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/*
* Copyright (c) 2016 Wind River Systems, Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief ARM Cortex-M k_thread_abort() routine
*
* The ARM Cortex-M architecture provides its own k_thread_abort() to deal
* with different CPU modes (handler vs thread) when a thread aborts. When its
* entry point returns or when it aborts itself, the CPU is in thread mode and
* must call _Swap() (which triggers a service call), but when in handler
* mode, the CPU must exit handler mode to cause the context switch, and thus
* must queue the PendSV exception.
*/
#include <kernel.h>
#include <kernel_structs.h>
#include <toolchain.h>
#include <sections.h>
#include <ksched.h>
#include <wait_q.h>
extern void _k_thread_single_abort(struct tcs *thread);
void k_thread_abort(k_tid_t thread)
{
unsigned int key;
key = irq_lock();
_k_thread_single_abort(thread);
_thread_monitor_exit(thread);
if (_current == thread) {
if (_ScbIsInThreadMode()) {
_Swap(key);
CODE_UNREACHABLE;
} else {
SCB->ICSR |= SCB_ICSR_PENDSVSET_Msk;
}
}
/* The abort handler might have altered the ready queue. */
_reschedule_threads(key);
}
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