its entry point
* - the task encounters a fatal exception
*
* RETURNS: N/A
*
* \NOMANUAL
*/
void _TaskAbort(void)
{
const int taskAbortCode = 1;
if (_ScbIsInThreadMode()) {
_task_ioctl(_k_current_task->Ident, taskAbortCode);
} else {
cmd_packet.Comm = TSKOP;
cmd_packet.Args.g1.task = _k_current_task->Ident;
cmd_packet.Args.g1.opt = taskAbortCode;
cmd_packet.alloc = false;
_k_current_task->Args = &cmd_packet;
nano_isr_stack_push(&_k_command_stack, (uint32_t) &cmd_packet);
_ScbPendsvSet();
}
}
#endif /* CONFIG_MICROKERNEL */