369 lines
8.8 KiB
C
369 lines
8.8 KiB
C
/*----------------------------------------------------------------------------
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* Tencent is pleased to support the open source community by making TencentOS
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* available.
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*
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* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
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* If you have downloaded a copy of the TencentOS binary from Tencent, please
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* note that the TencentOS binary is licensed under the BSD 3-Clause License.
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*
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* If you have downloaded a copy of the TencentOS source code from Tencent,
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* please note that TencentOS source code is licensed under the BSD 3-Clause
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* License, except for the third-party components listed below which are
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* subject to different license terms. Your integration of TencentOS into your
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* own projects may require compliance with the BSD 3-Clause License, as well
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* as the other licenses applicable to the third-party components included
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* within TencentOS.
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*---------------------------------------------------------------------------*/
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/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2016-2018 Armink (armink.ztl@gmail.com)
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* 'Software'), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "tos_k.h"
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#include <pthread.h>
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#include <sched.h>
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#include <signal.h>
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#include <errno.h>
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#include <sys/time.h>
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#include <time.h>
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#include <sys/times.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <limits.h>
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extern k_task_t *k_curr_task;
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extern k_task_t *k_next_task;
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__PORT__ void _handle_tick_signal();
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__PORT__ void _handle_context_switch();
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__PORT__ void _suspend_thread(pthread_t thread_id);
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__PORT__ void _resume_thread(pthread_t thread_id);
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__PORT__ void _wait_resume();
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__PORT__ void _handle_suspend_thread();
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__PORT__ void _handle_resume_thread();
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__PORT__ void *_thread_entry(void *arg);
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__PORT__ void _suspend_task(k_task_t *task);
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__PORT__ void _resume_task(k_task_t *task);
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__PORT__ void _install_signal(int sig,void (*func)(int));
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__PORT__ void _filter_signal(sigset_t *sigset);
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__PORT__ uint64_t _get_time_ms(void);
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typedef struct {
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sigset_t signal_mask;
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uint32_t count;
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}interrupt_manager;
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interrupt_manager _int_manager={
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.count = 0
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};
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static uint64_t tick_ms = 0;
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static pthread_t main_thread_id;
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static pthread_mutex_t cpsr_mutex;
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#define CHECK_IS_MAIN_THREAD(main_thread_id) \
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if(main_thread_id != pthread_self()) return
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__PORT__ void port_int_disable(void)
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{
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sigset_t signal_mask,*manager_mask=NULL;
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if(_int_manager.count == 0){
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pthread_mutex_lock(&cpsr_mutex);
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manager_mask = &(_int_manager.signal_mask);
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sigfillset(&signal_mask);
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_filter_signal(&signal_mask);
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pthread_sigmask(SIG_BLOCK,&signal_mask,manager_mask);
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}
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_int_manager.count ++;
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}
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__PORT__ void port_int_enable(void)
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{
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if(_int_manager.count == 0) return;
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_int_manager.count--;
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if(_int_manager.count == 0){
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sigaddset(&(_int_manager.signal_mask),SIG_RESUME); //ensure SIG_RESUME is blocked
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_filter_signal(&(_int_manager.signal_mask));
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pthread_mutex_unlock(&cpsr_mutex);
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pthread_sigmask(SIG_SETMASK,&(_int_manager.signal_mask),NULL);
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}
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}
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__PORT__ cpu_cpsr_t port_cpsr_save(void)
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{
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port_int_disable();
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return (cpu_cpsr_t)_int_manager.count;
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}
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__PORT__ void port_cpsr_restore(cpu_cpsr_t cpsr)
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{
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port_int_enable();
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}
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__PORT__ pthread_t port_create_thread(void *arg)
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{
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pthread_t thread_id;
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pthread_create(&thread_id,NULL,_thread_entry,arg);
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return thread_id;
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}
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__PORT__ void port_sched_start(void)
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{
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k_curr_task = k_next_task;
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_resume_task(k_curr_task);
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while(1){
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_wait_resume();
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}
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}
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__PORT__ void port_context_switch(void)
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{
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raise(SIG_CONTEXT_SWITCH);
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}
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__PORT__ void port_irq_context_switch(void)
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{
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raise(SIG_CONTEXT_SWITCH);
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}
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__PORT__ void port_cpu_reset(void)
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{
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printf("func %s\n",__FUNCTION__);
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exit(0);
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}
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__PORT__ void port_systick_config(uint32_t cycle_per_tick)
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{
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struct itimerval itimer, oitimer;
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uint32_t timeer_usec = cycle_per_tick/(TOS_CFG_CPU_CLOCK/1000000u);
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_install_signal(SIG_TICK,_handle_tick_signal);
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/* Initialise the structure with the current timer information. */
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if ( 0 == getitimer( TIMER_TYPE, &itimer ) )
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{
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/* Set the interval between timer events. */
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itimer.it_interval.tv_sec = 0;
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itimer.it_interval.tv_usec = timeer_usec;
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/* Set the current count-down. */
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itimer.it_value.tv_sec = 0;
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itimer.it_value.tv_usec = timeer_usec;
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/* Set-up the timer interrupt. */
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if ( 0 != setitimer( TIMER_TYPE, &itimer, &oitimer ) )
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{
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printf( "set timer problem.\n" );
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}
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}
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else
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{
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printf( "get timer problem.\n" );
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}
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}
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__PORT__ void port_init(void)
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{
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main_thread_id = pthread_self();
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pthread_mutex_init(&cpsr_mutex,NULL);
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_install_signal(SIG_SUSPEND, _handle_suspend_thread);
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_install_signal(SIG_RESUME, _handle_resume_thread);
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_install_signal(SIG_CONTEXT_SWITCH, _handle_context_switch);
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}
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__PORT__ void port_delay_ms(uint32_t ms)
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{
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uint64_t start_time = _get_time_ms();
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do{
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usleep(100);
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}while((_get_time_ms() - start_time) < ms);
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}
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__PORT__ void _filter_signal(sigset_t *sigset)
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{
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sigdelset(sigset,SIGINT);
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sigdelset(sigset,SIGKILL); //ensure program cloud be kill
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}
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__PORT__ uint64_t _get_time_ms(void)
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{
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return (tick_ms);
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}
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__PORT__ void _install_signal(int sig,void (*func)(int))
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{
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struct sigaction sig_install;
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sig_install.sa_flags = 0;
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sig_install.sa_handler = func;
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sigfillset( &sig_install.sa_mask );
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if ( 0 != sigaction( sig, &sig_install, NULL ) )
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{
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printf( "problem installing %d\n",sig );
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}
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}
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__PORT__ void _handle_tick_signal()
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{
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CHECK_IS_MAIN_THREAD(main_thread_id);
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tick_ms ++;
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if(tos_knl_is_running()) {
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tos_knl_irq_enter();
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tos_tick_handler();
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tos_knl_irq_leave();
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}
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}
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__PORT__ void _suspend_thread(pthread_t thread_id)
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{
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pthread_kill(thread_id,SIG_SUSPEND);
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}
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__PORT__ void _resume_thread(pthread_t thread_id)
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{
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pthread_kill(thread_id,SIG_RESUME);
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}
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__PORT__ void _suspend_task(k_task_t *task)
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{
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cpu_context_t *context = (cpu_context_t *)(task->sp);
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pthread_t thread_id = context->thread_id;
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_suspend_thread(thread_id);
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}
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__PORT__ void _resume_task(k_task_t *task)
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{
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cpu_context_t *context = (cpu_context_t *)(task->sp);
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pthread_t thread_id = context->thread_id;
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_resume_thread(thread_id);
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}
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__PORT__ void _wait_resume()
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{
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sigset_t signals;
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int sig;
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sigemptyset( &signals );
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sigaddset( &signals, SIG_RESUME);
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pthread_sigmask(SIG_BLOCK, &signals,NULL);
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sigwait(&signals,&sig);
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}
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__PORT__ void _handle_suspend_thread()
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{
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_wait_resume();
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}
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__PORT__ void _handle_resume_thread()
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{
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printf("some thread not block SIG_RESUME\n");
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}
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__PORT__ void *_thread_entry(void *arg)
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{
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cpu_context_t *params = (cpu_context_t *)arg;
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_wait_resume();
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params->entry(params->arg);
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params->exit(params->arg);
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}
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__PORT__ void _handle_context_switch()
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{
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_suspend_task(k_curr_task);
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k_curr_task = k_next_task;
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_resume_task(k_curr_task);
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}
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#if TOS_CFG_TICKLESS_EN > 0u
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__PORT__ k_time_t port_systick_max_delay_millisecond(void)
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{
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}
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__PORT__ void port_systick_resume(void)
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{
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}
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__PORT__ void port_systick_suspend(void)
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{
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}
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__PORT__ void port_systick_reload(uint32_t cycle_per_tick)
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{
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}
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__PORT__ void port_systick_pending_reset(void)
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{
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}
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#endif
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#if TOS_CFG_PWR_MGR_EN > 0u
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__PORT__ void port_sleep_mode_enter(void)
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{
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}
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__PORT__ void port_stop_mode_enter(void)
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{
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}
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__PORT__ void port_standby_mode_enter(void)
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{
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}
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#endif
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#if TOS_CFG_FAULT_BACKTRACE_EN > 0u
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__STATIC__ void port_fault_do_diagnosis(port_fault_regs_t *regs)
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{
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k_fault_log_writer("\n\n====================== Fault Diagnosis =====================\n");
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}
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__PORT__ void port_fault_diagnosis(void)
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{
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port_fault_regs_t regs;
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port_fault_do_diagnosis(®s);
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}
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// implementation jump to fault_backtrace
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#endif /* TOS_CFG_FAULT_BACKTRACE_EN */
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