From a1435e018bfc9919cb76b1356509ecc883767fb4 Mon Sep 17 00:00:00 2001 From: gdisirio Date: Sat, 10 Aug 2013 14:51:16 +0000 Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6123 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- os/kernel/src/chsys.c | 298 -------------------------------------------------- 1 file changed, 298 deletions(-) delete mode 100644 os/kernel/src/chsys.c (limited to 'os/kernel/src/chsys.c') diff --git a/os/kernel/src/chsys.c b/os/kernel/src/chsys.c deleted file mode 100644 index 9212cbf5f..000000000 --- a/os/kernel/src/chsys.c +++ /dev/null @@ -1,298 +0,0 @@ -/* - ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010, - 2011,2012,2013 Giovanni Di Sirio. - - This file is part of ChibiOS/RT. - - ChibiOS/RT is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - ChibiOS/RT is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see . -*/ - -/** - * @file chsys.c - * @brief System related code. - * - * @addtogroup system - * @details System related APIs and services: - * - Initialization. - * - Locks. - * - Interrupt Handling. - * - Power Management. - * - Abnormal Termination. - * - Realtime counter. - * . - * @{ - */ - -#include "ch.h" - -/*===========================================================================*/ -/* Module exported variables. */ -/*===========================================================================*/ - -/*===========================================================================*/ -/* Module local types. */ -/*===========================================================================*/ - -/*===========================================================================*/ -/* Module local variables. */ -/*===========================================================================*/ - -/** - * @brief System data structures. - */ -ch_system_t ch; - -#if !CH_CFG_NO_IDLE_THREAD || defined(__DOXYGEN__) -/** - * @brief Idle thread working area. - */ -static WORKING_AREA(_idle_thread_wa, CH_PORT_IDLE_THREAD_STACK_SIZE); -#endif /* CH_CFG_NO_IDLE_THREAD */ - -/*===========================================================================*/ -/* Module local functions. */ -/*===========================================================================*/ - -#if !CH_CFG_NO_IDLE_THREAD || defined(__DOXYGEN__) -/** - * @brief This function implements the idle thread infinite loop. - * @details The function puts the processor in the lowest power mode capable - * to serve interrupts.
- * The priority is internally set to the minimum system value so - * that this thread is executed only if there are no other ready - * threads in the system. - * - * @param[in] p the thread parameter, unused in this scenario - */ -static void _idle_thread(void *p) { - - (void)p; - chRegSetThreadName("idle"); - while (true) { - port_wait_for_interrupt(); - CH_CFG_IDLE_LOOP_HOOK(); - } -} -#endif /* CH_CFG_NO_IDLE_THREAD */ - -/*===========================================================================*/ -/* Module exported functions. */ -/*===========================================================================*/ - -/** - * @brief ChibiOS/RT initialization. - * @details After executing this function the current instructions stream - * becomes the main thread. - * @pre Interrupts must be still disabled when @p chSysInit() is invoked - * and are internally enabled. - * @post The main thread is created with priority @p NORMALPRIO. - * @note This function has special, architecture-dependent, requirements, - * see the notes into the various port reference manuals. - * - * @special - */ -void chSysInit(void) { - static thread_t mainthread; -#if CH_DBG_ENABLE_STACK_CHECK - extern stkalign_t __main_thread_stack_base__; -#endif - - port_init(); - _scheduler_init(); - _vt_init(); -#if CH_CFG_USE_TM - _tm_init(); -#endif -#if CH_CFG_USE_MEMCORE - _core_init(); -#endif -#if CH_CFG_USE_HEAP - _heap_init(); -#endif -#if CH_DBG_STATISTICS - _stats_init(); -#endif -#if CH_DBG_ENABLE_TRACE - _trace_init(); -#endif - -#if !CH_CFG_NO_IDLE_THREAD - /* Now this instructions flow becomes the main thread.*/ - setcurrp(_thread_init(&mainthread, NORMALPRIO)); -#else - /* Now this instructions flow becomes the main thread.*/ - setcurrp(_thread_init(&mainthread, IDLEPRIO)); -#endif - - currp->p_state = CH_STATE_CURRENT; -#if CH_DBG_ENABLE_STACK_CHECK - /* This is a special case because the main thread thread_t structure is not - adjacent to its stack area.*/ - currp->p_stklimit = &__main_thread_stack_base__; -#endif - chSysEnable(); - - /* Note, &ch_debug points to the string "main" if the registry is - active, else the parameter is ignored.*/ - chRegSetThreadName((const char *)&ch_debug); - -#if !CH_CFG_NO_IDLE_THREAD - /* This thread has the lowest priority in the system, its role is just to - serve interrupts in its context while keeping the lowest energy saving - mode compatible with the system status.*/ - chThdCreateStatic(_idle_thread_wa, sizeof(_idle_thread_wa), IDLEPRIO, - (tfunc_t)_idle_thread, NULL); -#endif -} - -/** - * @brief Halts the system. - * @details This function is invoked by the operating system when an - * unrecoverable error is detected, for example because a programming - * error in the application code that triggers an assertion while - * in debug mode. - * @note Can be invoked from any system state. - * - * @special - */ -void chSysHalt(void) { - - port_disable(); - -#if defined(CH_CFG_SYSTEM_HALT_HOOK) || defined(__DOXYGEN__) - CH_CFG_SYSTEM_HALT_HOOK(); -#endif - - /* Harmless infinite loop.*/ - while (true) - ; -} - -/** - * @brief Handles time ticks for round robin preemption and timer increments. - * @details Decrements the remaining time quantum of the running thread - * and preempts it when the quantum is used up. Increments system - * time and manages the timers. - * @note The frequency of the timer determines the system tick granularity - * and, together with the @p CH_CFG_TIME_QUANTUM macro, the round robin - * interval. - * - * @iclass - */ -void chSysTimerHandlerI(void) { - - chDbgCheckClassI(); - -#if CH_CFG_TIME_QUANTUM > 0 - /* Running thread has not used up quantum yet? */ - if (currp->p_preempt > 0) - /* Decrement remaining quantum.*/ - currp->p_preempt--; -#endif -#if CH_DBG_THREADS_PROFILING - currp->p_time++; -#endif - chVTDoTickI(); -#if defined(CH_CFG_SYSTEM_TICK_HOOK) - CH_CFG_SYSTEM_TICK_HOOK(); -#endif -} - - -/** - * @brief Returns the execution context and enters the kernel lock mode. - * @details This functions enters into a critical zone and can be called - * from any context. Because its flexibility it is less efficient - * than @p chSysLock() which is preferable when the calling context - * is known. - * - * @return The previous system status, the encoding of this - * status word is architecture-dependent and opaque. - * - * @xclass - */ -syssts_t chSysGetAndLockX(void) { - - syssts_t sts = port_get_irq_status(); - if (port_irq_enabled(sts)) { - if (port_is_isr_context()) - chSysLockFromISR(); - else - chSysLock(); - } - return sts; -} - -/** - * @brief Restores the specified execution status. - * - * @param[in] sts the system status to be restored. - * - * @xclass - */ -void chSysRestoreLockX(syssts_t sts) { - - if (port_irq_enabled(sts)) { - if (port_is_isr_context()) - chSysUnlockFromISR(); - else - chSysUnlock(); - } -} - -#if CH_PORT_SUPPORTS_RT || defined(__DOXYGEN__) -/** - * @brief Realtime window test. - * @details This function verifies if the current realtime counter value - * lies within the specified range or not. The test takes care - * of the realtime counter wrapping to zero on overflow. - * @note When start==end then the function returns always true because the - * whole time range is specified. - * @note This function is only available if the port layer supports the - * option @p CH_PORT_SUPPORTS_RT. - * - * @param[in] cnt the counter value to be tested - * @param[in] start the start of the time window (inclusive) - * @param[in] end the end of the time window (non inclusive) - * @retval true current time within the specified time window. - * @retval false current time not within the specified time window. - * - * @xclass - */ -bool chSysIsCounterWithinX(rtcnt_t cnt, rtcnt_t start, rtcnt_t end) { - - return end > start ? (cnt >= start) && (cnt < end) : - (cnt >= start) || (cnt < end); -} - -/** - * @brief Polled delay. - * @note The real delay is always few cycles in excess of the specified - * value. - * @note This function is only available if the port layer supports the - * option @p CH_PORT_SUPPORTS_RT. - * - * @param[in] cycles number of cycles - * - * @xclass - */ -void chSysPolledDelayX(rtcnt_t cycles) { - rtcnt_t start = chSysGetRealtimeCounterX(); - rtcnt_t end = start + cycles; - while (chSysIsCounterWithinX(chSysGetRealtimeCounterX(), start, end)) - ; -} -#endif /* CH_PORT_SUPPORTS_RT */ - -/** @} */ -- cgit v1.2.3